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How to remove the spark arrestor
1. Remove the fl ange bolts from the muffl er cover and remove the
muffl er cover.
2. Remove the special screw from the spark arrestor and remove the
spark arrestor from the muffl er.
Clean the spark arrestor screen
Use a brush to remove carbon deposits from the spark arrestor
screen. Be careful to avoid damaging the screen.
The spark arrestor must be free of breaks and holes. Replace the
spark arrestor if it is damaged.
Install the spark arrestor, and muffl er protector in the reverse order of
disassembly.
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High Altitude Engine Operation
• Please have an authorized Robin America service dealer modify
this engine if it is to be run continuously above 5,000 feet (1,500
meters). Failure to do so, may result in poor engine performance,
spark plug fouling, hard starting, and increased emissions.
• Carburetor modifi cation by an authorized Robin America service
dealer will improve performance and allow that this engine meets
EPA (Environmental Protection Agency) and California ARB (Air
Resources Board) emission standards throughout its useful life.
• An engine converted for high altitudes can not be run at 5,000 feet
or lower. In doing so, the engine will overheat and cause serious
engine damage. Please have an authorized Robin America service
dealer restore high altitude modifi ed engines to the original factory
specifi cation before operating below 5,000 feet.
Spark Arrestor (Optional)
In a dry or wooded area, it is recommendable to use the engine with a
spark arrestor. Some areas require the use of a spark arrestor. Please
check your local laws and regulations before operating your engine.
The spark arrestor must be cleaned regularly to keep it functioning as
designed.
A clogged spark arrestor:
• Prevents the fl ow of exhaust gas
• Reduces engine output
• Increases fuel consumption
• Makes starting diffi cult
If the engine has been running, the muffl er and the spark arrestor will
be very hot. Allow the muffl er to cool before cleaning the spark arres-
tor.
Spark Arrestor Screen