Question about BMW K 100 RT Motorcycles

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Starter Problem The starter on my 1985 K100 spins but does not engage (recent problem).

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Your sprag clutch needs cleaning

Posted on Nov 10, 2008

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Why is my starter not turning my engine?

Sounds like the bendix is stuck. When the starter motor spins, the inertia makes the gear that engages with the flywheel fly forward and engage. When you release the key the gear returns back to its at rest position. To fix it, remove the starter motor, flood the helical grooves with WD40 to clean it, then apply light machine oil like 3 in 1 and then wipe off an excess oil.

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My 1985 720 pickup with a z24 engine will seldom start when it is warm with the ignition switch. It will spin over very well but will not start. I can push it and it starts immediately. It seems as if...

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Starter Problem

your sprag clutch needs cleaning

Nov 20, 2008 | 1989 BMW K 100 RT

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