Installing The Carburetor - Yamaha 25BMH Service Manual

FUEL
CARBURETOR
4. Install:
• Packing
2
• Cover
• Screw
• Spring
• Pilot screw
CAUTION:
Do not cause damage to the tip of the pilot
screw by over-tightening it.
5. Adjust:
• Pilot screw
Adjusting steps
(1) Screw in the pilot screw until it is lightly
seated.
(2) Back out by the specified number of
turns.
Pilot screw turn-out
1 - 1/4 ± 3/4

INSTALLING THE CARBURETOR

1. Install:
• Gasket
• Carburetor
• O-ring
• Intake silencer
5
• Bolt
NOTE:
Insert the projection of choke lever
the choke knob hole
2. Measure:
• Engine idle speed
Out of specification → Adjust.
Engine idle speed
1,100 ± 50 r/min
4-11
1
3
4
5
1
2
3
4
7
.
E
6
into