Honda HA4120H48A Owner's Manual
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Honda HA4120H48A Owner's Manual

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Owner's Manual
LAWN TRACTOR
HA4118H38A HA4120H48A
©1998 American Honda Motor Co., Inc. — All Rights Reserved

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  • Page 1 Owner's Manual LAWN TRACTOR HA4118H38A HA4120H48A ©1998 American Honda Motor Co., Inc. — All Rights Reserved...
  • Page 2 The information and specifications included in this publication were in effect at the time of approval for printing. Honda Power Equipment Mfg., Inc. reserves the right, however, to discontinue or change specifi- cations or design at any time without notice and without incurring any...
  • Page 3 When your lawn tractor needs scheduled maintenance, keep in mind that your Honda lawn tractor dealer is specially trained in servicing Honda lawn tractors and is supported by the parts and service divisions of American Honda. Your authorized Honda lawn tractor servicing dealer is dedicated to your satisfaction and will be pleased to answer your questions and concerns.
  • Page 4 INTRODUCTION A FEW WORDS ABOUT SAFETY Your safety and the safety of others is very important. And using this lawn tractor 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.
  • Page 5 ............113 Additional information, replacement part numbers, Honda publi- cations available to you, warranty, and how to contact us if you , have a question or a warranty repair problem.
  • Page 6 INTRODUCTION...
  • Page 7 LAWN TRACTOR SAFETY This chapter explains what you need to know to operate your lawn tractor safely..... IMPORTANT SAFETY INFORMATION Avoid Rotating Blades ......Clear Mowing Area....... Keep Shields in Place ......Refuel with Care ........ Wear Protective Clothing ......Turn Engine Off When Not Operating the Lawn Tractor ........

  • Page 8: Important Safety Information

    LAWN TRACTOR SAFETY IMPORTANT SAFETY INFORMATION Most accidents with lawn tractors can be prevented if you follow all instructions in this manual and on the lawn tractor. The most common hazards, according to accident statistics, are discussed below, along with the best way to protect yourself and others. Avoid Rotating Blades A rotating blade can cause serious cuts and even amputate fingers,...

  • Page 9: Refuel With Care

    LAWN TRACTOR SAFETY Refuel with Care Gasoline is extremely flammable, and gasoline vapor can explode. Allow the engine to cool if the lawn tractor has been in operation. Refuel only outdoors in a well-ventilated area with the engine OFF. Never fill the fuel tank beyond the maximum fill mark. Never smoke near gasoline, and keep other flames and sparks away.

  • Page 10: Safety Label Locations

    These labels warn you of potential hazards that can cause serious injury. Read them carefully. If a label comes off or becomes hard to read, contact your Honda lawn tractor dealer for a replacement. Stay away if engine has been running.
  • Page 11 LAWN TRACTOR SAFETY...
  • Page 12 LAWN TRACTOR SAFETY IMPORTANT MESSAGE TO PARENTS YOUR CHILD’S SAFETY IS VERY IMPORTANT to Honda. Read this message if you decide to permit your youngster to operate this lawn tractor. Lawn tractors are tools, not toys. As with any equipment, bad judgments can result in serious injuries.

  • Page 13: Table Of Contents

    CONTROLS This section helps you to identity the lawn tractor controls, what they do, and how they work......CONTROL LOCATIONS....DESCRIPTION OF CONTROLS. Fuel Valve ........Ignition Switch ......... Indicator Lamps ........ Travel Pedals........BrakePedal........Parking Brake........Throttle Lever / Choke ......

  • Page 14: Control Locations

    CONTROLS CONTROL LOCATIONS Use the two illustrations on these pages to locate and identify the most frequently used controls. CHOKE THROlTLE WEL VALVE CUTTING HEIGHT Iunder hood) ADJUSTMENT KNOB...
  • Page 15 CONTROLS INDICATOR LIGHT HEADLIGHT SWITCH REVERSE TRAVEL PEDAL RELEASE PARKING BRAKE...

  • Page 16: Description Of Controls

    CONTROLS DESCRIPTION OF CONTROLS Your lawn tractor uses colors to identify control types. Orange levers and knobs are used to control the movement of the lawn tractor. For example, the parking brake lever and throttle are color coded orange. Yellow controls identify attachment controls, such as the PTO clutch knob, which is used to start and stop the mower deck blades.

  • Page 17: Travel Pedals

    CONTROLS Travel Pedals The travel pedals are used to control the forward and reverse movement of the lawn tractor. The farther the pedal is pushed, the greater the speed. The pedals are linked, so only one pedal may be pressed at one time. FORWARD REVERSE Brake Pedal...

