Exhaust pipe must be periodically cleaned of carbon deposits
as follows:
1
Bolt M6x16 (3x)
2
Spark arrestor
1. Remove 3 bolts M6x16.
2. Start the engine and rev it up about 20 times. At the
same time, use a towel to plug the end of the
muffler, instantly generating pressure in the exhaust
system.
3. Let the exhaust pipe to cool.
4. Reinstall spark arrester and bolts.