Yamaha EF2000iS Manual De Servicio página 164

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PISTON, CONNECTING ROD, CRANKSHAFT AND
a
CRANKCASE
2. Measure:
9 Piston clearance
Out of specifications → Rebore or
replace cylinder and replace piston and
piston rings.
Piston clearance =
Cylinder inside diameter –
Piston skirt diameter
3. Measure:
9 Piston pin hole inside diameter a
Out of specifications → Replace.
4. Measure:
9 Piston pin diameter a
Out of specifications → Replace.
a
5. Inspect:
9 Check the piston pin enters smoothly
into the piston pin hole.
If the piston pin fits tightly into the pis-
ton, check the piston pin hole. If there is
any protrusion, use a knife or scraper to
gently remove it so that piston pin can
be pushed in gently with your fingers.
3-38
ENG
Piston clearance:
0.015 – 0.040 mm
(0.0006 – 0.0016 in)
Limit: 0.100 mm (0.0039 in)
Piston pin hole inside diameter:
12.004 mm (0.4725 in)
Wear limit:
12.05 mm (0.4744 in)
Piston pin diameter:
11.996 – 12.000 mm
(0.4723 – 0.4724 in)
Wear limit:
11.95 mm (0.4705 in)

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