Page 1 READ THIS MANUAL CAREFULLY! It contains important safety information. OWNER’S MANUAL YFM450DE/YFM450DAE YFM450PE/YFM450PHE WARNING This ATV should not be ridden by anyone under 16 years of age. LIT-11626-27-20 2LC-F8199-10...
Page 2 EBU17092 Read this manual carefully before operating this vehicle. This manual should stay with this ve- hicle if it is sold.
Page 3 Congratulations on your purchase of the Yamaha YFM450DE/YFM450DAE/YFM450PE/YFM450PHE. This ATV represents the result of many years of Yamaha experience in the production of fine sporting, tour- ing, and pace-setting racing machines. With the purchase of this Yamaha, you can now appreciate the high degree of craftsmanship and reliability that have made Yamaha a leader in these fields.
Page 4 EBU17330 IMPORTANT MANUAL INFORMATION EBU17342 FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERIOUS IN- JURY OR DEATH. Particularly important information is distinguished in this manual by the following notations: This is the safety alert symbol. It is used to alert you to potential per- sonal injury hazards.
Page 5 Please check your local riding laws and regulations before operating this ATV. EBU17402 YFM450DE/YFM450DAE/ YFM450PE/YFM450PHE OWNER’S MANUAL ©2013 by Yamaha Motor Corporation, U.S.A. 1st edition, February 2013 All rights reserved. Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation, U.S.A.
Page 6: Table Of Contents
Throttle lever ..........4-12 EWB00011 WARNING Speed limiter ..........4-13 Indicates a hazardous situation which, if not Front brake lever ........4-14 avoided, could result in death or serious injury. Brake pedal and rear brake lever .....4-14 Drive select lever ........4-15 Fuel tank cap ..........4-15 Fuel ............4-15 EBU17420 Fuel cock ..........4-17...
Page 7 OPERATION ..........6-1 PERIODIC MAINTENANCE AND Starting a cold engine ........ 6-1 ADJUSTMENT..........8-1 Starting a warm engine ......6-3 Owner’s manual and tool kit .......8-2 Operating the drive select lever and driving Periodic maintenance chart for the in reverse ..........6-3 emission control system ......8-3 Engine break-in ..........
Page 8 ........8-49 Noise regulation ........11-4 Checking and lubricating the brake Maintenance record ........11-5 pedal ............8-49 YAMAHA MOTOR CORPORATION, Checking the wheel hub bearings .... 8-50 U.S.A. ATV LIMITED WARRANTY ..11-6 Lubricating the drive shaft universal YAMAHA EXTENDED SERVICE joint ............
Page 9: Location Of The Warning And Specification Labels
EBU17660 LOCATION OF THE WARNING AND SPECIFICATION LABELS...
Page 10 Read and understand all of the labels on your ATV. These labels contain important information for safe and proper operation. Never remove any labels from your ATV. If a label becomes difficult to read or comes off, request a replace- ment label from your Yamaha dealer. 88 lbs (40 kg) 3.6 psi, (25 kPa) 3.6 psi, (25 kPa)
Page 11 176 lbs (80 kg) 5ND-F4897-30 ( 6 0 0 k g f ) 5880 N 1322 37S-F151K-00...
Page 12 Certification of Compliance This ATV complies with applicable provisions of ANSI/SVIA 1-2010 and is subject to an approved ATV action plan submitted by YAMAHA and on file with the U.S. Consumer Product Safety Commission. YAMAHA MOTOR CORPORATION U.S.A. 6555 Katella Avenue, Cypress, California 90630-5101, U.S.A.
Page 13 WARNING Fuel vapors can be a fire or explosion hazard. To avoid injury or death, never store fuel or flammable liquids in this storage compartment. Storage should not exceed 1 lb (0.5 kg) 37S-F151F-U0...
Page 14: Safety Information
EBU17431 SAFETY INFORMATION ● EBU17487 Never allow a child under age 16 to operate an ATV without adult supervision, and never allow AN ATV IS NOT A TOY AND CAN BE HAZARD- continued use of an ATV by a child if he or she OUS TO OPERATE.
Page 15 ● Always inspect your ATV each time you use it to ● Always follow proper procedures for climbing make sure it is in safe operating condition. Al- hills as described in this manual. Check the ter- ways follow the inspection and maintenance rain carefully before you start up any hill.
Page 16 steady speed when climbing a hill. If you stall or ● Always be sure there are no obstacles or people roll backwards, follow the special procedure for behind you when you operate in reverse. When braking described in this manual. Dismount on it is safe to proceed in reverse, go slowly.
Page 17 In the event of an accident tion. If necessary, contact your riding party or 1. If serious injuries are incurred, you may be local authorities to let them know where you safer staying next to your vehicle; it may are and what has happened. shield you from oncoming riders.
Page 18 This im- While you may find aftermarket products similar in proper position limits the freedom of movement design and quality to genuine Yamaha accesso- of the operator and may limit control ability, ries, recognize that some aftermarket accessories...
Page 19 ● Do not run engine outdoors where engine EWB00072 WARNING exhaust can be drawn into a building through openings such as windows and Avoid Carbon Monoxide Poisoning All engine exhaust contains carbon monoxide, doors. a deadly gas. Breathing carbon monoxide can EWB02591 cause headaches, dizziness, drowsiness, nau- WARNING...
Page 20 FOR MORE INFORMATION ABOUT ATV SAFE- TY, call the Consumer Products Safety Commis- sion at 1-800-638-2772, or the ATV Distributor’s Safety Hotline at 1-800-852-5344.
Page 21: Description
EBU17680 DESCRIPTION EBU17690 EBU17700 Left view Right view 1. Radiator cap 1. Spark arrester 2. Fuel cock 2. Rear storage compartment and tool kit 3. Throttle stop screw 3. Spark plug 4. Air filter case 4. Rear brake light switch 5.
