Yamaha YJ50RAP Service Manual page 49

PERIODIC MAINTENANCE AND LUBRICATION
NOTE:
The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
NOTE:
From 9,000 km (6,000 mi) or 18 months, repeat the maintenance intervals starting from 3,000 km
(2,000 mi) or 6 months.
3 - 2
CHK
ADJ
EAU00479
EAU03903