tires YAMAHA YZ85 2019 Owners Manual

Table of contents
Location of important la bels ........... 1-1
Safety information ............................ 2-1
Description ....................................... 3-1
Left view ......................................... 3-1
Right view ....................................... 3-2
Controls and instruments ............... 3-3
Instrument an d 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 ................................................. 4-4
Fuel tank breather hose.................. 4-6
Fuel cock ........................................ 4-6
Starter (choke) knob ....................... 4-7
Kickstarter ...................................... 4-7
Seat ................................................ 4-8
Adjusting the front fork ................... 4-8
Front fork bleeding ....................... 4-10
Adjusting the shock absorber assembly ................................... 4-11
Removable sidestand ................... 4-14
YPVS system ................................ 4-15
For your safety – pre-operation
checks ............................................... 5-1
Operation an d important ri din g
points ................................................ 6-1
Starting and warming up a cold
engine ......................................... 6-1
Starting a warm engine .................. 6-2
Shifting ........................................... 6-2
Engine break-in .............................. 6-3
Parking ........................................... 6-5
Perio dic maintenance an d
a d justment ........................................ 7-1
Periodic maintenance and lubrication chart .......................... 7-2
Checking the spark plug ................ 7-6 Transmission oil .............................. 7-7
Coolant ............................................ 7-8
Cleaning the air filter element ....... 7-10
Adjusting the carburetor ............... 7-12
Adjusting the engine idling
speed ......................................... 7-13
Adjusting the throttle grip free play ............................................ 7-13
Tires .............................................. 7-14
Spoke wheels ................................ 7-16
Adjusting the clutch lever free play ............................................ 7-17
Checking the brake lever free play ............................................ 7-18
Checking the shift pedal ............... 7-18
Checking the front and rear brake pads ................................. 7-19
Checking the brake fluid level ....... 7-20
Changing the brake fluid ............... 7-21
Drive chain slack ........................... 7-21
Cleaning and lubricating the drive chain ................................. 7-23
Checking and lubricating the
cables ........................................ 7-23
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 an d stora ge .......... 8-1
Matte color caution ......................... 8-1
Care................................................. 8-1
Storage............................................ 8-3
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Location of important labels
1-7
1
**.* kPa
*.** kgf/cm²
*.* psi **.* kPa
*.** kgf/cm²
*.* psi
T
urn off the main s witch after riding to a void
draining the battery.
Use unleaded gasoline only.
Measure the tire press ure when the tires are
cold.
Adjust the tire press ure.
Improper tire press ure can cause loss of
control.
Loss of control can res ult in severe injury or
death.
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Safety information
2-4
2tempt to lift the motorcycle, or
the motorcycle may become
unstable in cross winds.
• Certain accessories can dis- place the operator from his or
her normal riding position. This
improper position limits the
freedom of movement of the
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
7-14 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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For your safety – pre-operation checks
5-2
5
Drive chain• Check chain slack.
• Adjust if necessary.
• Check chain condition.
• Lubricate if necessary. 7-21,
7-23
Drive sprocket • Check the drive sprocket nut torque.
• Tighten if necessary.
—
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. 7-14,
7-16
Shift pe dal • Make sure that operation is smooth.
• Check the shift pedal bolt torque.
• Correct if necessary. 7-18
Brake ped al • Make sure that operation is smooth.
• Lubricate pedal pivoting point if necessary. 7-25
Brake an d clutch le-
vers • 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
Front fork an d rear
shock ab sorber as-
sem bly • Check that they operate smoothly and there is no oil
leakage. 4-8,
4-10,
4-11, 7-26
Chassis fasteners • Make sure that all nuts, bolts and screws are properly
tightened.
• Check all cotter pins for damage and correct install- ment.
• Tighten or replace if necessary. —
Movin g parts an d ca-
b les • Check the control cables for damage.
• Check that the control cables move smoothly.
• Check that the control cables are not caught when the
handlebars are turned or when the front forks travel up
and down.
• Lubricate moving parts and cables if necessary. 7-23,
7-24,
7-26, 7-25
Exhaust system • Check that the exhaust pipe and muffler are tightly
mounted and have no cracks.
• Check for leakage. —
En gine stop switch • Check operation. 4-1
I g nition system • Check that all leads and cables are properly connected. 7-6
ITEM CHECKS PAGE
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Periodic maintenance an d a djustment
7-5
7
EAU42012
TIP
 Hydraulic brake service
• Regularly check and, if necessary, correct the brake fluid levels.
• Every two years replace the internal components of the brake master cyl- inders and calipers, and change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.
NO. ITEM ROUTINEAfter
break-in
Everyrace
Every
third race
Every
fifth race
As
required
24 *Shock absorber
assembly Check operation and adjust. Tighten if necessary.
Lubricate with lithium-soap-based
grease.

