Page 1 2007 Honda TRX420TM/FM FOURTRAX RANCHER 420/4 4 OWNER’S MANUAL FOR OFF-ROAD USE ONLY This vehicle is designed and manufactured for off-road use only. USA only: It conforms to US EPA Noise Emission regulations, but does not conform to Federal Motor Vehicle Safety Standards or US EPA On Highway Exhaust Emission regulations, and operation on public streets, roads, or highways is illegal.
Page 2 Introduction Congratulations on choosing your Honda ATV. When you own a Honda, you’re part of a worldwide family of satisfied customers people who appreciate Honda’s reputation for building quality into every product. Your Honda was designed as a recreational ATV for off-road use by one rider only.
Page 3 Honda dealer knows your ATV best and is dedicated to your complete satisfaction. Please report any change of address or ownership to your Honda dealer so we will be able to contact you concerning important production information.
Page 4: A Few Words About Safety
A Few Words About Safety Your safety, and the safety of others, is very important. And operating this ATV safely is an important responsibility. To help you make informed decisions about safety, we have provided operating procedures and other information on labels and in this manual. This information alerts you to potential hazards that could hurt you or others.
Page 5 A Few Words About Safety These signal words mean: You WILL be KILLED or SERIOUSLY HURT if you don’t follow instructions. You CAN be KILLED or SERIOUSLY HURT if you don’t follow instructions. You CAN be HURT if you don’t follow instructions.
Page 6 Contents These pages give an overview of the contents of your owner’s manual. The first page of each section lists the topics covered in that section. ATV Safety ..................Important safety information you should know, plus a look at the safety-related labels on your ATV.
Page 7 Contents Servicing Your Honda ..............Why your ATV needs regular maintenance, what you need to know before servicing your Honda, an owner maintenance schedule, and instructions for specific maintenance and adjustment items. Tips ....................How to store and transport your ATV and how to be an environmentally-responsible rider.
Page 9: Atv Safety
ATV Safety This section presents some of the most important information and recommendations to help you ride your ATV safely. Please take a few moments to read these pages. This section also includes information about the location of safety labels on your ATV. Important Safety Information ..............
Page 10: Atv Safety
Important Safety Information Your ATV can provide many years of service and pleasure if you take responsibility for your own safety and understand the challenges you can meet while riding. There is much that you can do to protect yourself when you ride. You’ll find many helpful recommendations throughout this manual.
Page 11: Important Safety Information
Important Safety Information Ride Off-Road Only Your ATV is designed and manufactured for off-road use only. The tires are not made for pavement, and the ATV does not have turn signals and other features required for use on public roads. If you need to cross a paved or public road, get off and walk your ATV across.
Page 12 So don’t drink and ride, and don’t let your friends drink and ride either. Keep Your Honda in Safe Condition It’s important to keep your ATV properly maintained and in safe riding condition. Having a breakdown can be difficult, especially if you are stranded off-road far from your base.
Page 13: Safety Labels
Anyone who rides the vehicle should read and understand this information before riding. The labels should be considered permanent parts of the vehicle. If a label comes off or becomes hard to read, contact your Honda dealer for replacements. ATV Safety...
Page 14 Safety Labels USA only ATV Safety...
Page 15 Safety Labels ATV Safety...
Page 16 Safety Labels (TRX420FM only) ATV Safety...
Page 17: Table Of Contents
Instruments & Controls This section shows the location of all indicators and controls you would normally use before or while riding your ATV. The items listed on this page are described in this section. Instructions for other components are presented in other sections of this manual where they will be most useful.
Page 18: Operation Component Locations
Operation Component Locations parking brake lock lever rear brake lever/ parking brake lever reverse selector knob headlight switch front brake lever throttle lever headlight dimmer engine stop ignition switch switch switch start button 2WD/4WD select lever (TRX420FM only) Instruments & Controls...
Page 19: Operation Component Locations
Operation Component Locations rear cargo rack seat latch front cargo rack rear brake pedal fuel valve Instruments & Controls...
Page 20 Operation Component Locations flag pole bracket trailer hitch shift lever Instruments & Controls...
Page 21: Indicators & Gauge
Indicators & Gauge The indicators and gauge on your ATV keep you informed, alert you to possible problems, and make your riding safer and more enjoyable. Refer to the indicators frequently. Their functions are described on the following pages. (1) neutral indicator (2) high coolant temperature indicator (3) PGM-FI indicator (4) 4WD indicator (TRX420FM only)
Page 22 ON ( ) and remains on until you shift out of 4WD mode. If one of these indicators does not come on when it should, have your Honda dealer check for burned-out bulbs or other problems. Instruments & Controls...
Page 23 ON ( ). If the indicator comes on at any other time, reduce speed and take your vehicle to a Honda dealer as soon as possible. Lamp Check. 4WD indicator Lights when the drive mode is in the (TRX420FM only) 4WD mode.
Page 24: Fuel Gauge
Indicators & Gauge Fuel Gauge The fuel gauge ( ) shows the approximate fuel supply available. At F (Full), the fuel tank capacity including reserve is: 3.62 US gal (13.7 ) When the gauge needle ( ) enters the red band ( ), fuel will be low and you should refill the tank as soon as possible.
Page 25: Controls & Features
Controls & Features Fuel Valve RIGHT SIDE (1) fuel valve The manual fuel valve ( ) is located on the right side under the fuel tank. The three-way fuel valve is used to control the flow of fuel from the fuel tank to the fuel pump unit.
Page 26: Ignition Switch
Controls & Features Ignition Switch The ignition switch ( ) is used for starting and stopping the engine (page ). Insert the key and turn it to the right for the ON ( position. Key Position Function ON ( Electrical circuits on. OFF ( No electrical circuits function.
Page 27: 2Wd/4Wd Select Lever (Trx420Fm Only)
Controls & Features 2WD/4WD Select Lever ( only) TRX420FM Your ATV is equipped with a 2WD/4WD select lever ( ), which permits a choice between the ‘‘2WD’’ and ‘‘4WD’’ drive modes. Select a drive mode that’s suitable for your riding. Keep both hands on the handlebar while machine is in motion and come to a complete stop before using the 2WD/4WD select lever.
Page 28: Start Button
Controls & Features Start Button LEFT HANDLEBAR (1) start button START (2) engine stop switch The start button ( ) is used for starting the engine. Pushing the button in starts the engine. See Starting Procedure, page When the start button is pushed, the starter motor will crank the engine. The starter motor will not operate if the engine stop switch is in the OFF ) position when the start button is pushed.
Page 29: Headlight Switch
Controls & Features Headlight Switch LEFT HANDLEBAR (1) headlight switch (2) headlight dimmer switch The headlight switch ( ) is used to turn the headlight ON ( ) or OFF ). To operate, turn the switch to ON ( ) or OFF ( Headlight Dimmer Switch The headlight dimmer switch ( ) is used to change between the high and low beams of the headlight.
Page 30: Throttle Lever
Controls & Features Throttle Lever RIGHT HANDLEBAR (1) throttle lever (A) to open the throttle The throttle controls engine rpm (speed). To increase engine rpm, press the throttle lever ( ) with your thumb. To reduce engine rpm, release pressure on the throttle lever. The throttle will automatically return to the closed position (engine idle) when you remove your thumb.
Page 31: Reverse Selector Knob
Controls & Features Reverse Selector Knob The reverse selector knob ( ), located on the rear brake lever/parking brake lever ( ), is used to shift into reverse. To operate, with your ATV stopped and the transmission in neutral (make sure the neutral indicator lights), push in the knob, squeeze the rear brake lever/parking brake lever, then depress the shift lever.
Page 32: Front Brake Lever
Controls & Features Front Brake Lever The front brake lever is used to slow or stop your ATV. To operate, pull the lever. For information on braking techniques, see page Rear Brake Lever The rear brake lever is used to slow or stop your ATV. To operate, pull the lever.
Page 33: Parking Brake
