Periodic maintenance and adjustment
56
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
REMARKS
INITIAL
EVERY
PAGE
1 month
or 800 km
(500 mi)
(40 hr)
Seasonally
or
4000 km
(2500 mi)
(200 hr)
Spark plugs
• Check condition.
• Adjust gap and clean.
• Replace if necessary.
*
Valve clearance
• Check and adjust valve clear-
ance when engine is cold.
Every 40000 km (25000
mi)
*
Crankcase breath-
er system
• Check breather hose for
cracks or damage.
• Replace if necessary.
—
*
Fuel filter (RST90)
• Check condition.
• Replace if necessary.
—
*
Fuel line
• Check fuel hose for cracks or
damage.
• Replace if necessary.
—
*
Idle speed (RST90)
• Check and adjust idle speed.
*
Fuel
injection(RST90TF /
RST90TFL /
RST90TFY)
• Check synchronization.
• Adjust if necessary.
—
*
Carburetors
(RST90)
• Adjust synchronization.
—
• Adjust the jets.
Whenever operating
condition (eleva-
tion/temperature) is
changed.
*
Exhaust system
• Check for leakage.
• Tighten or replace gasket if
necessary.
—
U8JV70E0.book Page 56 Monday, April 6, 2015 11:49 AM