2001 YAMAHA YFM660R oil

8-8
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-8.frameER
* It is recommended that these items be serviced by a Yamaha dealer.
** Lithium-soap-based grease
NOTE:
Brake fluid replacement:
1. When disassembling the master cylinder or caliper cylinder, replace the brake fluid. Normally
check the brake fluid level and add fluid as required.
2. On the inner parts of the master cylinder and caliper cylinder, replace the oil seals every two
years.
3. Replace the brake hoses every four years, or if cracked or damaged.
Wheels*• Check balance/damage/runout.
• Replace if necessary.
Wheel bearings*• Check bearing assembly for looseness/damage.
• Replace if damaged.
Steering system*• Check operation.
• Repair if damaged.
• Check toe-in.
• Adjust if necessary.
Upper and lower arm
pivot and steering
shaft*• Lubricate every 6 months.**
Rear arm pivot*• Lubricate every 6 months.**
Fittings and Fasteners*• Check all chassis fittings and fasteners.
• Correct if necessary.
ITEM ROUTINEINITIAL EVERY
1
month3
months6
months6
months1
year

8-17
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1. Engine oil tank
2. Engine oil filler cap
3. Maximum level mark
4. Minimum level mark
1. Réservoir d’huile de moteur
2. Bouchon de remplissage de l’huile de moteur
3. Repère de niveau maximum
4. Repère de niveau minimum
1. Depósito de aceite de motor
2. Tapa de relleno de aceite de motor
3. Marca de nivel máximo
4. Marca de nivel mínimo
EBU00812
Engine oil and oil filter cartridge
The engine oil level should be checked before
each ride. In addition, the oil must be changed
and the oil filter cartridge replaced at the inter-
vals specified in the periodic maintenance and
lubrication chart.
To check the engine oil level
1. Place the ATV on a level surface.
2. Start the engine, warm it up until the en-
gine oil has reached a normal tempera-
ture of 60˚C, let it continue to idle for ten
seconds, and then turn the engine off.
NOTE:
To achieve the proper engine oil temperature
for an accurate oil level reading, the engine
must have first completely cooled down, and
then warmed up again for several minutes to
normal operating temperature.
3. Wait a few minutes until the oil settles, re-
move the engine oil tank filler cap, wipe
the dipstick clean, insert it back into the
filler hole (without screwing it in), and
then remove it again to check the oil level.

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NOTE:
The engine oil should be between the mini-
mum and maximum level marks.
4. If the engine oil is below the minimum
level mark, add sufficient oil of the recom-
mended type to raise it to the correct lev-
el.
NOTE:
When adding oil, be careful not to overfill the
engine; the oil level rises faster starting from
the half-level-portion on the dipstick.
5. Insert the dipstick into the oil filler hole,
and then tighten the oil filler cap.
CAUTION:
Make sure that the oil filler cap is securely
tightened, otherwise oil may seep out when
the engine is running.

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1. Engine guard 2. Bolt (
× 6)
1. Protège-carter 2. Boulon (
× 6)
1. Protector del motor 2. Perno (
× 6)
To change the engine oil (with or without oil
filter cartridge replacement)
1. Remove the engine guard by removing
the bolts.
2. Start the engine, warm it up for several
minutes, and then turn it off.
3. Place an oil pan under the engine to col-
lect the used oil.

8-23
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1. Engine oil crankcase drain bolt
1. Boulon de vidange du carter d’huile de moteur
1. Perno de drenaje de aceite de motor del cárter
4. Remove the crankcase drain bolt.
5. Check the washer for damage, and re-
place it if necessary.
6. Remove the engine oil tank filler cap and
the drain bolt.
NOTE:
Skip steps 7–8 if the oil filter cartridge is not be-
ing replaced.
1. Engine oil tank drain bolt
1. Boulon de vidange du réservoir d’huile de moteur
1. Perno de drenaje de aceite de motor del motor

8-25
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1. Engine oil filter cartridge
2. Oil filter wrench
1. Cartouche du filtre à huile de moteur
2. Clé pour filtre à huile
1. Cartucho del filtro de aceite de motor
2. Llave para filtros de aceite
7. Remove the oil filter cartridge with an oil
filter wrench.
NOTE:
An oil filter wrench is available at a nearby
Yamaha dealer.
8. Install a new oil filter cartridge and tighten
it to the specified torque with an oil filter
wrench.
9. Install the crankcase engine oil drain bolt
and the engine oil tank drain bolt, then
tighten them to the specified torques. Tightening torque:
Oil filter cartridge:
17 Nm (1.7 m·kg)
Tightening torques:
Crankcase engine oil drain bolt:
30 Nm (3.0 m·kg)
Engine oil tank drain bolt:
25 Nm (2.5 m·kg)

8-27
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-8.frameEL
10. Add sufficient oil of the recommended
type to raise it to the correct level, and
then install and tighten the oil tank filler
cap.
CAUTION:
In order to prevent clutch slippage (since
the engine oil also lubricates the clutch),
do not mix any chemical additives with
the oil or use oils of a higher grade than
“CD”. In addition, do not use oils labeled
“ENERGY CONSERVING II” or higher.
Make sure that no foreign material enters
the crankcase. Recommended engine oil:
See page 10-2.

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11. Start the engine, and then let it idle for
several minutes while checking it for oil
leakage. If oil is leaking, immediately turn
the engine off and check for the cause.
12. Turn the engine off, and then check the oil
level and correct it if necessary.