Page 22: Controls And Instruments
EBU17712 Controls and instruments The ATV you have purchased may differ slightly 5 6 7 from the figures shown in this manual. 1. Rear brake lever 2. Handlebar switches 3. Starter (choke) 4. Drive select lever 5. Multi-function display 6. Main switch 7.
Page 23: Instrument And Control Functions
EBU17726 INSTRUMENT AND CONTROL FUNCTIONS EWB00011 WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury. EBU17760 Main switch The positions of the main switch are as follows: All electrical systems are supplied with power. The headlights and taillight come on when the light 1.
Page 24: Indicator Lights And Warning Lights
EBU26695 Indicator lights and warning lights 1. Electric Power Steering warning light “EPS” (for EPS model) 1. On-Command differential gear lock indicator light “DIFF. LOCK” EBU17990 Low-range indicator light “ ” 2. Low-range indicator light “L” This indicator light comes on when the transmis- 3.
Page 25 “ON”. If the warning engine as soon as it is safe to do so and allow it to light does not come on, have a Yamaha dealer cool down for about 10 minutes. check the electrical circuit.
Page 26 ● ● If the engine is stopped using the engine stop Due to the synchronizing mechanism in the dif- switch and the key is in the “ON” position, the ferential gear case, the four-wheel-drive indica- EPS warning light comes on to indicate that the tor may not come on until the ATV starts moving.
Page 27: Multi-Function Display
● an hour meter (which shows the total time the EBU18037 Multi-function display key has been turned to “ON”) Odometer and tripmeter modes Pushing the “TRIP/ODO” button switches the dis- play between the odometer mode “ODO” and the tripmeter modes “TRIP A” and “TRIP B” in the fol- lowing order: ODO →...
Page 28: Fuel Gauge
To set the clock 1. Set the display to the clock mode. If the ATV runs out of fuel, move the fuel cock lever 2. Push the “ / ” button until the clock starts to the “RES” position. Approximately 4.5 L (1.19 flashing.
Page 29 that the starter motor will not operate properly. EBU18080 Engine stop switch “ ” If this should happen, remove the battery and Set this switch to “ ” before starting the engine. recharge it. (See page 8-52.) The engine stop switch controls the ignition and stops the engine when it is running.
Page 30 In drive to four-wheel drive or vice versa while moving may cause the ATV to unexpectedly this case, take the ATV to a Yamaha dealer at the handle differently. This could distract the oper- first opportunity.
Page 31 This ATV is equipped with a switch to change from two-wheel drive to four-wheel drive and vice versa. Select the appropriate drive according to the ter- rain and the conditions. ● “2WD” (two-wheel drive): Power is supplied to the rear wheels. ●...
Page 32 control and have an accident if you cannot EBU18255 On-Command differential gear lock switch make a sharp enough turn for the speed you “4WD”/“LOCK” are traveling. EWB00131 WARNING This ATV is equipped with a switch allowing you to Always stop the ATV before changing from lock the differential gear when in four-wheel drive.
Page 33 1. On-Command four-wheel-drive switch “2WD”/“4WD” 1. Differential gear lock lever 2. On-Command differential gear lock switch “4WD”/“LOCK” 2. On-Command four-wheel-drive switch “2WD”/“4WD” To lock the differential gear in four-wheel drive, Stop the ATV, move the differential gear lock lever make sure the On-Command four-wheel-drive to position (a), and then push the differential gear switch is pushed in to the “4WD”...
Page 34: Throttle Lever
● Riding before the differential gear lock is proper- ly engaged (e.g., when the indicator and indica- tor light are flashing) will cause the vehicle speed to be limited until engagement is com- plete. ● When the ATV is in four-wheel-drive differential gear lock, the maximum traveling speed is limit- ed to 35 km/h (22 mi/h).
Page 35: Speed Limiter
crease the maximum engine power available and the maximum speed of the ATV, turn the adjusting screw in direction (b). Do not turn the adjusting screw out more than 12 mm (0.47 in) or the throttle cable could be dam- aged.
Page 36: Front Brake Lever
3. Tighten the locknut. EBU18391 Front brake lever The front brake lever is located on the right handle- bar. To apply the front brake, pull the brake lever toward the handlebar grip. 1. Brake pedal 1. Front brake lever EBU18442 Brake pedal and rear brake lever The brake pedal is located on the right side of the ATV and the rear brake lever is located on the left...
Page 37: Drive Select Lever
EBU18611 Drive select lever The drive select lever is used to shift your ATV into the low-range, high-range, neutral, reverse and park positions. See the “Operating the drive select lever and driving in reverse” section on page 6-3 for the drive select lever operation. 1.
Page 38 of sparks, open flames, or other sources of ig- Recommended fuel: nition such as the pilot lights of water heaters UNLEADED GASOLINE ONLY and clothes dryers. Fuel tank capacity: 2. Do not overfill the fuel tank. When refueling, 15.0 L (3.96 US gal, 3.30 Imp.gal) be sure to insert the pump nozzle into the fuel Fuel reserve amount: tank filler hole.
Page 39: Fuel Cock
Your Yamaha engine has been designed to use regular unleaded gasoline with a pump octane number [(R+M)/2] of 86 or higher, or a research oc- tane number of 91 or higher.
Page 40: Starter (Choke)
1. Arrow mark pointing to “ON” 1. Arrow mark pointing to “RES” With the fuel cock lever in this position, fuel flows This indicates reserve. With the fuel cock lever in to the carburetor. Turn the fuel cock lever to this this position, the fuel reserve is made available.
Page 41: Seat
Move the starter (choke) in direction (b) to turn off the starter (choke). See the “Starting a cold engine” section on page 6-1 for proper operation. 1. Seat 2. Seat lock lever To install the seat Insert the projections on the front of the seat into 1.
Page 42: Storage Compartments
The front storage compartment is located at the front right side of the ATV. To access the storage compartment, remove the storage compartment cover by turning it counterclockwise. 1. Projection 2. Seat holder EBU29252 Storage compartments 1. Front storage compartment cover This ATV is equipped with two storage compart- ments.
