CRANKCASE
CAMSHAFT CAM HEIGHT
Measure the cam height of the camshaft.
If the measurement is less than the service limit,
replace the camshaft (page 13-5).
CAMSHAFT O.D.
Measure the camshaft O.D.of the camshaft.
If the measurement is less than the service limit,
replace the camshaft
(page 13-5)
.
DECOMPRESSOR WEIGHT
Check for worn and weakened spring.
If the return spring (1) is worn or weakened, replace the
weight return spring.
Check that the decompressor weight moves smoothly.
If the decompressor weight does not move correctly,
replace the camshaft
(page 13-5)
.
GX240/GX270
STANDARD:
IN: 31.945 – 32.145 mm (1.2577 – 1.2655 in)
EX: 31.666 – 31.866 mm (1.2467 – 1.2546 in)
SERVICE LIMIT:
IN: 31.35 mm (1.234 in)
EX: 31.35 mm (1.234 in)
GX340/GX390
STANDARD:
IN: 32.498 – 32.698 mm (1.2794 – 1.2873 in)
EX: 31.985 – 32.185 mm (1.2592 – 1.2671 in)
SERVICE LIMIT:
IN: 32.198 mm (1.2676 in)
EX: 29.886 mm (1.1766 in)
STANDARD: 15.966 – 15.984 mm
(0.6286 – 0.6293 in)
SERVICE LIMIT: 15.92 mm (0.627 in)
(1)
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