Valve Guide Replacement - Honda GP200H Manual

CYLINDER HEAD
PUSH ROD RUNOUT
Check both ends of the push rod for wear.
Check the push rod for straightness.
If necessary, replace the push rod.

VALVE GUIDE REPLACEMENT

Chill the replacement valve guides in the freezer
section of a refrigerator for about an hour.
Use a hot plate or oven to heat the cylinder head evenly
to 150°C (300°F).
To avoid burns, use heavy gloves when handling
the heated cylinder head.
• Do not use a torch to heat the cylinder head;
warpage of the cylinder head may result.
• Do not get the cylinder head hotter than 150°C
(300°F); excessive heat may loosen the valve seat.
Remove the heated cylinder head from the hot plate
and support it with wooden blocks.
Drive the valve guides [1] out of the cylinder head from
the combustion chamber side.
TOOL:
Valve guide driver, 5.5 mm [2]
• When driving the valve guides out, be careful not to
damage the cylinder head.
12-8
07742-0010100
[2]
[1]