4 replies [Last post]
JakeF
JakeF's picture
 Offline
VBMWMO #9236
Southern California
Joined: 12/01/2016
Posts: 83

I took my '56 out for a spin yesterday and when I went to shut it off it wouldn't stop. Normally I pull the "key" up one notch and it shuts down. Now it doesn't care what position the key is in or whether it is even in the bike. I have to shut off the gas and let it run dry which I usually do when putting the bike away for a few weeks but not very handy if I am just running a few local errands which is what I was doing. I assume it is something in the switch/light bucket but thought I would ask the forum first seeing as someone out there probably has a quick answer.

__________________

JakeF
1956 R69, 1976 R90S, 2008 R1200GS

Daves79x
Daves79x's picture
 Offline
VBMWMO #9030
Joined: 08/09/2015
Posts: 325
You've Lost

A set of points in the headlight board should close when you pull the key, grounding the 'kill' circuit. You've lost that ground somewhere, or the points aren't making contact. I'd look there first.

Sorry - I have that backwards, sort of. The points do indeed open when you remove the key, opening the ignition circuit.

Dave

__________________

Dave

JakeF
JakeF's picture
 Offline
VBMWMO #9236
Southern California
Joined: 12/01/2016
Posts: 83
What is this?

When I opened the light bucket I found this little screw inside on the bottom. It does not appear to be broken off but something that came loose. Can't find where it came from. The points on the key mechanism are making contact when the key is pressed down and it is opening when you pull the key up. Unfortunately electrical is my Achilles heal. How do I determine if I have lost grounding?

  • img_1024.jpg
__________________

JakeF
1956 R69, 1976 R90S, 2008 R1200GS

Daves79x
Daves79x's picture
 Offline
VBMWMO #9030
Joined: 08/09/2015
Posts: 325
I Checked

I checked a board I have here and that set screw can only come from the board's red w/black tracer, or maybe brown (it varies) wire. That wire is the ignition 'kill' wire. So that likely your problem. You'll find that wire floating. It's right in front, so you should be able to get it back in place OK.

Dave

__________________

Dave

wa1nca
wa1nca's picture
 Offline
VBMWMO #8374
Ashfield Ma.
Joined: 09/27/2012
Posts: 403
How do I determine if I have lost grounding?

If you connect a ohmmeter to the # 31 terminal( has large brown wires) and to terminal #2 next # 31 when the key is pulled out they should show connected
Their is another connection under the connector that moves up and down and makes contact #31 and #2 when the key is removed shorting out the points to kill the engine
It is very hard to see with the switchboard in place

But I think you may be lucky like Dave says is the screw you found should hold the small brown/black or black/red to #2 terminal

Tommy

__________________

Tommy Byrnes
54 R51/3 55 R50 64 R27 68 R69US 68 Sears Allstate 250 (Puch)

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.