2009 YAMAHA YFM90R recommended oil

9
Make sure that operation is smooth, and check cable free play.Lubricate cable and lever housing if necessary.
Control cablesMake sure that operation is smooth. Lubricate if necessary. 8-27
Wheels and tiresCheck wheel condition, and replace if damaged.Check tire condition and tread depth. Replace if necessary.Check air pressure. Correct if necessary. 5-4, 5-5, 5-6
Brake leversMake sure that operation is smooth. Lubricate lever pivoting points
if necessary. 8-27
Chassis fastenersMake sure that all nuts, bolts and screws are properly tightened. 5-7
Instruments and switchesCheck operation, and correct if necessary. 5-7
2
5-2
9
Throttle lever 5-4, 8-21
5
PAGE
ROUTINE
METIT
Fuel
Check fuel line for leakage. Correct if necessary . 4-8, 5-3Check A TV for oil leakage. Correct if necessary .5-3, 8-11
Final transmission oil
5-3, 8-14
Check ATV for oil leakage. Correct if necessary.
Front brake
Check operation, and correct if necessary.Lubricate cable if necessary .Check lever free play , and adjust if necessary. 5-3, 8-22, 8-23
Engine oil
Check fuel level in fuel tank, and add recommended fuel if neces-
sary.Check brake pads for wear, and replace if necessary.
Check brake fluid level in reservoir, and add recommended brake fluid to specified level if necessary.
Check hydraulic system for leakage. Correct if necessary. Check operation. If soft or spongy, have Yamaha dealer bleed
hydraulic system.
Rear brake 5-3, 8-25, 8-26
Check oil level in engine, and add recommended oil to specified
level if necessary.

5-3
FuelMake sure that there is sufficient fuel in the tank.
(See page 4-8.)
Engine oilMake sure that the engine oil is at the specified lev-
el. Add oil as necessary. (See page 8-11.)
Final transmission oilMake sure that the final transmission oil is at the
specified level. Add oil as necessary.
(See page 8-14.)Front and rear brakesRecommended brake fluid:
DOT4
3
Brake fluid leakage
Check to see if any brake fluid is leaking out of the
pipe joint or brake fluid reservoir. Apply the brake
firmly for one minute. If there is any leakage, have a
Yamaha dealer check the brake system.Brake leversCheck for correct free play in the brake levers. If
the free play is incorrect, adjust it. (See pages
8-23 and 8-26.)Check operation of the levers. They should
move smoothly and there should be a firm feel-
ATV checked by a Yamaha dealer.
6
Brake fluid level
Check the brake fluid level. Add fluid if necessary.
(See page 8-25.)
15
WARNING
Do not overfill the fuel tank. Fuel expands
when it heats up. If the fuel tank is overfilled,
fuel could spill out due to heat from the en-
gine or the sun.Be careful not to spill fuel, especially on the
engine or exhaust pipe which can cause a
fire and severe injury. Wipe up any spilled
fuel immediately.Do not refuel right after the engine has been
running and is still very hot.Be sure the fuel tank cap is closed securely.
ing when the brakes are applied. If not, have the

8-13
8
7. Add the specified amount of the recommend-ed engine oil, and then install and tighten the
engine oil filler cap.
Tightening torque:
Engine oil drain bolt:8 Nm (0.8m·kgf, 5.8 ft·lbf)
Recommended oil: See page 10-1.
Oil quantity: 0.8 L (0.84 US qt) (0.70 Imp.qt)N O T I C EDo not mix any chemical additives. Do
not use oils with a diesel specification
of "CD" or oils of a higher quality than
sp eci fi ed . I n ad d i ti o n , d o n o t u se o i ls l ab el e d " E N E R G Y C O N S E R V I N G I I " o r
higher.the crankcase.
8. Start the engine, and then let it idle for severalMake sure that no foreign material enters minutes while checking it for oil leakage. If oil
is leaking, immediately turn the engine off and
check for the cause.
9. Turn the engine off, wait at least ten minutes, and then check the oil level and correct it if
necessary.

