2011 YAMAHA YZ85 lock

INSTRUMENT AND CONTROL FUNCTIONS
4-2
4
EAU41262
Brake lever The brake lever is located at the right
handlebar grip. To apply the front
brake, pull the lever toward the handle-
bar grip.
The brake lever is equipped with a po-
sition adjusting bolt. Adjust the distance
between the brake lever and the han-
dlebar grip as follows.
1. Slide the rubber cover toward the
end of the brake lever.
2. Loosen the locknut.3. While holding the lever pushed
away from the handlebar grip, turn
the adjusting bolt in direction (a) to
increase the distance, and in direc-
tion (b) to decrease it.
4. Tighten the locknut.
5. Slide the rubber cover to its origi-
nal position.
EAU12941
Brake pedal The brake pedal is on the right side of
the motorcycle. To apply the rear
brake, press down on the brake pedal.
1. Rubber cover
2. Brake lever
3. Locknut
4. Adjusting bolt
5. Distance between brake lever and handlebar
grip
143 (a)
(b)
2
5
Distance between the brake lever
and the handlebar grip:
Minimum (shortest):
76 mm (2.99 in)
Standard:
95 mm (3.74 in)
Maximum (longest):
97 mm (3.82 in)
1. Brake pedal
U5PA89E0.book Page 2 Tuesday, June 15, 2010 10:34 AM

INSTRUMENT AND CONTROL FUNCTIONS
4-3
4
EAU13182
Fuel tank cap To remove the fuel tank cap, turn it
counterclockwise, and then pull it off.
To install the fuel tank cap, insert it into
the tank opening, and then turn it clock-
wise.
WARNING
EWA11091
Make sure that the fuel tank cap is
properly closed after filling fuel.
Leaking fuel is a fire hazard.
EAU41833
Fuel This motorcycle has been designed to
use a premixed fuel of gasoline and 2-
stroke engine oil. Always mix the gaso-
line and oil in a clean container before
filling the fuel tank.NOTICE
ECA15601
Always use fresh gasoline, and fill
the fuel tank with a fresh mix just be-
fore riding. Do not use premixed fuel
that is more than a few hours old.Mixing gasoline and 2-stroke engine
oil
Pour 2-stroke engine oil into a clean
container, and then add gasoline. To
mix the fuel thoroughly, shake the con-
tainer from side to side.
NOTICE
ECA15590
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the piston rings as well as to
the exhaust system.
1. Fuel tank cap
1. 2-stroke engine oil
2. Gasoline
3. ContainerRecommended fuel:
Premium unleaded gasoline only
Recommended 2-stroke engine oil:
See page 9-1.
Fuel tank capacity:
5.0 L (1.32 US gal, 1.10 Imp.gal)
Mixing ratios (gasoline to oil):
Break-in period: 15:1
After break-in: 30:1
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INSTRUMENT AND CONTROL FUNCTIONS
4-5
4wash with soap and water. If gaso-
line spills on your clothing, change
your clothes.
EAU41360
Fuel tank breather hose Before operating the motorcycle:

Check the fuel tank breather hose
connection.


Check the fuel tank breather hose
for cracks or damage, and replace
it if damaged.


Make sure that the end of the fuel
tank breather hose is not blocked,
and clean it if necessary.
TIPIf the fuel tank breather hose falls out,
reinstall it on the fuel tank cap with the
arrow mark on the one-way valve point-
ed downward as shown.
EAU41280
Fuel cock The fuel cock supplies fuel from the
tank to the carburetor while filtering it al-
so.
The fuel cock has two positions:
OFF
With the lever in this position, fuel will
not flow. Always return the lever to this
position when the engine is not running.
1. Fuel tank breather hose
2. One-way valve
1. Arrow mark positioned over “OFF”
U5PA89E0.book Page 5 Tuesday, June 15, 2010 10:34 AM

INSTRUMENT AND CONTROL FUNCTIONS
4-9
4
EAU14792
Front fork bleeding
WARNING
EWA10200
Always bleed both fork legs, other-
wise poor handling and loss of sta-
bility 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. Elevate the front wheel by placing
a suitable stand under the engine.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.
EAU41333
Adjusting the shock absorber
assembly This shock absorber assembly is
equipped with a spring preload adjust-
ing nut, a rebound damping force ad-
justing screw and a compression
damping force adjusting screw.NOTICE
ECA10101
To avoid damaging the mechanism,
do not attempt to turn beyond the
maximum or minimum settings.Spring preload
Adjust the spring preload as follows.
1. Loosen the locknut.
2. To increase the spring preload and
thereby harden the suspension,
turn the adjusting nut in direction
(a). To decrease the spring pre-
load and thereby soften the sus-
pension, turn the adjusting nut in
direction (b).
1. Bleed screw
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INSTRUMENT AND CONTROL FUNCTIONS
4-10
4


A special wrench can be ob-
tained at a Yamaha dealer to
make this adjustment.


