ENGINE MEASUREMENTS
Page C-17
Kawasaki Engine Shop Rebuild Manual
BALANCER SHAFT
Measure Balancer Shaft Bearing/Journal
Wear
A.
Measure both balancer shaft journal diameters [A] at
several points around the journal’s circumference.
B. If journal diameter is less than the service limit,
replace the balancer shaft with a new one.
Balancer Shaft Journal Diameter
Standard: 31.959 ~ 31.975 mm (1.2582 ~ 1.2589 in.)
Service Limit: 31.935 mm (1.2573 in.)
C.
Measure the inside diameter [A] of the balancer shaft
bearing on the crankcase at several points.
D. If inside diameter is more than the service limit,
replace the crankcase with a new one.
Balancer Shaft Bearing Inside Diameter (Crankcase)
Standard: 32.000 ~ 32.016 mm (1.2598 ~ 1.2605 in.)
Service Limit: 32.06 mm (1.262 in.)
E.
Measure the inside diameter [A] of the balancer shaft
bearing on the crankcase cover at several points.
F. If inside diameter is more than the service limit,
replace the crankcase cover with a new one.
Balancer Shaft Bearing Inside Diameter (Crankcase
cover)
Standard: 32.000 ~ 32.016 mm (1.2598 ~ 1.2605 in.)
Service Limit: 32.06 mm (1.262 in.)
BREATHER VALVE
Inspect Breather Valve
A. Remove the breather valve (see Remove Breather
Valve).
B. Inspect the reed valve for breakage, hair cracks or
distortion; replace it if necessary.
C. Inspect the back plate for damage or rough contact
surface; replace it if necessary.
D. Inspect the valve seating surface. The surface should
be free of nicks or burrs.
E. Align center of the valve seat with center of the reed
valve and back plate, then tighten the breather valve
screw.
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