Yamaha YFM4FAR Service Manual page 90

CLEANING THE AIR FILTER
1.Remove:
Seat
G
Refer to "SEAT, CARRIERS, FENDERS
AND FUEL TANK".
2.Remove:
Air filter case cover 1
G
3.Remove:
Air filter element assembly 1
G
Air filter element cap
G
Air filter element
G
2 Air filter element cap
3 Air filter element
CAUTION:
Never operate the engine with the air filter
element removed. This will allow unfiltered
air to enter, causing rapid wear and
possible
operation without the filter element will
affect carburetor tuning with subsequent
poor performance and possible engine
overheating.
4.Check:
Air filter element
G
Damaged → Replace.
3 - 27
CHK
ADJ
engine damage. Additionally,