Fuel System Contents - Honda CB400T Shop Manual

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HONDA
C B 4 0 0 T
SERVICE INFORMATION
4-1
AIR CUTOFF VALVE
DISASSEMBLY
4-6
TROUBLESHOOTING
4-1
COMPONENT ASSEMBLY
4-7
CARBURETOR REMOVAL
4-2
~
-
FLOAT LEVEL ADJUSTMENT
4-7
1
I
CARBURETOR SEPARATION
4-2
I
VACUUM CYLINDER
DISASSEMBLY
CARBURETOR ASSEMBLY
4-7
4-4
CARBURETOR INSTALLATION
4-8
1
FLOAT CHAMBER DISASSEMBLY
4-5
FUEL TANKIAIR CLEANER CASE 4-9
1
SERVICE INFORMATION
WORKING PRACTICE
Use caution when working with gasoiine. Always work in a well-ventilated area and away from sparks or open flames.
When disassembling fuel systemparts, note the locations of the O-rings. Replace them with new ones on reassembly.
The float bowls have drain plugs that can be loosened to drain residual gasoline.
SPECIAL TOOL
Common Tool
FLOAT GAUGE
07401-0010000
!
SPECIFICATIONS
TROUBLESHOOTING
Throttle grip free play
Engine Cranks But Won't Start
1. No fuel in tank
2.
No fuel to cylinders
3.
Too much fuel getting to cylinders
4.
No spark at plugs (ignition malfunction)
5. Air cleaner clogged
Engine Idles Roughly, Stalls, or Runs Poorly
1. ldle speed incorrect
2.
Ignition malfunction
3.
Low compression
4.
Rich mixture
5.
Lean mixture
6. Air cleaner clogged
7.
Air leaking into manifold
8.
Fuei contaminated
9.
Carburetors not synchronized
1
I
I
1
I
!
Venturi dia.
Setting mark
Float level
Pilot screw opening
Idle speed
Fast idle
Vacuum (at idle speed1
2-6 rnrn (0.08-0.24 in.)
Lean Mixture
1. Carburetor fuel jets clogged
2.
Vacuum piston stuck closed
3.
Fuel cap vent blocked
4.
Fuel filter clogged
5.
Fuei line kinked or restricted
6.
Float valve defective
7.
Float level too low
Rich Mixture
1. Choke stuck closed
2 . Float valve defective
3.
Float level too high
4.
Carburetor air jets clogged
-
32 rnm
VB21A
15.5 mm 10.61 in.)
1,112
1,200 + I 0 0 rpm
2,500
i-
500 rpm
200-240 mmHg
1
Date of Issue: September, 1977
0 HONDA MOTOR CO., LTD.
4- 1

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