SOHC.co.uk Forums > CB500/550
ignition
Sesman:
It could have created arcing on the solenoid contacts within the unit causing the copper contact bar to temporarily fuse to the contact posts. 110A starting current and IsquaredR would create considerable heat. I’m not convinced a new solenoid would be required. I’d suggest opening the solenoid to check the internal contact bar before spending your money. Your choice of course.
McCabe-Thiele (Ted):
Can the solenoids be unscrewed Phil or is it some sort of crimping, can't say I've ever taken one to bits ?
Bryanj:
Bit of both on originals Ted
Sesman:
My 1977 550 F2 original solenoid contacts canister and coil unit are joined together using two screws and a simple tongue and recess arrangement. I’ll try to get a picture tomorrow, as long as I don’t have to remove it to do so. Original units are very, very unsophisticated and all the better for it.
Morala:
another update, i removed the solenoid and cleaned all the contacts, checked the wiring refitted the unit, will keep an eye on it over the winter cheers for all your help again.
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