Controls & Features Parking Brake LEFT HANDLEBAR (1) lock lever (A) to lock (2) rear brake lever/parking brake lever The lock lever ( ) on the rear brake lever/parking brake lever ( ) allows it to be used as a parking brake. To operate, first squeeze the rear brake lever/parking brake lever using your left hand and then lock it with the lock lever using your right hand.
Page 34: Flag Pole Bracket
Flag Pole Bracket RIGHT REAR (1) flag pole bracket Flag poles are optional equipment available from your Honda dealer. To mount a pole in the bracket ( ), follow the instructions that come with the flag pole kit. Flag poles are required in some riding areas. Check local regulations before riding.
Page 35: Trailer Hitch
Controls & Features Trailer Hitch REAR (1) trailer hitch (2) ball The trailer hitch ( ) is located on the rear axle housing. To use the hitch, you’ll need a proper size ball ( ) as specified by the trailer manufacturer.
Page 36 Instruments & Controls...
Page 37: Before Riding
Before Riding Before each ride, you need to make sure you and your Honda are both ready to ride. To help get you prepared, this section discusses how to evaluate your riding readiness, what items you should check on your ATV, and adjustments to make for your comfort, convenience, or safety.
Page 38: Are You Ready To Ride
Are You Ready to Ride? Before you ride your ATV for the first time, we urge you to: Read this owner’s manual and the labels on your ATV carefully. Make sure you understand all the safety messages. Know how to operate all the controls. Before each ride, be sure: You feel well and are in good physical and mental condition.
Page 39 Are You Ready to Ride? An open-face helmet offers some protection, but a full-face helmet offers more. Regardless of the style, look for a DOT (Department of Transportation) sticker in any helmet you buy (USA only). Always wear a face shield or goggles to protect your eyes and help your vision. Operating this ATV without wearing an approved motorcycle helmet, eye protection, and protective clothing could increase your...
Page 40: Rider Training
Beginning and inexperienced operators should complete the certified training course offered by Honda. They should then regularly practice the skills learned in the course and the operating techniques described in the owner’s manual.
Page 41: Age Recommendation
Are You Ready to Ride? Age Recommendation The minimum recommended age for this ATV model is 16. For safety, never let children under 16 years old operate this vehicle. A child using an ATV that is not recommended for their age could lose vehicle control while riding, resulting in severe injury or death.
Page 42: No Alcohol Or Drugs
Are You Ready to Ride? No Alcohol or Drugs Alcohol, drugs and ATVs don’t mix. Even a small amount of alcohol can impair your ability to operate an ATV safely. Likewise, drugs even if prescribed by a physician can be dangerous while operating an ATV.
Page 43: Is Your Atv Ready To Ride
If your ATV has overturned or been involved in a collision, do not ride the vehicle until it has been inspected by your Honda dealer. There may be damage or other problems you cannot see. Improperly maintaining this ATV or failing to...
Page 44 Is Your ATV Ready to Ride? Fuel Check the level and add fuel (page ) if needed. Also make sure the fuel fill cap is securely fastened. Check for leaks. Tires Use a gauge to check the air pressure. Adjust if needed.
Page 45: Rear Brake Pedal
Is Your ATV Ready to Ride? Cable Check the cable housings for wear. Check the fittings for looseness. Replace or tighten as needed. Lights Make sure the headlight, brakelight and taillight are working properly. If you are carrying cargo, also check the following: Loading Limits Make sure you do not exceed the load limits (page...
Page 46 Move the handlebar right and left and check that there is no excessive backlash. Remember, be sure to take care of any problem you find, or have your Honda dealer correct it before you ride. Before Riding...
Page 47: Load Limits & Guidelines
Load Limits & Guidelines Your Honda was designed as a rider-only ATV. It was not designed to carry a passenger. It can carry cargo on the cargo racks, however, carrying cargo anywhere else or carrying a passenger could interfere with your balance and control of the ATV.
Page 48: Load Limits
Load Limits & Guidelines Load Limits Following are the load limits for your ATV: There are limits to how much weight can be carried on your ATV and be pulled in a trailer. The following load limits apply to standard equipment only. Modifying your ATV, using non-standard equipment, or riding on terrain that is not flat and smooth could further reduce these limits.
Page 49: Loading Guidelines
Load Limits & Guidelines Loading Guidelines Carrying cargo or pulling a trailer will affect how your ATV handles and greatly reduce its ability in accelerating, braking and making turns and other maneuvers. Be sure to observe the weight limits and follow these guidelines: Check that the tires are properly inflated.
Page 50: Accessories & Modifications
Honda cannot test all other accessories, you must be personally responsible for proper selection, installation, and use of non-Honda accessories. Check with your Honda dealer for assistance and always follow these guidelines: Make sure the accessory does not obscure any lights, reduce ground clearance, limit suspension travel or steering travel, or interfere with operating any controls.
Page 51: Modifications
Accessories & Modifications Modifications We strongly advise you not to remove any original equipment or modify your ATV in any way that would change its design or operation. Such changes could seriously impair your ATV’s handling, stability, and braking, making it unsafe to ride. We also advise you not to make any modifications or remove any equipment (such as the USDA qualified spark arrester or emission control system components) that would make your ATV illegal in your...
Page 52 Before Riding...
Page 53: Basic Operation & Riding
Basic Operation & Riding This section gives basic riding instructions, including how to start and stop your engine, and how to use the throttle and brakes. It also provides important information on riding with cargo. To protect your new engine and enjoy optimum performance and service life, refer to Break-in Guidelines (page Safe Riding Precautions ................
Page 54 Basic Operation & Riding Braking ....................Riding Your ATV ................. Making Turns ..................Skidding or Sliding ................Riding Up Hills ................. Riding Down Hills ................Crossing or Turning on Hills or Slopes ..........Riding Over Obstacles ..............Riding Through Water ..............
Page 55: Safe Riding Precautions
Safe Riding Precautions Before riding your ATV for the first time, please review the ATV Saf ety section beginning on page 1, and the Bef ore Riding section beginning on page Even if you have ridden other ATVs, take time to become familiar with how this ATV works and handles.
Page 56: Keep Hands And Feet On Controls
Safe Riding Precautions You should never ride your ATV on public streets, roads or highways, even if they are not paved. Drivers of street vehicles may have difficulty seeing and avoiding you, which could lead to a collision. In many states it is illegal to operate ATVs on public streets, roads and highways.
Page 57: Control Speed
Safe Riding Precautions Control Speed Riding at excessive speed increases the chance of an accident. In choosing a proper speed, you need to consider the capability of your vehicle, the terrain, visibility and other operating conditions, plus your own skills and experience. Operating this ATV at excessive speeds increases your chances of losing control of the ATV, which can result in an accident.
Page 58: Use Care On Unfamiliar Or Rough Terrain
Safe Riding Precautions Use Care on Unfamiliar or Rough Terrain Before riding in a new area, always check the terrain thoroughly. Don’t ride fast on unfamiliar terrain or when visibility is limited. (It’s sometimes difficult to see obstructions like hidden rocks, bumps, or holes in time to react.) Failure to use extra care when operating this ATV on unfamiliar terrain could result in the ATV...
Page 59: Do Not Perform Stunts
Safe Riding Precautions Never ride past the limit of visibility. Maintain a safe distance between your ATV and other off-road vehicles. Always exercise caution, and use extra care on rough, slippery and loose terrain. Failure to use extra care when operating on excessively rough, slippery or loose terrain could cause loss of traction or vehicle control, which could result in an accident, including an...
Page 60: Starting & Stopping The Engine
Starting & Stopping the Engine Always follow the proper starting procedure described below. For your safety, avoid starting or operating the engine in an enclosed area such as a garage. Your ATV’s exhaust contains poisonous carbon monoxide gas which can collect rapidly in an enclosed area and cause illness or death.
Page 61: Starting Procedure
