181-719-14
Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled
Page 15
III. Removal and Installation of
OH318EA Air Filters
1.
Remove wing nuts and air cleaner cover. See Figure 33.
2.
Remove foam filter from paper filter.
3.
Remove paper filter from base.
4.
Inspect filters for discoloration or dirt accumulation.
If either is present, see "I. Servicing Foam Filters"
and/or "II. Servicing Paper Filters" instructions on page
14. Afterward, continue reading instructions below.
5.
Clean inside of base and air cleaner cover thoroughly.
6.
Install paper filter into base.
7.
Install foam filter onto paper filter.
8.
Install air cleaner cover on base.
9.
Install wing nuts and tighten securely.
E. Anti-Icing Baffle
Some engines may be equipped with an anti-icing air
cleaner baffle that prevents ice from forming in the
carburetor when the engine is run at temperatures below
32°F (0°C).
Engines equipped with the baffle will have an opening
which draws warm air from the muffler into the air cleaner
housing. To work effectively, it is necessary for the baffle to
block cold air from entering the air cleaner.
NOTE
Be sure air cleaner cover is in correct “WINTER” or
“SUMMER” position before operation.
At Temperatures of 32°F (0°C) and Below
1.
Remove wing nuts from air cleaner cover.
See Figure 33.
2.
Remove air cleaner cover from base.
3.
Rotate air cleaner cover in “WINTER” position shown.
See Figure 34.
4.
Install air cleaner cover onto base.
NOTE
Be sure air cleaner cover is in correct “WINTER” position.
5. Install wing nuts and tighten securely.
At Temperatures Above 32°F (0°C)
1.
Remove wing nuts from air cleaner cover.
See Figure 33.
2.
Remove air cleaner cover from base.
3.
Rotate air cleaner cover in “SUMMER” position shown.
See Figure 34.
4.
Install air cleaner cover onto base.
NOTE
Be sure air cleaner cover is in correct “SUMMER” position.
5.
Install wing nuts and tighten securely.
Figure 33. Climate Guard Assembly
Figure 34. Air Cleaner Cover Positions
Climate
Guard
RUN
CHOKE
!
1. Wing Nuts
2. Air Cleaner Cover
3. Foam Filter
4. Paper Filter
5. Base
2
1
1
3
4
5
Climate
Guard
RUN
CHOKE
!
Climate
Guard
RUN
CHOKE
Climate
Guard
RUN
CHOKE
!!
1. Summer Position-Above 32°F (0°C)
2. Winter Position-Below 32°F (0°C)
2
1