  • Page 18: Parking Brake

    CONTROLS Parking Brake PARKING B/RAKE LEVER This lever, located under the ignition switch, is used to prevent movement of the lawn tractor when parked. The lever can be set or released only when the brake pedal is fully pressed. The parking brake lever should always be set before getting off the lawn tractor.

  • Page 19: Ptoknob

    CONTROLS PTO Knob PTO stands for Power Takeoff. The PTO knob is used to apply power.to the mower deck (or REVERSE IMPLEMENT other attachment). The PTO knob has three positions: OFF, ON and REVERSE IMPLEMENT. ON and OFF are used for normal operation when moving forward.

  • Page 20: Cutting Height Adjustment Knob

    CONTROLS Cutting Height Adjustment Knob Lift lever must be in the TRANSPORT position before turning cutting height knob. Cutting height can be adjusted from approximately 1 - 4 inches (25 - 100 mm). When lift lever is in TRANSPORT position (lift lever all the way back), cutting height is approximately 4 inches (100 mm).
  • Page 21 This chapter explains how to fuel and check your lawn tractor to be sure it is ready, and it tells you how to prepare your lawn and yourself before you begin mowing. CHECK YOUR LAWN ......Objects........2 People and Pets........ Lawn..........2 CHECK YOUR LAWN TRACTOR ....

  • Page 22: Check Your Lawn

    BEFORE OPERATION There are three areas to be checked before using the lawn tractor: Check your lawn Check your lawn tractor Are you ready to mow? These are described in the following sections. CHECK YOUR LAWN For your safety and the safety of others, always inspect the area before mowing.

  • Page 23: Check Your Lawn Tractor

    BEFORE OPERATION CHECK YOUR LAWN TRACTOR For your safety and the service life of your equipment, always inspect your lawn tractor before using it. Before beginning your pre-operation checks, be sure: The lawn tractor is parked on a level surface. The PTO clutch knob is OFF.

  • Page 24: Engine Oil Level

    BEFORE OPERATION Engine Oil Level Raise the engine hood. The oil filler cap is located on the left side of the engine. Clean the area around the oil filler cap, unscrew it, and wipe the dipstick with a clean cloth. Insert the dipstick (don’t screw it back in) and remove it.

  • Page 25: Parking Brake

    The hydrostatic fluid level should be between the 2 marks on the reservoir. If the fluid is below the bottom line, add lOW30 API SE, CC, or CD oil to bring the level to the upper line. Do not use Honda Hydrostatic Fluid in this lawn tractor.

  • Page 26: Fuel

    BEFORE OPERATION Fuel Capacity: 2.5 US gal (9.5 liters) Minimum pump octane rating: 86 Refuel in a well-ventilated area before starting the engine. If the engine has been running, allow it to cool before refueling. Avoid overfilling or spilling fuel. Fuel the lawn tractor with pump octane 86 or higher unleaded fuel.

  • Page 27: Cooling Air Intake Path And Air Filters

    BEFORE OPERATION Cooling Air Intake Path and Air Filters Raise the engine hood, then make sure the cooling air intake screen on the top of the engine is clear of grass and debris and is securely installed. Never operate the lawn tractor without the screen installed.

  • Page 28: Are You Ready To Mow

    BEFORE OPERATION ARE YOU READY TO MOW? Your safety is your responsibility. A little time spent in preparation will significantly reduce your risk. Knowledge Read and understand this manual. Know what the controls do and how to operate them. Familiarize yourself with the lawn tractor and its operation before you begin mowing.
  • Page 29 OPERATION This chapter tells you how to operate the lawn tractor safely and effectively......MOWING PRECAUTIONS STARTING THE ENGINE......Checking Indicator Lamps ........DRIVING THE LAWN TRACTOR. Setting and Releasing the Parking Brake .... Steering........3 Direction of Travel and Ground Speed....Mowing........3 Adjusting Cutting Height.
  • Page 30 OPERATION Cleaning Other Areas ......TOWING ........,Towing Safety ......... Towing Weight Limits ......

  • Page 31: Mowing Precautions

    OPERATION MOWING PRECAUTIONS Before operating the lawn tractor for the first time, please review both the LAWN TRACTOR SAFETY section and the BEFORE OPERATION section. Even if you have operated other lawn tractors, take time to become familiar with how this lawn tractor works, and practice in a safe area until you build up your skills.

  • Page 32: Starting The Engine

    OPERATION STARTING THE ENGINE Start the engine outside in an open area with good ventilation. Locate the fuel valve on the left side of the engine, under the engine hood. Move the fuel valve to ON. Lower the engine hood and sit in the operator’s seat.