Starting & Stopping the Engine Starting Procedure This vehicle has a fuel-injected with an automatic choke. Follow the procedure indicated below. Any Air Temperature Press the start button with the throttle completely closed. The engine will not start if the throttle is fully open (Because the electronic control module cuts off the fuel supply).
Page 62: Ignition Switch
Starting & Stopping the Engine Flooded Engine If the engine fails to start after repeated attempts, it may be flooded with excess fuel. To clear a flooded engine: Leave the engine stop switch set to RUN ( Open the throttle fully. Press the start button for 5 seconds.
Page 63: Start Button
Starting & Stopping the Engine Stalled Engine You can restart the engine while the vehicle is stopped by squeezing the front brake lever and pressing the start button. Do not press the throttle lever while starting in gear. Your ATV is equipped with a start inhibitor system that will cut off the ignition if the throttle is open while attempting to start in gear.
Page 64: How To Stop The Engine
Starting & Stopping the Engine How to Stop the Engine Normal Engine Stop To stop the engine, make sure the transmission is in neutral by checking that the neutral indicator lights, and turn the ignition switch OFF ( The engine stop switch should normally remain in the RUN ( position even when the engine is OFF.
Page 65: Shifting Gears
Shifting Gears UPSHIFTING SEQUENCE DOWNSHIFTING SEQUENCE Your ATV has five forward gears: 1, 2, 3, 4, and 5. The shift lever is located near the left footpeg. One full stroke of the shift lever shifts the transmission to the next higher or lower gear in the shifting sequence.
Page 66 Shifting Gears With the throttle closed, raise the shift lever one full stroke to shift into 1st (first) gear. Release the rear brake lever and increase engine speed by gradually opening the throttle. When speed increases, release the throttle and shift to 2nd gear by raising the shift lever one full stroke.
Page 67: Riding In Reverse
Riding in Reverse If you need to ride in reverse, make sure the area behind you is clear and only operate the ATV at low speed. Improperly operating in reverse could cause you to hit an obstacle or person behind you, resulting in serious injury.
Page 68 Riding in Reverse Release the rear brake lever/parking brake lever. Open the throttle gradually and ride slowly. Do not open the throttle suddenly or make abrupt turns. To stop, close the throttle and gradually apply both the front and rear brakes.
Page 69: Braking
Braking Your ATV is equipped with disc brakes on both front wheels which are hydraulically activated by operating the right brake lever. A single drum brake on the rear axle housing is mechanically activated by depressing the brake pedal or operating the left brake lever. TRX420FM only: Although the front and rear brakes have separate controls, all four wheels are interconnected when your ATV is in the 4WD mode.
Page 70 Braking Your ability to brake in a turn and to brake hard in an emergency situation are important riding skills. When descending a long, steep grade, use engine compression braking by downshifting, with intermittent use of both brakes. Continuous brake application can overheat the brakes and reduce their effectiveness.
Page 71: Riding Your Atv
Riding Your ATV Making Turns Learn how to turn your ATV properly. Practice the techniques outlined in this section on level ground and at low speeds until you are confident in making turns. Turning improperly can make the ATV go out of control, causing a collision or overturn.
Page 72 Riding Your ATV Lean your body to the inside of a turn and forward. To make a turn on level ground: Steer the handlebar and lean your body toward the inside of the turn. Leaning helps balance the vehicle, and it feels more comfortable.
Page 73: Skidding Or Sliding
Riding Your ATV Skidding or Sliding The terrain surface can be a major factor affecting turns. Skidding during a turn is more likely to occur on slippery surfaces, such as snow, ice, mud and loose gravel. If you skid on ice, you may lose all directional control.
Page 74: Riding Up Hills
Riding Your ATV Riding Up Hills The ATV’s ability to safely climb hills largely depends on the rider’s skill and judgment. Begin by practicing on smooth, gentle slopes. As you gain experience, you’ll learn the hazards and your own limitations. You may then proceed to ride on more difficult terrain.
Page 75 Riding Your ATV Shift weight forward when climbing hills. Always check the terrain carefully before you start up any hill. Never climb hills with excessively slippery or loose surfaces. To climb a hill, take a running start in an appropriate gear and speed for the conditions.
Page 76 Riding Your ATV Stalling the ATV and/or Rolling Backwards: If you incorrectly estimate climbing capability or terrain conditions, the ATV may not have enough power or traction to continue uphill. If this happens, the ATV can stall and/or roll backwards. Stalling, rolling backwards or improperly dismounting while climbing a hill could result in the ATV overturning.
Page 77 Riding Your ATV What to do after the ATV has stalled or rolled backwards: If the hill is too steep or too slippery, or if you have any doubt whether you can safely walk the ATV back down the hill, leave the vehicle where it is and get help.
Page 78: Riding Down Hills
Riding Your ATV Riding Down Hills It’s usually advisable to descend hills with the ATV pointed straight downhill. Avoid angles that would cause the vehicle to lean sharply to one side. Going down a hill improperly could cause loss of control or cause the ATV to overturn. Always follow proper procedures for going down hills as described in this owner’s manual.
Page 79: Crossing Or Turning On Hills Or Slopes
Riding Your ATV When you’ve selected a safe downhill path, shift into a lower gear, shift your weight back with your arms extended and braced against the handlebar, then go down slowly with the throttle closed. Use mainly the rear brake to control speed. Avoid using either the front brake or rear brake hard or abruptly when riding down hills.
Page 80 Riding Your ATV Crossing Hills or Slopes To maintain balance and stability when riding across a slope, you need to shift weight toward the uphill side of the vehicle. To do this, move your body off the center of the seat and lean toward the uphill side.
Page 81: Riding Over Obstacles
Riding Your ATV Riding Over Obstacles Before operating in a new area, check for obstacles. Watch out for bumps, rain ruts, potholes and other obstacles in the terrain. When you approach any obstacle, reduce your speed and be prepared to stop. Never try to ride over large obstacles, such as large rocks or fallen logs.
Page 82: Riding Through Water
Riding Your ATV Riding Through Water Your ATV is designed to travel through water up to approximately 10 inches (254 mm) deep. Before crossing a stream, make sure the water is not too deep or flowing too fast. The ATV tires have some ability to float. Operating this ATV through deep or fast-flowing water may cause a loss of traction and loss of control, which could lead to an accident.
Page 83: Parking
Parking Look for level parking area. Make sure the ground surface is firm. After bringing your ATV to a stop, hold the brakes while you shift into neutral. Set the parking brake. Turn the ignition switch OFF ( If you’re through riding for the day, turn the fuel valve OFF. If it is necessary to start the engine when your ATV is stopped on a grade in gear, rock the vehicle back and forth to allow shifting the transmission into neutral.
Page 84 Basic Operation & Riding...
Page 85: Servicing Your Honda
Maintenance, replacement or repair of the emission control devices and systems may be performed by any ATV repair establishment or individual using parts that are ‘‘certified’’ to EPA standards. Bef ore You Service Your Honda The Importance of Maintenance ............
Page 86 Servicing Your Honda Service Procedures Fluids & Filters Fuel ....................... Engine Oil & Filter ................Gear Case Oil ..................Differential Oil ( TRX420FM only) ........... Coolant ....................Air Cleaner ..................Engine Throttle ....................Clutch System ................... Reverse Lock System ................
Page 87: The Importance Of Maintenance
Frequent servicing of the air cleaner is especially important to help you avoid a possible costly engine repair. If your ATV overturns or is involved in a crash, be sure your Honda dealer inspects all major parts, even if you are able to make some repairs.
Page 88: Maintenance Safety
Other tasks that are more difficult and require special tools are best performed by professionals. Removing the wheels should normally be handled only by a Honda technician or other qualified mechanic. Instructions are included in this manual only to assist in emergency service.
Page 89: Important Safety Precautions
Keep cigarettes, sparks, and flames away from all fuel-related parts. Remember that your Honda dealer knows your ATV best and is fully equipped to maintain and repair it. To ensure the best quality and reliability, use only new genuine Honda parts or other equivalents for repair and replacement.
