Page 18
Four-Cycle Engine • Vertical Crankshaft • Air-Cooled
181-1215-14
B. Removing Debris from Engine
Before each use, remove the air cleaner cover. Discard
grass clippings, dirt and debris from the following areas:
• Levers and Linkage
• Cooling Fins
• Air Intake Screen
• Air Inlet
• Guards
Removing debris will insure adequate cooling, correct
engine speed and reduce the risk of fire. See Figure 46.
C. Spark Plug
Check spark plug yearly or every 100 operating hours.
1. Clean area around spark plug.
2. Remove and inspect spark plug.
3. Replace spark plug if porcelain is cracked or if elec-
trodes are:
• Pitted
• Burned
• Fouled with Deposits
4. Check electrode gap with wire feeler gauge and set
gap to—.030 in. (0.76
mm)
if necessary. See Figure 47.
5. Install spark plug and tighten securely.
NOTE
A resistor spark plug must be used for replacement. Contact
your Authorized Tecumseh Servicing Dealer for a
Tecumseh Resistor Spark Plug.
D. Cleaning/Replacing Air Cleaner
Your engine has an air cleaner which helps prevent
premature engine wear and failure. NEVER run engine
without complete air cleaner installed on engine. Your air
cleaner periodically needs to be cleaned or replaced. To do
this, you first need to determine the type of air cleaner on
your engine. Your engine will be equipped with one of the
following air cleaners; Type A, B, C, D or E. Follow
instructions for the air cleaner type that resembles your
model. See Figures 48 thru 52 starting on page 19.
Afterward, continue reading instructions below.
NOTES
ALWAYS inspect filter(s) for discoloration or dirt
accumulation. If either is present, see "I. Servicing Foam
Filters" instructions on this page, and/or see "II. Servicing
Paper Filters" instructions on page 19. Afterward, continue
reading instructions below.
Contact your Authorized Tecumseh Servicing Dealer for a
Tecumseh Air Cleaner.
I. Servicing Foam Filters
Clean foam filters every 3 months or every 25 operating
hours. Clean daily if used in extremely dusty conditions.
After removing the filter, follow these cleaning instructions
below:
1. Wash in warm water and detergent solution then press
(DO NOT twist) until all dirt is removed.
2. Rinse thoroughly until water is clear.
3. Wrap in a clean cloth and press (DO NOT twist) until
completely dry.
NOTE
DO NOT oil foam filter.
4. Install foam filter.
NOTE
Proceed with installation instructions for the air cleaner type
that resembles your model.
Figure 46. Debris Removal Locations
Figure 47. Resistor Spark Plug
1. Cooling Fins
2. Air Intake Screen
3. Levers and Linkage
1
2
3
1. .030 in. (0.76mm) Gap
2. Electrodes
3. Porcelain
1
2
3