  • Page 33: Checking Indicator Lamps

    OPERATION Holding the ignition key in the start position for more than five seconds may damage the starter. If the engine fails to start, wait at least ten seconds before trying again. If you can’t get the engine to start after multiple tries, refer to the TROUBLESHOOTING section on page 99.

  • Page 34: Driving The Lawn Tractor

    OPERATION DRIVING THE LAWN TRACTOR Once your lawn tractor is started, you will need to know how to set and release the parking brake, steer correctly, change the direction of travel, adjust ground speed, begin mowing (including raising and lowering the mower deck and adjusting the cutting height and mower wheels), and you will need to know how to stop your lawn tractor.

  • Page 35: Direction Of Travel And Ground Speed

    OPERATION After using the lawn tractor for a while, you’ll get a better feel for how much effort to use on the steering wheel for a particular turn. The speed of the lawn tractor greatly affects how the steering responds. For this reason, you should use a lower ground speed before entering turns.

  • Page 36: Mowing

    OPERATION MOWING When you are ready to begin mowing, approach the mowing area at a reduced ground speed. Bring the lawn tractor to a full stop, and adjust the cutting height of the mower (see Adjusting Cutting Height). To begin mowing, make sure the throttle is set to FAST, then engage the blades by pulling up on the PTO knob.
  • Page 37 OPERATION 48 Inch Mower Deck Check tractor tire pressure (page 82). Pull out on the J-pin to move the anti- scalp rollers up or down until the wheels are approximately l/4 - l/2 inch (6 - 13 mm) above the mowing surface. Adjust the anti-scalp rollers to match in height or, if desired, adjust the anti- scalp rollers to roll on the ground.

  • Page 38: Stopping The Lawn Tractor

    OPERATION STOPPING THE LAWN TRACTOR Emergency Stop 1. Press the brake pedal all the way down and hold it there. 2. Turn the ignition switch off. Push the PTO clutch knob to OFF. 3. Set the parking brake. Normal Stop 1.

  • Page 39: Safe Mowing Practices

    OPERATION SAFE MOWING PRACTICES For your safety, keep all four wheels on the ground, and be careful to avoid losing control of the lawn tractor. Keep a firm grip on the steering wheel. Be very careful when mowing uneven or rough ground. Do not operate the lawn tractor near embankments, dropoffs or ditches.

  • Page 40: Operation On Slopes

    OPERATION Operation on Slopes Never mow on a sloped surface greater than 10 degrees (17% grade), since this can cause the lawn tractor to tip over. Use a slower speed for better control, and avoid sudden stops or starts when on a sloped surface.

  • Page 41: Obstacles

    OPERATION Starting on a Sloped Surface Improper starting on sloped surfaces can cause the lawn tractor to lose traction and tip over. The lawn tractor can fall on you and cause serious inju- or death. Use the following procedure if you must start the lawn tractor on a sloped surface.

  • Page 42: Gravel And Loose Objects

    OPERATION A worn, cracked, or damaged blade can break, and pieces of the damaged blade can become dangerous projectiles. Thrown objects can cause serious injury. Inspect the blade regularly, and do not operate the lawn tractor with a worn or damaged blade.

  • Page 43: Mowing Tips

    OPERATION MOWING TIPS Here are some tips for getting a quality cut with your lawn tractor. When to Mow A well-groomed lawn requires mowing at short, regular intervals. During the growing season, a lawn may require mowing twice a week. Cutting Height To prevent possible damage to the mower deck, always raise it to the TRANSPORT...

  • Page 44: Cutting Width

    OPERATION Cutting Width overlap in the Allow an adequate amount of cutting path when mowing. Four to six inches is recommended; this is roughly the same width as a front tire. When overlapping in a curve, use a lower speed, and overlap the previous cut by 50%, or about half the width of the mower deck.

  • Page 45: Fallenleaves

    Clear a clogged deck with a stick, not your hands. Mowing Patterns Your Honda lawn tractor will work most efficiently if you use the following mowing patterns as much as possible. Mower deck and equipment design, and the direction in which the blade rotates, cause these mowing patterns to give the best results.

  • Page 46: Trimmingtips

    OPERATION Trimming Tips Turn to the left around trees, bushes, etc. Drive slowly. Avoid hitting trees, bushes, etc. If ground slopes up to a tree or bush, you may have to approach the tree or bush straight-on to avoid scalping. To Avoid Scalping Pay attention to the way you drive.

  • Page 47: After Mowing

    AFTER MOWING Under most conditions, the lawn tractor accumulates clippings, mud, dirt and other debris on the mower deck and other areas. Frequently, such debris contains moisture, which if allowed to remain on the mower frame, mower deck or other metal parts, can form rust. Regular cleaning not only helps prevent such rusting, but also makes the lawn tractor operate better.