Page 90: Maintenance Schedule
Other items involve more extensive procedures and may require special training, tools, and equipment. We recommend that you have your Honda dealer perform these tasks unless you have advanced mechanical skills and the required tools and equipment.
Page 91 ) may require more technical information and tools. Consult your Honda dealer. Should be serviced by your Honda dealer, unless you have the proper tools and service data and are mechanically qualified. Refer to the official Honda Service Manual (page In the interest of safety, we recommend these items be serviced only by your Honda dealer.
Page 92: Maintenance Procedures
ENGINE OIL FILTER RADIATOR COOLANT NOTE 3 COOLING SYSTEM NOTE 2 Should be serviced by your Honda dealer, unless you have the proper tools and service data and are mechanically qualified. Refer to the official Honda Service Manual (page Servicing Your Honda...
Page 93 HOLDER BEARINGS STEERING SYSTEM Should be serviced by your Honda dealer, unless you have the proper tools and service data and are mechanically qualified. Refer to the official Honda Service Manual (page In the interest of safety, we recommend these items be serviced only by your Honda dealer.
Page 94: Maintenance Record
Miles (km) or ODO or Date Performed Notes hours HOUR 100 (150) or 600 (1,000) or 1,200 (2,000) or 1,800 (3,000) or 2,400 (4,000) or 3,000 (5,000) or 3,600 (6,000) or 4,200 (7,000) or 4,800 (8,000) or Servicing Your Honda...
Page 95: Maintenance Component Locations
Maintenance Component Locations rear brake lever/parking brake lever front brake fluid reservoir front brake lever throttle lever fuel fill cap Servicing Your Honda...
Page 96 Maintenance Component Locations differential oil filler cap (TRX420FM only) differential oil drain bolt (TRX420FM only) coolant reserve tank air cleaner air cleaner housing front brake drain tube caliper rear brake pedal rear brakelight switch engine oil filter Servicing Your Honda...
Page 97 Maintenance Component Locations owner’s manual air pressure gauge spark plug battery fuse box main fuse tool kit clutch engine oil drain bolt spark arrester engine oil filler cap/dipstick gear case oil filler cap gear case oil drain bolt Servicing Your Honda...
Page 98: Tool Kit
The tool kit ( ) is stored in the storage compartment ( ) below the rear cargo rack. To open the compartment, unhook the rubber strap ( ). An optional, larger tool kit may be available. Check with your Honda dealer’s parts department. REAR...
Page 99: Owner's Manual Storage
( ). To remove the seat, see page Be careful not to flood this area when washing your ATV. SEAT UNDERSIDE (1) owner’s manual (3) air pressure gauge (2) seat (4) plastic document bag Servicing Your Honda...
Page 100: Seat Removal
Slide the seat ( ) back and lift it. Installation Insert the front prongs ( ) into the hooks ( ) on the frame and press the studs ( ) into the grommets ( ). Press down on the seat until locks. Servicing Your Honda...
Page 101: Clip Removal
Press down on the center pin to release the lock. Pull the clip out of the hole. Installation Push the bottom of the pin. Insert the clip into the hole. Lightly press down on the center pin to lock the clip. Servicing Your Honda...
Page 102: Fuel
If pinging or spark knock occurs at a steady engine speed under normal load, change brands of gasoline. If pinging or spark knock persists, consult your Honda dealer. Never use stale or contaminated gasoline or an oil/gasoline mixture. Avoid getting dirt, dust, or water in the fuel tank.
Page 103 ON position after refueling to avoid running out of fuel with no reserve. Refueling Procedure Refer to Saf ety Precautions on page (1) fuel fill cap (3) handlebar cover hole (2) breather tube (4) filler neck Servicing Your Honda...
Page 104 After refueling, turn the fuel fill cap clockwise until it clicks. Insert the breather tube into the handlebar cover hole. If the fuel valve was set to RES, turn the fuel valve ON. If you replace the fuel fill cap, use only a genuine Honda replacement part. Servicing Your Honda...
Page 105: Engine Oil & Filter
Change the engine oil as specified in the maintenance schedule on page . When running in very dusty conditions, oil changes should be performed more frequently than specified in the maintenance schedule. Servicing Your Honda...
Page 106 SAE 10W-30 JASO T 903 standard suggested oil Pro Honda GN4 4-stroke oil (USA & Canada), or Honda 4-stroke oil (Canada only), or an equivalent motorcycle oil. Suggested oils are equal in performance to SJ oils that are not labeled as energy conserving on the circular API service label.
Page 107 There are two classes: MA and MB. Oil conforming to the standard is labeled on the oil container. For example, the following label shows the MA classification. (1) code number of the sales company of the oil (2) oil classification Servicing Your Honda...
Page 108 Start the engine in a well-ventilated area and let it idle for 3 5 minutes. Stop the engine and wait 2 3 minutes. Remove the seat (page Unsnap and remove the left side cover ( ). LEFT SIDE (1) left side cover Servicing Your Honda...
Page 109 Reinstall the oil filler cap/dipstick. Install the left side cover. Install the seat. Running the engine with an improper oil level can cause serious engine damage. LEFT SIDE (2) oil filler cap/dipstick (3) upper level mark (4) lower level mark Servicing Your Honda...
Page 110 Your ATV’s oil filter has very specific performance requirements. Use a new genuine Honda oil filter specified for your model or a filter of equal quality. Using the wrong oil f ilter may result in leaks or premature engine damage.
Page 111 Engine Oil & Filter Install a New Engine Oil Filter: Remove the seat (page Unsnap and remove the right side cover ( ). RIGHT SIDE (1) right side cover (cont’d) Servicing Your Honda...
Page 112 Check that the oil filter cover O-rings ( ) are in good condition and then install a new oil filter. Use only the Honda genuine oil filter or a filter of equivalent quality specified for your model. Using the wrong Honda filter or a non-Honda filter which is not of equivalent quality may cause engine damage.
Page 113 If necessary, add more oil but do not overfill. Check that there are no oil leaks. Install the left side cover. Install the seat. If a torque wrench is not used for installation, see your Honda dealer as soon as possible to verify proper assembly. Servicing Your Honda...
Page 114: Gear Case Oil
Oil Recommendation type hypoid gear oil viscosity (weight) SAE 80 suggested oil Honda shaft drive oil or equivalent Changing Oil Refer to Saf ety Precautions on page Change the oil with the gear case at normal operating temperature to assure complete and rapid draining.
Page 115 Remove the oil level check bolt ( ). Make sure the oil level reaches the oil level check hole ( ). Install the oil filler cap and oil level check bolt. REAR (1) oil drain plug (3) oil level check bolt (2) oil filler cap (4) oil level check hole Servicing Your Honda...
Page 116: Differential Oil (Trx420Fm Only)
Oil Recommendation type hypoid gear oil viscosity (weight) SAE 80 suggested oil Honda shaft drive oil or equivalent Changing Oil Refer to Saf ety Precautions on page Change the oil with the differential at normal operating temperature to assure complete and rapid draining.
Page 117 Make sure the oil level is at the lower edge of the oil filler inspection hole ( ). Install the oil filler cap. FRONT (1) oil drain plug (3) oil filler inspection hole (2) oil filler cap Servicing Your Honda...
Page 118: Coolant
Maintaining the coolant will allow the cooling system to work properly and prevent freezing, overheating, and corrosion. Coolant Recommendation Use Pro Honda HP coolant or an equivalent high quality ethylene glycol antifreeze containing corrosion protection inhibitors specifically recommended for use in aluminum engines. Check the antifreeze container label.
Page 119 ( ). It should be between the UPPER ( ) and LOWER ( ) level marks. If the reserve tank is empty, or if coolant loss is excessive, check for leaks and see your Honda dealer for repair. (cont’d) Servicing Your Honda...
Page 120 Add coolant to the reserve tank as required to bring the coolant level to the UPPER level mark. REAR (4) rubber strap (6) reserve tank cap (5) rear fender cover After adding coolant, install the reserve tank cap and rear fender cover. Fasten the rubber strap. Install the seat. Servicing Your Honda...
Page 121 Refer to Saf ety Precautions on page Coolant should be replaced by your Honda dealer, unless you have the proper tools and service data and are mechanically qualified. Refer to the official Honda Service Manual (page Removing the radiator cap while the engine is hot can cause the coolant to spray out, seriously scalding you.
Page 122 Check the air passages for clogging or damage. Remove insects, mud, or any obstruction with low water pressure. Have the radiator checked by your Honda dealer if the air flow is restricted over more than 20% of the radiator surface.
