Cleaning The Spark Arrester; Adjusting The Carburetor - Yamaha RAPTOR 90 2020 Owner's Manual

dusty areas. When servicing the air filter element,
be sure to check the air inlet of the air filter case
for obstructions.
EBU33942

Cleaning the spark arrester

Be sure the exhaust pipe and muffler are cool be-
fore cleaning the spark arrester.
1. Remove the tailpipe bolt and nut.
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1. Spark arrester
2. Tailpipe bolt
3. Nut
2. Remove the spark arrester by pulling it out of
the muffler.
2
1
3
3. Tap the spark arrester lightly, and then use a
wire brush to remove any carbon deposits.
4. Insert the spark arrester into the muffler and
align the bolt hole.
5. Install the tailpipe bolt and nut, and then tight-
en the nut to the specified torque.
Tightening torque:
Tailpipe nut:
10 N·m (1.0 kgf·m, 7.4 lb·ft)
EWB02342
WARNING
Always let the exhaust system cool prior to
touching exhaust components.
Do not start the engine with the spark arrester
removed. Sparks or exhaust particulate can
cause eye injury, burns, or start a fire.
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Adjusting the carburetor

The carburetor should be checked and, if neces-
sary, adjusted at the intervals specified in the pe-
riodic maintenance chart. The carburetor is an
important part of the engine and requires very so-
phisticated adjustment. Therefore, most carbure-
tor adjustments should be left to a Yamaha dealer,
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