Periodic Maintenance/Lubrication - Yamaha BIG BEAR PROFESSIONAL 400 Manual Del Propietário

EBU02621
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 intervals. How-
ever, keep in mind that if the ATV isn't used for a long period of time, the month maintenance intervals should be
followed.
_
ITEM
Valves*
Spark plug
Air filter element
Carburetor*
Crankcase breather
system*
Exhaust system*
Fuel line*
Engine oil
Transfer gear oil

PERIODIC MAINTENANCE/LUBRICATION

ROUTINE
• Check valve clearance.
• Adjust if necessary.
• Check condition.
• Adjust gap and clean.
• Replace if necessary.
• Clean.
• Replace if necessary.
• Check starter (choke) operation.
• Adjust engine idling speed.
• Check breather hose for cracks or damage.
• Replace if necessary.
• Check for leakage.
• Retighten if necessary.
• Replace gasket(s) if necessary.
• Check fuel hose for cracks or damage.
• Replace if necessary.
• Replace (Warm engine before draining).
month 1
Whichever
comes first
km 320
(mi) (200)
hours 20
8-7
INITIAL EVERY
3 6 6
1,200 2,400 2,400
(750) (1,500) (1,500)
75 150 150
Every 20–40 hours
(More often in wet or dusty areas.)
12
4,800
(3,000)
300