wheel YAMAHA YZ85 2015 Owners Manual

TABLE OF CONTENTS
LOCATION OF IMPORTANT
LABELS..............................................1-1
SAFETY INFORMATION ...................2-1
DESCRIPTION ...................................3-1
Left view ..........................................3-1
Right view ........................................3-2
Controls and instruments ................3-3
INSTRUMENT AND CONTROL
FUNCTIONS .......................................4-1
Handlebar switch ............................4-1
Clutch lever .....................................4-1
Shift pedal .......................................4-2
Brake lever ......................................4-2
Brake pedal .....................................4-3
Fuel tank cap ...................................4-3
Fuel ..................................................4-3
Fuel tank breather hose...................4-5
Fuel cock .........................................4-6
Starter (choke) knob ........................4-6
Kickstarter .......................................4-7
Seat .................................................4-7
Adjusting the front fork ....................4-8
Front fork bleeding ..........................4-9
Adjusting the shock absorber assembly ....................................4-10
Removable sidestand ....................4-12 FOR YOUR SAFETY –
PRE-OPERATION CHECKS
............. 5-1
OPERATION AND IMPORTANT
RIDING POINTS ................................ 6-1
Starting and warming up a cold engine .......................................... 6-1
Starting a warm engine................... 6-1
Shifting............................................ 6-2
Engine break-in............................... 6-3
Parking ............................................ 6-4
PERIODIC MAINTENANCE AND
ADJUSTMENT .................................. 7-1
Periodic maintenance and lubrication chart .......................... 7-2
Checking the spark plug................. 7-8
Transmission oil .............................. 7-9
Coolant ......................................... 7-10
Cleaning the air filter element ....... 7-12
Adjusting the carburetor ............... 7-14
Adjusting the engine idling speed......................................... 7-14
Adjusting the throttle grip free play ............................................ 7-15
Tires .............................................. 7-15
Spoke wheels ............................... 7-17
Adjusting the clutch lever free play ............................................ 7-18
Checking the brake lever free play ............................................ 7-19 Checking the shift pedal ............... 7-19
Checking the front and rear brake
pads ........................................... 7-20
Checking the brake fluid level ....... 7-20
Changing the brake fluid ............... 7-22
Drive chain slack ........................... 7-22
Cleaning and lubricating the drive chain .......................................... 7-23
Checking and lubricating the cables ........................................ 7-24
Checking and lubricating the
throttle grip and cable ............... 7-24
Checking and lubricating the brake and clutch levers ............. 7-24
Checking and lubricating the brake pedal ................................ 7-25
Lubricating the rear suspension.... 7-25
Lubricating the swingarm pivots ... 7-26
Checking the front fork ................. 7-26
Checking the steering ................... 7-27
Checking the wheel bearings ........ 7-27
Supporting the motorcycle ........... 7-28
Front wheel ................................... 7-28
Rear wheel .................................... 7-29
Troubleshooting ............................ 7-31
Troubleshooting charts ................. 7-32
MOTORCYCLE CARE AND
STORAGE .......................................... 8-1
Matte color caution ......................... 8-1
Care................................................. 8-1
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SAFETY INFORMATION
2-2
2

Many accidents involve inexperi-
enced operators.
• Make sure that you are qualified and that you only lend your mo-
torcycle to other qualified oper-
ators.
• Know your skills and limits. Staying within your limits may
help you to avoid an accident.
• We recommend that you prac- tice riding your motorcycle until
you have become thoroughly
familiar with the motorcycle and
all of its controls.
 Many accidents have been
caused by error of the motorcycle
operator. A typical error made by
the operator is veering wide on a
turn due to excessive speed or un-
dercornering (insufficient lean an-
gle for the speed). Never travel
faster than warranted by condi-
tions.
 Ride cautiously in unfamiliar ar-
eas. You may encounter hidden
obstacles that could cause an ac-
cident. 
The posture of the operator is im-
portant for proper control. The op-
erator should keep both hands on
the handlebar and both feet on the
operator footrests during opera-
tion to maintain control of the mo-
torcycle.
