Honda GX270H Manual page 58

62Z7B000.book 3 ページ ２０１２年９月２７日 木曜日 午前１０時２１分
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From page 4-2
Perform the cylinder compression test (page
13-5).
Normal
Check for a restricted spark arrester
(applicable types).
Not restricted
Restart the engine according to the starting
procedure.
Compression
is too high
Check the valve clearance (page 3-13) and
then perform the cylinder compression test. If
the cylinder compression is too high, remove
carbon deposits in the combustion chamber
(page 3-15).
Check the valve clearance (page 3-13), and
Compression
then perform the cylinder compression test.
is too low
If the cylinder compression is too low,
perform a leak down test.
If there is no air leakage in the engine, check
the following.
- Valve spring free length (page 13-7)
- Valve seat width (page 13-5)
- Valve face irregularly worn (page 13-6)
- Decompressor operation (page 14-20)
- Piston ring side clearance (page 14-16)
- Piston ring width (page 14-17)
- Piston ring end gap (page 14-17)
- Piston skirt O.D. (page 14-15)
- Cylinder sleeve I.D. (page 14-14)
Restricted
Clean the spark arrester (page 3-13).
TROUBLESHOOTING
4-3