Thread Tools Search this Thread
Old 23 August 2014, 11:50   #1
HughN's Avatar
Country: UK - England
Town: Littlehampton, W Sx
Length: no boat
MMSI: 235101591
Join Date: Jan 2012
Posts: 732
My engine won't stop...

Having got peed off with an early 90's Yamaha-based Mariner-badged 30 Hp I bought a Yamaha one and have transferred starter, etc., across. It starts and runs fine - but won't shut off.

The 'stop' wire is a white one from the CDI unit. The engine should stop when this is shorted to ground - it doesn't.

Could I wire a circuit to short the pulser coil (and would I need a resistor to dump it into) or arrange to put the pulser coil open circuit?

I imagine the white wire shorts something out somewhere inside that potted CDI unit.


"Can ye model it? For if ye can, ye understand it, and if ye canna, ye dinna!" - Lord kelvin
HughN is offline   Reply With Quote
Old 23 August 2014, 11:55   #2
Country: UK - England
Town: Royal Wootton Bassett
Length: 8m +
Engine: 250
Join Date: Jul 2008
Posts: 8,041
Originally Posted by HughN View Post
My engine won't stop....
Round Britain

whisper is offline   Reply With Quote
Old 24 August 2014, 07:27   #3
RIB-Teccie's Avatar
Country: UK - England
Town: Leeds
Make: Valiant 450
Length: 4m +
Engine: Yamaha 55HP
Join Date: Jan 2013
Posts: 448
Engines can be strange. In theory the white should stop the engine when grounded. I've never tried so I can't comment. I would try installing a kill switch you know is working to the black/white wires first (at the engine). This eliminates a problem at the rest of the loom. I've never tried shorting the pulsars before, if it happened to me I used the choke to stop. If a new kill switch at the engine works, the fault can be traced to the loom, ignition or kill switch.
RIB-Teccie is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 12:08.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.