Setting timing at idle speed?

[CharlesW]

On my 1986 40hp Evinrude, I seem to be missing something when I try to set the low speed timing.<br />With my automotive induction timing light on the top plug wire, I don't seem to be able to get the timing mark to align with the 2 to 4 degrees before TDC marks on the flywheel. It reads about 2 to 4 degrees after TDC and adjusting the arm at the throttle linkage doesn't seem to make any difference. The motor starts good and seems to run fine, although not long on power. It is on a 20' Weeres pontoon that has quite a lot of seating on it so I don't expect a lot of performance. My main concern is having things set correctly so I don't fry a motor. How much throttle (rpm's) would be necessary to see any advance on the flywheel? The timing light does not show any advance from idle to probably 1500 to 2000 RPM when not in gear. I don't have a tach, so motor speed is only an estimate.<br />What I can tell you:<br />1986 Weere's 20' Sportsman with lots of seating. 4 lounges, 1 flip-flop, captain's stand and seat.<br />1986 Evinrude 40 HP, with VRO that works, no trim. Starts good, seems to run fine, although not fast. Probably about 20 mph. Didn't expect much speed with a 40 on that much weight, though.<br />Any other info that might be pertinent, I will try to add as needed.<br /><br />Charles

 

[Solittle]

Re: Setting timing at idle speed?

http://www.outboardrepairs.com/timing/

 

[CharlesW]

Re: Setting timing at idle speed?

Thanks for the link SoLittle. I had looked under the Evinrude section before I posted and had not found the information I think I am looking for. Unfortunately, I didn't find it in the "Timing" section, either.<br />I first purchased a Clymer manual and when I was unable to make any change in the timing, I figured I was not understanding what the manual said. I then purchased a SeLoc manual and still didn't get the job done. Today, I read the OMC shop manual pages regarding the setting of the idle speed timing and it pretty much follows what the two aftermarket manuals say. That seems to indicate that I am the weak link. Since there is not a lot of season left and the thing starts and seems to run OK, I think I will forget it for the present time.<br />Thanks.<br />Charles

 

[Hooty]

Re: Setting timing at idle speed?

If you adjust the max timing, the pick-up timing will pretty well take care of itself but it sounds like you've figgered that out. <br /><br />c/6<br /><br />Hooty