OMEM710 Hardware Manual 2v11
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shows a higher value) then retard the engine. The larger buttons make larger changes, the
smaller buttons make smaller changes. The Target Timing on the PC will not change, but the
timing mark on the engine will move, so each adjustment will require the strobe light resetting.
Repeat these changes until the strobe light timing figure agrees with the Target Timing figure.
If you cannot get the engine to start and believe this is because the ignition timing is incorrect then
you can perform the above tests whilst cranking the engine. Timing lights will not work correctly
during normal cranking as the engine speed varies so much due to the compression of each
cylinder. Therefore the spark plugs should be removed (to remove compression), put back into the
HT leads, and placed onto an earthed part of the engine, then the process documented above can
be followed but at cranking speeds. When this is done and you get the engine started, it should be
repeated at normal running speeds.
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