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8-7INITIAL EVERY
month 1 3 6 6 12
ITEM ROUTINEWhichever
km 320 1200 2400 2400 4800 comes first
(mi) (200) (750) (1500) (1500) (3000)
hours 20 75 150 150 300
Transmission9Replace oil.2222
9Check coolant leakage.
Cooling system9Repair if necessary.22222
9Replace coolant every 24 months.
9Check condition.
Spark plug9Adjust gap and clean.22222
9Replace if necessary.
Air filter element9Clean. Every 20–40 hours.
9Replace if necessary. (More often in wet or dusty areas)
* Carburetor9Check idle speed / starter operation.
2222
9Adjust if necessary.
* Crankcase breather9Check breather hose for cracks or damage.
222
system9Replace if necessary.
9Check for leakage.
* Exhaust system9Retighten if necessary.222
9Replace gasket(s) if necessary.
* Fuel line9Check fuel hose for cracks or damage.
222
9Replace if necessary.
Throttle operation9Inspect and adjust free play if necessary.22222
EBU02622
PERIODIC MAINTENANCE/LUBRICATION
NOTE:
8For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.
8For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance intervals. However, keep in mind
that if the ATV isn’t used for a long period of time, the month maintenance intervals should be followed.
8Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills.
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8-47
6. Inspect the air filter element and replace it
if damaged.
7. Apply foam air filter oil to the air filter ele-
ment.
NOTE:
The air filter element should be wet but not drip-
ping.
8. Pull the air filter element over its frame,
and then install the lock plate by turning it.
9. Install the air filter element assembly.
10. Install the air filter case cover by hooking
the fasteners onto the air filter case.
11. Install the seat.
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10-2
Model YFZ350
Engine oil (2-cycle):
Type Yamalube 2-R, Castrol R30, A545, A747
Mixing ratio See page 5-15.
Transmission oil:
Type SAE10W30SE
Rcommended transmission oil classification: API Service SE, SF, SG type or higher
Quantity
Periodic oil change 1.5 L
Radiator:
(Including all routes) 1.5 L
Air filter: Wet type element
10
cC
In order to prevent clutch slippage (since the
engine oil also lubricates the clutch), do not
mix any chemical additives. Do not use oils
with a diesel specification of “CD” or oils of
a higher quality than specified. In addition,
do not use oils labeled “ENERGY CONSERV-
ING
II” or higher.