BIMOTA DB1 Starter Motor Brush Replacement

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Removing the cover is quite a challenge. This first job is full of mysteries.

It wouldn’t budge at all, so what’s going on? There’s a bearing on the cover side that’s press-fitted and holding it in place.
I made a simple puller and carefully worked it off.

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Two locations inside the case, one on the outside, secured from the inside.
After that, remove the starter motor clip and pull out the gear—done.

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I was glad I could get it out without disconnecting the oil lines.

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Since there’s no manual, I’m documenting everything with photos as I go.

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It looks like it’s worn down nearly 10 millimeters.

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I’ll polish it lightly and clean out the grooves to get it ready.

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The magnet isn’t peeling off, so that’s reassuring.

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Just taking some measurements. The difference between the worn and unworn areas isn’t much.

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The thickness varies slightly, so I filed it down and fitted it in. Check, check, and check again.

 

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