Yamaha TTR90(M), Owner'S Service Manual

Page: 158 / 287

4 - 6
ENG
CARBURETOR
EC464600
Float
1. Inspect:
●
Float 1
Damage
→
Replace.
ASSEMBLY AND INSTALLATION
Carburetor
1. Install:
●
Pilot air screw 1
Note the following installation points:
●
Screw in the pilot air screw until it is lightly
seated.
●
Back out it by the specified number of
turns.
Pilot air screw:
1-3/4 turns out
2. Install:
●
Throttle valve 1
●
Starter plunger 2
NOTE:
Align the slit
a
of the throttle valve with the tab
b
of the carburetor top.
FUEL LEVEL ADJUSTMENT
WARNING
Gasoline (fuel) and its vapors are highly
flammable and explosive. Keep away from
sparks, cigarettes, flames or other sources
of ignition.