  • Page 48: Towing

    OPERATION TOWING An optional rear hitch kit is specifically designed for your lawn tractor. Do not use any other type of hitch on the lawn tractor. Towing Safety When the optional hitch is installed and you use a trailer or other attachment, pay attention to these important points for safe operation.

  • Page 49: Towing Weight Limits

    OPERATION Towing Weight Limits Always adhere to the weight limits when towing a trailer or attachment with the lawn tractor. Maximum Allowable Weight Maximum allowable weight for the trailer or attachment and any items carried by the trailer or attachment: On a flat surface: 500 lb (227 kg) On a grade (10 degrees or less): 200 lb (90 kg)
  • Page 50 OPERATION...
  • Page 51 TRANSPORTING This section explains how to load and transport your lawn tractor safely. BEFORE LOADING ......so LOADING AND UNLOADING.
  • Page 52 TRANSPORTING BEFORE LOADING 1. If your lawn tractor is equipped with an optional grass bag kit, remove the bags, hopper cover, lower and upper chute. 2. If the engine has been running, allow it to cool for at least 15 min- utes before loading the lawn tractor.
  • Page 53 More difficult maintenance tasks should be done by a servicing Honda lawn tractor dealer. This dealer is best equipped and staffed to provide the level of service and safety you and your lawn tractor deserve....
  • Page 54 MAINTENANCE Cleaning or Replacing Mower Deck (secondary) Belt (48 inch mower deck) ........7 5 BLADES ..............Blade Inspection ..... Removing and Installing Mower Blades ......Blade Sharpening ....Left-to-Right Inspection Adjustment TIRES AND WHEELS......Lifting Points ........Removing Mower Deck.

  • Page 55: The Importance Of Maintenance

    Remember that your servicing dealer knows your lawn tractor best and is fully equipped to maintain and repair it. To ensure the best quality and reliability, use only new, genuine Honda parts or their equivalents for repair and replacement. Maintenance,...

  • Page 56: Maintenance Safety

    MAINTENANCE MAINTENANCE SAFETY Some of the most important safety precautions follow. However, we cannot warn you of every conceivable hazard that can arise in performing maintenance. Only you can decide whether or not you should perform a given task. Failure to properly follow maintenance instructions and precautions can cause you to be seriously hurt or...
  • Page 57 MAINTENANCE Read the instructions before you begin, and make sure you have the tools and skills required. To reduce the possibility of fire or explosion, be careful when working around gasoline. Use only a nonflammable solvent, not gasoline, to clean parts. Keep cigarettes, sparks, and flames away from all fuel-related parts.

  • Page 58: Emission Control System

    Carbon monoxide does not react in the same way, but it is toxic. Honda uses lean carburetor settings and other systems to reduce the emissions of carbon monoxide, oxides of nitrogen, and hydrocarbons. The U.S. and California...

  • Page 59: Replacement Parts

    MAINTENANCE Replacement Parts The emission control systems on your new Honda engine were designed, built, and certified to conform with EPA and California emission regulations. We recommend the use of genuine Honda parts whenever you have maintenance done. These original-design replacement parts are manufactured to the same standards as the original parts, so you can be confident of their performance.

  • Page 60: Maintenance Schedule

    ’ Service every IO hours or daily when used in dusty areas 2 Replace paper filter element only 3 These items should only be serviced by an authorized Honda servicing lawn tractor dealer unless you are mechanically proficient and have the proper tools.

  • Page 61: Maintenance Access Points

    MAINTENANCE MAINTENANCE ACCESS POINTS Refer to the illustrations on this page for the locations of specific maintenance items and service points. HYDROSTATIC FLUID RESERVOIR CARBURETOR OIL DIPSTICK I FILLFR LF’=- OIL FILTER MUFFLER I SPARK ARRE L DRAIN BOLT TENSION LEVEh FRONT BRiCKET (mower deck removal) (mower deck removal)

  • Page 62: Seat

    MAINTENANCE SEAT Adjusting the Seat 1. Tip seat forward and loosen two knobs to slide seat assembly for- ward or back to the most comfort- able position. 2. Tighten knobs after adjustment to keep seat in place. ENGINE Engine Hood The engine hood must be raised to perform some maintenance procedures on the lawn...

  • Page 63: Air Cleaner Service

    MAINTENANCE Air Cleaner Service Check that the air cleaner elements are clean and in good condition. A dirty air cleaner will restrict air flow to the engine, reducing performance. A damaged air cleaner will allow dirt to enter the engine, causing rapid engine wear.
  • Page 64 MAINTENANCE Gasoline is highly flammable and explosive. You can be burned or seriously injured. Never use gasoline to clean engine parts. Use a nonflammable solvent. Oil the foam element by dipping it in clean engine oil and squeez- ing out all excess oil. If too much oil is left in the foam, the engine will smoke when you first start it.

