Topic: What exactly does the Starting Motor Safety Unit do?

[bollingball]

I have three starter motor safety switches. They fit the 550 or the 750.
I will sell all of them for $20.***** free shipping. One has to be good.
I also have one OEM left handlebar safety switch, brand new for 1978 model.

This should be in parts for sale NOT here.
Have you not read this??
http://forums.sohc4.net/index.php?topic=123220.0
Ken

He's offering them to the OP Ken, he also didn't start a thread in the wrong section, just saying...

OK I did not see where he offered it to anyone specifically. He is just

[jpfrk2001]

Definatly found the wires for the front handle brake signal. But the handle trigger is gone.

They connect to a switch on the lower triple.

that switch is gone then.

[jpfrk2001]

I have three starter motor safety switches. They fit the 550 or the 750.
I will sell all of them for $20.***** free shipping. One has to be good.
I also have one OEM left handlebar safety switch, brand new for 1978 model.

Keep those available please. I will get with you next week. Im going to start my build thread soon in the other forumn

[LesterPiglet]

The front brake light switch is part of the brake line normally.

http://www.cmsnl.com/honda-cb550f2-super-sport-550-four-1977-england_model17121/partslist/F05.html#results
part #2

[SohRon]

Definatly found the wires for the front handle brake signal. But the handle trigger is gone.

They connect to a switch on the lower triple.

that switch is gone then.

The front brake light switch is part of the brake line normally.

http://www.cmsnl.com/honda-cb550f2-super-sport-550-four-1977-england_model17121/partslist/F05.html#results
part #2

[jpfrk2001]

Thank you. That clears that up. Now for the neutral safety switch.

[HondaMan]

If only Honda had added to that socalled Starting Motor Safety Unit an extra switch on the side stand...
Would have saved me some narrow escapes over the years...

They actually did for the first month or so of the 750K3 model. They recalled them all, though, after most of them failed. The [few] bikes out there that have them removed have a short jumper, male-female bullet connectors, found near the Safety Module, in the Clutch Switch circuit. The bikes after that have no junctions in the main harness for it.

[Deltarider]

Quote from: Deltarider on June 22, 2013, 05:49:14 am

If only Honda had added to that socalled Starting Motor Safety Unit an extra switch on the side stand...
Would have saved me some narrow escapes over the years...

They actually did for the first month or so of the 750K3 model. They recalled them all, though, after most of them failed. The [few] bikes out there that have them removed have a short jumper, male-female bullet connectors, found near the Safety Module, in the Clutch Switch circuit. The bikes after that have no junctions in the main harness for it.

I see. The K3 was never imported here. We went straight from the K2 to the K6. Decades ago I made one myself by using an aftermarket switch you could attach to the sidestand. It didn't last very long though. After I went through terrain I discovered it had a leak and the mercury had gone. Felt guilty and never mounted another.