Periodic Maintenance Chart For The Emission Control System - Yamaha GCH I 237 Owner's Manual

Periodic maintenance and adjustment
ESU11462

Periodic maintenance chart for the emission control system

Items marked with an asterisk should be performed by a Yamaha dealer as they require spe-
cial tools, data and technical skills.
ITEM
Spark plugs
* Valve clearance
Crankcase breath-
*
er system
* Fuel filter
* Fuel line
* Idle speed
* Carburetors
* Exhaust system
42
REMARKS
• Check condition.
• Adjust gap and clean.
• Replace if necessary.
• Check and adjust valve clear-
ance when engine is cold.
• Check breather hose for
cracks or damage.
• Replace if necessary.
• Check condition.
• Replace if necessary.
• Check fuel hose for cracks or
damage.
• Replace if necessary.
• Check and adjust idle speed.
• Adjust synchronization.
• Adjust the jets.
• Check for leakage.
• Tighten or replace gasket if
necessary.
INITIAL EVERY
Seasonally
1 month
or
or 800 km
4000 km
(500 mi)
(2500 mi)
(40 hr)
(200 hr)
Every 40000 km (25000
mi)
Whenever operating
condition (eleva-
tion/temperature) is
changed.
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