Yamaha TT-R90(S) Owner's Service Manual page 146

SPARK ARRESTER CLEANING (For USA)
a
2
1
6. Install:
NOTE:
Apply the lithium soap base grease on the O-ring.
7. Install:
NOTE:
Apply the lithium soap base grease on the O-ring.
8. Install:
SPARK ARRESTER CLEANING (For USA)
Be sure the exhaust pipe and muffler are
G
cool before cleaning the spark arrester.
Do not start the engine when cleaning the
G
exhaust system.
1. Remove:
3
2. Remove:
3. Clean:
4. Install:
3 - 10
Tappet cover (intake side) 1
G
18 Nm (1.8 m · kg, 13 ft · lb)
O-ring 2
New
G
Tappet cover (exhaust side)
G
18 Nm (1.8 m · kg, 13 ft · lb)
O-ring
New
G
Spark plug
G
13 Nm (1.3 m · kg, 9.4 ft · lb)
Timing plug
G
7 Nm (0.7 m · kg, 5.1 ft · lb)
Crankshaft end cover
G
7 Nm (0.7 m · kg, 5.1 ft · lb)
Air filter case
G
Air scoop (right)
G
WARNING
Bolt (tailpipe) 1
G
Tailpipe 2
G
Pull the tailpipe out of the muffler.
Spark arrester
G
Use a wire brush to remove any carbon
deposits from the spark arrester portion
of the muffler body 3 inner surface.
Tap the tailpipe lightly and remove the
carbon deposits from the outside por-
tion a of the tailpipe.
Tailpipe
G
Insert the tailpipe into the muffler and
align the bolt hole.
Bolt (tailpipe)
G
7 Nm (0.7 m · kg, 5.1 ft · lb)
INSP
ADJ