Honda V30 Magna VF500C Manual page 141

CYLINDER HEAD/VALVE
TORQUE VALUES
Cylinder head cover
Cam sprocket bolt
Rocker arm shaft
Cylinder head
Camshaft holder 6 mm bolt
8 mm bolt
Oil pipe joint bolt
Oil pass pipe
TOOLS
Special
Valve guide driver/remover, 5.0 mm
Valve guide reamer, 5.0 mm
Compression gauge attachment
Common
Valve spring compressor
Valve guide driver
TROUBlESHOOTl NG
8-12 N·m (0.8-1.2 kg-m, 6-9 ft-Ib)
18-20 N·m (1.8-2.0 kg-m, 13-14 ft-Ib)
45-55 N·m (4.5-5.5 kg-m, 32-40 ft-Ib)
30-34 N·m (3.0-3.4 kg-m, 22-25 ft-Ib)
10-14 N·m (1.0-1.4 kg-m, 7-10 ft-Ib)
21-25 N·m (2.1-2.5 kg-m, 15-18 ft-Ib)
20-25 N·m (2.0-2.5 kg-m, 14-18 ft-Ib)
10-14 N·m (1.0-1.4 kg-m, 7-10ft-lb)
07942-MA60000
07984-MA60000
07510-MB00101
07757-0010000
07743-0020000
~HONDA
~
V30 MAGNA
Engine top-end problems usually affect engine performance. These can be diagnosed by a compression test, or by tracing
noises with a sounding rod or stethoscope.
low compression
1. Valves
I ncorrect valve adjustment
Burned or bent
Incorrect timing
Broken spring
2. Cylinder head
leaking or damaged head gasket
- Warped or cracked cylinder head
3. Cylinder and piston (Refer to Section 10)
9-2
Compression too high
Excessive carbon build-up on piston or
combustion chamber
Excessive noise
1. I ncorrect valve adjustment
2. Sticking valve or broken valve spring
3. Damaged or worn camshaft
4. loose or worn cam c.hain
5. Worn or damaged cam chain tensioner
6. Worn cam sprocket teeth
7. Worn rocker arm and/or shaft
Date of Issue: July, 1984
© HONDA MOTOR CO., lTD.