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mk3 new starter

Classic Norton Commando Motorcycles.

mk3 new starter

Postby tray » Wed Sep 13, 2017 4:43 am

hi replaced original starter which just about worked when warm with STARTER MOTOR
PART NO
064791B
with a motobatt battery and boyer micro mk4 now it wont sytart on motor at all it seems the best spark i get at the plugs is when i release the starter button , i presume its the boyer but would be pleased to hear any comments please

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Re: mk3 new starter

Postby RoadScholar » Wed Sep 13, 2017 5:22 am

Have your up-graded your high current starter wires?

Are you sure that your alternator is up to OE specs?
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Re: mk3 new starter

Postby L.A.B. » Wed Sep 13, 2017 6:03 am

tray wrote:with a motobatt battery and boyer micro mk4 now it wont sytart on motor at all it seems the best spark i get at the plugs is when i release the starter button,


Is the white/purple (ballast bypass) wire disconnected (preferably at both ends, coils and starter solenoid)? As it won't start on the electric starter with that wire connected if electronic ignition is fitted.
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Re: mk3 new starter

Postby tray » Wed Sep 13, 2017 8:06 am

hi
ta for replys yes main cables upgraded and ballast wires disconnected will test alternator when
started

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Re: mk3 new starter

Postby Lannis » Wed Sep 13, 2017 10:28 am

Battery been load-tested? Not just with a voltmeter but a load-tester? Funny things can happen when a battery can't supply all the current necessary to turn the starter while maintaining voltage enough to spark the Boyer.

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Re: mk3 new starter

Postby jaydee75 » Wed Sep 13, 2017 12:07 pm

Can you start it with kick assist to the starter. Would rule out a weak battery.
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Re: mk3 new starter

Postby tray » Sun Sep 24, 2017 3:07 am

hi yep started with kicker

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