Page 123 Coolant Remove the radiator grill plate ( ). Wash the radiator core ( ) and radiator grill plate. Install the removed parts in reverse order of removal. FRONT (7) radiator grill plate (8) radiator core Servicing Your Honda...
Page 124: Air Cleaner
Your ATV’s air cleaner has very specific performance requirements. Use a new genuine Honda air cleaner specified for your model or an air cleaner of equal quality. Using the wrong air cleaner may result in premature engine damage.
Page 125 Air Cleaner Cleaning Remove the seat (page UNDER SEAT (1) retainer clips (2) air cleaner housing cover Unlatch the retainer clips ( ). Remove the air cleaner housing cover ( ). (cont’d) Servicing Your Honda...
Page 126 Pour clean Pro Honda Foam Filter Oil or an equivalent (Canada: Honda Foam Filter Oil or an equivalent) over the entire surface of the air cleaner. Use both hands to evenly spread the oil into the air cleaner.
Page 127 Install the air cleaner housing cover with the FRONT mark ( facing forward and fit the cut out of the tab ( ) at the end of the air cleaner. UNDER SEAT (8) FRONT mark (9) tab Servicing Your Honda...
Page 128 Air Cleaner Dust Cover UNDER SEAT (1) dust cover (2) breather joint Do not push the dust cover ( ) too far into the breather joint ( ). If the dust cover is dirty, clean it. Servicing Your Honda...
Page 129 (3) air cleaner housing (2) clip Remove the drain tube ( ) by removing the clip ( ) under the air cleaner housing ( ). Drain the deposits. Reinstall the drain tube, securing it with the clip. Servicing Your Honda...
Page 130: Throttle
Loosen the lock nut ( ). Turn the adjuster to obtain the correct freeplay. Tighten the lock nut and reinstall the sleeve. After adjustment, check for smooth operation of the throttle lever from fully closed to fully open in all steering positions. Servicing Your Honda...
Page 131 If the cable is kinked or chafed, have it replaced. Check the cables for tension or stress in all steering positions. Lubricate the cables with a commercially-available cable lubricant to prevent premature wear and corrosion. Servicing Your Honda...
Page 132: Clutch System
Install the removed parts in reverse order of removal. If you cannot get proper adjustment, or the clutch does not work properly, the clutch friction discs may be worn. See your Honda dealer or refer to official Honda Service Manual (page...
Page 133: Reverse Lock System
After adjustment, tighten the lock nut securely. Return the dust cover and rubber sleeve. Other Checks Check the reverse assist lever and cable for loose connections or other damage. If the cable is worn or kinked, have it replaced by your Honda dealer. Servicing Your Honda...
Page 134: Spark Plug
Saf ety Precautions on page Remove the seat (page ) and left side cover (page Remove the left tank side cover ( ) by removing the bolts ( ). LEFT SIDE (1) left tank side cover (2) bolts Servicing Your Honda...
Page 135 ( ) should not be eroded. If the electrodes and insulator tip appear unusually fouled or burned, we suggest that you contact your Honda dealer. Discard the spark plug if there is apparent wear or if the insulator is cracked or chipped.
Page 136 If a plug is too tight, the threads may be damaged. Connect the spark plug cap. Take care to avoid pinching any cables or wires. Install the remaining parts in the reverse order of removal. Servicing Your Honda...
Page 137: Valves
For those who are mechanically proficient and have the proper tools, instructions on adjusting valve clearances are given in the official Honda Service Manual. All others should have valves adjusted by your Honda dealer. Servicing Your Honda...
Page 138: Spark Arrester
Start the engine and rev it up approximately twenty times while momentarily creating exhaust system back pressure by blocking the end of the muffler with a shop towel. Stop the engine and allow the exhaust pipe to cool. Reinstall the bolt securely. Servicing Your Honda...
Page 139: Brakes
Honda DOT 4 Brake Fluid The recommended brake fluid is Honda DOT 4 Brake Fluid, or any brake fluid of equal quality and performance. Use fresh brake fluid from a sealed container. Be sure to read the label before opening the sealed container.
Page 140 Do not add or replace brake fluid, except in an emergency. If you do add fluid, have your Honda dealer check the system as soon as possible. Brake f luid can damage plastic and painted surf aces. Handle with care.
Page 141 Other Inspections Make sure there are no fluid leaks. Check for deterioration or cracks in the hoses and fittings. If the hoses are worn or cracked, have them replaced by your Honda dealer. Servicing Your Honda...
Page 142 (2) edge of reference mark Check the wear indicator ( ). If the wear indicator aligns with the edge of the reference mark ( ), both pads must be replaced, see your Honda dealer for this replacement. Always inspect both pads in both the right and left front brake calipers.
Page 143: Rear Brake Pedal Freeplay
Measure the distance the rear brake pedal ( ) moves before the brake starts to take hold. Freeplay, measurement at the tip of the end of the pedal, should be: 9/16 13/16 in (15 20 mm) If necessary, adjust to the specified range. Servicing Your Honda...
Page 144 Turn the brake pedal adjusting nut ( ), located on the brake operating rod at the rear of the frame. Make sure the cutout on the adjusting nut is properly seated on the brake arm pin ( ). Servicing Your Honda...
Page 145: Rear Brake Lever Freeplay
Measure the distance the rear brake lever/parking brake lever ( ) moves before the brake starts to take hold. Freeplay, measurement at the tip of the end of the brake lever, should be: 9/16 13/16 in (15 20 mm) If necessary, adjust to the specified range. Servicing Your Honda...
Page 146 ( ). Other Inspections Check that the brake lever and brake pedal assemblies are positioned properly and the securing bolts are tight. Make sure that the brake cables, brake arm, spring, and fasteners are in good condition. Servicing Your Honda...
Page 147 ( ). Replace the brake shoe if the arrow aligns with the reference mark ( ) on the brake panel upon full application of the brake. If replacement is necessary, see your Honda dealer. Servicing Your Honda...
Page 148: Brakelight Switch Adjustment
. Adjustment is done by turning the adjusting nut ( ). Turn the nut in direction ( ) if the switch operates too late and in direction ( ) if the switch operates too soon. RIGHT SIDE (1) rear brakelight switch (2) adjusting nut Servicing Your Honda...
Page 149 Make sure the engine is off and the parking brake is set. Remove the rear brake drain bolt ( ) from the bottom of the rear brake panel. If any water drains, the brake seals must be replaced by your Honda dealer as soon as possible. Servicing Your Honda...
Page 150: Tires
Always select your riding area with care. The following pages give detailed information on how and when to check your air pressure, how to inspect your tires for wear and damage, and our recommendations for tire repair and replacement. Servicing Your Honda...
Page 151 Overinflated tires make your ATV ride harshly, are more prone to damage from surface hazards, and wear unevenly. Make sure the air valve caps are secure. If necessary, install a new cap. Servicing Your Honda...
Page 152 REAR RECOMMENDED 3.6 psi (25 kPa , 3.6 psi (25 kPa , PRESSURE 0.25 kgf/cm ) 0.25 kgf/cm ) RECOMMENDED 3.6 psi (25 kPa , 3.6 psi (25 kPa , PRESSURE 0.25 kgf/cm ) 0.25 kgf/cm ) Servicing Your Honda...
Page 153 Cuts, slits, or cracks in the tires. Replace the tire if you can see fabric or cord. Nails or other foreign objects embedded in the side of the tire or tread. Excessive tread wear. Servicing Your Honda...
Page 154 ( ). For best performance, you should replace a tire before the tread depth at the center reaches the following limits: 3/16 in (4 mm) front 3/16 in (4 mm) rear Servicing Your Honda...
Page 155: Tire Repair
If you choose to have a tire repaired, be sure the repair work is performed by a professional. If you have a tire professionally repaired at a non-Honda facility, we recommend that you have the work checked by your Honda dealer.
Page 156 When you replace a tire, remember: Have the tire replaced by your Honda dealer if possible. If you have a tire professionally replaced at a non-Honda facility, we recommended that you have the work checked by your Honda dealer. Servicing Your Honda...
Page 157: Engine Guard & Skid Plate
Maintenance Schedule. Have the engine guard and skid plate replaced if they are cracked or damaged. If the guard and plate bolts are loose, tighten them securely. Servicing Your Honda...
Page 158: Driveshaft Boots (Trx420Fm Only)
Driveshaft Boots (TRX420FM only) Refer to Saf ety Precautions on page FRONT (1) rubber driveshaft boots Check the rubber driveshaft boots ( ) for damage or leaking grease. If necessary, have your Honda dealer replace them. Servicing Your Honda...
Page 159: Propeller Shaft Boots & Yoke Joint Boot
