2009 Yamaha Motorsports Big Bear 250 Owners Manual - Page 109

2009 Yamaha Motorsports Big Bear 250 Manual

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fold fittings for an air-tight seal. Tighten all fittings securely to avoid the possibility of unfiltered air entering the engine. ECB00460 10. Pull the sponge material over the air filter element. 11. Insert the air filter element assembly into the air filter case, and then install the air filter case cover by hooking the holders onto the air filter case. 12. Install the seat. TIP The air filter element should be cleaned every 20- 40 hours. It should be cleaned more often if the ATV is operated in extremely dusty areas. Each time the air filter element maintenance is performed, check the air inlet of the air filter case for obstructions. Check the air filter case rubber joint to the carburetor fittings and the rubber joint mani8-22 NOTICE G Make sure that the air filter element is properly seated in the air filter case. G Never operate the engine with the air filter element removed. This will allow unfiltered air to enter the engine, 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. EBU23882 8 Cleaning the spark arrester Be sure the exhaust pipe and muffler are cool before cleaning the spark arrester. 1. Remove the bolts.

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8-22
8
10.
Pull the sponge material over the air filter ele-
ment.
11.
Insert the air filter element assembly into the
air filter case, and then install the air filter case
cover by hooking the holders onto the air filter
case.
12.
Install the seat.
TIP
The air filter element should be cleaned every 20–
40 hours. It should be cleaned more often if the
ATV is operated in extremely dusty areas. Each
time the air filter element maintenance is per-
formed, check the air inlet of the air filter case for
obstructions. Check the air filter case rubber joint
to the carburetor fittings and the rubber joint mani-
fold fittings for an air-tight seal. Tighten all fittings
securely to avoid the possibility of unfiltered air en-
tering the engine.
NOTICE
ECB00460
●
Make sure that the air filter element is prop-
erly seated in the air filter case.
●
Never operate the engine with the air filter el-
ement removed. This will allow unfiltered air
to enter the engine, causing rapid engine
wear and possible engine damage. Addition-
ally, operation without the air filter element
will affect carburetor jetting with subsequent
poor performance and possible engine over-
heating.
EBU23882
Cleaning the spark arrester
Be sure the exhaust pipe and muffler are cool be-
fore cleaning the spark arrester.
1.
Remove the bolts.