 Never ride under the influence of
alcohol or other drugs.
 Be sure the transmission is in neu-
tral before starting the engine.
Protective Apparel
The majority of fatalities from motorcy-
cle accidents are the result of head in-
juries. The use of a safety helmet is the
single most critical factor in the pre-
vention or reduction of head injuries.  Always wear an approved helmet.
 Wear a face shield or goggles.
Wind in your unprotected eyes
could contribute to an impairment
of vision that could delay seeing a
hazard.
 The use of a jacket, heavy boots,
trousers, gloves, etc., is effective
in preventing or reducing abra-
sions or lacerations. 
Never wear loose-fitting clothes,
otherwise they could catch on the
control levers, footrests, or wheels
and cause injury or an accident.
 Always wear protective clothing
that covers your legs, ankles, and
feet. The engine or exhaust sys-
tem become very hot during or af-
ter operation and can cause
burns.
Avoi d Car bon Monoxi de Poisonin g
All engine exhaust contains carbon
monoxide, a deadly gas. Breathing
carbon monoxide can cause head-
aches, dizziness, drowsiness, nausea,
confusion, and eventually death.
Carbon Monoxide is a colorless, odor-
less, tasteless gas which may be pres-
ent even if you do not see or smell any
engine exhaust. Deadly levels of car-
bon monoxide can collect rapidly and
you can quickly be overcome and un-
able to save yourself. Also, deadly lev-
els of carbon monoxide can linger for
hours or days in enclosed or poorly
ventilated areas. If you experience any
symptoms of carbon monoxide poi-
U1SN83E0.book Page 2 Monday, September 8, 2014 2:36 PM

SAFETY INFORMATION
2-4
2
operator and may limit control
ability, therefore, such accesso-
ries are not recommended.
 Use caution when adding electri-
cal accessories. If electrical ac-
cessories exceed the capacity of
the motorcycle’s electrical sys-
tem, an electric failure could re-
sult, which could cause a
dangerous loss of lights or engine
power.
Aftermarket Tires an d Rims
The tires and rims that came with your
motorcycle were designed to match
the performance capabilities and to
provide the best combination of han-
dling, braking, and comfort. Other
tires, rims, sizes, and combinations
may not be appropriate. Refer to page
7-15 for tire specifications and more in-
formation on replacing your tires.
Transportin g the Motorcycle
Be sure to observe following instruc-
tions before transporting the motorcy-
cle in another vehicle.  Remove all loose items from the
motorcycle. 
Check that the fuel cock (if
equipped) is in the “OFF” position
and that there are no fuel leaks.
 Point the front wheel straight
ahead on the trailer or in the truck
bed, and choke it in a rail to pre-
vent movement.
 Shift the transmission in gear (for
models with a manual transmis-
sion).
 Secure the motorcycle with tie-
downs or suitable straps that are
attached to solid parts of the mo-
torcycle, such as the frame or up-
per front fork triple clamp (and not,
for example, to rubber-mounted
handlebars or turn signals, or
parts that could break). Choose
the location for the straps carefully
so the straps will not rub against
painted surfaces during transport.
 The suspension should be com-
pressed somewhat by the tie-
downs, if possible, so that the mo-
torcycle will not bounce exces-
sively during transport.
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INSTRUMENT AND CONTROL FUNCTIONS
4-9
4
TIPAlthough the total number of clicks of a
damping force adjusting mechanism
may not exactly match the above
specifications due to small differences
in production, the actual number of
clicks always represents the entire ad-
justing range. To obtain a precise ad-
justment, it would be advisable to
check the number of clicks of each
damping force adjusting mechanism
and to modify the specifications as
necessary.
EAU51651
Front fork bleedin g
WARNING
EWA10201
Always blee d b oth fork le gs, other-
wise poor han dlin g an d loss of sta-
b ility may result.When riding in extremely rough condi-
tions, the air temperature and pressure
in the front fork will rise. This will in-
crease the spring preload and harden
the front suspension. If this occurs,
bleed the front fork as follows.
