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Marc Auslander
 
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Default Yanmar 2GM won't run at top speed - not the prop

I'm pretty sure the prop is NOT the problem. I've looked at it in the
water, and its clean. And its the same prop that got to full speed
last year. Should have put that on my initial list - sorry and thanks
for the reminder.
--
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RichH
 
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Default Yanmar 2GM won't run at top speed - not the prop

Stuffing box too tight ?!!

Marc Auslander wrote:
I'm pretty sure the prop is NOT the problem. I've looked at it in the
water, and its clean. And its the same prop that got to full speed
last year. Should have put that on my initial list - sorry and thanks
for the reminder.


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lefty
 
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Default Yanmar 2GM won't run at top speed - not the prop

RichH wrote:

Stuffing box too tight ?!!


shouldn't it put out black smoke if it is getting plenty of fuel, but can't
reach rpm because of load?
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Richard Kollmann
 
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Default Yanmar 2GM won't run at top speed - not the prop

Marc Auslander wrote in message ...
I'm pretty sure the prop is NOT the problem. I've looked at it in the
water, and its clean. And its the same prop that got to full speed
last year. Should have put that on my initial list - sorry and thanks
for the reminder.
--


Loss of RPM could be an indicating problem caused by oil on the fly
wheel and tach transducer.
With the engine warm and transmission in nutral advance the throuttle
to full RPM 3400. If the engine does not reach the governed setting
the problem is in the indicating system and not the engine.
If the problem is the engine check the exhaust elbo for reduction in
opening. To check elbo remove large hose from elbo and slide two
fingers up inside. If two fingers won't fit through at the top replace
the elbo.

From the author of books on boat refrigeration
http://www.kollmann-marine.com
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Jere Lull
 
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Default Yanmar 2GM won't run at top speed - not the prop

Marc Auslander wrote:

I'm pretty sure the prop is NOT the problem. I've looked at it in the
water, and its clean. And its the same prop that got to full speed
last year. Should have put that on my initial list - sorry and thanks
for the reminder.


How about the boat speed? Is it the same or nearly? You *are* doing
this with a moving boat? (Ours is limited while at the dock though we
get our 3500 target while moving.)

Other than that, from the list that you first gave, it sure sounds like
when we had a mostly plugged fuel filter..... The engine would wind up
to a certain point and no further. In our case, advancing past that made
the revs drop fairly quickly, killed the engine, and sucked air in, but
you might have a tighter system or less constriction...

--
Jere Lull
Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD)
Xan's Pages: http://members.dca.net/jerelull/X-Main.html
Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/



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