1G-21 Fuel System:
Float Height Inspection and Adjustment
B827H11706031
Inspect and adjust the float height in the following
procedures:
1) Remove the carburetor assembly. Refer to
“Carburetor Assembly Removal and Installation
(Page 1G-17)”.
2) Remove the float chamber body. Refer to
“Carburetor Disassembly (Page 1G-17)”.
3) To check the float height, tilt the carburetor as
shown.
4) Measure the float height “a” while the float arm is just
contacting the needle valve using vernier calipers.
Bend the tongue “A” as necessary to bring the float
height “a” to the specified level.
Special tool
: 09900–20102 (Vernier calipers (1/20 mm,
200 mm))
Float height “a”
17.0
±
1.0 mm (0.67
±
0.04 in)
5) Reinstall the float chamber body. Refer to
“Carburetor Assembly (Page 1G-20)”.
6) Reinstall the carburetor assembly. Refer to
“Carburetor Assembly Removal and Installation
(Page 1G-17)”.
Carburetor Inspection and Cleaning
B827H11706032
Refer to “Carburetor Assembly (Page 1G-20)” and
“Carburetor Disassembly (Page 1G-17)”.
Carburetor Parts
Check the following items for any damage or clogging.
If they are clogged, clean the fuel passage.
• Slow jet
• Main jet
• Main air jet
• Slow air jet
• Needle jet holder air bleeding holes
• Float
• Jet needle
• Valve seat
• Piston valve
• Starter (enricher) jet
• O-rings
• Throttle valve
• Diaphragm
• Pilot outlet and by-pass ports
Needle Valve
Check the needle valve for damage or worn.
If foreign matter is caught between the valve seat and
the needle valve, the gasoline will continue flowing and
overflow. If the valve seat and needle valve are worn
beyond the permissible limits, similar trouble will occur.
Conversely, if the needle valve sticks, the gasoline will
not flow into the float chamber. Clean the float chamber
and float parts with gasoline. If the needle valve is worn,
as shown in the illustration, replace it along with a new
valve seat.
Throttle Valve
Check the throttle valve moves smoothly from full open
to full close. If it does not smoothly, clean the carburetor.
“ a ”
I827H1170014-01
“A”
I827H1170015-01
CORRECT
INCORRECT
I649G1170060-02
Summary of Contents for LT-A400
Page 1: ...Printed in Japan K8 9 9 5 0 0 4 3 0 7 0 0 1 E K8 ...
Page 4: ......
Page 66: ...0C 14 Service Data ...
Page 165: ...Engine Lubrication System 1E 18 09930 40113 Rotor holder Page 1E 7 Page 1E 8 ...
Page 232: ...1K 5 Exhaust System ...
Page 258: ...2D 6 Wheels and Tires ...
Page 356: ...3D 24 Propeller Shafts ...
Page 396: ...4D 4 Parking Brake ...
Page 464: ...6B 13 Steering Handlebar ...
Page 501: ...Prepared by December 2007 Part No 99500 43070 01E Printed in Japan 504 ...
Page 502: ...Printed in Japan K8 9 9 5 0 0 4 3 0 7 0 0 1 E K8 ...