Page 43 When storing any documents in the storage com- partments, be sure to wrap them in a plastic bag so that they will not get wet. When washing the ATV, be careful not to let any water enter the storage compartments. ●...
Page 44: Front Carrier
EBU18962 Front carrier ● Do not exceed the load limit of 40.0 kg (88 lb) for the front carrier. ● Do not exceed the maximum load of 210.0 kg (463 lb) for the ATV. EBU18972 Rear carrier ● Do not exceed the load limit of 80.0 kg (176 lb) for the rear carrier.
Page 45 ● If accessories are used without the engine running or with the headlights turned on, the battery will lose its charge and engine start- ing may become difficult. ● Do not use an automotive cigarette lighter or other accessories with a plug that gets hot because the jack can be damaged.
Page 46: Pre-Operation Checks
Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided in this manual, have the vehicle inspected by a Yamaha dealer. Before using this vehicle, check the following points:...
Page 47 ITEM ROUTINE PAGE • Check operation. If soft or spongy, have Yamaha dealer bleed hy- draulic system. • Check brake pads for wear, and replace if necessary. Front brake 5-3, 8-39, 8-40, 8-41 • Check brake fluid level in reservoir, and add specified brake fluid to specified level if necessary.
Page 48: Fuel
● Check that there is no free play in the front brake Final gear oil lever. If there is free play, have a Yamaha dealer Make sure that the final gear oil is at the specified check the brake system.
Page 49: Throttle Lever
If there is any leakage, the brake proper tire pressure may cause severe injury system should be checked by a Yamaha dealer. or death from loss of control or rollover. Tire pressure below the minimum specified could...
Page 50 Recommended tire pressure: Front 25.0 kPa (0.250 kgf/cm², 3.6 psi) Rear 25.0 kPa (0.250 kgf/cm², 3.6 psi) Minimum tire pressure: Front 22.0 kPa (0.220 kgf/cm², 3.2 psi) Rear 22.0 kPa (0.220 kgf/cm², 3.2 psi) Maximum tire seating pressure: 1. Low-pressure tire gauge Front 250 kPa (2.5 kgf/cm², 36 psi) Tire wear limit...
Page 51: Chassis Fasteners
After extensive tests, only the tires listed below EBU19840 have been approved for this model by Yamaha Chassis fasteners Motor Manufacturing Corporation of America. Make sure that all nuts, bolts and screws are prop-...
Page 52: Instruments, Lights And Switches
EBU19850 Instruments, lights and switches Check that all instruments, lights and switches are working properly. Correct if necessary.
Page 53: Operation
The corresponding indicator EBU19901 light should come on, if it does not come on, have a Yamaha dealer check the electrical cir- Read the Owner’s Manual carefully before riding cuit. the ATV. If there is a control or function you do not understand, ask your Yamaha dealer.
Page 54 Position (2): Cold engine start with ambient temperature If the engine fails to start, release the start switch, between 0 °C (30 °F) and 30 °C (90 °F). then push it again. Pause a few seconds before Position (3): the next attempt. Each cranking should be as short Cold engine start with ambient temperature as possible to preserve battery energy.
Page 55: Starting A Warm Engine
EBU20291 Starting a warm engine Follow the same procedure as for starting a cold engine, with the exception that the starter (choke) is not required when the engine is warm. Instead, start the engine with the throttle slightly open. EBU20441 Operating the drive select lever and driving in reverse ECB00170...
Page 56 ● When in reverse, the reverse indicator light should come on. If the indicator light does not come on, have a Yamaha dealer check the elec- trical circuit. ● Due to the synchronizing mechanism in the en- gine, the indicator light may not come on until the ATV starts moving.
Page 57: Engine Break-In
There is never a more important period in the life of engine break-in period, immediately have a your engine than the first 320 km (200 mi) or 20 Yamaha dealer check the ATV. hours of riding. For this reason, you should read the following material carefully.
Page 58: Parking On A Slope
4. Turn the fuel cock to “OFF”. nection to Yamaha manufacture parts and acces- sories or offer other modifications for Yamaha vehicles. Yamaha is not in a position to test the products that these aftermarket companies pro- duce. Therefore, Yamaha can neither endorse nor...
Page 59 Yamaha or modifications not specifically recom- bulky object attached to the handlebars which mended by Yamaha, even if sold and installed by could make steering difficult, an accessory that a Yamaha dealer. limits your ability to move around on the seat, or one that limits your view.
Page 60 ● Never exceed the weight limits shown. An over- just the load in the trailer, if necessary, to reduce loaded ATV can be unstable. the weight on the hitch. If you are carrying cargo and towing a trailer, include the tongue weight in MAXIMUM LOADING LIMIT the maximum ATV load limit.
Page 61 EWB00011 WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
Page 62: Riding Your Atv
EBU21132 RIDING YOUR ATV...
Page 63: Getting To Know Your Atv
Beginning and inexperienced operators should have read this Owner’s Manual completely and un- complete the certified training course offered by derstand the operation of the controls. Pay partic- Yamaha. They should then regularly practice the skills learned in the course and the operating tech-...
Page 64 niques described in this Owner’s Manual. For more information about the training course, contact an authorized ATV dealer or call 1-800-887-2887. Riding your ATV requires skills acquired through practice over a period of time. Do not attempt to operate at maximum perfor- mance until you are totally familiar with the ATV’s handling and performance characteristics.
Page 65 Apparel Always wear the following to reduce risk of injury in an accident: ● Approved motorcycle helmet that fits properly ● Eye protection (goggles, helmet face shield, or protective eyewear) ● Over-the-ankle boots, gloves, long-sleeved shirt or jacket, and long pants An approved helmet and other personal protective equipment can reduce the severity of injuries in an accident.