  • Page 65: Engineoil

    MAINTENANCE Engine Oil Engine oil capacity: 2.2 US quarts (2.1 liters) with filter change Recommended Oil is a major factor affecting performance and service life. Use a 4- stroke motor oil that meets or exceeds the requirements for API service classification SH, SJ, or equivalent.
  • Page 66 MAINTENANCE Changing the Oil Change the oil at the recommended interval or more frequently under extreme operating conditions. Drain the oil while the engine is warm to assure rapid and complete draining. Raise the engine hood. ’ Clean the area around the oil filler cap and unscrew it.
  • Page 67 Tighten the oil filter to specified torque 22.0 Nom (16 lb-ft, 2.20 kg-m). Use only a Honda genuine oil filter or a filter of equivalent quality specified for your model. Using the wrong filter may cause engine damage. Pour the specified amount of recommended oil into the engine.

  • Page 68: Sparkplugs

    MAINTENANCE Spark Plugs Removal, Inspection and Replacement For good performance, the spark plugs should have the correct gap and be free of deposits. Follow these steps for each spark plug. 1. Remove the spark plug cap. Clean any dirt from around the spark plug base.

  • Page 69: Fuel System

    High altitude performance can be improved by a specific modification to the carburetor. If you always operate your lawn tractor at altitudes above 5,000 feet (1,500 meters) have an authorized Honda lawn tractor dealer perform this carburetor modification.

  • Page 70: Fuel Recommendations

    5,000 feet (1,500 meters) with a modified carburetor may cause the engine to overheat and result in serious engine damage. For use at low altitudes, have an authorized Honda lawn tractor dealer return the carburetor to original factory specification.

  • Page 71: Electrical

    MAINTENANCE ELECTRICAL Battery Service Your lawn tractor charging system charges the battery while the engine is running. However, if the lawn tractor is only used periodically, the battery must be charged monthly to maintain the battery service life. The battery contains sulfuric acid (electrolyte) which is highly corrosive and poisonous.
  • Page 72 MAINTENANCE Inspection 1. Raise the hood. Remove the battery cell caps. 2. Inspect the electrolyte level of each cell. The electrolyte liquid should cover all the plates. 3. If any plates are not covered, add distilled water as necessary. Removal To charge the battery, follow the procedures below.

  • Page 73: Fuse Replacement

    2. Pull defective fuse out of socket. 3. Check metal clip in fuse window. Discard fuse if clip is broken. Make sure to replace fuse of proper amperage. See your Honda dealer or an automotive parts store for fuse replacement.

  • Page 74: Mowerdeck

    MAINTENANCE MOWER DECK Replacing Mower Drive (primary) Belt The primary belt runs from the crankshaft pulley on the engine back to the main pulley on the mower deck. Cleaning and replacing drive belt steps are similar for both 38 inch and 48 inch mowers. See page 114 for replacement part numbers.

  • Page 75: Replacing Mower Deck (Secondary) Belt (38 Inch Mower Deck)

    MAINTENANCE Replacing Mower Deck (secondary) Belt (38 inch mower deck) The secondary belt is the belt on the mower deck only. See page 114 for replacement part numbers. Remove mower deck (page 83). Remove belt guard cover. Disconnect idler spring with a spring removal tool or self- locking pliers.
  • Page 76 MAINTENANCE Cleaning or Replacing Mower Deck (secondary) Belt (48 inch mower deck) See page 114 for replacement part numbers. 1. Remove mower deck. (See the Removing Mower section.) 2. Remove cover (right-hand side) by loosening the cap screws. 3. Remove belt guard cover (left-hand side) by loosening the cap screws.

  • Page 77: Blades

    When the blades need resharpening or replacement, take the lawn tractor to an authorized servicing Honda lawn tractor dealer. Or, if you have a torque wrench, you can remove and install the blades yourself. A worn, cracked, or damaged blade can break and pieces of the blade can become dangerous projectiles.
  • Page 78 MAINTENANCE Inspecting For A Bent Blade Perform this inspection prior to attempting any mower deck leveling adjustments. Wearing heavy gloves, then position the right (discharge) side blade so it is parallel to the front axle. Measure the height of the right side blade at point B and record this mea- surement.

