wheel YAMAHA YZ85 2022 User Guide

Periodic maintenance an d a djustment
7-21
7 5. If the drive chain slack is incorrect,
adjust it as follows. NOTICE: Im-
proper drive chain slack will
overloa d the en gine as well as
other vital parts of the motorcy-
cle an d can lead to chain slip-
pa ge or breakag e. To prevent
this from occurrin g, keep the
d rive chain slack within the
specified limits.
[ECA10572]
EAU84060
To adjust the d rive chain slack
Consult a Yamaha dealer before ad-
justing the drive chain slack. 1. Loosen the axle nut and the lock- nut on each side of the swingarm. 2. To tighten the drive chain, turn the
drive chain slack adjusting bolt on
each side of the swingarm in di-
rection (a). To loosen the drive
chain, turn the adjusting bolt on
each side of the swingarm in di-
rection (b), and then push the rear
wheel forward.
TIPUsing the alignment marks on the drive
chain pullers and the notch on each
side of the swingarm, make sure that
both drive chain pullers are in the same
position for proper wheel alignment.
Distance A:58.0–68.0 mm (2.28–2.68 in) (YZ85,
YZ85N)
65.0–75.0 mm (2.56–2.95 in)
(YZ85LW, YZ85LWN)
1. Axle nut
2. Locknut
2 2
12
1
1. Drive chain slack adjusting bolt
(b) (b)
(a) (a)
1(b)
(a)
1
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Periodic maintenance an d a djustment
7-25
7
EAU23273
Checkin g the front forkThe condition and operation of the
front fork must be checked as follows
at the intervals specified in the periodic
maintenance and lubrication chart.
To check the con dition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation 1. Place the vehicle on a level sur- face and hold it in an upright posi-
tion. WARNING! To avoi d injury,
securely support the vehicle so
there is no dan ger of it fallin g
over.
[EWA10752]
2. While applying the front brake, push down hard on the handle-
bars several times to check if the
front fork compresses and re-
bounds smoothly.
NOTICE
ECA10591
If any d amage is foun d or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it.
EAU23285
Checkin g the steerin gWorn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the
periodic maintenance and lubrication
chart.
1. Raise the front wheel off the ground. (See page 7-26.)
WARNING! To avoi d injury, se-
curely support the vehicle so
there is no dan ger of it fallin g
over.
[EWA10752]
2. Hold the lower ends of the front fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steer-
ing.
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Periodic maintenance an d a djustment
7-26
7
EAU23292
Checkin g the wheel bearin gsThe front and rear wheel bearings must
be checked at the intervals specified in
the periodic maintenance and lubrica-
tion chart. If there is play in the wheel
hub or if the wheel does not turn
smoothly, have a Yamaha dealer
check the wheel bearings.
EAU75190
Supportin g the motorcycleSince this model is not equipped with a
centerstand, use a maintenance stand
when removing the front or rear wheel,
adjusting the chain or washing the ve-
hicle, etc.
Check that the motorcycle is in a stable
and level position before starting any
maintenance.TIPIf a suitable maintenance stand is not
available, a strong wooden box can be
used instead.
EAU24361
Front wheel
EAU56372
To remove the front wheel
WARNING
EWA10822
To avoi d injury, securely support the
vehicle so there is no dan ger of it
fallin g over.1. Loosen the axle nut.
2. Place the motorcycle on a suitable
stand. (See page 7-26.)
3. Remove the axle nut and washer.
4. Pull out the wheel axle.
1. Maintenance stand (for off-road motorcycle)
1
1. Washer
2. Axle nut
1 11 2
2
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Periodic maintenance an d a djustment
7-27
7 5. Remove the wheel.
NOTICE: Do
not apply the b rake after the
wheel an d b rake disc have b een
remove d, otherwise the brake
pa ds will be forced shut.
[ECA11073]
To install the front wheel
1. Make sure the brake pads have not been forced shut.
2. Lift up the wheel between the fork legs.
3. Insert the wheel axle from the right side.
4. Install the washer and axle nut.
5. Tighten the axle nut to the speci- fied torque.
EAU25081
Rear wheel
EAU84051
To remove the rear wheel
WARNING
EWA10822
To avoi d injury, securely support the
vehicle so there is no dan ger of it
fallin g over.1. Loosen the axle nut.
2. Place the motorcycle on a suitable
stand. (See page 7-26.)
1. Wheel axle
1 11
Tightenin g torque:
Axle nut:
70 N·m (7.0 kgf·m, 52 lb·ft)
1. Washer
2. Axle nut
2 2
12
1
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Periodic maintenance an d a djustment
7-28
7
3. Loosen the locknut, and then turn
the drive chain slack adjusting bolt
in direction (a). Repeat for the oth-
er side.
