Crankshaft Inspection - Yamaha EF1000iS Service Manual
900 running watts/1000 starting watts, gas powered portable inverter, carb compliant
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Also See for EF1000iS:
- Owner's manual (140 pages) ,
- Theory & diagnostics manual (218 pages) ,
- Owner's manual (41 pages)
Table of Contents
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CRANKSHAFT, PISTON AND PISTON RING
1
1
a
2. Measure:
9 Piston side clearance
Out of specification → Replace.
NOTE:
9 Clean carbon deposits from the piston ring
grooves and ring s before measuring the
side clearance.
9 Measure the side clearance at several por-
tions.
Piston ring side
0.06 ~ 0.11 mm
Top ring
(0.002 ~ 0.004 in)
0.06 ~ 0.11 mm
2nd ring
(0.002 ~ 0.004 in)
CRANKSHAFT INSPECTION
1. Measure:
9 Crankshaft runout limit
use a dial gauge
Out of specification → Replace.
Runout limit:
0.03 mm (0.001 in)
2. Inspect:
9 Crankshaft sprocket 1
Crack/damage/wear → Replace the
crankshaft.
3. Measure:
9 Crank pin diameter a
Out of specification → Replace the
crankshaft.
Crank pin diameter:
15.970 ~ 15.985 mm
(0.629 ~ 0.630 in)
Limit:
15.940 mm
(0.627 in)
3-25
ENG
Wear limit
clearance
0.15 mm
(0.006 in)
- Quick Links:
- Carburetor Disassembly
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Troubleshooting
