Yamaha YZ85(S)/LC, Owner'S Service Manual

Page: 212 / 506

4 - 8
ENG
CARBURETOR AND REED VALVE
HANDLING NOTE
CAUTION:
Do not disassemble the venturi block
1
because it will cause a drop in carburetor
performance.
5PA40110
EC463000
REMOVAL POINTS
EC463110
Throttle valve
1. Remove:
●
Throttle valve
1
●
Ring
2
●
Spring (throttle valve)
3
●
Mixing chamber top
4
●
Throttle cable
5
NOTE:
While compressing the spring (throttle valve),
disconnect the throttle cable.
5PA40120
INSPECTION
Pilot air screw
1. Remove:
●
Pilot air screw
1
NOTE:
To optimize the fuel flow at a small throttle
opening, each machine’s pilot air screw has
been individually set at the factory. Before
removing the pilot air screw, turn it in fully and
count the number of turns. Record this number
as the factory-set number of turns out.
Carburetor
1. Inspect:
●
Carburetor body
Contamination
→
Clean.
NOTE:
●
Use a petroleum based solvent for cleaning.
Blow out all passages with compressed air.
●
Never use a wire.
5PA40130
5PA40130