SOHC.co.uk Forums > CB750

CB750F2 starter motor

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miclyn:
I am having problems starting the bike. New battery fully charged but when trying to start the battery drains quickly and the starter motor is labouring. Looks like the starter is faulty. Does anyone know where i can get it reconditioned fairly locally to Upminster, Essex

Tomb:
Have you tried stripping to grease the planetary gears, sorry I don't know the CB750's but all the starter motors I've worked on get dry and then slow, next is replacement brushes.

Just a thought

miclyn:
Not tried anything yet as i thought i would just post to get some ideas.

mick:
Hi Mike your probably better off taking it apart and cleaning it etc yourself  ;), theres plenty of help on here if you get stuck, cheers Mick.

miclyn:
Stripped down starter cleaned out carbon dust. Brushes and commutator all ok. Reassembled put it back on bike and it's still the same. On the button it turns over ok for about 5secs then slowly dies by which time the battery is drained. even with 2 batteries connected fully charged it's not much better. Any ideas. I am at least able to kick start it even though it's running rough at the moment. Going to balance the carbs tomorrow.

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