181-1277-14 Two-Cycle Engine • Horizontal/Vertical Crankshaft • Air-Cooled Page 9
A. Removing Debris from Engine
Before each use, remove all dirt and debris from the
following areas:
• Cooling Fins
• Air Intake Screen
• Air Inlets
• Gas Cap Air Vent Screw
• Gas Cap Air Vent
• Levers
• Linkage
Removing debris will facilitate adequate cooling, correct
engine speed and reduce the risk of fire. See Figure 19.
B. Muffler and Cylinder Exhaust Ports
The muffler and cylinder exhaust ports require cleaning
after every 50 hours of operation.
NOTE
For this maintenance procedure it is recommended that the
engine be taken to an Authorized Tecumseh Servicing
Dealer.
C. Spark Plug
Check spark plug yearly or every 50 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. (0.76mm) if necessary. See Figure 20.
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.
Figure 19. Debris Removal Areas
Figure 20. Resistor Spark Plug
I
+
1. Air Inlets
2. Air Intake Screen (Optional)
3. Air Vent
4. Muffler Guard
5. Cooling Fins
6. Levers and Linkages
6
5
4
3
1
2
3
1. .030 in. (0.76mm) Gap
2. Electrodes
3. Porcelain
1
2
3
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