Valve Clearance; Combustion Chamber Cleaning - Honda GP200H Manual

MAINTENANCE
Insert a thickness gauge [1] between the rocker arm [2]
and valve stem [3] to check the valve clearance.

VALVE CLEARANCE:

IN: 0.15 ± 0.02 mm (0.006 ± 0.001 in)
EX: 0.20 ± 0.02 mm (0.008 ± 0.001 in)
If adjustment is necessary, proceed as follows.
Hold the rocker arm pivot [4] and loosen the rocker arm
pivot lock nut (6 mm) [5].
Adjust by turning the rocker arm pivot until there is a
slight drag on the thickness gauge.
Hold the rocker arm pivot [1] and retighten the rocker
arm pivot lock nut (6 mm) [2] to the specified torque.
TORQUE: 10 N·m (1.0 kgf·m, 7 lbf·ft)
Recheck the valve clearance, and if necessary, readjust
the clearance.
Installation is in the reverse order of removal.
Do not reuse the
cylinder head cover
Check the V-belt tension (page 3-8).
gasket.

COMBUSTION CHAMBER CLEANING

Remove the cylinder head (page 12-3).
Clean any carbon deposits from the combustion
chamber [1].
Install the cylinder head (page 12-3).
3-14
[1]
[3]
To increase valve clearance: screw out.
To decrease valve clearance: screw in.
[1]
[1]
[2]
[5]
[4]
[2]