Page 66 1. Protective clothing Pre-operation checks 2. Goggles Always inspect your ATV each time you use it to 3. Gloves make sure the ATV is in safe operating condition. 4. Boots 5. Helmet Perform the pre-operation checks listed on page 5-1. Always follow the inspection and maintenance Do not operate after or while consuming alco- procedures and schedules described in the Own- hol or drugs.
Page 67 opening, even when the throttle lever is pushed to ● Do not exceed the maximum loading limits the maximum. Turning in the adjusting screw limits for the vehicle (see “MAXIMUM LOADING the maximum engine power available and de- LIMIT” in this section or vehicle labeling). ●...
Page 68 During operation MAXIMUM LOADING LIMIT Always keep your feet on the footboards during op- ATV loading limit (total weight of cargo, rider, eration; otherwise, they may contact the rear accessories, and tongue): wheels. WARNING! Removing even one hand 210.0 kg (463 lb) or foot can reduce your ability to control the Front carrier: ATV or could cause you to lose your balance...
Page 69 ATV should be during operation or after leaving the ATV, do not let genuine Yamaha or equivalent components de- brush, grass and other materials collect under the signed for use on this ATV and should be installed vehicle, near the muffler or exhaust pipe, or next to and used according to instructions.
Page 70: Be Careful Where You Ride
To prevent burns, avoid touching the exhaust sys- BE CAREFUL WHERE YOU RIDE tem. Park the ATV in a place where pedestrians or This ATV is designed for off-road use only. children are not likely to touch it. WARNING! Paved surfaces may seriously af- fect handling and control of the ATV, and may cause the ATV to go out of control.
Page 71 WARNING! Never operate this ATV on any pub- lic street, road or highway, even a dirt or gravel one. You could collide with another vehicle. [EWB01031] Do not operate on rough, slippery, or loose terrain Know the terrain where you ride. Ride cautiously in until you have learned and practiced the skills nec- unfamiliar areas.
Page 72 When riding in an area where you might not easily Do not ride in areas posted “no trespassing”. be seen, such as desert terrain, mount a caution Do not ride on private property without getting per- flag on the ATV. DO NOT use the flag pole bracket mission.
Page 73: Turning Your Atv
Select a large, flat area off-road to become familiar ECB00251 NOTICE with your ATV. Make sure that this area is free of obstacles and other riders. You should practice Do not shift from low-range to high-range or control of the throttle, brakes, shifting procedures, vice versa without coming to a complete stop.
Page 74: Climbing Uphill
As you approach a curve, slow down and begin to may continue to go straight. If the ATV doesn’t turn the handlebars in the desired direction. As you turn, come to a stop and then practice the proce- do so, put your weight on the footboard to the out- dure again.
Page 75 ● Never operate the ATV on hills too steep for the ATV or for your abilities. The ATV can overturn more easily on extremely steep hills than on level surfaces or small hills. ● Always check the terrain carefully before you start up any hill.
Page 76 Do not attempt to climb hills until you have mas- If you are climbing a hill and you find that you have tered basic maneuvers on flat ground. Always not properly judged your ability to make it to the check the terrain carefully before attempting any top, you should turn the ATV around while you still hill.
Page 77: Riding Downhill
remount, following the procedure described in the ● Always check the terrain carefully before Owner’s Manual. WARNING! Stalling, rolling you start down any hill. backwards or improperly dismounting while ● Never operate the ATV on hills too steep for climbing a hill could result in ATV overturning. the ATV or for your abilities.
Page 78: Crossing A Slope
Use caution while descending a hill with loose or slippery surfaces. Braking ability and traction may be adversely affected by these surfaces. Improper braking may also cause a loss of traction. When this ATV is in “4WD”, all wheels (front and rear) are interconnected by the drive train.
Page 79: Crossing Through Shallow Water
● Shift your weight to the uphill side of the ATV. ● Never attempt to turn the ATV around on any hill until you have mastered the turning tech- nique as described in the Owner’s Manual on level ground. Be very careful when turning on any hill.
Page 80 The ATV can be used to cross slow moving, shal- ability. WARNING! Wet brakes may have re- low water of up to a maximum of 35 cm (14 in) in duced stopping ability, which could cause loss depth. Before entering the water, choose your path of control.
Page 81 1. Air filter case check hose 1. Storage compartment check hose 1. V-belt case drain plug 1. V-belt cooling duct check hose (left front side of ATV) 7-20...
Page 82: Riding Over Rough Terrain
cident. Be sure to keep your feet firmly mounted on the footboards at all times. Avoid jumping the ATV as loss of control and damage to the ATV may re- sult. SLIDING AND SKIDDING EWB01662 WARNING Skidding or sliding improperly may cause you to lose control of this ATV.
Page 83: What To Do If
If the rear wheels of your ATV start to slide side- ways, control can usually be regained (if there is With practice, over a period of time, skill at con- room to do so) by steering in the direction of the trolled sliding can be developed.
Page 84: What To Do
WHAT TO DO... ● If your ATV is traversing a sloping surface: ● If your ATV doesn’t turn when you want it to: Be sure to ride with your weight positioned to- Bring the ATV to a stop and practice the turning wards the uphill side of the ATV to maintain maneuvers again.
Page 85: Periodic Maintenance And Adjustment
The intervals given in the periodic maintenance vice or while using the vehicle. If you are not fa- charts should be considered as a general guide miliar with vehicle service, have a Yamaha under normal riding conditions. However, DE- dealer perform the service.
Page 86: Owner's Manual And Tool Kit
Put the owner’s tool kit and low-pres- If you do not have the tools or experience required sure tire gauge under the seat. for a particular job, have a Yamaha dealer perform it for you. 1. Owner’s manual 2.
Page 87: Periodic Maintenance Chart For The Emission Control System
However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance intervals should be followed. ● Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills. INITIAL...
Page 88 INITIAL EVERY month Whichev- CHECK OR MAINTENANCE ITEM er comes 1300 2500 2500 5000 first (mi) (200) (800) (1600) (1600) (3200) hours • Check for leakage and replace gasket(s) if neces- sary. √ √ √ Exhaust system • Check for looseness and tighten all screw clamps and joints if necessary.
