Kubota D650-B Handbuch Seite 156

e
Adjusting Valve Clearance
1) Measure the clearance with a feeler gauge after aligning
each cylinder with the top dead center of compression.
(Note)
• Align the flywheel mark
(Te)
with the timing check mark
on the crankcase.
Reference value
• For either intake or exhaust valve (when cooll
clearance
_____
t.O.145~
=1=B;;r-
T
0.0057
LAI
Compression :elease adjustment
(2)
OOllF018
e
Adjusting Compression Release
1)
Close the exhaust valve completely.
2)
Remove the compression release window cover from
the head cover.
3)
Pull the compression release lever.
4)
Reduce the valve clearance to zero by the compression
release adjustment bolt. Reach for the bolt through the
window. Then, screw in the bolt by 1 to 1.5 turns and
tighten the lock nut.
(Npte)
• After adjustment, turn the crankshaft by hand and check
to see that the valve and the piston should not be in
contact with each other.
0.750 to 1.125 mm
Reference value
0.0295 to 0.0443 in.
(1) Compression release window cover
(2) Compression position
(3) Compression release position
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