1.
Remove three M6x16 bolts, spring washers and flat washers.
2.
Start the engine and increase its speed about 20 times, and at
the same time block the end of the muffler with a towel, and
instantly generate the air pressure of the exhaust system.
3.
Allow the exhaust pipe to cool.
4.
Use a soft brush to remove carbon deposits from the spark
arrestor mesh.
5.
Reinstall the spark arrestor in reverse order and tighten fixing
screws.