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181-1032-14 Four-Cycle Engine • Horizontal Crankshaft • Air-Cooled Page 11
B. Removing Debris from Engine
Before each use, remove grass clippings, dirt and debris
from the following areas:
• Levers and Linkage
• Cooling Fins
• Air Intake Screen
• Guards
Removing debris will facilitate adequate cooling, correct
engine speed and reduce the risk of fire. See Figure 23.
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 24.
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.
NOTE
Contact your Authorized Tecumseh Servicing Dealer for a
Tecumseh Air Cleaner.
I. Servicing Foam Pre-Filters
Inspect and clean or replace foam pre-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 pre-filter.
4. Replace foam pre-filter onto paper filter.
Figure 23. Debris Removal Areas
Figure 24. Resistor Spark Plug
1. Levers and Linkage
2. Cooling Fins
3. Air Intake Screen
1
2
3
1. .030 in. (0.76 mm) Gap
2. Electrodes
3. Porcelain
1
2
3