25 *Drive chain roller
and support guide Check for wear or damage. Replace if necessary.
26
*Rear suspension Check operation and tighten if
necessary.
Lubricate with molybdenum disulfidegrease.
Check operation, free play, andtighten if necessary.
27 *
Steering head Clean and lubricate with
lithium-soap-based grease.
Replace bearings. Check tire air pressure, wheel runout,spokes for looseness, and tires for
wear.

Tighten sprocket bolts if necessary.
28 *Tires and wheels
Check wheel bearings for looseness. Lubricate wheel bearings with
lithium-soap-based grease.
Replace wheel bearings.
29 *Moving parts and ca-
bles Lubricate.
30 *
Throttle grip Check operation. Check throttle grip free play, and
adjust if necessary.
Lubricate cable and grip housing.
After washing the motorcycle or riding in the rain.
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Periodic maintenance an d a djustment
7-14
7
4. Tighten the locknut and then slide
the rubber cover to its original po-
sition.
EAU65042
Tires
Tires are the only contact between the
vehicle and the road. Safety in all con-
ditions of riding depends on a relatively
small area of road contact. Therefore, it
is essential to maintain the tires in good
condition at all times and replace them
at the appropriate time with the speci-
fied tires.
Tire air pressure
The tire air pressure should be
checked and, if necessary, adjusted
before each ride.
WARNING
EWA14382
Operation of this vehicle with im-
proper tire pressure may cause se-
vere injury or d eath from loss of
control.  The tire air pressure must b e
checked and a djuste d on col d
tires (i.e., when the temperature
of the tires equals the am bient
temperature).
 The tire air pressure must b e
a d juste d in accor dance with the
wei ght of the ri der, the ri din g
speed , and the ri din g con di-
tions.
1. Locknut
2. Throttle grip free play adjusting nut
3. Rubber cover
1 2
3
(a)
(b)
Standar d tire air pressure:
Front: 100 kPa (1.00 kgf/cm², 15 psi)
Rear:
100 kPa (1.00 kgf/cm², 15 psi)
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Periodic maintenance an d a djustment
7-15
7 Tire inspection
The tires must be checked before each
ride.
NOTICE
ECA15582