  • Page 79: Removing And Installing Mower Blades

    MAINTENANCE Blade Bolt Tightness Blade bolt tightness should be checked as specified in the MAINTENANCE SCHEDULE section. The blades are sharp, and spin at high speed. A spinning blade can cut you severely and can amputate fingers and toes. Wear protective footwear. Keep your hands and feet away from the mower deck while the engine is running.
  • Page 80 MAINTENANCE Remove bolt, washer, and blade. If a blade is dull, have it sharpened and ,balanced. If a blade is damaged, install a new blade. See page 114 for replacement part numbers. 48 inch mower only: Make sure deflector cups are in place between spindle and blade.

  • Page 81: Blade Sharpening

    Blade Sharpening A dull blade may be sharpened, but a blade that is worn out, bent, cracked, or otherwise damaged must be replaced. Always use a genuine Honda replacement blade or high-quality equivalent. See page 114 for replacement part numbers.

  • Page 82: Left-To-Right Inspection Adjustment

    MAINTENANCE Left-to-Right Inspection Adjustment TRANSPORT Move the lift lever to TRANSPORT. Set the height adjustment knob to the 2” (two inch) position. Set the anti-scalp rollers to their highest position (page 34) Move the lift lever to the LOCKOUT position. 5.

  • Page 83: Mower Deck Lift Lever

    MAINTENANCE Front-to-Rear Inspection and Adjustment Pull the mower deck lift lever all the way back to the TRANSPORT position. Turn the mower deck height adjustment knob to the 2” position. Move the mower deck lift lever forward to the LOCKOUT position. 3.

  • Page 84: Tires And Wheels

    MAINTENANCE TIRES AND WHEELS Tires should be kept at the proper inflation pressure and periodically inspected for tread wear or damage. Keeping the tire treads clean and free of mud and other debris improves traction and steering control. Tire pressure: Front: 10 psi (69 kPa) Rear: 8 psi (55 kPa) Lifting Points...

  • Page 85: Removing Mower Deck

    MAINTENANCE Removing Mower Deck The procedure for removing the mower deck is similar for both’the 38 inch mower deck and the 48 inch mower deck, except for the positioning of the anti-scalp rollers on the 48 inch mower deck. Park the lawn tractor on a level surface. Stop the engine. Engage the parking brake.
  • Page 86 MAINTENANCE 5. Push lift lever all the way forward to LOCKOUT LOCKOUT (lower) position. 6. Disconnect drive belt tension lever from hook bracket by pulling lever out of hole on bracket, then up and toward you to relieve belt tension. 7.
  • Page 87 MAINTENANCE Remove the lift rod attaching assembly from tractor and mower. Pull out on rear attaching J-pins on each side of mower and turn pins to unlocked position to disconnect mower from tractor. It may be necessary to manually lift up on the rear of the mower deck to pull out the J-pins.

  • Page 88: Installing Mower

    MAINTENANCE Installing Mower Refer to the removal steps and illustrations. 1. Put the lift lever in the TRANSPORT position. 2. Push mower under tractor. Turn the height adjustment knob to blank mark on knob. Move the lift lever in the LOCKOUT position. Install the rear mower deck lift brackets to lift arms with the J-pins.

  • Page 89: Lubrication Points

    MAINTENANCE Lubrication Points Lubricate the following,points. Use NGLI #2 Lithium Base EP grease Front wheel spindles (turn steering wheel to distribute grease) Blade spindles 48” DECK (belt covers removed for clarity) 36” DECK (left side shown) Rear anti-scalp rollers (48” deck only) and J-Pins (all decks)

  • Page 90: Transmission

    Do not drain or change hydrostatic transmission fluid. SAE lOW30 engine oil with API classifications of SE, CC, or CD is recommended in the transmission. Do not use Honda Hydrostatic fluid. Checking Hydrostatic Transmission Oil Level 1. Check transmission oil only when the tractor is cold.
  • Page 91 TROUBLESHOOTING This section helps you to identify the problems, their causes and some corrective actions. ENGINE PROBLEMS......go DRIVE PROBLEMS .

  • Page 92: Troubleshooting

    Indicator lamps Possible cause Correction BATTERY Excessive load on See your authorized servicing Honda DISCHARGE lamp charging system, stays on when charging system not lawn tractor dealer. engine is running. working or disconnected, voltage regulator...
  • Page 93 TROUBLESHOOTING Correction Starter operates, Possible cause but engine will not start Check throttle Throttle not in proper Throttle must be in position and choke. position. FAST position, choke ON for a hot start, choke OFF for a cold start. Check fuel delivery Fuel valve is OFF.
  • Page 94 TROUBLESHOOTING Engine has low Possible cause Correction power Check ground Fast ground speed Mow at slower speed. when mowing tall ground speed. grass puts excessive load on engine. Check mower deck Too low mower deck Raise height of height. height for grass puts mower deck.