8-15
8
Tightening torque:Final transmission oil drain bolt:15 Nm (1.5 m·kgf, 10.8 ft·lbf)5. Add the specified amount of the recommend- ed final transmission oil, and then check the
oil level.N O T I C E Be sure no foreign material enters the final
transmission case.
6. Install and tighten the oil filler cap.
7. Check the final transmission case for oil leakage. If oil is leaking, check for the cause.
Recommended final transmission oil:
See page 10-1.
Oil quantity: 0.30 L (0.32 US qt) (0.27 Imp.qt)
Cleaning the air filter element The air filter element should be cleaned at the in-
tervals specified in the periodic maintenance and
lubrication chart. Clean the air filter element more
frequently if you are riding in unusually wet or dusty
areas.TIPThere are check hoses at the bottom of the air filter
case. If dust or water collects in these hoses, empty1. Air filter case check hose (left)
1
them and clean the air filter element and air filter
case.

Changing the rear brake fluidChecking the rear brake lever free play
The brake lever free play must be checked at the
intervals specified in the periodic maintenance and
lubrication chart. The brake lever free play should
measure 0 – 1.5 mm (0 – 0.06 in) as shown. If
the free play is incorrect, have a Yamaha dealer
check the brake system.
1
LOWER
1
8-26
8
Recommended brake fluid:
DOT4
1. Brake lever free play
1. Minimum level mark
Have a Yamaha dealer change the rear brake fluid
at the intervals specified in the TIP after the periodic
maintenance and lubrication 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.

8-27
Checking and lubricating the cables The operation and the condition of all control ca-
bles should be checked before each ride, and the
cables and cable ends should be lubricated if nec-
essary. If a cable is damaged or does not move
smoothly, have a Yamaha dealer check or replace
it.
Checking and lubricating the front and
rear brake levers The operation of the front and rear brake levers
should be checked before each ride, and the lever
pivots should be lubricated if necessary.Recommended lubricant:
Engine oil
8
WARNING
Operating with improperly serviced or adjust-
ed brakes could cause loss of braking ability,
which could lead to an accident.
After servicing:Make sure the brakes operate smoothly and
that the free play is correct.Make sure the brakes do not drag.Make sure the brakes are not spongy. All air
must be bled from the brake system.
Replacement of brake components requires
professional knowledge. These proceduresshould be performed by a Yamaha dealer.
WARNING
Inspect cables frequently and replace if dam-
aged. Corrosion can result when the cable
sheaths become damaged, and cables can
also become frayed or kinked, which could re-
strict the operation of controls and lead to anaccident or injury.

8-28
8
Checking the wheel hub bearings The front and rear wheel hub bearings must be
checked at the intervals specified in the periodic
maintenance and lubrication chart. If there is play
in a wheel hub or if a wheel does not turn smoothly,
have a Yamaha dealer check the wheel hub bearings.1. Lever pivot
BatteryT h i s m o d e l i s e q u i p p e d w i t h a V R L A ( V a l v e
Regulated Lead Acid) battery. There is no need to
check the electrolyte or to add distilled water.
However, the battery lead connections need to be
checked and, if necessary, tightened.
Recommended lubricant:Front brake lever: Lithium-soap-based grease
N O T I C E Never attempt to remove the battery cell seals,
as this would permanently damage the battery.
1
WARNING
Battery electrolyte is poisonous and danger-
ous, as it contains sulfuric acid, which can
cause severe burns. Avoid contact with skin,
eyes or clothing. Always shield your eyes
when working near batteries.
Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten egg
or vegetable oil. Call a physician immediately.
Rear brake lever:
Silicone grease

10-1
10
SPECIFICATIONS
Engine:Engine type: Forced air cooled 4-stroke
Cylinder arrangement: Single cylinder
Displacement: 88 cm (5.37 cu.in)
3
Bore × stroke: 47.0 × 51.0 mm (1.85 x 2.0 in) Compression ratio:
Starting system: Electric starter & kickstarter
Lubrication system: Wet sump 10.2 : 1
Engine oil:Type:SAE10W-40 or SAE20W-50
Recommended engine oil grade: API service SG type or higher, JASO standard MA0 10 30
507090
110130 F
SAE 10W-40
SAE 5W-30
-20
-10 0 102030 40 50 C
SAE 20W-50
Dimensions:Overall length:
1490 mm (58.7 in)
Overall width: 885 mm (34.8 in)
Overall height: 910 mm (35.8 in)
Seat height: 654 mm (25.7 in)
Wheelbase: 1010 mm (39.8 in)
Ground clearance: 100 mm (3.9 in)
Minimum turning radius: 2900 mm (114 in)Weight:With oil and fuel: 120.0 kg (264 lb)