Engine; Spark Arrester Cleaning - Yamaha YFM250XL(C) Service Manual

SPARK ARRESTER CLEANING

1

ENGINE

SPARK ARRESTER CLEANING
1.Clean:
Spark arrester
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Cleaning steps:
WARNING
Select a well-ventilated area free of com-
bustible materials.
Always let the exhaust system cool
before performing this operation.
Remove the purging bolt 1 .
Start the engine and rev it up approximately
twenty times while momentarily creating
exhaust system back pressure by blocking
the end of the muffler with a shop towel.
Stop the engine and allow the exhaust pipe
to cool.
Install the purging bolt 1 and tighten it.
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