Page 89: General Maintenance And Lubrication Chart
However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance intervals should be followed. ● Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills. INITIAL...
Page 90 INITIAL EVERY month Whichev- CHECK OR MAINTENANCE ITEM er comes 1300 2500 2500 5000 first (mi) (200) (800) (1600) (1600) (3200) hours • Check for cracks or other damage, and replace if √ √ √ √ necessary. Brake hoses • Replace. Every 4 years Brake fluid •...
Page 91 INITIAL EVERY month Whichev- CHECK OR MAINTENANCE ITEM er comes 1300 2500 2500 5000 first (mi) (200) (800) (1600) (1600) (3200) hours • Check for cracks or other damage, and replace if √ √ √ 13 * Stabilizer bushes necessary. √...
Page 92 INITIAL EVERY month Whichev- CHECK OR MAINTENANCE ITEM er comes 1300 2500 2500 5000 first (mi) (200) (800) (1600) (1600) (3200) hours • Change. √ √ √ √ Final gear oil • Check ATV for oil leakage, and correct if neces- sary.
Page 93 EBU28391 ● Some maintenance items need more frequent service if you are riding in unusually wet, dusty, sandy or muddy areas, or at full-throttle. ● Hydraulic brake service • Regularly check and, if necessary, correct the brake fluid level. • Every two years replace the internal components of the brake master cylinder and calipers, and change the brake fluid.
Page 94: Removing And Installing Panels
EWB00011 WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury. EBU23090 Removing and installing panels The panels shown need to be removed to perform some of the maintenance jobs described in this chapter. Refer to this section each time a panel needs to be removed and installed.
Page 95 2. Install the seat. To install a panel 1. Place the panel in its original position. 8-11...
Page 96 Panel B To remove the panel 1. Remove the carrier top bolts. 1. Carrier bolt (under the fenders) 3. Remove the quick fastener screws, and then pull the panel upward to remove it. 1. Carrier bolt (top) 2. Remove the carrier bolts under the fenders, and then take the carrier off.
Page 97 Tightening torques: Carrier bolt (top): 34 Nm (3.4 m·kgf, 25 ft·lbf) Carrier bolt (under fenders): 7 Nm (0.7 m·kgf, 5.1 ft·lbf) Panel D To remove the panel Remove the bolts, and then take the panel off. 1. Quick fastener screw 2.
Page 98: Checking The Spark Plug
To install the panel Place the panel in the original position and install the bolts. Panel E To remove the panel Pull outward on the areas shown. EBU23223 Checking the spark plug The spark plug is an important engine component, which is easy to check.
Page 99 (the ideal color when the ATV is ridden normally). If the spark plug shows a distinctly different color, the engine could be operating improperly. Do not attempt to diagnose such problems yourself. In- stead, have a Yamaha dealer check the ATV. 8-15...
Page 100 2. Check the spark plug for electrode erosion To install the spark plug and excessive carbon or other deposits, and 1. Clean the surface of the spark plug gasket replace it if necessary. and its mating surface, and then wipe off any grime from the spark plug threads.
Page 101: Engine Oil And Oil Filter Cartridge
EBU30240 Engine oil and oil filter cartridge The engine oil level should be checked before each ride. In addition, the oil must be changed and the oil filter cartridge replaced at the intervals spec- ified in the periodic maintenance and lubrication chart.
Page 102 To change the engine oil (with or without oil fil- ter cartridge replacement) 1. Place the ATV on a level surface. 2. Remove panel E. (See page 8-10.) 3. Start the engine, warm it up for several min- utes, and then turn it off. 4.
Page 103 7. Remove the oil filter cartridge with an oil filter wrench. 1. Oil filter wrench An oil filter wrench is available at a nearby Yamaha dealer. 8. Apply a thin coat of engine oil to the O-ring of the new oil filter cartridge.
Page 104 1. O-ring 1. Torque wrench Tightening torque: Oil filter cartridge: Make sure that the O-ring is properly seated. 17 Nm (1.7 m·kgf, 12 ft·lbf) 9. Install the new oil filter cartridge with an oil fil- 10. Install panels D and C. ter wrench, and then tighten it to the specified 11.
Page 105: Final Gear Oil
The final gear case must be checked for oil leak- engine and exhaust system have cooled down. age before each ride. If any leakage is found, have a Yamaha dealer check and repair the ATV. In ad- ECB00300 dition, the final gear oil level must be checked and...
Page 106 To change the final gear oil 1. Place the ATV on a level surface. 2. Remove the engine guard and the final gear case guard by removing the bolts. 1. Final gear oil filler bolt 2. Gasket 3. Final gear oil 4.
Page 107 1. Final gear oil drain bolt 1. Final gear oil filler bolt 2. Gasket 2. Gasket 3. Final gear oil 5. Install the drain bolt and its new gasket, and 4. Correct oil level then tighten the bolt to the specified torque. Recommended final gear oil: Tightening torque: See page 10-1.
Page 108: Differential Gear Oil
The differential gear case must be checked for oil 3. Differential gear oil leakage before each ride. If any leakage is found, 4. Correct oil level have a Yamaha dealer check and repair the ATV. In addition, the differential gear oil level must be 8-24...
Page 109 3. If the oil is below the brim of the filler hole, add sufficient oil of the recommended type to raise it to the correct level. 4. Check the gasket for damage, and replace it if necessary. 5. Install the oil filler bolt and its gasket, and then tighten the bolt to the specified torque.
Page 110: Coolant
8. Check the differential gear case for oil leak- age. If oil is leaking, check for the cause. EBU23470 Coolant The coolant level should be checked before each ride. In addition, the coolant must be changed at the intervals specified in the periodic maintenance and lubrication chart.
Page 111 If water has been added to the coolant, have a Yamaha dealer check the antifreeze con- tent of the coolant as soon as possible, otherwise the effectiveness of the coolant will be reduced. [ECB01011] 1. Maximum level mark 2.
