Honda GX270H Manual page 162

62Z7B000.book 19 ページ ２０１２年９月２７日 木曜日 午前１０時２１分
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CONNECTING ROD BIG END OIL
CLEARANCE
Clean all oil from the crankpin and connecting rod big
end surface.
Apply engine oil to the connecting rod bolt threading
surface.
Place a piece of plastigauge on the crankpin, install the
connecting rod upper and the connecting rod lower, and
tighten the connecting rod bolts to the specified torque.
TORQUE: 14 N·m (1.4 kgf·m, 10 lbf·ft)
Do not rotate the crankshaft while the plastigauge is in
place.
Remove the connecting rod and measure the
plastigauge.
STANDARD:
SERVICE LIMIT:
If the clearance is more than the service limit, inspect
the connecting rod big end I.D. and the crankpin O.D.
If necessary replace the part that is not within the
service limit and reinspect the clearance.
CRANKSHAFT RUNOUT
Set the crankshaft on V-blocks and measure the runout
using a dial indicator.
[1] 16 mm (0.6 in)
[2] GX270H: 16 mm (0.6 in)
[3] GX270H L TYPE: 31 mm (1.2 in)
SERVICE LIMIT:
If the measured runout is more than the service limit,
replace the crankshaft (page 14-6).
0.040 – 0.064 mm
(0.0016 – 0.0025 in)
0.12 mm (0.005 in)
GX390H1: 17 mm (0.7 in)
GX270H P TYPE: 32 mm (1.3 in)
GX390H1 L TYPE: 36 mm (1.4 in)
GX390H1 P TYPE: 32 mm (1.3 in)
0.10 mm (0.004 in)
CRANKCASE
L, P TYPE ONLY:
MEASURE POINT
[3]
[1] [2]
14-19