Air Filter - Yamaha EF4000DFW Owner's Manual

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Air filter

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1. Remove the screws, and then remove the air filter
case cover.
2. Remove the foam element.
1 Screw
2 Air filter case cover
3 Foam element
3. Wash the foam element in solvent and dry it.
Never use solvent while smoking or in the vicinity
of an open flame.
4. Oil the foam element and squeeze out excess oil.
The foam element should be wet but not dripping.
Recommended oil:
710-037a
NOTICE
Do not wring out the foam element when squeez-
ing it. This could cause it to tear.
5. Insert the foam element into the air filter case.
TIP
Be sure the foam element sealing surface matches the
air filter case so there is no air leak.
NOTICE
The engine should never run without the foam ele-
ment; excessive piston and cylinder wear may
result.
6. Install the air filter case cover and tighten the
screws.
WARNING
Foam-air-filter oil or engine oil (See page 25)
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