2012 YAMAHA YZ85 Ratio

PERIODIC MAINTENANCE AND ADJUSTMENT
7-4
7
NO.ITEM ROUTINEAfter
break-in Every
race Every
third race Every
fifth race As
required
√
√
√
13
*Carburetor 
Check carburetor settings and for obstructions. √
 Adjust and clean. √
14 Spark plug 
Check condition.
 Clean and regap. √
 Replace. √
15 Drive chain 
Check chain slack, alignment and condition.
 Adjust and thoroughly lubricate chain with Yamaha
chain and cable lube or equivalent. √
√
√
√
√
 Replace. √
16 * *
Cooling system 
Check coolant level and for leakage. √
√
 Check hoses for cracks or damage. √
 Check radiator cap spring operation. √
 Change coolant. Every 2 years √
17 *Chassis fasteners 
Check all chassis fitting and fasteners.
 Correct or tighten if necessary. √
18 Air filter element 
Clean.
√
 Replace. √
19 *Frame Clean and check for damage. √
20 *Fuel line Clean and check for leakage. √√
U1SN80E0.book Page 4 Thursday, June 9, 2011 11:24 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-5
7
√ √
21 *Brakes 
Adjust lever position and pedal height.
 Lubricate pivot points.
 Check brake disk surface.
 Check fluid level and for leakage.
 Tighten brake disk bolts, caliper bolts, master cylinder
bolts and union bolts. √
 Replace brake pads. √
 Replace brake fluid. Every year√
22 *Front fork
Replace oil seals.

Replace fork oil.

Clean dust seal and lubricate with lithium-soap-based
grease.
Adjust if necessary.

Check operation and for oil leakage.
√
√√√
NO. ITEM ROUTINE
After
break-in Every
race Every
third race Every
fifth race As
required
√
√
√
23 *Shock absorber assem-
bly 
Check operation and adjust.
 Tighten if necessary.
 Lubricate with
lithium-soap-based grease
. √(After
washing the
motorcycle or riding in the rain)
U1SN80E0.book Page 5 Thursday, June 9, 2011 11:24 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-6
7
EAU42011
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.
U1SN80E0.book Page 6 Thursday, June 9, 2011 11:24 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-11
7
is not available, use distilled wa-
ter or soft tap water instead. Do
not use hard water or salt water
since it is harmful to the engine.
If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-
wise the cooling system will not
be protected against frost and
corrosion. If water has been
added to the coolant, have a
Yamaha dealer check the anti- freeze content of the coolant as
soon as possible, otherwise the
effectiveness of the coolant will
be reduced.
[ECA10472]
EAUM1315
To change the coolant1. Place the vehicle on a level sur- face and let the engine cool if nec-
essary.
2. Place a container under the engine to collect the used coolant.
3. Remove the coolant drain bolt and its gasket, and then the radiator
cap to drain the cooling system. WARNING! Never attempt to re-
move the radiator cap when the
engine is hot.
[EWA10381]
4. After the coolant is completely drained, thoroughly flush the cool-
ing system with clean tap water. 5. Install the coolant drain bolt and its
new gasket, and then tighten the
bolt to the specified torque.
6. Pour the recommended coolant into the radiator until it is full.
7. Install the radiator cap, start the engine, let it idle for several min-
utes, and then turn it off.
8. Remove the radiator cap to check the coolant level in the radiator. If
necessary, add sufficient coolant
until it reaches the bottom of the
radiator filler neck, and then install
the radiator cap.1. Coolant drain bolt
2. Gasket
1. Radiator cap
1
1
2
Tightening torque:Coolant drain bolt: 10 Nm (1.0 m ·kgf, 7.2 ft ·lbf)
Antifreeze/water mixture ratio: 1:1
Recommended antifreeze:
High-quality ethylene glycol anti-
freeze containing corrosion inhibi-
tors for aluminum engines
Coolant quantity: Radiator capacity (including all
routes):
0.54 L (0.57 US qt, 0.48 Imp.qt)
U1SN80E0.book Page 11 Thursday, June 9, 2011 11:24 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
U1SN80E0.book Page 15 Thursday, June 9, 2011 11:24 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.
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).
U1SN80E0.book Page 17 Thursday, June 9, 2011 11:24 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-19
7
braking performance, which may re-
sult in loss of control and an acci-
dent.
EAU44820
Checking the shift pedal The operation of the shift pedal should
be checked before each ride. If opera-
tion is not smooth, have a Yamaha
dealer check the vehicle.
EAU22392
Checking the front and rear
brake pads The front and rear brake pads must be
checked for wear at the intervals spec-
ified in the periodic maintenance and
lubrication chart.
EAU22410
Front brake pads
Each front brake pad is provided with a
wear indicator, which allows you to
check the brake pad wear without hav-
ing to disassemble the brake. To check
the brake pad wear, check the position
of the wear indicator while applying the
brake. If a brake pad has worn to the1. Brake pad wear indicator
U1SN80E0.book Page 19 Thursday, June 9, 2011 11:24 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-23
7
4. Make sure that the drive chain pull-
ers are in the same position, the
drive chain slack is correct, and
the drive chain moves smoothly.
EAU23016
Cleaning and lubricating the
drive chain The 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
ECA10583
The drive chain must be lubricated
after washing the motorcycle, riding
in the rain or riding in wet areas.1. Remove all dirt and mud from thedrive 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 and CableLube or a high-quality spray-type
drive chain lubricant on the entire
chain, making sure that all side
plates and rollers have been suffi-
ciently oiled.
EAU50800
Checking and lubricating the
cables The operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
housing of cables may result in in-
ternal rusting and cause interfer-
ence with cable movement. Replace
damaged cables as soon as possi-
ble to prevent unsafe conditions.[EWA10711]
Tightening torques:Locknut:
16 Nm (1.6 m ·kgf, 12 ft ·lbf)
Axle nut:
90 Nm (9.0 m ·kgf, 65 ft ·lbf)
Recommended lubricant:
Yamaha Chain and Cable Lube or 4-
stroke engine oil
U1SN80E0.book Page 23 Thursday, June 9, 2011 11:24 AM