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Engine Stop Switch Electric Current Check; Crankshaft Sensor Inspection; Crankshaft Sensor Air Gap Adjustment - Kawasaki KX250 Service Manual

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Ignition System

Engine Stop Switch Electric Current Check

Disconnect the engine stop switch lead.
Start the engine.
Ground the stop switch lead of the main harness side
while the engine is running.
If does not stop the engine, replace the C.D.I Unit.

Crankshaft Sensor Inspection

Magneto Lead Connector (see Flywheel Magneto In-
Set the hand tester [A] to the × 100 Ω range and connect
it to the Green/White [B] and White/Yellow [C] Leads in
the connector.
Special Tool - Hand Tester: 57001-1394
If there is more resistance than the specified value, the
coil has an open lead and must be replaced. Much less
than this resistance means the coil is shorted, and must
be replaced.
Crankshaft Sensor Resistance: approx. 240 Ω at 20°C
Using the highest resistance range of the tester, measure
the resistance between the crankshaft sensor leads and
chassis ground.
Any tester reading less than infinity (∞) indicates a short,
necessities replacement of the crankshaft sensor assem-

Crankshaft Sensor Air Gap Adjustment

Loosen the crankshaft sensor screws [A].
Insert a thickness gauge [B] between the crankshaft sen-
sor core and the timing plate.
Thickness Gauge: 0.65 mm (0.026 in.) KX250-R1, R6F
While pressing the crankshaft sensor toward the magneto
flywheel, tighten the coil screws and remove the thickness
Check the air gap (see Flywheel Magneto Installation).
If the air gap is not within the specified range, readjust the
0.85 mm (0.033 in.) KX250R7F


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  • #1071172 May 25, 2018 05:01:
    I am trying to find a repair manual for 1986 Kawasaki KX 250
    Engine​: KX250DE005​703
    Neck: JKAKXMD17G​A005578

    S​pecificall​y now, I need detailed carburetor view, repair and instructio​n.

    I can not find/see the exact year designatio​n on the manuals I
    'm looking at, only pictures of the bike. Nothing I've found is exact.