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ESU04960
Safety is an obligation of the owner. Periodic inspection, adjustment, and lubrication will
keep your snowmobile in the safest and most efficient condition possible. The most impor-
tant points of snowmobile inspection, adjustment, and lubrication are explained on the fol-
lowing pages.
Maintenance, replacement, or repair of devices and systems related to emissions
control may be performed by any repair establishment or individual that is certified
(if applicable).
WARNING
@
If you are not familiar with maintenance work, have a Yamaha dealer do it for you.
@
PROPER PERIODIC MAINTENANCE OF YOUR SNOWMOBILE IS IMPORTANT IN
ORDER TO ENJOY LONG, PLEASURABLE SERVICE. ESPECIALLY IMPORTANT ARE
THE MAINTENANCE SERVICES RELATED TO EMISSIONS CONTROL. THESE SER-
VICES NOT ONLY ENSURE CLEANER AIR, BUT ARE ALSO VITAL TO PROPER
ENGINE OPERATION AND MAXIMUM PERFORMANCE. IN THE FOLLOWING PERI-
ODIC MAINTENANCE CHARTS, THE SERVICES RELATED TO EMISSIONS CONTROL
ARE GROUPED SEPARATELY. THESE SERVICES REQUIRE SPECIALIZED DATA,
KNOWLEDGE, AND EQUIPMENT. YAMAHA DEALERS ARE TRAINED AND EQUIPPED
TO PERFORM THESE PARTICULAR SERVICES.
ESU04970
Periodic maintenance chart for the emission control system
CD-31E
Item
Spark plugs
∗ Valve clearance
∗ Crankcase breather
system
∗ Fuel filter
∗ It is recommended that these items be serviced by a Yamaha dealer.
P ERIODIC MAINTENANCE
8 -
Remarks
Check condition.
Adjust gap and clean.
Replace if necessary.
Check clearance.
Adjust clearance when engine
is cold.
Check breather hose for
cracks or damage.
Replace if necessary.
Check condition.
Replace if necessary.
Pre-
1 month
operation
check
800 km
(Daily)
(500 mi)
(40 hr)
Every 40,000 km (25,000 mi)
8-1
Every
Initial
Seasonally
or
or
4,000 km
(2,500 mi)
(200 hr)
G
G
G
Page
8-7–8-8
8-11
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