Page 112 ● The radiator fan is automatically switched on or off according to the coolant temperature in the radiator. ● If the engine overheats, see page 8-65 for fur- ther instructions. EBU23605 To change the coolant EWB01890 WARNING 1. Coolant drain bolt Wait for the engine and radiator to cool before 2.
Page 113 4. Remove the front carrier and panel B. (See page 8-10.) 5. Remove the radiator cap. 1. Coolant reservoir hose 9. After draining the coolant, thoroughly flush the cooling system with clean tap water. 1. Radiator cap 10. Install the coolant drain bolt and its new gas- ket, and then tighten the bolt to the specified 6.
Page 114: Cleaning The Air Filter Element
Do not use hard water or salt water since they are If any leakage is found, have a Yamaha dealer harmful to the engine. [ECB00991] check the cooling system.
Page 115 1. Air filter case check hose 1. Air filter case cover holder 2. Air filter case cover 1. Place the ATV on a level surface. 4. Pull the air filter element out of the air filter 2. Remove the seat. (See page 4-19.) case.
Page 116 1. Air filter element 1. Air filter element frame 2. Sponge material 5. Pull off the air filter element lock plate, and 3. Air filter element lock plate then remove the sponge material from the air 6. Wash the sponge material gently but thor- filter element frame.
Page 117: Cleaning The Spark Arrester
40 hours. It should be cleaned and lubricated more damaged. often if the ATV is operated in extremely dusty ar- 9. Apply Yamaha foam air filter oil or other qual- eas. Each time the air filter element maintenance ity foam air filter oil to the sponge material.
Page 118 1. Tailpipe bolt 1. Tailpipe 2. Tailpipe 2. Spark arrester 2. Remove the tailpipe by pulling it out of the 4. Insert the tailpipe into the muffler and align the muffler. bolt holes. 3. Tap the tailpipe lightly, and then use a wire 5.
Page 119: V-Belt Cooling Duct Check Hose
Always let the exhaust system cool prior to If water drains from the V-belt case after removing touching exhaust components. the plug, have a Yamaha dealer check the ATV as the water may affect other engine parts. EBU23920 V-belt cooling duct check hose If dust or water collects in the V-belt cooling duct check hose, remove the hose and clean it.
Page 120: Adjusting The Carburetor
The engine is warm when it quickly responds to the throttle. Yamaha dealer, who has the necessary profes- sional knowledge and experience. The adjustment 2. Remove panel C. (See page 8-10.) described in the following section, however, may 3.
Page 121: Adjusting The Throttle Lever Free Play
If the specified idling speed cannot be obtained as rection (a). To decrease the throttle lever free described above, have a Yamaha dealer make the play, turn the adjusting bolt in direction (b). adjustment.
Page 122: Valve Clearance
The valve clearance changes with use, resulting in improper air-fuel mixture and/or engine noise. To prevent this from occurring, the valve clearance must be adjusted by a Yamaha dealer at the inter- vals specified in the periodic maintenance and lu- brication chart.
Page 123: Checking The Front Brake Pads And Rear Brake Friction Plates
(See page 8-61.) sure the lining thickness. If a brake pad is dam- aged or if the lining thickness is less than 1.0 mm (0.04 in), have a Yamaha dealer replace the brake EBU30320 Rear brake friction plates pads as a set.
Page 124: Checking The Brake Fluid Level
● Insufficient brake fluid may allow air to enter EBU29841 Checking the brake fluid level the brake system, reducing braking perfor- Before riding, check that the brake fluid is above mance. the minimum level mark. Check the brake fluid lev- ●...
Page 125: Changing The Brake Fluid
If the brake fluid level goes down suddenly, have a Yamaha dealer check the cause before fur- ther riding. EBU24281 Changing the brake fluid Have a Yamaha dealer change the brake fluid at the intervals specified in the TIP after the periodic maintenance and lubrication chart.
Page 126 1. Brake lever free play 1. Locknut 2. Distance A 1. Loosen the locknut at the brake lever. 3. Brake lever free play adjusting bolt 2. To increase the brake lever free play, turn the brake lever free play adjusting bolt in direction (a).
Page 127 22 mm (0.87 in), adjust the brake lever free play at the brake lever again. If distance A 3. Fully turn the adjusting bolt in direction (a) to exceeds 12.7 mm (0.50 in), have a Yamaha loosen the brake cable. dealer check the vehicle.
Page 128 1. Distance between brake pedal and footboard bracket 1. Footboard 2. Bolt and nut 1. Remove the footboard by removing the bolts 3. Bolt and nuts. 2. Loosen the locknut. 8-44...
Page 129 1. Locknut 1. Footboard bolt A 2. Adjusting bolt 2. Footboard bolt B 3. Turn the adjusting bolt in or out until the brake pedal height is within the specified limits. Tighten the footboard bolts in the order shown. 4. Tighten the locknut. Tightening torque: Locknut: 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Page 130 The brake lever free play and brake pedal height must be adjusted before adjusting the brake pedal free play. Tightening torques: Footboard bolt A: 4.0 Nm (0.40 m·kgf, 2.9 ft·lbf) Footboard bolt B: 7 Nm (0.7 m·kgf, 5.1 ft·lbf) 1. Brake pedal free play 1.
Page 131: Axle Boots
The axle boots must be checked for damage at the intervals specified in the periodic maintenance and lubrication chart. Check the axle boots for tears or 1. Rear axle boot (each side) damage. If any damage is found, have them re- placed by a Yamaha dealer. 8-47...
Page 132: Brake Light Switches
If a cable is damaged or does not move be adjusted as follows, but the other brake light smoothly, have a Yamaha dealer check or replace switches should be adjusted by a Yamaha dealer. Turn the rear brake light switch adjusting nut while Recommended lubricant: holding the brake light switch in place.