  • Page 95: Drive Problems

    Brake pedal not fully Make sure brake position. released. pedal is fully released. Check drive belt. Drive belt worn, See servicing Honda broken or not on lawn tractor dealer. pulleys. Check transmission Lever is in the Move lever to the release RELEASED position ENGAGED position.

  • Page 96: Vibration

    TROUBLESHOOTING VIBRATION Lawn tractor Possible cause Correction vibrates Check blades. Blades not in good Inspect blades, and condition. replace if necessary. Check mower deck. Blades obstructed by Clear mower deck of grass, mud, etc. any obstructions. Check blade belt. Blade belt worn or Inspect blade belt, not properly and make sure it is...
  • Page 97 TROUBLESHOOTING Possible cause Correction Poor cut quality Check throttle Blades spinning too Keep throttle in slowly. FAST when mowing. position. Check mower deck. Blades obstructed by Clear mower deck of any obstructions. grass, mud, etc. Lawn tractor moving Reduce travel Check travel speed.
  • Page 98 TROUBLESHOOTING Possible cause Correction Grass not discharging properly Check throttle Blades spinning too Keep throttle in position. FAST when mowing. slowly. Check deck height Deck set too high up. Adjust deck height to adjustment lever. grass conditions. Check blade belt Blade belt worn, not Inspect blade belt and primary belt.
  • Page 99 TROUBLESHOOTING Correction Possible cause Engine stalls when PTO clutch lever is set to ON Check throttle Engine running too Keep throttle in position. slow. FAST when mowing. Clear mower deck of Check mower deck. Blades obstructed by grass, mud, etc. any obstructions.
  • Page 100 TROUBLESHOOTING...
  • Page 101 STORAGE This section explains how to protect your lawn tractor from rust and corrosion, and ensure that it will start easily when you want to use it again...... .I oo STORAGE PREPARATION Cleaning........10 ..lO 2 Fuel ........Engine Oil........I03 Grease........10 Tires.........10...
  • Page 102 STORAGE STORAGE PREPARATION Proper storage preparation is essential for keeping your lawn tractor trouble free and looking good. The following steps will help to keep rust and corrosion from impairing your lawn tractor’s function and appear- ance, and will make the engine easier to start when you use the lawn tractor again.
  • Page 103 STORAGE Grass Bag (optional kit) Remove the grass bags from the hopper frame, and wash them with a garden hose or pressure washing equipment. Allow the bags to completely dry before storage. After washing the lawn tractor, wipe dry all accessible surfaces. Start the engine outdoors, and let it run until it reaches normal operating temperature to evaporate any water remaining on the engine.
  • Page 104 STORAGE Fuel Gasoline will oxidize and deteriorate in storage. Old gasoline will cause hard starting, and it leaves gum deposits that clog the fuel system. If the gasoline in your lawn tractor deteriorates during storage, you may need to have the carburetor and other fuel system components ser- viced or replaced.
  • Page 105 STORAGE Engine Oil 1. Change the engine oil and filter (page 64). 2. Remove the spark plugs (page 66). 3. Pour a tablespoon (5 - 10 cc) of clean engine oil into each cylinder. 4. Operate the electric starter for a few seconds to distribute the oil in the cylinder.
  • Page 106 STORAGE PLACING IN STORAGE If your lawn tractor will be stored with gasoline in the fuel tank and car- buretor, it is important to reduce the hazard of gasoline vapor ignition. Select a well-ventilated storage area away from any appliance that operates with a flame, such as a furnace, water heater, or clothes dryer.
  • Page 107 STORAGE REMOVAL FROM STORAGE BEFORE OPERATION Check your lawn tractor as described in the section. If the fuel was drained during storage preparation, fill the tank with fresh gasoline. If you keep a container of gasoline for refueling, be sure that it contains only fresh gasoline.
  • Page 108 STORAGE...
  • Page 109 SPECIFICATIONS This chapter gives dimensions, capacities, and other technical information. LAWN TRACTOR MODEL..... . .108 DIMENSIONS, WEIGHTS, AND CAPACITIES..I08 ENGINE .

  • Page 110: Lawn Tractor Model

    SPECIFICATIONS LAWN TRACTOR MODEL Hydrostatic transmission, side-discharge, HA41 18H38A American model, 18 HP engine, 38 inch deck HA41 20H48A Hydrostatic transmission, side-discharge, American model, 20 HP engine, 48 inch deck DIMENSIONS, WEIGHTS, AND CAPACITIES Length 68.4 inches (1724 mm) Width 49.7 inches (1262 mm) (38”...

