Yamaha F6BMH User Manual

CARBURETOR
ASSEMBLING THE CARBURETOR
1. Install:
 Needle valve 3
 Float 1
 Float pin 2
NOTE:
 When setting the float 1 into the
carburetor body, hook the needle valve 3
into the float 1 and insert the needle
valve seat.
 Tap float pin 2 in the direction of arrow a
of carburetor body 4 and with a pin to
install.
 After installation,make sure that the float
1 operates smoothly.
2. Measure:
 Float hight
b
Out of specification  Replace.
NOTE:
 Make sure to tilt the carburetor body
clockwise 45° for needle valve with spring
no load, when measuring the float height
b
.
 Take measurement at the side end of the
float, as shown.
ADJUSTING THE CARBURETOR
Adjust:
 Pilot screw
Refer to “ADJUSTING THE ENGINE
IDLING SPEED” on page 3-10.
Float height
b
:
19.0 - 20.0 mm (0.75 - 0.79 in)
4-13

Yamaha F6BMH Specifications

General

Max Output	6 hp
Starting System	Manual
Gear Ratio	2.08:1
Fuel Induction System	Carburetor
Ignition System	CDI
Lubrication	Wet Sump
Oil Injection	No
Engine Type	4-Stroke, SOHC
Weight	27 kg
Prop Shaft Horsepower	6 hp
Full Throttle RPM Range	5, 000 - 6, 000 rpm
Shaft Length	15 in
Steering	Tiller
Full Throttle Operating Range	5, 000 - 6, 000 rpm