Page 133: Checking And Lubricating The Front And Rear Brake Levers
Rear brake lever EBU28711 Checking and lubricating the front and rear brake levers The operation of the front and rear brake levers should be checked before each ride, and the lever pivots should be lubricated if necessary. Recommended lubricants: Front brake lever: Silicone grease Rear brake lever: Lithium-soap-based grease...
Page 134: Checking The Wheel Hub Bearings
If there is play and lubrication chart. in a wheel hub or if a wheel does not turn smoothly, have a Yamaha dealer check the wheel hub bear- ings. For parts equipped with a grease nipple, use a grease gun.
Page 135: Checking The Stabilizer Bushes
Checking the stabilizer bushes The stabilizer bushes must be checked for cracks or damage at the intervals specified in the periodic maintenance and lubrication chart. Have a Yamaha dealer replace the stabilizer bush- es if necessary. 1. Grease nipple Rear...
Page 136: Lubricating The Steering Shaft
Avoid contact with skin, Lubricating the steering shaft eyes or clothing. Always shield your eyes The steering shaft must be lubricated by a Yamaha when working near batteries. dealer at the intervals specified in the periodic Antidote: maintenance and lubrication chart.
Page 137 1. Remove the seat. (See page 4-19.) To charge the battery 2. Remove the battery holding plate by removing Have a Yamaha dealer charge the battery as soon the bolts. as possible if it seems to have discharged. Keep in 3.
Page 138 2. Connect the positive battery lead first, then ECB00931 NOTICE connect the negative battery lead by installing their bolt. NOTICE: When installing the bat- To charge a VRLA (Valve Regulated Lead Acid) battery, a special (constant-voltage) battery tery, the main switch must be off, and the charger is required.
Page 139: Replacing A Fuse
EBU30800 Replacing a fuse The main fuse, the EPS fuse, and the fuse box are 1 2 3 4 5 6 located under the seat. (See page 4-19.) For non-EPS models 1. Headlight fuse 2. Ignition fuse 3. Auxiliary DC jack fuse 4.
Page 140 For EPS models 1 2 3 4 5 6 1. Headlight fuse 1. Main fuse 2. Signaling system fuse 2. Fuse box 3. Ignition fuse 3. EPS fuse 4. Four-wheel-drive motor fuse 4. Spare main fuse 5. Backup fuse (for clock) 6.
Page 141 YFM450PE 40.0 A YFM450PHE 40.0 A 3. Turn the key to “ON” and turn on the electrical circuits to check if the devices operate. 4. If the fuse immediately blows again, have a Yamaha dealer check the electrical system. 8-57...
Page 142: Replacing A Headlight Bulb
EBU25481 Replacing a headlight bulb If a headlight bulb burns out, replace it as follows. 1. Remove the cover at the rear of the headlight by pulling it off. 1. Headlight bulb holder cover 3. Remove the headlight bulb holder by pushing it in and turning it counterclockwise.
Page 143: Adjusting A Headlight Beam
ECB00690 moistened with alcohol or thinner. [ECB00651] NOTICE It is advisable to have a Yamaha dealer make this adjustment. To raise a headlight beam, turn the headlight beam adjusting screw in direction (a). To lower a headlight beam, turn the adjusting screw in direction (b).
Page 144: Replacing The Tail/Brake Light Bulb
1. Headlight beam adjusting screw 1. Tail/brake light assembly 2. Nut EBU25622 2. Remove the tail/brake light bulb holder (to- Replacing the tail/brake light bulb gether with the bulb) by turning it counter- If the tail/brake light bulb burns out, replace it as clockwise.
Page 145: Removing A Wheel
1. Tail/brake light assembly 1. Tail/brake light bulb holder 2. Tail/brake light bulb holder 2. Tail/brake light bulb 3. Remove the burnt-out bulb by pushing it in 4. Insert a new bulb into the bulb holder, push it and turning it counterclockwise. in, and then turn it clockwise until it stops.
Page 146: Installing A Wheel
● Tapered nuts are used for both the front and rear wheels. Install the nuts with their tapered side to- wards the wheel. 1. Wheel nut 3. Elevate the ATV and place a suitable stand under the frame. 4. Remove the nuts from the wheel. 1.
Page 147: Troubleshooting
The following troubleshooting charts represent quick and easy procedures for checking these vital systems yourself. However, should your ATV re- quire any repair, take it to a Yamaha dealer, whose skilled technicians have the necessary tools, expe- 1. Tapered nut rience, and know-how to service the ATV properly.
Page 148: Troubleshooting Charts
Have a Yamaha dealer check the ATV. Check the compression. 4. Compression There is compression. The engine does not start. Have a Yamaha dealer check the ATV. Operate the electric starter. Have a Yamaha dealer check the ATV. There is no compression.
Page 149 Start the engine. If the engine overheats again, have a The coolant level Yamaha dealer check and repair the cooling system. is OK. If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the rec- ommended coolant as soon as possible.
Page 150: Cleaning And Storage
EBU25860 CLEANING AND STORAGE tion of wheel bearings, brakes, transmis- EBU25881 Cleaning sion seals and electrical devices. Many Frequent, thorough cleaning of your ATV will not expensive repair bills have resulted from only enhance its appearance but will improve its improper high-pressure detergent applica- general performance and extend the useful life of tions such as those available in coin-oper-...
Page 151: Storage
EBU25933 Specified amount: Storage 7.5 ml of stabilizer to each liter of fuel (or 1 oz of stabilizer to each gallon of fuel) Short-term Always store your ATV in a cool, dry place and, if 5. Perform the following steps to protect the cyl- necessary, protect it against dust with a porous inder, piston rings, etc.
Page 152 ly, turn the wheels a little every month in order to prevent the tires from becoming degraded in one spot. 8. Cover the muffler outlet with a plastic bag to prevent moisture from entering it. 9. Remove the battery and fully charge it. Store it in a cool, dry place and charge it once a month.
