Maximum timing advance

Thegen

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Aug 3, 2010
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29
I have a 1984 evinrude 115 and for some reason the max timing advance is not listed for this motor. The manual goes up to 60 horse or so and then stops. Does anyone know what this is suppose to be set at and if it needs to be backed off 4 degrees for today's fuel? Thanks!!
 

racerone

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Dec 28, 2013
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Factory manuals are usually very good.----Perhaps listed elsewhere.
 

Thegen

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Aug 3, 2010
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29
V-4 is at 28 degrees BTDC
Thank you so much for verifying that for me. I was 99% sure that's what it was. So I did the joe reeves method. I know other hp models of this vintage say to take 4 degrees out so it's set at 24 right now. It was over 30 when I started and seemed like it took quiet a bit of adjustment. Thanks again!!
 

kbait

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Nov 13, 2007
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If it was over 30 by joe’s method… wouldn’t end well! Good job checking it out.
 

Thegen

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Aug 3, 2010
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If it was over 30 by joe’s method… wouldn’t end well! Good job checking it out.
I just hope I did the whole sync and link procedure properly as the pick up timing took some adjustment also. It was set right at TDC (after adjusting the pointer)
 

racerone

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Dec 28, 2013
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The pick up timing is a most confusing thing.-----It is the point where throttle plates open.-----Where the timing is on a smooth running motor at idle does not matter !
 

Thegen

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Aug 3, 2010
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29
The pick up timing is a most confusing thing.-----It is the point where throttle plates open.-----Where the timing is on a smooth running motor at idle does not matter !
I agree, trying to hold it all without moving while tightening the carb linkage wasn't fun. I checked the idle rpm and set it. Held it to full advance (plugs out) while my helper cranked the motor and checked the timing. Only thing is, I wasn't able to look up to see how fast the motor was spinning while cranking. I might double check it tomorrow since that dawned on me this morning. If it's right, I set it to 20* btdc, reeves method says 4* less than spec and that tsb I read about said to back it off 4*. So I should end up at 24* btdc.
 
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