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SOHC.co.uk Forums => CB750 => Topic started by: Martin6 on July 07, 2026, 10:46:54 AM

Title: CB750K6 Headlight Mainbeam Button Spring
Post by: Martin6 on July 07, 2026, 10:46:54 AM
Hi all. My K6 is still going strong after much work and re-furb 3 years ago.

I had a failure of the horn button, on the left side handlebar switchgear. A soldered terminal had dried up, which I fixed. However, when putting it back together, the tiny spring on the headlight flasher button flew off, never to be seen again.

I have cobbled something together using a spring from a ballpoint pen, but it is too large (diameter) and doesn't stay put. By any chance, does anyone have a spare? If not, could anyone recommend a source for a suitable replacement?

Many thanks,
Martin
Title: Re: CB750K6 Headlight Mainbeam Button Spring
Post by: Bryanj on July 07, 2026, 12:40:40 PM
There was a seperate part number for the spring on the starter button on earlier bikes, look at a 72 500. That might fit and last time i looked was still available
Title: Re: CB750K6 Headlight Mainbeam Button Spring
Post by: Martin6 on July 07, 2026, 12:47:09 PM
There was a seperate part number for the spring on the starter button on earlier bikes, look at a 72 500. That might fit and last time i looked was still available

Thanks Bryan. I have searched on that part #. In Google and David Silver, both come up with a rotary blade.
Title: Re: CB750K6 Headlight Mainbeam Button Spring
Post by: ST1100 on July 07, 2026, 02:00:31 PM
Methinks that's loc #7, P/N 35318259000...

https://www.cmsnl.com/en-at/honda-cb500k1-four-european-direct-sales_model14661/partslist/F01.html
Title: Re: CB750K6 Headlight Mainbeam Button Spring
Post by: Bryanj on July 07, 2026, 03:38:57 PM
Dave silver says order in so should be available from any Honda dealer but is £5 plus drat so expensive if it dont work.
Same part on lots of 70's Hondas so somebody must have one, me yes probably but has anybody seen my garage!!!!!
Title: Re: CB750K6 Headlight Mainbeam Button Spring
Post by: Martin6 on July 07, 2026, 04:15:21 PM
Thank you both, I still can't get to it on the David Silver website, I will ring them.

Regards, Martin