Page 153: Specifications
3000 mm (118 in) Weight: 130 ˚F With oil and fuel: YFM450DAE 275.0 kg (606 lb) SAE 5W-30 YFM450DE 275.0 kg (606 lb) SAE 10W-30 YFM450PE 281.0 kg (619 lb) YFM450PHE 281.0 kg (619 lb) SAE 10W-40 Engine: SAE 15W-40...
Page 154 2.40 L (2.54 US qt, 2.11 Imp.qt) BSR33 x 1 Final gear oil: Spark plug (s): Type: Manufacturer/model: Yamaha Friction Modified Shaft Drive Gear Oil (Part No.: NGK/DR8EA ACC-SHAFT-LU-00) Spark plug gap: Quantity: 0.6–0.7 mm (0.024–0.028 in) 0.38 L (0.40 US qt, 0.33 Imp.qt)
Page 155 High range: Rear: 38/23 (1.652) 25.0 kPa (0.250 kgf/cm², 3.6 psi) Chassis: Minimum: Front: Frame type: 22.0 kPa (0.220 kgf/cm², 3.2 psi) Steel tube frame Rear: Caster angle: 22.0 kPa (0.220 kgf/cm², 3.2 psi) 2.5 ° Front wheel: Trail: 8.5 mm (0.33 in) Wheel type: Front tire: Panel wheel...
Page 156 Front suspension: Tail/brake light: 12 V, 5.0/21.0 W × 1 Type: Meter lighting: Double wishbone EL (Electroluminescent) Spring/shock absorber type: Neutral indicator light: Coil spring/oil damper Wheel travel: Reverse indicator light: 160 mm (6.3 in) Rear suspension: Coolant temperature warning light: Type: Double wishbone Park indicator light:...
Page 157 Signaling system fuse: 10.0 A Ignition fuse: 10.0 A Auxiliary DC jack fuse: 10.0 A Backup fuse: YFM450DAE 10.0 A YFM450DE 10.0 A YFM450PE 5.0 A YFM450PHE 5.0 A Four-wheel-drive motor fuse: 10.0 A 10-5...
Page 158: Consumer Information
Yamaha dealer or for ref- erence in case the ATV is stolen. KEY IDENTIFICATION NUMBER: VEHICLE IDENTIFICATION NUMBER: 1.
Page 159 Model label ment Canada. The model label is affixed at the location in the il- lustration. Record the information on this label in the space provided. This information will be need- ed when ordering spare parts from a Yamaha deal- 11-2...
Page 160 1. Vehicle Emission Control Information label 11-3...
Page 161: Noise Regulation
EBU26060 Noise regulation TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED: Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering inoperative by any person other than for purposes of maintenance, repair, or replacement of any device or element of de- sign incorporated into any new vehicle for the purpose of noise control prior to its sale or delivery to the ul- timate purchaser or while it is in use or (2) the use of the vehicle after such device or element of design has been removed or rendered inoperative by any person.
Page 162: Maintenance Record
EBU26080 Maintenance record Copies of work orders and/or receipts for parts you purchase and install will be required to document main- tenance done in accordance with the warranty. The chart below is printed only as a reminder to you that the maintenance work is required.
Page 163: Yamaha Motor Corporation, U.s.a. Atv Limited Warranty
(6) months from the date of purchase. appropriate owner’s manual; YAMAHA MOTOR CORPORATION, U.S.A. MAKES NO 2. Give notice to an authorized Yamaha ATV dealer OTHER WARRANTY OF ANY KIND, EXPRESSED OR of any and all apparent defects within ten (10) days DURING THE PERIOD OF WARRANTY any authorized IMPLIED.
Page 164 Attention: Warranty Department 3. Each Yamaha ATV dealer is held responsible for his setup, service and war- ranty repair work. This will ensure that Yamaha Motor Corporation, U.S.A. has an up-to-date registration record in accordance with federal law.
Page 165: Yamaha Extended Service (Y.e.s.)
Yamaha people who handle your warranty – and it Y.E.S. coverage is transferable to a new owner if you shows in the comprehensive coverage benefits. There sell or trade in your ATV. That can make your Yamaha are no mileage limitations. Coverage isn’t limited to much more valuable! “moving par ts”...
Page 166 Y.E.S. costs less within the first 90 days after you buy your Yamaha. See your dealer today! A special note: If visiting your dealer isn’t convenient, contact Yamaha with your Primar y ID number (your frame number). We’ll be happy to help you get the Y.E.S. coverage you need.
Page 167 INDEX Accessories and loading ..........6-6 Differential gear oil ..........5-3, 8-24 Accessories, auxiliary jack ........... 4-22 Drive select lever ............4-15 Air filter element, cleaning ..........8-30 Drive select lever and driving in reverse ......6-3 Axle boots ..............8-47 Drive select lever safety system cable, adjusting ..
Page 168 Identification numbers ..........11-1 Rear brake, adjusting the lever, pedal free play and Indicator lights and warning lights ........4-2 pedal height ............... 8-41 Instruments, lights and switches ........5-7 Rear knuckle pivots, lubricating ........8-51 Reverse indicator light ............ 4-3 Riding your ATV .............
Page 169 Warranty, extended ............11-8 Warranty, limited ............11-6 Wheel hub bearings, checking ........8-50 Wheel, installing ............8-62 Wheel, removing ............8-61...
Page 171 EBU30392 For your best ownership experience, think Genuine Yamaha! Genuine Yamaha Parts – Genuine Yamaha replacement parts are the exact same parts as the ones originally equipped on your vehicle, providing you with the performance and durability you have come to expect.
Page 172 EBU26152 WARNING Improper ATV use can result in SEVERE INJURY or DEATH. ALWAYS USE NEVER USE NEVER CARRY NEVER USE AN APPROVED ON PUBLIC PASSENGERS WITH DRUGS HELMET AND ROADS OR ALCOHOL PROTECTIVE GEAR NEVER ALWAYS operate: without proper training or instruction. use proper riding techniques to avoid at speeds too fast for your skills or the vehicle overturns on hills and rough...

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