Page 10
Four-Cycle Twin Cylinder Engine • Vertical Crankshaft • Air-Cooled
181-1203-14
C. Spark Plug
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 elec-
trodes are:
• Pitted
• Burned
• Fouled with deposits
4. Check electrode gap with wire feeler gauge and set
gap to .030 (0.76mm) 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 Tecumseh Servicing Dealer for 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-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.
II. Servicing Paper Filters
Paper filters cannot be cleaned and must be replaced once
a year or every 100 operating hours; more often if used in
extremely dusty conditions. Replacement filters are
available at an Authorized Tecumseh Servicing Dealer.
NOTE
DO NOT put oil on or clean a paper filter.
Figure 16. Spark Plug
Figure 17. Air Cleaner Components
1. .030 (0.76mm) Gap
2. Electrodes
3. Porcelain
1
2
3
1
1. Slots
2. Base
3. Studs
4. Paper Filter
5. Foam Pre-Filter
6. Wing Nuts
7. Tabs
8. Cover
7
3
2
4
5
6
8