(1) rubber propeller shaft boots (TRX420FM only) (2) rubber yoke joint boot Check the rubber propeller shaft boots ( ) and rubber yoke joint boot ( ) for damage or leaking grease. If necessary, have your Honda dealer replace them. Servicing Your Honda...
Page 160: Battery
If you plan to store your ATV, see Battery Storage, page If your battery seems weak and/or is leaking electrolyte (causing slow starting or other electrical problems), see your Honda dealer. WARNING: Battery posts, terminals and related accessories contain lead and lead compounds.
Page 161 A spark or flame can cause the battery to explode with enough force to kill or seriously hurt you. Wear protective clothing and a face shield, or have a skilled mechanic do the battery maintenance. Servicing Your Honda...
Page 162 Remove the rear fender cover (page Release the rings and remove the rubber band ( ). Disconnect the negative ( ) terminal lead ( ) from the battery ( ) first, then disconnect the positive ( ) terminal lead ( ). Servicing Your Honda...
Page 163 Slow charge the battery (see following section) once every 30 days. Installation Reinstall in the reverse order of removal. Be sure to connect the positive ( ) terminal first, then the negative ( ) terminal. Check all bolts and other fasteners are secure. Servicing Your Honda...
Page 164: Battery Charging
However, do not intentionally leave the charger connected longer than the time period recommended in the charger’s instructions. Avoid using an automotive-type battery charger. An automotive charger can overheat an ATV battery and cause premature damage. Servicing Your Honda...
Page 165: Appearance Care
Appearance Care Frequent cleaning and polishing will keep your Honda looking newer longer. Frequent cleaning also identifies you as an owner who values his ATV. A clean ATV is also easier to inspect and service. General Recommendations Refer to Saf ety Precautions...
Page 166 As a precaution, ride your ATV at a slow speed and apply the brakes several times. This will help dry the brakes and restore normal braking performance. If the inside of the headlight lens appears clouded immediately after washing, it should clear after a few minutes of riding. Servicing Your Honda...
Page 167 Brake dust. necessary, rub with a sponge. Rinse and dry. Apply a spray cleaner/polish and wipe with a non-abrasive cloth. Dull, corroded chrome Apply a high quality chrome/ or aluminum. aluminum polish and wipe with a non-abrasive cloth. Servicing Your Honda...
Page 168 Apply the polish or wax according to the instructions on the container. If a surface on your ATV is chipped or scratched, your Honda dealer has touch-up paint to match your ATV’s color. Be sure to use your ATV’s color code (page ) when you buy touch-up paint.
Page 169: Tips
Tips Here’s helpful advice on how to prepare for an off-road adventure, how to transport and store your Honda, and how to be an environmentally responsible ATV owner. Preparing for a Ride ................What to Take to the Riding Area ..........
Page 170: Preparing For A Ride
Preparing for a Ride A safe and enjoyable ride begins with good planning and preparation. Always ride with at least one other person in case you have trouble, and let someone know where you’re going and when you expect to return. Before riding in an unfamiliar area, find out in advance if you need special permits, get maps so you can study the terrain, and talk to other riders who know the area.
Page 171: What To Take On The Trail
Preparing for a Ride What to Take on the Trail What you take with you during a ride depends on the kind of terrain, how long you expect to ride, how far you might go from your base camp or help, and how experienced you or your companions are in making repairs.
Page 172: Transporting Your Honda
Transporting Your Honda Do not tow your ATV behind a car or other vehicle. When you transport your ATV, we recommend that you carry the vehicle in its normal operating position (on all four wheels). Do not incline the vehicle upright on its rear end. This can damage the vehicle, and leaking gasoline could be a hazard.
Page 173 Transporting Your Honda Secure the vehicle with ‘‘tie-down straps’’ in the areas shown. Suitable ‘‘tie-down straps’’ are available from your Honda dealer. Ordinary rope is not recommended because it can stretch under load. Using ‘‘tie-down straps’’ in any other areas can damage your ATV.
Page 174: Storing Your Honda
For more information about storage, refer to the Honda Motorcycle Winter Storage Guide, available from your Honda dealer (USA only). We suggest you perform the following procedures to keep your ATV in top condition. These storage procedures will reduce the deterioration that can occur during storage.
Page 175: Preparation For Storage
Storing Your Honda Preparation for Storage Refer to Saf ety Precautions on page Change the engine oil and filter (page Make sure the cooling system is filled with a 50/50% antifreeze solution (page Fill the fuel tank. Make sure the fuel fill cap is properly installed.
Page 176 Storing Your Honda Remove the battery and charge it fully. Store it in an area protected from freezing temperatures and direct sunlight. Slow charge the battery (page ) once a month. The battery gives off explosive hydrogen gas during normal operation.
Page 177: Removal From Storage
(page If your ATV has been stored for more than two months ask your Honda dealer to drain and replace the fuel. Charge the battery (page ) as required. Install the battery. Perform a pre-ride inspection (page ), then test-ride your ATV at low speeds.
Page 178: You & The Environment
You & the Environment Owning and riding an ATV can be enjoyable, but you must do your part to protect nature. When you show respect for the land, wildlife, and other people, you also help preserve the sport of off-road riding. Following are tips on how you can be an environmentally-responsible ATV owner.
Page 179: Taking Care Of The Unexpected
Taking Care of the Unexpected With all the challenges you can encounter off-road, there’s a chance that sometime something may go wrong. This section gives practical advice to help you deal with a wide range of problems. Take time to read this section before you ride.
Page 180: Taking Care Of The Unexpected
Taking Care of the Unexpected General Guidelines Keeping your ATV well-maintained is the best way to reduce the possibility of having a problem while riding. However, problems can arise even with well-maintained machines. Remember to take along your owner’s manual, the tool kit that came with your ATV, and any other items (such as tire repair supplies and additional tools) that might help you solve a problem on your own.
Page 181 Taking Care of the Unexpected Should you ever have a problem while riding, please follow these guidelines: Always put personal safety first. Take time to assess the situation and your options before deciding what to do. If the problem is relatively minor and you have the tools, supplies, and skills to make a temporary repair, be sure to have permanent repairs made as soon as possible.
Page 182: If Your Engine Quits Or Won't Start
If you have a problem starting the engine or experience poor engine performance the following information may help you. If you can’t correct the problem, see your Honda dealer. If your ATV won’t start, listen as you press the start button. If you don’t hear the starter motor turning, refer to the Starter motor doesn’t operate...
Page 183 If charging doesn’t help, see your Honda dealer. faulty starter motor If all possible causes are negative, the starter motor may be faulty. See your Honda dealer. SYMPTOM: Starter motor works, but the engine won’t start. POSSIBLE CAUSE WHAT TO DO out of fuel Fill the fuel tank.
Page 184 Check the high coolant temperature temperature indicator. Refer to If the High Coolant T emperature Indicator Lights, page runs erratically, See your Honda dealer. misfires blubbers (rich fuel See your Honda dealer. mixture) sooty exhaust (rich See your Honda dealer. fuel mixture)
Page 185: If You Have A Flat Tire
Follow the instructions provided with the repair kit to make a temporary repair. As soon as possible, have the tire permanently repaired by your Honda dealer. Any tire that cannot be repaired should be replaced. Whenever the ATV is to be operated far from service facilities or available transportation, we recommend that you carry a tire pump and a repair kit with the vehicle.
Page 186 If You Have a Flat Tire Emergency Wheel Removal/Installation Refer to Saf ety Precautions on page (1) wheel nuts (2) wheel rim Removal Park your ATV on a firm, level surface. Raise the front (or rear) wheels off the ground and place a support block under the vehicle.
Page 187 47 lbf·ft (64 N·m , 6.5 kgf·m) If a torque wrench was not used for installation, see your Honda dealer as soon as possible to verify proper assembly. Improper assembly may lead to loss of braking capability.
Page 188: If The High Coolant Temperature Indicator Lights
