Page 10 Four-Cycle Twin Cylinder Engine • Vertical Crankshaft • Air-Cooled 181-1273-14
C. Spark Plug
NOTE
The Twin Cylinder Engines have two spark plug
connections.
Check both spark plugs 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
electrodes are:
•Pitted
• Burned
• Fouled with Deposits
4. Check electrode gap with wire feeler gauge and set
gap to—.030 (0.76 mm) if necessary. See Figure 16.
5. Install spark plug and tighten securely.
NOTE
A resistor spark plug must be used for replacement. Contact
your Authorized TecumsehPower Servicing Dealer for a
genuine replacement 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.
NOTES
ALWAYS inspect filter(s) for discoloration or dirt
accumulation. If either is present, see "I. Servicing Foam
Pre-Filter" instructions on this page and/or "II. Servicing
Paper Filters" instructions on page 11.
Contact your Authorized TecumsehPower Servicing Dealer
for a genuine replacement Air Cleaner.
I. Servicing Foam Pre-Filter
Clean foam pre-filter every 3 months or every 25 operating
hours. Clean daily if used in extremely dusty conditions.
After removing the pre-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 16. Resistor Spark Plug
Figure 17. Air Cleaner Components
1. .030 in. (0.76 mm) Gap
2. Electrodes
3. Porcelain
1
23
1
1. Slots
2. Base
3. Studs
4. Paper Filter
5. Foam Pre-Filter
6. Wing Nuts
7. Tabs
8. Cover
7
32
4
5
6
8
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