Crankcase Inspection - Yamaha EF1000 Service Manual

•llllull
PISTON, CAMSHAFT, CRANKCASE, CRANKSHAFT
ENG
8
a
A
B
c
3-14
2. Inspect:
•Camshaft
CD
•Decompressor
ell
•Valve lifter@
Damage/Wear---+Replace.
3. Measure:
•Camshaft diameter
Out of specification--+Replace.
Camshaft diameter:
Standard: 12.0 mm (0.472 in)
Limit: 11.9 mm (0.468 in)
CRANKCASE INSPECTION
1. Inspect:
•Cylinder walls
Vertical scratches---+Rebore or replace
cylinder.
2. Measure:
•Cylinder inside diameter "D"
NOTE: ---------------------------
Obtain measurements at three depths by
placing measuring instrument parallel to and
at right angles to crankshaft.
Out of specification---+Rebore cylinder,
and replace piston and piston rings.
~
Standard Wear limit
Cylinder inside
50.0 mm
50.15 mm
diameter
, Dl'
(1.969 in)
(1.974 in)
Cylinder
Omm 0.5mm
taper
{0 in) (0.02 in)
"TI'
D=Maximum A,B,C
T =Maximum A-Minimum C