If the High Coolant Temperature Indicator Lights Normally, the high coolant temperature indicator will only light momentarily when you turn the ignition ON ( ). Occasionally, it may flicker at or near idling speed. High coolant temperature may be caused by restriction of air flow to the radiator (such as mud caked on the radiator), extended idling, an oil leak, a coolant leak, a low oil level, a low coolant level, or extended operation under adverse conditions.
Page 189 If there’s a mild coolant leak, you can ride for awhile, carefully watching the indicator. Be prepared to stop and add more coolant or water. If the leak is bad, transport your ATV to a Honda dealer (page Taking Care of the Unexpected...
Page 190: If A Fuse Blows
If a Fuse Blows All of the electrical circuits on your ATV have fuses to protect them from damage caused by excess current flow (short circuit or overload). If something electrical on your ATV stops working, the first thing you should check for is a blown fuse ( ).
Page 191 If a Fuse Blows Main Fuse Access To prevent an accidental short circuit, turn the ignition switch OFF ) before checking or replacing the fuses. Remove the seat (page Remove the rear fender cover (page To access the main fuse ( ), remove the fuse box cover ( ). UNDER SEAT (2) main fuse (4) spare main fuse...
Page 192 If a Fuse Blows Circuit Fuse Access (5) circuit fuses (6) spare fuses To check or replace a circuit fuse ( ), pull the old fuse out of its retaining clips. If the fuse is blown, replace it with a spare fuse ( ) of the same rating. If you do not have a replacement fuse with the proper rating for the circuit, install one with a lower rating.
Page 193 If the replacement fuse of the same rating burns out in a short time, there is probably a serious electrical problem on your ATV. Leave the blown fuse in that circuit and have your ATV checked by your Honda dealer.
Page 194: If You Crash
Sometimes, crash damage is hidden or not immediately apparent. When you get home, thoroughly check your ATV and correct any problems you find. Also, be sure to have your Honda dealer check the frame and suspension after any serious crash.
Page 195: If You Lose Your Key
If you don’t know your key number, call the dealer you purchased your Honda from. They may have it listed in their records. If they don’t, transport your ATV to them or the nearest Honda dealer.
Page 196: If The Battery Is Low (Or Dead)
The greater amperage of an automobile battery when the car engine is running can damage your ATV’s electrical system. Bump starting is also not recommended. If you can’t charge the battery or it appears unable to hold a charge, contact your Honda dealer. Taking Care of the Unexpected...
Page 197: If A Component Fails
If a Component Fails The brake levers or pedal, control cables, and other components can be damaged as you ride in dense brush or over rocky terrain. Making a trailside repair depends on how serious the damage is and what tools and supplies you have with you.
Page 198 Taking Care of the Unexpected...
Page 199: Technical Information
Technical Information This section contains dimensions, capacities, and other technical data, plus information on government requirements and how to break-in your ATV. Vehicle Identification ................ Specifications ..................Break-in Guidelines ................Emission Control Systems ..............Oxygenated Fuels ................Technical Information...
Page 200: Vehicle Identification
Vehicle Identification Serial Numbers The VIN and engine serial numbers and key number may be required when ordering replacement parts. You may record these numbers in the Quick Reference section at the rear of this manual. The VIN ( ) is stamped on the front of the frame. FRONT (1) VIN The engine number ( ) is stamped on the upper side of the rear...
Page 201 Vehicle Identification Color Label & Code The color label ( ) is attached to the frame under the seat. Remove the seat (page ) to check the label. The color code is helpful when ordering replacement parts. You may record the color and code in the Quick Reference section at the rear of this manual.
Page 202: Specifications
API service label, SAE 10W-30, JASO T 903 standard MA, Pro Honda GN4 4-stroke oil (USA & Canada) or Honda 4-stroke oil (Canada only), or an equivalent motorcycle oil Technical Information...
Page 203 Specifications Fuel & Lubricants (cont’d) cooling system Pro Honda HP Coolant or an recommendation equivalent high quality ethylene glycol antifreeze containing corrosion protection inhibitors specifically recommended for use in aluminum engines cooling system 1.6 US qt (1.5 ) capacity Capacities...
Page 204 3.857 2.235 1.571 1.178 0.848 reverse 4.831 final drive shaft Chassis & Suspension caster 6.34 …TRX420TM …TRX420FM trail 0.99 in (25.1 mm) …TRX420TM 0.37 in (9.5 mm) …TRX420FM AT24 8-12 MAXXIS M977 tire size, front AT24 10-11 MAXXIS M978 tire size, rear 3.6 psi (25 kPa , 0.25 kgf/cm )
Page 205 Specifications Electrical battery 12 V 12 Ah generator 0.343 kW/5,000 rpm Lights headlight 12 V 30/30 W brake/tail light neutral indicator 12 V 1.7 W reverse indicator 12 V 1.7 W high coolant 12 V 1.7 W temperature indicator PGM-FI indicator 12 V 1.7 W 4WD indicator 12 V 1.7 W...
Page 206: Break-In Guidelines
Break-in Guidelines Help assure your ATV’s future reliability and performance by paying extra attention to how you ride during the first operating day or 15 miles (25 km). During this period, avoid full-throttle starts, rapid acceleration, and constant RPM operation. Technical Information...
Page 207: Emission Control Systems
Emission Control Systems Exhaust Emission Requirements (USA only) The U.S. Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) require that your ATV comply with applicable exhaust emission standards during its useful life, when operated and maintained according to the instructions provided. The Vehicle Emission Control Information Label ( ) is attached on the right side of the frame.
Page 208 Carbon monoxide does not react in the same way, but it is toxic. Honda Motor Co., Ltd. utilizes various systems to reduce carbon monoxide, oxides of nitrogen and hydrocarbons. Exhaust Emission Control System The exhaust emission control system includes a PGM-FI system.
Page 209 Emission Control Systems Problems That May Affect ATV Exhaust Emissions If you are aware of any of the following symptoms, have the vehicle inspected and repaired by your Honda ATV dealer. Symptoms: Hard starting or stalling after starting Rough idle...
Page 210 Emission Control Systems Noise Emission Control System TAMPERING WITH THE NOISE CONTROL SYSTEM IS PROHIBITED: State laws prohibit, or Canadian provincial laws may prohibit the following acts or the causing thereof: ( ) The removal or rendering inoperative by any person, other than for purposes of maintenance, repair or replacement, of any device or element of design incorporated into any new vehicle for the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use;...
Page 211: Oxygenated Fuels
Oxygenated Fuels Some conventional gasolines are being blended with alcohol or an ether compound. These gasolines are collectively referred to as oxygenated fuels. To meet clean air standards, some areas of the United States and Canada use oxygenated fuels to help reduce emissions. If you use an oxygenated fuel, be sure it is unleaded and meets the minimum octane rating requirement.
Page 212 Oxygenated Fuels If you notice any undesirable operating symptoms, try another service station or switch to another brand of gasoline. Fuel system damage or performance problems resulting from the use of an oxygenated fuel containing more than the percentages of oxygenates mentioned above are not covered under warranty.
Page 213: Consumer Information
This section contains information on your warranty and how to get an official Honda service manual. Authorized Manuals ................Warranty Coverage ................Warranty Service ................Contacting Honda ................Your Honda Dealer ................The Honda Rider’s Club (USA only) ..........Consumer Information...
Page 214: Consumer Information
Helm, Inc. (USA only, Canada: See your Honda dealer to order authorized manuals.) Also available but not necessary to service your model is the Honda Common Service Manual which explains theory of operation and basic service information for various systems common to all Honda motorcycles, motor scooters and ATVs.
Page 215 Mail to Helm, Inc. at the address shown on the back of this order form (USA only). Canada: See your Honda dealer to order authorized manuals. Publication Item Description Qty.
Page 216 NOTE: Dealers and Companies please provide dealer or company name, and also the name of the person to whose attention the shipment should be sent. Customer Name Attention Street Address Apartment Number City State Zip Code Daytime Telephone Number Check or money order enclosed payable to Helm Inc. U. S. funds only. Do not send cash. Check here if your billing address is different from the shipping address shown above.
Page 217: Warranty Coverage
