Exhaust
89
The exhaust system is a frequently overlooked component of an engine. It is important to make sure the muffler
is in good condition and free of debris and/or insects.
NOTE: A blocked muffler will result in poor performance. If a muffler is completely blocked, the engine may not
start.
Summer engines
One of the main differences between the summer and the snow engines is the exhaust system. Because of this
they will be addressed separately.
Spark arrestor
The spark arrestor should be checked and/or cleaned
every month.
NOTE: The spark arrestor also serves to keep blockages
out of the exhaust system. Typical blockages
include insect nests built during the dormant sea-
son.
The spark arrestor can be inspected by shining a flash
light into the muffler. See Figure 8.1.
If The spark arrestor needs to be cleaned or replaced:
1. Remove the four screws that retain the muffler shield
using a 8mm wrench and lift it off of the engine. See
Figure 8.2.
Figure 8.1
Spark arrestor
Retaining screw
Figure 8.2
Muffler shield
Remove these
screws
CHAPTER 8: EXHAUST
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