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Idle/Kill Switch Issue #13615
06/13/12 12:43 PM
06/13/12 12:43 PM
Joined: Nov 2008
Posts: 18
CHICAGO
JKC Offline OP
Member
JKC  Offline OP
Member
Joined: Nov 2008
Posts: 18
CHICAGO
Good morning,

I'm trying to adjust idle on the old 2GM and am running into an issue: I can get it to idle nicely around 1250 rpm. It dies around 1000. While adjusting the idle is simple, when I get it in a good running position, the kill switch physically doesn't have enough room to move to kill engine. Am I missing something, or is there better idle adjustment system/hardware out there to get this done? If you look at picture, kill knob pulls the cable on top, compressing spring all the way etc. trying to move lever back, but no matter how much adjustment is done, the hardware fitting doesn't enough room to release lever far enough to kill the engine. Any ideas? Thanks

John
Circus 60219


[Linked Image]

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Re: Idle/Kill Switch Issue [Re: JKC] #13619
06/13/12 08:30 PM
06/13/12 08:30 PM
Joined: May 2007
Posts: 2,668
Portsmouth, RI
Rhapsody #348 Online content
Past J/30 Class President
Rhapsody #348  Online Content
Past J/30 Class President
Joined: May 2007
Posts: 2,668
Portsmouth, RI
John - I get image not found on your link. The idle should be set to 850-900 rpm according to the Yanmar manual.

Re: Idle/Kill Switch Issue [Re: JKC] #13620
06/13/12 09:13 PM
06/13/12 09:13 PM
Joined: May 2009
Posts: 57
St. Margarets Bay, Nova Scotia
Groovin Offline
Senior Member
Groovin  Offline
Senior Member
Joined: May 2009
Posts: 57
St. Margarets Bay, Nova Scotia
Thats a high idle setting my 2GM idles around 900 if I remember right. Still working on hull for new paint otherwise I would check.

Re: Idle/Kill Switch Issue [Re: JKC] #13621
06/14/12 07:40 AM
06/14/12 07:40 AM
Joined: Mar 2009
Posts: 116
RI
Bob Rude Offline
Senior Member
Bob Rude  Offline
Senior Member
Joined: Mar 2009
Posts: 116
RI
John:

The cable for the kill switch should have lots of room for an adjustment. My cable was frozen from salt water and corrosion. I ended up replacing the entire unit at a cost of roughly $28.00. It's an easy install with the toughest part freeing the nut directly behind the kill switch plunger back behind the instrument panel. I don't know if this is your problem but for $28.00 it's a cheap probable fix and if it doesn't do the trick, you'll at least have a back-up kill switch cable when you need it.

Bob Rude
Mmmmm
#352

Re: Idle/Kill Switch Issue [Re: JKC] #13622
06/14/12 11:11 AM
06/14/12 11:11 AM
Joined: Nov 2008
Posts: 18
CHICAGO
JKC Offline OP
Member
JKC  Offline OP
Member
Joined: Nov 2008
Posts: 18
CHICAGO

Corrected photo link below(I hope). Advice on how to set idle lower (without motor dying) would be greatly appreciated as well. Thanks for your input.


(in photo, once the spring is completely compressed, there is no more room to pull back to kill)

https://picasaweb.google.com/lh/photo/7vpW_W9Be1a5TTmDUTe4Lv74KTWOM2wQL6ey2oxMxAg?feat=directlink

Re: Idle/Kill Switch Issue [Re: JKC] #13623
06/14/12 11:40 AM
06/14/12 11:40 AM
Joined: May 2007
Posts: 2,668
Portsmouth, RI
Rhapsody #348 Online content
Past J/30 Class President
Rhapsody #348  Online Content
Past J/30 Class President
Joined: May 2007
Posts: 2,668
Portsmouth, RI
I fixed the link for your picture in the original post with the new link you sent.

Look at the Yanmar 2GM Operations manual page 12 and 16 at this link.

First - there is a separate cable used for fuel cutoff to stop the engine. The engine should not stop using the throttle control.

Next - if you are unable to reduce the idle using the adjustment, you may have an injector problem (e.g. injector nozzle plugged so it runs very rough and dies).

You may want to pull the injectors and take the injectors to Torrenson marine (since you are in Chicago) to be pop tested, nozzles replace and shimmed. Once they are replaced, you should have an easier time adjusting the idle. It will probably run you ~ $100 if you take them to them. Make sure you ask them for a set of new insulators to replace when you put them back in the engine.

Re: Idle/Kill Switch Issue [Re: JKC] #13624
06/14/12 01:26 PM
06/14/12 01:26 PM
Joined: Oct 2009
Posts: 381
Squamish, British Columbia
NaturalHigh Offline
Senior Member
NaturalHigh  Offline
Senior Member
Joined: Oct 2009
Posts: 381
Squamish, British Columbia
Definitely masking another issue by adjusting the idle up.

I need to get my injectors in and tested/cleaned/overhauled. She isn't starting to sharp as of late.

Re: Idle/Kill Switch Issue [Re: JKC] #13625
06/14/12 10:06 PM
06/14/12 10:06 PM
Joined: Jan 2009
Posts: 75
Kailua Kona, HI
last fling IV Offline
Senior Member
last fling IV  Offline
Senior Member
Joined: Jan 2009
Posts: 75
Kailua Kona, HI
I added a cold start kit to my QM15 after doing injectors and valves. It works great in Seattle in the middle of winter.Easy installation. Price was between $200 and $300 and it starts like a gas engine. Rarly use it since doing a one way to Hawaii{18 days from Newport Oregon}. I can't find a phone number for the supplier,But I think that Gallery Marine in Seattle can find it. 206 547 2477


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