4. Remove the axle nut and washer.
5. Push the wheel forward and re- move the drive chain from the rear
sprocket. 6. While supporting the brake caliper
bracket, pull out the wheel axle.
TIPA rubber mallet may be useful to
tap the wheel axle out.
 The drive chain pullers may fall out
when removing the wheel axle.7. Remove the wheel. NOTICE: Do
not apply the b rake after the
wheel an d b rake disc have been
remove d, otherwise the brake
pa ds will be forced shut.
[ECA11073]
TIPIf the drive chain is difficult to re-
move, remove the wheel axle first. 
For easy installation, rest the drive
chain on top of the swingarm.
To install the rear wheel
1. Make sure the brake pads have not been forced shut.
2. Install the wheel, the brake caliper bracket and drive chain pullers by
inserting the wheel axle from the
left side.TIPMake sure the slot in the brake caliper
bracket is fit over the retainer on the
swingarm.3. Install the drive chain onto the rearsprocket.
1. Drive chain slack adjusting bolt
2. Locknut
3. Drive chain puller
2 2
3 (a) (a)
12
3
(a)
1
1. Wheel axle
1 11
1. Retainer
2. Slot
2 1
UB4B83E0.book Page 28 Thursday, September 9, 2021 8:47 AM

Motorcycle care and stora ge
8-1
8
EAU37834
Matte color cautionNOTICE
ECA15193
Some mo dels are equipped with
matte colored finished parts. Be
sure to consult a Yamaha dealer for
a d vice on what prod ucts to use be-
fore cleanin g the vehicle. Usin g a
b rush, harsh chemical pro ducts or
cleanin g compoun ds when cleanin g
these parts will scratch or damag e
their surface. Wax also shoul d not
b e applie d to any matte colored fin-
ishe d parts.
EAU86440
CareFrequent, thorough cleaning of the ve-
hicle will not only enhance its appear-
ance but also will improve its general
performance and extend the useful life
of many components. Washing, clean-
ing, and polishing will also give you a
chance to inspect the condition of the
vehicle more frequently. Be sure to
wash the vehicle after riding in the rain
or near the sea, because salt is corro-
sive to metals.TIP The roads of heavy snowfall areas
may be sprayed with salt as a de-
icing method. This salt can stay on
the roads well into spring, so be
sure to wash the underside and
chassis parts after riding in such
areas.
 Genuine Yamaha care and main-
tenance products are sold under
the YAMALUBE brand in many
markets worldwide.
NOTICE
ECA26280
Improper cleanin g can cause cos-
metic an d mechanical damag e. Do
not use:  high-pressure washers or
steam-jet cleaners. Excessive
water pressure may cause wa-
ter seepag e and d eterioration of
wheel bearin gs, brakes, trans-
mission seals an d electrical de-
vices. Avoi d hi gh-pressure
d eter gent applications such as
those availab le in coin-operate d
car washers.
 harsh chemicals, inclu din g
stron g aci dic wheel cleaners,
especially on spoke or ma gne-
sium wheels.
 harsh chemicals, a brasive
cleanin g compoun ds, or wax on
matte-finishe d parts. Brushes
can scratch an d damag e the
matte-finish, use soft spon ge or
towel only.
 towels, spon ges, or brushes
contaminate d with a brasive
cleanin g prod ucts or stron g
UB4B83E0.book Page 1 Thursday, September 9, 2021 8:47 AM

Motorcycle care and stora ge
8-2
8 chemicals such as, solvents,
g
asoline, rust removers, b rake
flui d, or antifreeze, etc.
Before washin g
1. Park the vehicle out of direct sun- light and allow it to cool. This will
help avoid water spots.
2. Make sure all caps, covers, elec- trical couplers and connectors are
tightly installed.
3. Cover the muffler end with a plas- tic bag and a strong rubber band.
4. Pre-soak stubborn stains like in- sects or bird droppings with a wet
towel for a few minutes.
5. Remove road grime and oil stains with a quality degreasing agent
and a plastic-bristle brush or
sponge. NOTICE: Do not use
d eg reasin g a gent on areas re-
quirin g lu brication such as
seals, gaskets, an d wheel axles.
Follow prod uct instructions.
[ECA26290]
Washing
1. Rinse off any degreaser and spray down the vehicle with a garden
hose. Use only enough pressure
to do the job. Avoid spraying wa-
ter directly into the muffler, instru-
ment panel, air inlet, or other inner
areas such as underseat storage
compartments.
