6D55F11
4-12
1
2
3
4
5
6
7
8
9
NOTE:
• The float should be resting on the needle
valve
1
, but not compressing it.
• Take measurements at the float position
shown opposite its pivoted side.
Checking the Prime Start
1.
Measure the length of the Prime Start
plunger.
2.
Connect the Prime Start yellow (Y) leads
to a 12 V battery as shown.
3.
Measure the plunger length
a
after
applying power for the times indicated in
the following table. Replace if out of
specification.
4.
Measure the prime start resistance when
the prime start plunger length is 10.7 mm
(0.42 in).
Assembling the carburetor
1.
Install the main nozzle
1
, main jet
2
,
pilot jet
3
, and plug
4
to the carburetor
body as shown.
Float height
a
:
8.7–9.7 mm (0.34–0.38 in)
Prime Start plunger extended
length
a
(reference data):
10.7–15.4 mm (0.42–0.61 in)
Time (min)
Length (mm [in])
0
10.7 (0.42)
1
12.6 (0.50)
3
14.1 (0.56)
5
14.8 (0.58)
7
15.3 (0.60)
10
15.4 (0.61)
Prime Start resistance
(reference data):
Yellow (Y) – Yellow (Y)
17.7–18.7
Ω
at 20 °C (68 °F)
S6D54110
1
2
3
4
Carburetor
Summary of Contents for F2.5C
Page 1: ...F25C SERVICE MANUAL 6D5 28197 5F 11 290539 ...
Page 4: ......
Page 16: ...GEN INFO General information 1 11 6D55F11 MEMO ...
Page 27: ...6D55F11 2 10 1 2 3 4 5 6 7 8 9 Clamp bracket Maintenance specification ...
Page 112: ...POWR Power unit 5 51 6D55F11 MEMO ...
Page 136: ...LOWR Lower unit 6 23 6D55F11 Shimming 6 S6D56370 T3 A3 B3 42 5 T1 T2 24 0 24 0 B2 A1 A2 B1 ...
Page 173: ...6D55F11 TRBL SHTG 1 2 3 4 5 6 7 8 9 Troubleshooting Power unit 9 1 ...
Page 183: ......
Page 184: ...YAMAHA MOTOR CO LTD Printed in Japan Nov 2003 0 4 1 CR E Printed on recycled paper ...