Periodic Maintenance Chart For The Emission Control System - Yamaha BIG BEAR 400 Owner's Manual

EBU15731

Periodic maintenance chart for the emission control system

NOTE:
_
G
For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.
G For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance in-
tervals. However, keep in mind that if the ATV isn't used for a long period of time, the month mainte-
nance intervals should be followed.
G
Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools,
data and technical skills.
_
ITEM
Valves*
Spark plug*
Carburetor*
Cylinder head cover
breather system*
Exhaust system*
Spark arrester
Fuel line*
ROUTINE
• Check valve clearance.
• Adjust if necessary.
• Check condition.
• Adjust gap and clean.
• Replace if necessary.
• Check and adjust idle speed/starter operation.
• Adjust if necessary.
• Check breather hose for cracks or damage.
• Replace if necessary.
• Check leakage.
• Tighten if necessary.
• Replace gasket if necessary.
• Clean.
• Check fuel hose for cracks or damage.
• Replace if necessary.
month 1
Whichever
comes first
km 320
(mi) (200)
hours 20
8-3
INITIAL EVERY
3 6 6
1,300 2,500 2,500
(800) (1,600) (1,600)
80 160 160
12
5,000
(3,200)
320