2. Wash the vehicle with a quality au- tomotive-type detergent mixed
with cool water and a soft, clean
towel or sponge. Use an old tooth-
brush or plastic-bristle brush for
hard-to-reach places. NOTICE:
Use col d water if the vehicle has
b een exposed to salt. Warm wa-
ter will increase salt’s corrosive
properties.
[ECA26301]
3. For windshield-equipped vehicles: Clean the windshield with a soft
towel or sponge dampened with
water and a pH neutral detergent.
If necessary, use a high-quality
windshield cleaner or polish for
motorcycles. NOTICE: Never use
any stron g chemicals to clean
the win dshiel d. A dditionally,
some cleanin g compoun ds for plastic may scratch the win
d-
shiel d, so b e sure to test all
cleanin g prod ucts before gen-
eral application.
[ECA26310]
4. Rinse off thoroughly with clean water. Be sure to remove all deter-
gent residues, as they can be
harmful to plastic parts.
After washin g
1. Dry the vehicle with a chamois or absorbent towel, preferably mi-
crofiber terrycloth.
2. For drive chain-equipped models: Dry and then lubricate the drive
chain to prevent rust.
3. Use a chrome polish to shine chrome, aluminum, and stainless
steel parts. Often the thermally in-
duced discoloring of stainless
steel exhaust systems can be re-
moved through polishing.
4. Apply a corrosion protection spray on all metal parts including
chrome or nickel-plated surfaces.
WARNING! Do not apply sili-
cone or oil spray to seats, han d
g rips, ru bber foot peg s or tire
trea ds. Otherwise these parts
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Motorcycle care and stora ge
8-4
8 1. Make all necessary repairs and
perform any outstanding mainte-
nance.
2. Follow all instructions in the Care Section of this chapter.
3. Fill up the fuel tank and add fuel stabilizer according to product in-
structions.
4. Run the engine for 5 minutes to distribute treated fuel through the
fuel system.
5. For vehicles with a fuel cock: Turn the fuel cock lever to the off posi-
tion.
6. For vehicles with a carburetor: To prevent fuel deposits from build-
ing up, drain the fuel in the carbu-
retor float chamber into a clean
container. Retighten the drain bolt
and pour the fuel back into the fuel
tank.
7. Use a quality engine fogging oil according to product instructions.
If engine fogging oil is not avail-
able, perform the following steps
for each cylinder: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 spark-
ing during the next step.)
d. Turn the engine over several times with the starter or kick-
starter. (This will coat the cylin-
der wall with oil.) WARNING!
To prevent d amage or injury
from sparkin g, make sure to
g roun d the spark plu g elec-
tro des while turning the en-
g ine over.
[EWA10952]
e. Remove the spark plug cap
from the spark plug, and then
install the spark plug and the
spark plug cap.
8. Lubricate all control cables, piv- ots, levers and pedals, as well as
the sidestand and centerstand (if
equipped).
9. Check and correct the tire air pressure, and then lift the vehicle
so that all wheels are off the
ground. If maintenance stands are not available, turn the wheels a lit-
tle once a month in order to pre-
vent the tires from becoming
degraded in one spot.
10. Cover the muffler outlet with a plastic bag to prevent moisture
from entering it.
11. For vehicles with a battery: Re- move and fully charge it, or attach
a maintenance charger. NOTICE:
Confirm that the battery an d its
char ger are compati ble. Do not
char ge a VRLA b attery with a
conventional char ger.
