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20
MTF-041007C
TO ADJUST THE CARBURETOR
The carburetor is not adjustable. Engine performance
should not be affected at altitudes up to 7,000 feet. For
operation at higher elevations, contact your nearest autho-
rized service center.
IMPORTANT: Never tamper with the engine governor,
which is factory set for proper engine speed. Over-speed-
ing the engine above the factory high speed setting can be
dangerous. If the engine-governed high speed needs an
adjustment, contact an authorized service center. They
have the proper equipment and experience to make any
necessary adjustments.
TO ADJUST OR REPLACE THE SPARK PLUG
Check the spark plug every twenty-five (25) hours. Re-
place the spark plug if the electrodes are pitted or burned
or if the porcelain is cracked.
The spark plug is housed in the engine compartment under
the top cover and cannot be seen under normal condi-
tions.
1. Remove the top cover. See “How To Remove The Top
Cover”.
2. The spark plug and wire are now visible.
3. Remove the spark plug wire.
4. Clean the area around the spark plug base to prevent dirt
from entering the engine when the spark plug is removed.
5. Remove the spark plug.
6. Check the spark plug. If the spark plug is cracked, fouled
or dirty, it must be replaced .
7. Set the gap between the electrodes of the new spark plug
at 0.030 inch (Figure 19).
8. Install the spark plug in the cylinder head and firmly tight-
en. Recommended torque is 18 to 20 foot pounds.
Figure 19
.030” (0.76 mm) Gap