2022 YAMAHA YFM90R light

10-2
10abrasives which may mar the paint or protec-
tive finish. When finished cleaning, start the
engine and let it idle for several minutes.
9. If the headlight lens has fogged up, start the engine and turn on the headlight to help re-
move the moisture.
EBU30362StorageShort-term
Always store your ATV in a cool, dry place and, if
necessary, protect it against dust with a porous
cover. NOTICE: Storing the ATV in a poorly ven-
tilated room or covering it with a tarp while it is
still wet, will allow water and humidity to seep
in and cause rust. To prevent corrosion, avoid
damp cellars, stables (because of the presence
of ammonia) and areas where strong chemi-
cals are stored.
[ECB00722]
Long-term
Before storing your ATV for several months: 1. Make any necessary repairs and perform all outstanding maintenance.
2. Follow all the instructions in the Cleaning sec- tion of this chapter. 3. Fill up the fuel tank and add fuel stabilizer (Fu-
el Med Rx if available), and then run the en-
gine for 5 minutes to distribute the treated
fuel.
4. Turn the fuel cock lever off, and then drain the carburetor float chamber by loosening the
drain bolt. Pour the drained fuel into the fuel
tank.
5. Perform the following steps to protect the en- gine from internal corrosion.a. Remove the spark plug cap and spark plug.
b. Pour a teaspoonful of engine oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place the spark plug on the
cylinder head so that the electrodes are
grounded. (This will limit sparking during
the next step.)
d. Turn the engine over several times with the starter. (This will coat the cylinder wall
with oil.)
Specified amount:
7.5 ml per liter of fuel (1 oz per gallon)UBD366E0.book Page 2 Thursday, June 10, 2021 2:39 PM

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12
INDEX
AAccessories and loading ................................................ 7-6
Air filter element, cleaning ........................................... 9-15BBattery ......................................................................... 9-31
Brake lever free play, adjusting the front ..................... 9-23
Brake lever free play (rear), adjusting .......................... 9-24
Brake lever, front ........................................................... 5-5
Brake lever, rear ............................................................. 5-5
Brake levers, checking and lubricating ........................ 9-28
Brakes .......................................................................... 9-21
Brakes, front and rear .................................................... 6-3CCables, checking and lubricating ................................ 9-28
Carburetor, adjusting ................................................... 9-19
Chassis fasteners .......................................................... 6-6
Cleaning ....................................................................... 10-1DDrive chain ..................................................................... 6-3
Drive chain, lubricating ................................................ 9-27
Drive chain slack .......................................................... 9-25
Drive select lever ........................................................... 5-6
Drive select lever and driving in reverse ........................ 7-3EEngine break-in .............................................................. 7-4
Engine, cold start ........................................................... 7-1
Engine idling speed ..................................................... 9-19
Engine oil ..............................................................6-3, 9-10
Engine, starting a warm ................................................. 7-3Engine stop switch ........................................................ 5-2
FFront and rear brake shoes, checking ......................... 9-21
Front arm pivots, lubricating ........................................ 9-29
Front knuckle pivots, lubricating ................................. 9-30
Fuel ......................................................................... 5-9, 6-3
Fuel cock ..................................................................... 5-10
Fuel tank cap ................................................................. 5-8
Fuse, replacing ............................................................ 9-34HHandlebar switches ....................................................... 5-2IIdentification numbers ................................................... 1-1
Indicator lights ............................................................... 5-1
Instruments and switches .............................................. 6-6KKickstarter ...................................................................... 5-7LLabel locations ............................................................... 2-1MMain switch .................................................................... 5-1
Maintenance chart, emission control system ................ 9-3
Maintenance chart, general maintenance and
lubrication .................................................................... 9-5
Model label .................................................................... 1-1NNeutral indicator light .................................................... 5-1OOwner’s Manual and tool kit .......................................... 9-2
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12
PParking ........................................................................... 7-5
Parking brake ................................................................. 5-5
Parking on a slope ......................................................... 7-5
Part locations ................................................................. 4-1RReverse indicator light ................................................... 5-1
Riding your ATV ............................................................. 8-1SSafety information .......................................................... 3-1
Seat .............................................................................. 5-13
Shock absorber, rear ...................................................5-15
Shock absorbers, front ................................................ 5-13
Spark arrester, cleaning ............................................... 9-18
Spark plug, checking .....................................................9-9
Specifications ............................................................... 11-1
Speed limiter .................................................................. 5-3
Starter (choke) .............................................................. 5-12
Start switch .................................................................... 5-2
Steering shaft, lubricating ............................................ 9-30
Storage ......................................................................... 10-2TThrottle lever .......................................................... 5-2, 6-3
Throttle lever free play, adjusting ................................. 9-20
Tires ............................................................................... 6-3
Transmission .................................................................. 6-3
Transmission oil ........................................................... 9-14
Troubleshooting ........................................................... 9-36
Troubleshooting chart .................................................. 9-37VValve clearance ............................................................ 9-21Vehicle identification number ......................................... 1-1
WWheel hub bearings, checking ..................................... 9-29
Wheel, installing ........................................................... 9-35
Wheel, removing .......................................................... 9-34YYamalube ..................................................................... 9-13
UBD366E0.book Page 2 Thursday, June 10, 2021 2:39 PM