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Old 08-17-2019, 07:55 PM   #1
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City: Bainbridge Island/Petersburg Alaska
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120 lehman stop arm adjustment

For the 14 years I've owned our boat our port engine has taken awhile to start. The longer it sits without being run, the longer it takes to start-up to 30sec of cranking. Also, have to give it a lot of throttle if it's been sitting. Runs fine once it starts. I've checked numerous things over the years-timing, changed injectors, etc. Thought I would check the position of the stop arm but can't find the spec or a shop manual. Can anybody help?

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Old 08-17-2019, 08:11 PM   #2
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Here's what the owner manual says about all the naturally aspirated engines:
Check that engine stop lever is fully towards the rear (flywheel end) of engine. Set throttle to 1/4 open and start engine. Adjust speed.

Could it be that the stop soleniod is not puling the lever all the way back?
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Old 08-17-2019, 08:12 PM   #3
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Just disconnect to troubleshoot.


Seriously doubt it's that...but check to eliminate... however may be the injection pump and that adjustment or rack movement could be an issue.
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Old 08-17-2019, 08:48 PM   #4
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Quote:
Originally Posted by Russell Clifton View Post
Here's what the owner manual says about all the naturally aspirated engines:
Check that engine stop lever is fully towards the rear (flywheel end) of engine. Set throttle to 1/4 open and start engine. Adjust speed.

Could it be that the stop soleniod is not puling the lever all the way back?
My stop solenoid pulls the rod forward to stop the flow of fuel. When not activated, it goes to the rear. If I remove the arm, the lever on the pump will go back at least another inch. The rod is threaded for adjustment. I just need the specs or parameters.


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Old 08-17-2019, 08:54 PM   #5
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I think it would be full throw in either direction.



Disconnect and see if the start improves.
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