NEWS FLASH - December 2013
We are now selling magneto bearings, insulators, oil seals and armature shims from our on-line shop.

Brightspark Magnetos

NEW ... Take a look at some of the equipment we use in our workshop for magneto servicing and overhauls.

 

 

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DIY Magneto Maintenance and Troubleshooting

Bearings and Bearing Insulators
Pick-up, HT Lead and Plug-cap - 1
Slip-ring
Contact-breaker Assembly
Cam
Internal HT Continuity
Main-body Earth Brushes and Bearing Insulators
Contact-breaker Re-installation and Points Setting
Low-tension Continuity
Earth Brush Continuity
Complete High-tension Continuity
Will It Spark?
Timing
Pick-up, HT Lead and Plug-cap - 2

 

Bearings and Bearing Insulators

Remove the contact-breaker cover.

 

With face-cam magnetos, remove the moving point of the contact-breaker assembly to expose the centre-screw.

 

Put a pair of pliers on the contact-breaker centre-screw and check there is no detectable radial play, and no axial play of more than a few thou. If the drive pinion/sprocket or drive shaft of the magneto is accessible, do a similar check at that end. If there is play, it is indicative of a bearing insulator disintegrating, serious bearing problems, or that the armature wasn't shimmed correctly when it was last rebuilt, in which case the magneto will need a more complete overhaul.

 

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Home EasyCap™ condensers Magneto parts Magneto services Magnetos for sale Online shop Conden­sectomy Magneto maint­enance Library Down­loads FAQs Gallery Work­shop Inform­ations en français Testi­monials News Links Contact

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