Camshaft Runout - Suzuki EN125-2A Service Manual

3-13 ENGINE
CAMSHAFT CAM WEAR
Worn-down cams are often the cause of mistimed
valve operation resulting in reduced output power.
The limit of cam wear is specified for both intake
and exhaust cams in terms of cam height
which is to be measured with a micrometer.
Replace camshafts if found it worn down to the
limit.
Micrometer
(25 50 mm)
Cam height
Height
H
Intake cam
Exhaust cam
CAMSHAFT JOURNAL WEAR
Measure the outside diameter of camshaft journal.
Replace either the cylinder head set or the cam
shaft if the O.D. is incorrect.
Micrometer
(0 25 mm)
Camshaft journal
O.D.standard

CAMSHAFT RUNOUT

Measure the runout with a dial gauge. Replace the
camshaft if the runout exceeds the limit.
Magnetic stand
Dial gauge (1/100 mm)
V-block (100 mm)
Service limit
,
H
09900-20202
service limit
33.350 mm
33.000 mm
09900-20205
21.959 21.980 mm
09900-20701
09900-20606
09900-21304
0.10 mm