9-19
9
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.
2. Remove the spark arrester by pulling it out of
the muffler.
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.
WARNING
EWB02342
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.
EBU23942
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,
1. Spark arrester
2. Tailpipe bolt
3. Nut
1
2
3
Tightening torque:
Tailpipe nut:
10 N·m (1.0 kgf·m, 7.4 lb·ft)
UBD315E0.book Page 19 Wednesday, January 15, 2020 1:18 PM