Topic: K0 Ignition switch repair

[kaysystems]

My 750 K0 ignition switch has suddenly become intemittent. Sometimes it work & sometimes it doesn't.

Can I take it apart to fix it, or is it sealed?

Thanks

David

[Kevin D]

I was able to fix my intermittent ignition switch. I think there are folding tabs on the back that hold it together. If you break them off you are done for. Don't lose the steel ball or spring. I used scotchbrite to polish the contacts and a little grease to prevent corrosion. I also had a problem at the round connecter, one of the pins didn't line up too well and would get pushed out the back of the harness connecter. All's well now since repair.

[kaysystems]

Thanks. That's what I need to know before I take it off the bike. I have to wiggle the key a LOT to get it to work on the days it decides to be difficult.

regards

David

[hymodyne]

there may be a broken connection under the protective rubber boot. I'd check there first, before you crack the switch housing open.  I was able to re-solder the broken contact, after cleaning affected areas with steel wool and tinning flux.

hym

[BobbyR]

Kaysystems, It is a very simple mechanism, the actual switch is below the cylinder. When I picked up my bike, it had no key, while I waited for a new key I took it apart and just turned the switch. The lock is a seperate component so it you have to wiggele the key to turn the key, you have another problem which is the lock tumbler.

[kaysystems]

This morning I took the switch apart. The lock mechanism is fine. The plastic plate inside that rotates is deformed. Looks like some of the contacts got hot & melted the plastic a bit. Soon smoothed it out. The plastic plate also has a guide pin that locates in the end plate (one with the wires on it). Well the guide pin was broken off.
All repaired now, but I think I'll pick up a spare.

Thanks guys for your help.

David