[ECA26330]
UB4B83E0.book Page 4 Thursday, September 9, 2021 8:47 AM

Specifications
9-1
9
Dimensions:Overall length:1820 mm (71.7 in) (YZ85, YZ85N)
1895 mm (74.6 in) (YZ85LW, YZ85LWN)
Overall width: 760 mm (29.9 in)
Overall height:
1135 mm (44.7 in) (YZ85, YZ85N)
1175 mm (46.3 in) (YZ85LW, YZ85LWN)
Seat height:
840 mm (33.1 in) (YZ85, YZ85N)
885 mm (34.8 in) (YZ85LW, YZ85LWN)
Wheelbase:
1255 mm (49.4 in) (YZ85, YZ85N)
1285 mm (50.6 in) (YZ85LW, YZ85LWN)
Ground clearance:
320 mm (12.60 in) (YZ85, YZ85N)
360 mm (14.17 in) (YZ85LW, YZ85LWN)Wei ght:Curb weight:
73 kg (161 lb) (YZ85, YZ85N)
75 kg (165 lb) (YZ85LW, YZ85LWN)
Maximum rider weight: 62.0 kg (137 lb)Engine:Combustion cycle:
2-stroke
Cooling system: Liquid cooled
Number of cylinders: Single cylinder
Displacement:
85 cm³ Bore
× stroke:
47.5 × 47.8 mm (1.87 × 1.88 in)
Starting system: Kickstarter
Engine oil:Engine oil:
YAMALUBE 2R
Recommended brand:Transmission oil:Type: Motor oil SAE 10W-40 type SG or higher
Quantity:
0.50 L (0.53 US qt, 0.44 Imp.qt)Coolant quantity:Radiator (including all routes):0.50 L (0.53 US qt, 0.44 Imp.qt)Fuel:Recommended fuel:Unleaded gasoline (E10 acceptable)
Octane number (RON): 98
Fuel tank capacity:
5.0 L (1.3 US gal, 1.1 Imp.gal)Car buretor:Type × quantity:
PWK28 × 1
Drivetrain:Gear ratio:
1st:
2.455 (27/11)
2nd: 1.882 (32/17)
3rd:
1.529 (26/17)
4th: 1.294 (22/17)
5th: 1.130 (26/23)
6th:
1.000 (25/25)Front tire:Type:With tube
Size:
70/100-17 40M (YZ85, YZ85N)
70/100-19 42M (YZ85LW, YZ85LWN)
Manufacturer/model:
DUNLOP/MX3SFRear tire:Type: With tube
Size:
90/100-14 49M (YZ85, YZ85N)
90/100-16 52M (YZ85LW, YZ85LWN)
Manufacturer/model:
DUNLOP/MX3SFront brake:Type:
Hydraulic single disc brake
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11-1
11
Index
AAir filter element, cleaning .................... 7-11BBrake and clutch levers, checking
and lubricating ................................... 7-23
Brake fluid, changing............................ 7-20
Brake fluid level, checking.................... 7-19
Brake lever.............................................. 4-2
Brake lever free play, checking ............ 7-17
Brake pedal ............................................ 4-3
Brake pedal, checking and lubricating........................................... 7-24CCables, checking and lubricating ......... 7-22
Carburetor, adjusting............................ 7-13
Care ........................................................ 8-1
Clutch lever............................................. 4-1
Clutch lever free play, adjusting ........... 7-16
Coolant ................................................... 7-9DDrive chain, cleaning and lubricating ... 7-22
Drive chain slack .................................. 7-20EEngine break-in ...................................... 6-1
Engine idling speed .............................. 7-13
Engine overheating ............................... 7-31
Engine serial number ............................ 10-1
Engine, starting a warm.......................... 6-3
Engine stop switch ................................. 4-1FFront and rear brake pads, checking ... 7-18
Front fork, adjusting ............................... 4-8
Front fork, bleeding .............................. 4-10
Front fork, checking ............................. 7-25 Fuel ........................................................ 4-3
Fuel cock................................................ 4-6
Fuel tank breather hose ......................... 4-6
Fuel tank cap.......................................... 4-3
HHandlebar switch ................................... 4-1IIdentification numbers ......................... 10-1KKickstarter .............................................. 4-7LLabels, location ...................................... 1-1MMatte color, caution ............................... 8-1PParking ................................................... 6-4
Part locations ......................................... 3-1
Periodic maintenance and lubrication
chart ..................................................... 7-2RRear suspension, lubricating................ 7-24SSafety defects, reporting (For CANADA customers) ......................... 10-2
Safety information .................................. 2-1
Seat ........................................................ 4-7
Shifting ................................................... 6-3
Shift pedal .............................................. 4-2
Shift pedal, checking ........................... 7-18
Shock absorber assembly, adjusting ... 4-11
Sidestand ............................................. 4-14
Spark plug, checking ............................. 7-7
Specifications......................................... 9-1
Starter (choke) knob............................... 4-7 Starting and warming up a cold
engine ................................................... 6-2
Steering, checking ................................ 7-25
Storage ................................................... 8-3
Supporting the motorcycle ................... 7-26
Swingarm pivots, lubricating ................ 7-24
TThrottle grip and cable, checking and lubricating ........................................... 7-23
Throttle grip free play, adjusting ........... 7-13
Tires ...................................................... 7-14
Transmission oil ...................................... 7-8
Troubleshooting .................................... 7-29
Troubleshooting chart........................... 7-30VVehicle identification number ............... 10-1WWheel bearings, checking .................... 7-26
Wheel (front).......................................... 7-26
Wheel (rear)........................................... 7-27
Wheels .................................................. 7-16YYPVS system ........................................ 4-14
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