Kawasaki KX250F (2004) [141/357] Http manuals magnamaniac com
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Kawasaki KX250F (2004) [141/357] Http manuals magnamaniac com

Kawasaki KX250F (2004) [141/357] Http manuals magnamaniac com
5-16 ENGINE TOP END
Camshaft
•
Uniformly tighten all bolts and after t he camshaft has set-
tled, uniformly tighten all the bolts.
○
Bolts [A] are long.
○
Following the sequence num bers on the camshaft caps,
tighten the cap bolts [1 ∼ 4].
Torque - Camshaft Cap Bolts: 12 N·m (1.2 kgf·m, 104 in·lb)
•
Install the camshaft chain tensioner (see Camshaft Chain
Tensioner Installation), then, check the camshaft chain
timing.
CAUTION
After this procedure, if any resistance is felt while
turning over the crankshaft, stop immediately, and
check the camshaft chain timing. Valves will be
bent if the timing is not properly set.
•
Install the cylinder head cover (see Cylinder Head Cover
Installation), timing inspection cap, and the flywheel cap.
Torque - Timing Inspection Cap: 4 N·m (0.4 kgf·m, 35 in·lb)
Flywheel Cap: 5 N·m (0.5 kgf·m, 43 in·lb)
Camshaft and Camshaft Cap Wear
•
Measure each clearance between the camshaft journal
and camshaft cap using plastigauge (press gauge) [A].
○
Tighten the camshaft cap bolts.
Torque - Camshaft Cap Bolt: 12 N·m (1.2 kgf·m, 104 in·lb)
NOTE
○
Do not turn the camshaft when the plastigauge is be-
tween the journal and camshaft cap.
If any clearance exceeds the service limit, measure the
diameter of each camshaft journal with a micrometer.
Camshaft Bearing Clearance
Standard: 0.020 ∼ 0.062 mm (0.0008 ∼ 0.0024 in.)
Service Limit: 0.15 mm (0.0059 in.)
If the camshaft journal diameter is less than the service
limit, replace the camshaft with a new one and measure
the clearance again.
Camshaft Journal Diameter
Standard: 21.959 ∼ 21.980 mm (0.8645 ∼ 0.8654 in.)
Service Limit: 21.93 mm (0.8634 in.)
If the clearance still remains out of the service limit, re-
place the cylinder head unit.

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