There are responsibilities, restrictions, and exclusions which apply to these warranties. Please read the Warranties Booklet given to you by your Honda dealer at the time of purchase. Be sure to keep your Honda owner’s card with your Warranties Booklet (USA only).
Page 218: Warranty Service
If you have questions about warranty coverage or the nature of the repair, it is best to talk to the service manager of your Honda dealer. Sometimes, in spite of the best intentions of all concerned, a misunderstanding may occur.
Page 219: Contacting Honda
That’s why it’s important to work to resolve any differences at the dealership level. If you wish to comment on your experiences with your Honda or with your dealer, please send your comments to the following address (USA only): Motorcycle Division, American Honda Motor Co., Inc., P.O.
Page 220: Your Honda Dealer
Your Honda Dealer Once you purchase your new Honda, get familiar with the organization of your Honda dealer so you can utilize the full range of services available. The service department is there to perform regular maintenance and unexpected repairs. It has the latest available service information from Honda.
Page 221: The Honda Rider's Club (Usa Only)
The Honda Rider’s Club (USA only) One of the best ways to get the most enjoyment from owning and riding your Honda is through the Honda Rider’s Club of America. Your purchase of a new motorcycle, scooter, ATV or PWC from a participating U.S.
Page 222: Table Of Contents
Table of Contents The following presents the contents of each section of your owner’s manual. ATV SAFETY ..................Important Safety Information ............... Safety Labels ..................INSTRUMENTS & CONTROLS ............Operation Component Locations ............Indicators & Gauge ................Fuel Gauge ..................Controls &...
Page 223 Table of Contents BEFORE RIDING ................29 Are You Ready to Ride? ............... Protective Apparel ................Rider Training ................... Age Recommendation ............... No Passengers ................... No Alcohol or Drugs ................. Is Your ATV Ready to Ride? ..............Pre-ride Inspection ................
Page 224 Table of Contents BASIC OPERATION & RIDING ............ . 45 Safe Riding Precautions ................ Off-Road Use Only ................Keep Hands and Feet on Controls ............. Control Speed ..................Use Care on Unfamiliar or Rough Terrain ........Do Not Perform Stunts ..............
Page 225 Table of Contents SERVICING YOUR HONDA ............77 Bef ore You Service Your Honda The Importance of Maintenance ............Maintenance Safety ................Important Safety Precautions ............Maintenance Schedule ................Maintenance Record ................Service Preparations Maintenance Component Locations ............Tool Kit ....................
Page 226 ....................161 Preparing for a Ride ................What to Take to the Riding Area ..........What to Take on the Trail ............. Transporting Your Honda ..............Storing Your Honda ................Preparation for Storage ..............Removal from Storage ..............You & the Environment ..............
Page 227 . 205 Authorized Manuals ................Warranty Coverage ................Warranty Service ................Contacting Honda ................Your Honda Dealer ................The Honda Rider’s Club (USA only) ..........TABLE OF CONTENTS ..............214 INDEX ....................220 QUICK REFERENCE Table of Contents...
Page 228: Index
....................116 housing drain tube ................121 air pressure, gauge ....................91 tire ....................143 American Honda, contacting .............. . 211 apparel, protective ................. 30 appearance care .................. . 157 authorized manuals ................206 battery ....................
Page 229: Index
Index shoe wear ..................139 braking ....................61 break-in guidelines ................198 capacity, fuel ..................95 care, appearance ................. . 157 cargo, loading and operational guidelines ........... . 41 weight limit ..................40 cleaning, appearance care ..............
Page 230 Index emission control systems ..............199 engine, flooded ....................54 guard ....................149 number ................... . 192 ..................... . 97 pinging ....................94 starting ....................52 stop switch ..................20 stopping .................... . 56 won’t start ..................
Page 231 Index fuel, fill cap ....................95 gauge ....................16 oxygenated ..................203 recommendation ................94 refueling ................... . 95 reserve fuel supply ................95 tank capacity ..................95 valve ....................17 fuses ....................
Page 232 Index Honda, contacting ..................211 Rider’s Club ..................213 dealer ....................212 Honda service manual ................ . 206 identification, vehicle ................192 ignition switch ..................18 indicators, high coolant temperature indicator ........13, 15, 180 neutral indicator .................
Page 233 Index labels, safety ................... lamp check ................... . 14 lever, 2WD/4WD select (TRX420FM only) ......... 19 limit, weight ..................40 load limits ....................40 loading guidelines ................. 41 lubrication, differential oil (TRX420FM only) ..........108 engine oil ..................
Page 234 Index neutral indicator ................13, 15 noise emission control system ............. 202 numbers, serial ..................192 obstacles, riding over ................73 oil, differential (TRX420FM only) ............108 engine ....................97 gear case ..................106 operation component locations .............
Page 235 . 125 assist lever ..................125 gear, shifting into ................59 indicator ..................13, 15 riding in .................... . 59 selector knob ..................23 rider training ..................32 Rider’s Club, Honda ................213 (cont’d) Index...
Page 236 Index riding, basic operations ................. 45 clothing ....................30 precautions ..................47 preparing for .................. . 162 over obstacles ..................73 safety ....................safety precautions ................47 through water ..................74 safety, important precautions ...............
Page 237 Index stalling on a hill ..................68 start button .................... . 20 starting, engine ....................52 troubleshooting ................174 stop switch, engine ................20 stopping engine ..................56 storage, ....................166 owner’s manual .................
Page 238 Index throttle, cable ....................123 lever .................. . 22, 122, 123 tires, air pressure ..................143 flat ....................177 replacing ..................148 repairing ..................147 tread conditions ............... 145, 146 tool kit ....................90 trailer hitch ...................
Page 239 Index valve, fuel ....................17 valve clearance ..................129 vehicle indentification no. (VIN) ............192 warning labels ..................warranty, coverage ..................209 extended ..................209 service .................... . 210 washing your ATV ................158 water, riding through ...................
Page 240 Memo...
Page 241: Quick Reference
Quick Reference The following is a brief, but important collection of information you need to know about your Honda. You’ll also find space to record important notes. How To Avoid Costly Repairs The engine of your Honda can be the most expensive component to repair.
Page 242 Quick Reference Engine No. Ignition Key No. Color Label Owner’s Name Address City/State Phone Dealer’s Name Address City/State Phone Service Mgr. Quick Reference...
Page 243 API Service Classification SG or higher except oils labeled as energy conserving on the circular API service label, SAE 10W-30, JASO T 903 standard MA, Pro Honda GN4 4-stroke oil or equivalent 485 lbs (220 kg) Maximum Weight Capacity rider, all cargo and accessories...
Page 244 3.6 psi (25 kPa , 0.25 kgf/cm ) Spark Plugs standard: BKR5E-11 (NGK) K16PR-U11 (DENSO) Coolant ethylene glycol antifreeze (silicate-free) for aluminum engines in 50/50 solution with Pro Honda HP Coolant or an equivalent distilled water main: 30 A Fuses other: 15 A 10 A...

This manual is also suitable for:

Trx420fm 2007 trx420tm 2007 trx420fm 2007 fourtrax rancher 420

Honda TRX420TM Owner's Manual

Instruments & Controls

Before Riding

Basic Operation & Riding

Servicing Your Honda/Bef Ore You Service Your Honda the Importance of Maintenance

Tips

Taking Care of the Unexpected

Technical Information

Consumer Information

Table of Contents

Quick Links

Chapters

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Summary of Contents for Honda TRX420TM

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Table of Contents