The spring preload setting is
determined by measuring dis-
tance A, shown in the illustra-
tion. The longer distance A is,
the lower the spring preload;
the shorter distance A is, the
higher the spring preload.
With each complete turn of
the adjusting nut, distance A
is changed by 1.5 mm (0.06
in).3. Tighten the locknut to the specified
torque. NOTICE: Always tighten
the locknut against the adjust-
ing nut, and then tighten the
locknut to the specified torque.
[ECA10121]
Rebound damping force
To increase the rebound damping force
and thereby harden the rebound damp-
ing, turn the adjusting screw in direction
(a). To decrease the rebound damping
force and thereby soften the rebound
damping, turn the adjusting screw in di-
rection (b).
1. Locknut
2. Spring preload adjusting nut
1. Distance A
Spring preload:
Minimum (soft):
Distance A = 218.5 mm (8.60 in)
Standard:YZ85(A)
Distance A = 215.0 mm (8.46 in)
For Europe only: Distance A =
212.0 mm (8.35 in)
Standard:YZ85LW(A)
Distance A = 207.0 mm (8.15 in)
For Europe only: Distance A =
212.0 mm (8.35 in)
Maximum (hard):
Distance A = 202.5 mm (7.97 in)
Tightening torque:
Locknut:
35 Nm (3.5 m·kgf, 25 ft·lbf)
1. Rebound damping force adjusting screw
U5PA89E0.book Page 10 Tuesday, June 15, 2010 10:34 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-15
7
EAU48432
Adjusting the throttle grip free
play The throttle grip free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
inner edge of the throttle grip. Periodi-
cally check the throttle grip free play
and, if necessary, adjust it as follows.TIPThe engine idling speed must be cor-
rectly adjusted before checking and ad-
justing the throttle grip free play.1. Slide the rubber cover back.
2. Loosen the locknut.3. To increase the throttle grip free
play, turn the adjusting nut in direc-
tion (a). To decrease the throttle
grip free play, turn the adjusting
nut in direction (b).
4. Tighten the locknut and then slide
the rubber cover to its original po-
sition.
EAU41821
Tires To maximize the performance, durabil-
ity, and safe operation of your motorcy-
cle, note the following points regarding
the specified tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING
EWA14381
Operation of this vehicle with im-
proper tire pressure may cause se-
vere injury or death from loss of
control.

The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).


The tire air pressure must be ad-
justed in accordance with the
weight of the rider, the riding
speed, and the riding condi-
tions.
1. Throttle grip free play
1. Locknut
2. Throttle grip free play adjusting nut
3. Rubber cover
2
3
(a)
(b)
1
U5PA89E0.book Page 15 Tuesday, June 15, 2010 10:34 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-17
7
WARNING
EWA14390


Have a Yamaha dealer replace
excessively worn tires. Operat-
ing the motorcycle with exces-
sively worn tires decreases
riding stability and can lead to
loss of control.


The replacement of all wheel-
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience.


It is not recommended to patch
a punctured tube. If unavoid-
able, however, patch the tube
very carefully and replace it as
soon as possible with a high-
quality product.
EAU48321
Spoke wheels
WARNING
EWA10610
The wheels on this model are not de-
signed for use with tubeless tires.
Do not attempt to use tubeless tires
on this model.To maximize the performance, durabil-
ity, and safe operation of your motorcy-
cle, note the following points regarding
the specified wheels.

The wheel rims should be checked
for cracks, bends, warpage or oth-
er damage and the spokes for
looseness or damage before each
ride. If any damage is found, have
a Yamaha dealer replace the
wheel. Do not attempt even the
smallest repair to the wheel. A de-
formed 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.
EAU48372
Adjusting the clutch lever free
play The clutch lever free play should mea-
sure 10.0–15.0 mm (0.39–0.59 in) as
shown. Periodically check the clutch le-
ver free play and, if necessary, adjust it
as follows.
1. Slide the rubber cover back at the
clutch lever.
2. Loosen the locknut.
3. To increase the clutch lever free
play, turn the clutch lever free play
adjusting bolt in direction (a). To1. Clutch lever free play
2. Locknut (clutch lever)
3. Clutch lever free play adjusting bolt
4. Rubber cover
1
(a) 23
4
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-18
7decrease the clutch lever free play,
turn the adjusting bolt in direction
(b).
TIPIf the specified clutch lever free play
could be obtained as described above,
skip steps 4–7.4. Fully turn the adjusting bolt in di-
rection (a) to loosen the clutch ca-
ble.
5. Slide the rubber cover back further
down the clutch cable, and then
loosen the locknut.6. To increase the clutch lever free
play, turn the clutch lever free play
adjusting nut in direction (a). To
decrease the clutch lever free play,
turn the adjusting nut in direction
(b).
7. Tighten the locknut at the clutch
cable, and then slide the rubber
cover to its original position.
8. Tighten the locknut at the clutch le-
ver, and then slide the rubber cov-
er to its original position.
EAU37913
Checking the brake lever free
play There should be no free play at the
brake lever end. If there is free play,
have a Yamaha dealer inspect the
brake system.
WARNING
EWA14211
A soft or spongy feeling in the brake
lever can indicate the presence of air
in the hydraulic system. If there is air
in the hydraulic system, have a
Yamaha dealer bleed the system be-
fore operating the vehicle. Air in the
hydraulic system will diminish the
1. Locknut (clutch cable)
2. Clutch lever free play adjusting nut (clutch
cable)
3. Rubber cover
1
2
3
(a)(b)
1. No brake lever free play
U5PA89E0.book Page 18 Tuesday, June 15, 2010 10:34 AM