1. Lift the front wheel off the ground according to the procedure on
page 7-28.TIPWhen bleeding the front fork, there
should be no weight on the front end of
the vehicle.2. Remove the bleed screws and al-low all of the air to escape from
each fork leg. 3. Install the bleed screws.
4. Lower the front wheel so that it is
on the ground, install the remov-
able sidestand, and then rest the
motorcycle on it.
1. Bleed screw
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FOR YOUR SAFETY – PRE-OPERATION CHECKS
5-2
5
Rear brake • Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check brake pads for wear.
• Replace if necessary.
• Check fluid level in reservoir.
• If necessary, add specified brake fluid to specified level.
• Check hydraulic system for leakage. 7-20, 7-20
Clutch • Check operation.
• Lubricate cable if necessary.
• Check lever free play.
• Adjust if necessary.
7-18
Throttle g rip • Make sure that operation is smooth.
• Check throttle grip free play.
• If necessary, adjust throttle grip free play. 7-15, 7-24
Drive chain • Check chain slack.
• Adjust if necessary.
• Check chain condition.
• Lubricate if necessary. 7-22, 7-23
Wheels an d tires •Check for damage.
• Check tire condition and tread depth.
• Check air pressure.
• Correct if necessary.
• Check for loose spokes and tighten if necessary. 7-15, 7-17
Shift pe dal • Make sure that operation is smooth.
• Correct if necessary.
7-19
Brake ped al • Make sure that operation is smooth.
• Lubricate pedal pivoting point if necessary. 7-25
Brake an d clutch levers • Make sure that operation is smooth.
• Lubricate lever pivoting points if necessary.
7-24
Steerin g • Check that the handlebar can be turned smoothly and has no excessive play. 7-27
ITEM CHECKS PAGE
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-3
7
√
5 *Cylinder • Check cylinder for score marks or wear.
Clean.
√
Replace. √
NO. ITEM ROUTINE
After
break-in Every
race Every
third race Every
fifth race As
required
6 *Clutch Check clutch housing, friction plates, clutch plates
and clutch springs for wear or damage.
Adjust. √
√
Replace. √
7 *Transmission Change the transmission oil.
√
Check transmission for damage. √
Replace bearings. √
8 *Shift forks, guide bars,
shift cam
Replace if necessary. Check all parts for wear and damage.
√
9 *Rotor nut
(flywheel
magneto) Tighten.
√√√
10 *Kickstarter system Check idle gear for damage.
√
Replace if necessary.
11 *Exhaust system Check exhaust pipe and muffler for carbon deposits.
√
√
Clean. √
√
√
√
√
12
*Crankshaft Check crankshaft for carbon deposits and damage.
Clean.
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-6
7
EAU42012
TIPHydraulic brake service
• Regularly check and, if necessary, correct the brake fluid levels.
√
√√
√
24
*Drive chain roller and
support guide
Replace if necessary. Check for wear or damage.
√
25 *Rear suspension Check operation and tighten if necessary.
Lubricate with
lithium-soap-based grease
.
NO.
ITEM ROUTINEAfter
break-in Every
race Every
third race Every
fifth race As
required
√ √√
√
√ √
√
√ √
√
√
√ √
√
√
26
*Steering head Check operation, free play, and tighten if necessary.
Clean and lubricate with lithium-soap-based grease.
Replace bearings.
27 *Tires and wheels Check tire air pressure, wheel runout, spokes for
looseness, and tires for wear.
Tighten sprocket bolts if necessary.
Check wheel bearings for looseness.
Lubricate wheel bearings with lithium-soap-based grease.
Replace wheel bearings.
28 *Moving parts and ca-
bles Lubricate.
29 *Throttle grip Check operation.
Check throttle grip free play, and adjust if necessary.
Lubricate cable and grip housing.
U1SN83E0.book Page 6 Monday, September 8, 2014 2:36 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-17
7
WARNING
EWA14391
Have a Yamaha dealer replace
excessively worn tires. Operat-
in g the motorcycle with exces-
sively worn tires decreases
ri din g sta bility an d can lead to
loss of control.
