2013 YAMAHA YZ85 lock

INSTRUMENT AND CONTROL FUNCTIONS
4-2
4
EAU41264
Brake lever The brake lever is located on the right
side of the handlebar. To apply the front
brake, pull the lever toward the throttle
grip.
The brake lever is equipped with a
brake lever position adjusting bolt. Ad-
just the distance between the brake le-
ver and the throttle 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 throttle grip, turn the
adjusting bolt in direction (a) to in-
crease 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. Brake lever position adjusting bolt
5. Distance between brake lever and throttle grip
143
(a)
(b)
2
5
Distance between the brake lever
and the throttle grip:Minimum (shortest):76 mm (2.99 in)
Standard: 95 mm (3.74 in)
Maximum (longest):
97 mm (3.82 in)
1. Brake pedal
U1SN81E0.book Page 2 Tuesday, June 12, 2012 3:17 PM

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. Container
Recommended 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
U1SN81E0.book Page 3 Tuesday, June 12, 2012 3:17 PM

INSTRUMENT AND CONTROL FUNCTIONS
4-5
4
wash 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”
U1SN81E0.book Page 5 Tuesday, June 12, 2012 3:17 PM

INSTRUMENT AND CONTROL FUNCTIONS
4-9
4
EAU51650
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. Lift the front wheel off the ground according to the procedure on
page 7-27.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.
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
U1SN81E0.book Page 9 Tuesday, June 12, 2012 3:17 PM

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 ASpring preload: Minimum (soft):Distance A = 218.5 mm (8.60 in)
Standard:YZ85(D) Distance A = 215.0 mm (8.46 in)
For Europe only: Distance A =
212.0 mm (8.35 in)
Standard:YZ85LW(D) 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
U1SN81E0.book Page 10 Tuesday, June 12, 2012 3:17 PM

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.
EAU41822
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
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).
1. Throttle grip free play
1. Locknut
2. Throttle grip free play adjusting nut
3. Rubber cover
2
3
(a)
(b)
1
U1SN81E0.book Page 15 Tuesday, June 12, 2012 3:17 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-18
7
EAU48373
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). To
decrease 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.1. Clutch lever free play
2. Locknut
3. Clutch lever free play adjusting bolt
4. Rubber cover
1
(a)
23
4
1. Locknut
2. Clutch lever free play adjusting nut
3. Rubber cover
1
2
3
(a)(b)
U1SN81E0.book Page 18 Tuesday, June 12, 2012 3:17 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-21
7Rear brake
WARNING
EWA15990
Improper maintenance can result in
loss of braking ability. Observe
these precautions:●
Insufficient brake fluid may al-
low air to enter the brake sys-
tem, reducing braking
performance.
●
Clean the filler cap before re-
moving. Use only DOT 4 brake
fluid from a sealed container.
●
Use only the specified brake flu-
id; otherwise, the rubber seals
may deteriorate, causing leak-
age.
●
Refill with the same type of
brake fluid. Adding a brake fluid
other than DOT 4 may result in a
harmful chemical reaction.
●
Be careful that water does not
enter the brake fluid reservoir
when refilling. Water will signifi-
cantly lower the boiling point of
the fluid and may result in vapor
lock.
NOTICE
ECA17640
Brake fluid may damage painted sur-
faces or plastic parts. Always clean
up spilled fluid immediately.As the brake pads wear, it is normal for
the brake fluid level to gradually go
down. A low brake fluid level may indi-
cate worn brake pads and/or brake sys-
tem leakage; therefore, be sure to
check the brake pads for wear and the
brake system for leakage. If the brake fluid level goes down suddenly, have a
Yamaha dealer check the cause before further riding.
1. Minimum level markSpecified brake fluid: DOT 4
U1SN81E0.book Page 21 Tuesday, June 12, 2012 3:17 PM