8-7
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-8.frameEL
EBU00262
PERIODIC MAINTENANCE/LUBRICATION
ITEM ROUTINEINITIAL EVERY
1
month3
months6
months6
months1
year
Valves*• Check valve clearance.
• Adjust if necessary.
Cooling system• Check coolant leakage.
• Repair if necessary.
• Replace coolant every 24 months.
Spark plug• Check condition.
• Adjust gap and clean.
• Replace if necessary.
Air filter element• Clean.
• Replace if necessary.Every 20~40 hours
(More often in wet or dusty areas.)
Carburetor*• Check and adjust idle speed/starter operation.
• Adjust if necessary.
Crankcase breather
system*• Check breather hose for cracks or damage.
• Replace if necessary.
Exhaust system*• Check for leakage.
• Retighten if necessary.
• Replace gasket if necessary.
Fuel line*• Check fuel hose for cracks or damage.
• Replace if necessary.
Engine oil• Replace (Warm engine before draining.)
Engine oil filter cartridge• Replace if necessary.
Drive chain• Check and adjust slack/alignment/clean/lube.
Brakes*• Check operation/fluid leakage/See NOTE Page 8-8.
• Correct if necessary.
Clutch*• Check operation.
• Adjust if necessary.
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-SPEC-E.frameEL
10-3
Radiator capacity (including all routes): 1.3 L
Air filter: Wet type element
Fuel:
Type
Tank capacity
Reserve amountRegular unleaded gasoline
12 L
2.6 L
Carburetor:
Type
× quantity
ManufacturerBSR33
× 2
MIKUNI
Spark plug:
Type/manufacturer
GapDPR8EA-9/NGK
0.8 ~ 0.9 mm
Clutch:
Type
OperationWet, Multiple-disc
Left hand operation
Transmission:
Primary Reduction System
Primary Reduction Ratio
Secondary Reduction System
Secondary Reduction Ratio
Transmission type
OperationSpur gear
71/34 (2.088)
Chain drive
40/13 (3.076)
Constant mesh, 5-speed forward, 1-speed reverse
Left foot operation MODEL YFM660R