 The replacement of all wheel-
and b rake-relate d parts, inclu d-
in g the tires, shoul d b e left to a
Yamaha dealer, who has the
necessary professional knowl-
e dge an d experience. 
It is not recommen ded to patch
a punctured tube. If unavoi d-
a b le, however, patch the tu be
very carefully an d replace it as
soon as possi ble with a hi gh-
quality pro duct.
EAU48322
Spoke wheels
WARNING
EWA10611
The wheels on this mo del are not
d esi gne d for use with tu beless tires.
Do not attempt to use tu beless tires
on this mo del.To maximize the performance, durabil-
ity, and safe operation of your motor-
cycle, note the following points
regarding the specified wheels.
 The wheel rims should be
checked for cracks, bends, warp-
age or other damage and the
spokes for looseness or damage
before each ride. If any damage is
found, have a Yamaha dealer re-
place the wheel. Do not attempt
even the smallest repair to the
wheel. A deformed or cracked
wheel must be replaced.
 The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
Front tire:
Size:
YZ85 70/100-17 40M
YZ85F 70/100-17 40M
YZ85LW 70/100-19 42M
YZ85LWF 70/100-19 42M
Manufacturer/model:
DUNLOP/MX51F
Rear tire: Size:
YZ85 90/100-14 49M
YZ85F 90/100-14 49M
YZ85LW 90/100-16 52M
YZ85LWF 90/100-16 52M
Manufacturer/model: DUNLOP/MX51
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-22
7
EAU51721
Changin g the brake flui dHave a Yamaha dealer change the
brake fluid at the intervals specified in
the periodic maintenance and lubrica-
tion chart. In addition, have the oil seals
of the master cylinders and calipers as
well as the brake hoses replaced at the
intervals listed below or whenever they
are damaged or leaking.
 Oil seals: Replace every two
years.
 Brake hoses: Replace every four
years.
EAU22762
Drive chain slackThe drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU41413
To check the drive chain slack
1. Install the removable sidestand and place the motorcycle on it.TIPWhen checking and adjusting the drive
chain slack, there should be no weight
on the motorcycle.2. Shift the transmission into theneutral position.
3. Measure the drive chain slack as shown. 4. If the drive chain slack is incorrect,
adjust it as follows.
EAU41484
To a djust the drive 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. NOTICE: Improp-
er drive chain slack will over-
Drive chain slack:
35.0–45.0 mm (1.38–1.77 in)
1. Drive chain slack
U1SN83E0.book Page 22 Monday, September 8, 2014 2:36 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-23
7loa
d the en gine as well as other
vital parts of the motorcycle an d
can lead to chain slippa ge or
b reakag e. To prevent this from
occurrin g, keep the drive chain
slack within the specifie d limits.
[ECA10572]
TIPUsing the alignment marks on each
drive chain puller, make sure that both
drive chain pullers are in the same po-
sition for proper wheel alignment.
3. Tighten both locknuts and the axle
nut to the specified torques.
4. Make sure that the drive chain pullers are in the same position,
the drive chain slack is correct,
and the drive chain moves
smoothly.
EAU23018
Cleanin g an d lu bricatin g the
d rive chainThe drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly wear
out, especially when riding in dusty or
wet areas. Service the drive chain as
follows.NOTICE
ECA10584
The drive chain must be lu bricated
after washin g the motorcycle, ri din g
in the rain or ri din g in wet areas.1. Remove all dirt and mud from the
drive chain with a brush or cloth.TIPFor a thorough cleaning, have a
Yamaha dealer remove the drive chain and soak it in solvent.2. Spray Yamaha chain lubricant or other suitable chain lubricant on
the entire chain, making sure that
all side plates and rollers have
been sufficiently oiled.
1. Axle nut
2. Drive chain puller
3. Locknut
4. Drive chain slack adjusting bolt
5. Alignment marks
5 4
32
Ti
ghtenin g torques:
Locknut: 16 Nm (1.6 m·kgf, 12 ft·lbf)
Axle nut:
90 Nm (9.0 m·kgf, 65 ft·lbf)
U1SN83E0.book Page 23 Monday, September 8, 2014 2:36 PM