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SOHC.co.uk Forums => CB750 => Topic started by: PHILIP2908 on February 12, 2017, 09:29:42 AM

Title: Starter Safety Switch
Post by: PHILIP2908 on February 12, 2017, 09:29:42 AM

Hi All,
Tried to start the DK special yesterday (had it running before) and it was DEAD.
I'm only getting 10 volts at the solenoid when the button is pressed - the battery is fully charged.
Is it something to with this? (photo should be attached).
The yellow/red & black wires disappear inside and don't come out,
It's described as a safety switch and it looks as though it's dropped down previously and got mangled up in the drive chain. Which won't have helped...
- How does it work?
- How does it come apart?
- Can it be bypassed?
- Can it be fixed?
As always any ideas welcomed.
Thanks in advance.
Phil d'A

Title: Re: Starter Safety Switch
Post by: BigAl (Alan) on February 12, 2017, 10:28:33 AM

I think (as image) its a personal modification by a previous owner? The starter safety switch (USA up to K5) version will have 5 wires via a 6 way RED connector
1. Yellow/red
2. Light green/red
3. Black
4. Green
5. Dark green/red

All CB750 looms are based on the K0 version, it can be by-passed. Re My CB750 book by Mark Paris.

Title: Re: Starter Safety Switch
Post by: mike the bike on February 12, 2017, 12:17:59 PM

If you've got a day off on Monday,  I'm around Cheltenham so I could have a look at it.

Title: Re: Starter Safety Switch
Post by: Bryanj on February 12, 2017, 04:17:20 PM

10v at solenoid is either bad battery or bad connection, all the safety interlock does is stop the button doing anything unless either neutral light is on or clutch lever pulled

Title: Re: Starter Safety Switch
Post by: PHILIP2908 on February 12, 2017, 08:29:06 PM

Hi Mike the Bike
Sorry I'm not around this week. Thanks for the offer anyway.
Regards
Phil d'A