Make sure the bead stopper is
ti g htene d. A loose bead stopper
will cause the tire to slip off the
rim if tire pressure is too low.
 Make sure the valve stem is po-
sitione d strai ght. A tilte d valve
stem in dicates that the tire has
slippe d from its ori ginal position
on the rim. Rotate the tire so
that the valve stem is positione d
strai ght.
If the center tread depth reaches the
specified limit, if the tire has a nail or
glass fragments in it, or if the sidewall
is cracked, have a Yamaha dealer re-
place the tire immediately.
Tire information
This model is equipped with tube tires. Tires age, even if they have not been
used or have only been used occasion-
ally. Cracking of the tread and sidewall
rubber, sometimes accompanied by
carcass deformation, is an evidence of
ageing. Old and aged tires shall be
checked by tire specialists to ascertain
their suitability for further use.
WARNING
EWA10462
The front an
d rear tires shoul d b e of
the same make an d d esi gn, other-
wise the han dlin g characteristics of
the vehicle may be different, which
coul d lea d to an acci dent.
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha.
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 lea d to
loss of control.
1. Tire sidewall
2. Tire tread depth
Minimum tire trea d d epth (front an d
rear):
4.0 mm (0.16 in)
1
2
Front tire:Size:
70/100-17 40M (YZ85, YZ85K)
70/100-19 42M (YZ85LW,
YZ85LWK)
Manufacturer/model: DUNLOP/MX3SF
Rear tire:
Size:90/100-14 49M (YZ85, YZ85K)
90/100-16 52M (YZ85LW,
YZ85LWK)
Manufacturer/model: DUNLOP/MX3S
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Periodic maintenance an d a djustment
7-16
7

The replacement of all wheel-
and b rake-related parts, includ-
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 puncture d tu be. If unavoid -
a b le, however, patch the tu be
very carefully an d replace it as
soon as possi ble with a hi gh-
quality prod uct.
EAU48322
Spoke wheels
WARNING
EWA10611
The wheels on this mod el 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.
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Motorcycle care and stora ge
8-3
8
WARNING
EWA11132
Contaminants on the brakes or tires
can cause loss of control.  Make sure that there is no oil or
wax on the brakes or tires.
 If necessary, clean the brake
d iscs an d b rake linin gs with a
re gular brake disc cleaner or
acetone, an d wash the tires with
warm water an d a mil d d eter-
g ent. Before ri din g at hi gher
speed s, test the motorcycle’s
b rakin g performance an d cor-
nering b ehavior.
NOTICE
ECA10801
 Apply spray oil an d wax spar-
in gly an d make sure to wipe off
any excess.
 Never apply oil or wax to any
rubber an d plastic parts, but
treat them with a suitab le care
prod uct.
 Avoi d using abrasive polishin g
compoun ds as they will wear
away the paint.
TIP
Consult a Yamaha dealer for advice on
what products to use.
EAU41515
Stora ge
Short-term
Always store your motorcycle in a cool,
dry place and, if necessary, protect it
against dust with a porous cover. Be
sure the engine and the exhaust sys-
tem are cool before covering the mo-
torcycle.
NOTICE
ECA10811
 Storin g the motorcycle in a
poorly ventilate d room or cover-
in g it with a tarp, while it is still
wet, will allow water an d humi d-
ity to seep in an d cause rust.
 To prevent corrosion, avoi d
d amp cellars, sta bles (b ecause
of the presence of ammonia)
an d areas where stron g chemi-
cals are stored .
Long-term
Before storing your motorcycle for sev-
eral months: 1. Follow all the instructions in the “Care” section of this chapter.
2. For motorcycles equipped with a fuel cock that has an “OFF” posi-
tion: Turn the fuel cock lever to
“OFF”.
3. Drain the fuel tank and fuel lines, and the carburetor float chamber
by loosening the drain bolt; this
will prevent fuel deposits from
building up.
4. Perform the following steps to protect the cylinder, piston rings,
etc. from corrosion.a. Remove the spark plug cap and spark plug.
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Motorcycle care and stora ge
8-4
8 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. (This will
coat the cylinder wall with oil.)
e. Remove the spark plug cap from the spark plug, and then
install the spark plug and the
spark plug cap. WARNING! To
prevent damag e or injury
from sparkin g, make sure to
g roun d the spark plu g elec-
tro des while turnin g the en-
g ine over.
[EWA10952]
5. Lubricate all control cables and
the pivoting points of all levers and
brake pedal.
6. Check and, if necessary, correct the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
7. Cover the muffler outlet with a plastic bag to prevent moisture
from entering it.
TIP
Make any necessary repairs before
storing the motorcycle.
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