Kawasaki KX250F (2004) [38/357] Http manuals magnamaniac com
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Kawasaki KX250F (2004) [38/357] Http manuals magnamaniac com

Kawasaki KX250F (2004) [38/357] Http manuals magnamaniac com
PERIODIC MAINTENANCE 2-19
Periodic Maintenance Procedures
CAUTION
Be sure to remeasure the clearance after selecting
a shim. The clearance can be out of the specified
range because of the shim tolerance.
○
If there is no valve clearance, use a shim that is a few
sizes smaller, and remeasure the valve clearance.
•
When installing the shim, f ace the marked side [A] toward
the valve lifter [B]. At this time, apply engine oil to the
shim or the valve lifter to keep the shim in place during
camshaft installation.
CAUTION
Do not put shim stock under the shim. This may
cause the shim to pop out at high rpm, causing ex-
tensive engine damage.
Do not grind the shim. This may cause it to fracture,
causing extensive engine damage.
•
Apply engine oil to the valve lifter surface and install the
lifter.
•
Install the camshaft (see Engine Top E nd chapter).
•
Recheck the valve clearance and readjust if necessary.
•
Install the cylinder head cover (see Engine Top End chap-
ter), 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)
Cylinder Head Warp Inspection
•
Remove the cylinder head (see Engine Top E nd chapter).
•
Lay a straightedge [A] across the lower surface of the
head at several different points, and measure warp by
inserting a thickness gauge between the straightedge and
the head.
If warp exceeds the service limit, repair the mating sur-
face. Replace the cylinder head i f the mating surface is
badly damaged.
Cylinder Head Warp
Service Limit: 0.05 mm (0.0020 in.)
•
Remove the valves (see Engine Top End chapter).
•
Space the carbon out of the combustion chamber and
exhaust port with a scraper [A] or a suitable tool.
•
Clean the cylinder head, using high-flash point solvent.
•
Blow out any particles which may obstruct the oil passage
in the cylinder head using compressed air.
•
Install the valves (see Valve Installation).

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