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D. Gently wind the prefilter in an absorbent cloth,
and squeeze out the excess oil.
5. Install the prefilter as follows:
A. Align the prefilter inside of the cover.
B. Align the prefilter cover to the housing.
C. Secure the cover to the housing with the screws.
Servicing the Air Filter—Models 68034
and 68035
1. Remove the screws that secure the cover to the air-filter
housing (Figure 17)
A
Figure 17
1. Air-filter housing
2. Remove the air filter from the housing as shown in
Figure 17.
3. Inspect the air filter and replace it if it is damaged,
excessively dirty, or saturated with oil or fuel.
4. Align the air filter inside of the cover.
5. Align the air filter cover to the housing.
6. Secure the cover housing with the screws.
B
1
2
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2. Air filter
Servicing the Air Filter—Model 68036
1. Open the latch of the air-filter cover (Figure 18).
A
1
2
C
1. Latch
2. Cover
2. Remove the air filter from the housing as shown in
Figure 18.
3. Remove the foam element from the paper element.
4. Inspect the elements and replace them if they are
damaged or excessively dirty.
Note: If the paper element is saturated with oil or
fuel, replace it.
5. Tap the paper element several times on a hard surface
to remove the dirt.
6. Clean the foam element in warm, soapy water or in
a nonflammable solvent.
Note: Do not use fuel to clean the foam element
because it could create a risk of fire or explosion.
7. Rinse and dry the foam element thoroughly.
8. Dip the foam element in clean engine oil, then squeeze
out the excess oil.
Note: Excess oil in the foam element restricts the air
flow through the element and may reach the paper
filter and clog it.
9. Wipe dirt from the housing and the cover with a moist
rag.
Note: Be careful to prevent dirt and debris from
entering the air duct leading to the carburetor.
15
B
D
Figure 18
3. Paper element
4. Foam element
3
4
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