1996 50 hp adjustment question

maineiac5586

Senior Chief Petty Officer
Joined
Feb 14, 2009
Messages
770
Hi I have a new to me 1996 evinrude 50 hp 2 cylinder. Bought from original owner who said it runs great. I am going over a few things and confused about the adjustment of the idle screw. As it is set up now the roller is not lined up with the two marks on the big cam. Service manual says it should be centered between the 2 marks. The idle screw has factory orange paint in what looks like undisturbed condition. Should I leave the settings as they are or try to get the roller between the 2 marks on the cam ? Anyone seen this before ? Just looking for some inputs. Thanks
 

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boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Hi I have a new to me 1996 evinrude 50 hp 2 cylinder. Bought from original owner who said it runs great. I am going over a few things and confused about the adjustment of the idle screw. As it is set up now the roller is not lined up with the two marks on the big cam. Service manual says it should be centered between the 2 marks. The idle screw has factory orange paint in what looks like undisturbed condition. Should I leave the settings as they are or try to get the roller between the 2 marks on the cam ? Anyone seen this before ? Just looking for some inputs. Thanks
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,411
If it runs " great " , then why do you feel you need to adjust stuff.----Best to replace water pump impeller.----Test overheat horn.----Post compression test numbers and record them for future reference.
 

maineiac5586

Senior Chief Petty Officer
Joined
Feb 14, 2009
Messages
770
If it runs " great " , then why do you feel you need to adjust stuff.----Best to replace water pump impeller.----Test overheat horn.----Post compression test numbers and record them for future reference.
Yes I'm cleaning the carbs, installing a new impeller, new prop shaft seals, etc. Compression shows 165 psi on both cylinders
 

racerone

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Dec 28, 2013
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The compression is excellent !----I believe better than a new motor.----Is your gauge accurate ?
 

maineiac5586

Senior Chief Petty Officer
Joined
Feb 14, 2009
Messages
770
The compression is excellent !----I believe better than a new motor.----Is your gauge accurate ?
Yes Guage is accurate. Was a low hour motor. I did the test on a cold motor. It's been sitting for many years. I'll check it again after I've ran it for bit
 

maineiac5586

Senior Chief Petty Officer
Joined
Feb 14, 2009
Messages
770
If it runs " great " , then why do you feel you need to adjust stuff.----Best to replace water pump impeller.----Test overheat horn.----Post compression test numbers and record them for future reference.
How do I test the. Overheat horn? The temp sensor is a single wire connector for your reference
 

Diplomasta

Cadet
Joined
Feb 27, 2021
Messages
24
That mark should definitely up. If not, then something else is out of adjustment to compensate. Ignore the torque stripe and do a full link and sync by the book. Be careful not to break any of those plastic arm pieces. They are more expensive than you might expect.
 

airshot

Vice Admiral
Joined
Jul 22, 2008
Messages
5,361
Dont try to fix something until you know for sure there is a problem!!! As mentioned run it for a while, add a good dose of sea foam in the fuel to clean things out. Replace that impellor and take it for a shake down cruise
 

Diplomasta

Cadet
Joined
Feb 27, 2021
Messages
24
If link & sync is off, it can blow the motor. Do it by the book. There is a video of the procedure on YouTube.
 
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