2003 Yamaha Motorsports Big Bear 400 Owners Manual - Page 125
2003 Yamaha Motorsports Big Bear 400 Manual
Page 125 highlights
CAUTION: _ Never operate the engine with the air filter element removed. This will allow unfiltered air to enter, causing rapid engine wear and possible engine damage. Additionally, operation without the air filter element will affect carburetor jetting with subsequent poor performance and possible engine overheating. _ 8-16
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8-16
CAUTION:
_
Never operate the engine with the air filter
element removed. This will allow unfiltered
air to enter, causing rapid engine wear and
possible engine damage. Additionally, op-
eration without the air filter element will af-
fect carburetor jetting with subsequent
poor performance and possible engine
overheating.
_