  • Page 111: Engine

    SPECIFICATIONS ENGINE HA41 18H38A HA41 20H48A Model GXV620 Engine GXV610 18 hp/3600 rpm 20 hp/3600 rpm Horsepowerfrpm Maximum No-Load Governed Speed 3,200 +150 rpm 1400 +150 Idle Speed Ignition System Transistorized magneto Valve Clearance (cold): Intake 0.13 - 0.17 mm Exhaust 0.18 - 0.22 mm Spark Plugs...

  • Page 112: Design And Performance

    SPECIFICATIONS TRANSMISSION DESIGN AND PERFORMANCE Type Hydrostatic, fluid drive Infinitely variable Speeds Ground Forward: 0 - 5 mph (0 - 8.0 km/h) Speeds Reverse: 0 - 2.4 mph (0 - 3.8 km/h) Lube API classification 3.6 quarts (3.4 liters) SAE 1 OW-30 SH only MOWER DECK DESIGN AND PERFORMANCE...

  • Page 113: Tuneup

    SPECIFICATIONS MAINTENANCE Fuel Unleaded gasoline with a pump octane rating of 86 or higher Engine Oil SAE lOW-30; API SH, or SJ for general use Spark Plug Type NGK: BPR5ES or ND: WlGEPRU Maximum Governed 3,200 rpm f 150 Engine Speed Blade Bolt Torque 38”...
  • Page 114 SPECIFICATIONS...
  • Page 115 This chapter contains additional information, including replacement part number, serial number locations, Honda publications available to you, and tells you how to contact us if you have a question or warranty repair problem. REPLACEMENT PARTS ......114 HONDA PUBLICATIONS .
  • Page 116 ADDITIONAL INFORMATION REPLACEMENT PARTS Replacement parts may be purchased from an authorized servicing Honda lawn tractor dealer. Mower Deck Parts Description Mower Deck 1 48” Mower Deck ( 38” Belt, blade 76181 -V09-A01 76181 -V09-DO1 Belt, PTO to mower deck...
  • Page 117 HONDA PUBLICATIONS These publications will give you additional information for maintaining and repairing your lawn tractor. You may order them from your Honda lawn tractor dealer. Shop Manual This manual covers complete maintenance and overhaul procedures.
  • Page 118 ADDITIONAL INFORMATION WARRANTY SERVICE INFORMATION Honda Power Equipment dealership personnel are trained profession- als. They should be able to answer any question you may have. If you encounter a problem that your dealer does not solve to your satisfac- tion, please discuss it with the dealership’s management. The Service Manager or General Manager can help.
  • Page 119 When you write or call, please provide the following information: • Model and serial numbers • Name of the dealer who sold the Honda power equipment to you • Name and address of the dealer who services your equipment •...
  • Page 120 ADDITIONAL INFORMATION OXYGENATED FUELS Some conventional gasolines are being blended with alcohol or an ether compound. These gasolines are collectively referred to as oxy- genated 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 121 ADDITIONAL INFORMATION SPARK ARRESTER SERVICE (optional part) The spark arrester is not standard on your lawn tractor, but may be required for legal operation in some areas. A spark arrester must be inspected, cleaned every 100 hours of operation. Park the lawn tractor on a flat, level surface. Set the parking brake ON and remove the ignition key.
  • Page 122 INDEX transmission release lever ..18 air cleaner ........drive problems ......93 air intake screen ......25 driving the lawn tractor ....32 anti-scalp rollers, adjusting ..34 emission control ......56 bagging ........engine battery ........starting charging .......
  • Page 123 INDEX mulching ........lamps checking indicator ....31 ......changing lamps, indicator ......checking level ...... .22 latch, hood ........filter ........leaves .......... lamp ........lift lever .............. .63 recommended lifting points ......... light headlight swtich ....18 parking lights brake ........
  • Page 124 INDEX specifications ......108 transmission release ....18 starting the engine ...... .30 transpdrting ......... stopping the lawn tractor trimming tips ....... emergency ......36 troubleshooting normal ........drive ........storage ........engine ........mower deck ......94 vibration ........ throttle ........
  • Page 125 INDEX...
  • Page 126 Quick Reference Information Unleaded gasoline with a pump =uel octane rating of 88 or higher 2.5 U.S. gallons (9.5 liters) >apacity SAE low-30 API SH or SJ for gen- Engine Oil ‘we eral use 2.2 U.S. quarts (2.1 liters) Zapacity NGK: BPRSES Spark Plug ND: Wl GEPRU...
  • Page 127 POM52882-A 50009903 31V09610 Printed on 00X31-V09-6100 PRINTED IN U.S.A. Recycled Paper...

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