ページを印刷するIGNITION TIMING
Your motorcycle is equipped with a capacitor discharge ignition which
consists of a magneto, an electronic control unit and a Kill-Button.
Regularly check the electrical connections for dirt or corrosion. Apply
a dielectric grease to all connectors and the high tension lead when
necessary.
Timing of the engine can only be done with a stroboscopic lamp. Although
timing marks can be verified by using a dial indicator. Static timing
figures are as follows:
250: 14°± 1, 1.07 nm (0.042in)
406: 18°± 1, 2.26 nm (0.089in)
On all machines remove the timing inspection plug from the magneto cover
and connect the timing light pickup to the high tension lead.
Point the light beam straight into the inspection hole and rev the engine
to 5000 RPM for a brief instant.
If the timing is correct the magneto cover
mark and flywheel mark will align with each other.
If timing was incorrect, remove magneto cover.
Loosen the stator retaining
screws then move the stator plate in the advance or retarded direction to
correct the misalignment.
Tighten the stator plate screws.
Start the engine to recheck the alignment of the timing marks with the
timing light.
ATK
250
406
88ES
BSES
SPARK PLUGS
Reco11111ended Plugs
Bosch
W275T2
W275T2
TO CHECK CONDITION- OF SPARK PLUG
A Brownish tip reflects correct jetting and plug range.
A black insulator tip indicates a rich condition.
Auto Lite
I
4053
I
4053
A grey tip warns you of too lean an operating temperature. Advanced
ignition timing, engine overheating, fuel mixture too lean, clogged
carburetor jetting, wrong spark plug heat range or a leaking seal or
gasket.
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