Kohler K91 Service Manual page 26

NOTE : Damaged , worn or loose air cleaner com­
ponents could allow u nfiltered air into the engine
causing premature wear and failure . Replace all
damaged or worn components .
OPTIONAL OIL BATH AIR CLEANER
If the engine has a n oil bath type air cleaner .
clean a n d service it after every
tion or more frequently if conditions warrant . Refer
to Figure 5-3 .
1. Remove the cove r . lift the element out of t he
bowl and drain the oil from the bowl .
2 . Thoroughly wash bowl and cover i n clean sol­
vent . Swish the e lement in the solvent and al­
low it to d ry.
NOTE : Do not use compressed air to d ry the ele­
ment . The filtering material could be damaged .
3 . Lightly re-oil the element with engine oil .
4 . Inspect base and cover gaskets . Replace if
damaged .
5 .
7 .
COOLIN G AIR I NTAKE SYSTEM
hours of opera­
25
Effective cooling of an air cooled engine depends
on a n u nobstructed flow of air over the cooling
fin s . Air is drawn into the COOling shroud by fins
located on the flywheel . The blower housing , cool­
ing shroud. air screen covering the flywheel and
cooling fins on the cylinder and cylinder head must
be kept clean and unobstructed at all times .
Never operate the engine with the blower housing
or cooling shroud-removed.
air flow over the cooling fins .
NOTE : Some engines use a plastic grass screen
and some use meta l . The two are not interchange­
able u nless other modifications are made to the
engine .
O I L L EV E L
Oil
Figure 5-3. Optional
I nstall base gasket and place filter on air horn.
Add engine oil to filter and fill to the OIL LEVEL
6.
mark.
Install filter element. cover gasket and cover.
Secure with wing nut finger tight only.
Bath Air Cleaner.
These devices direct
5 . 3