evinrude 115 timing

predator

Cadet
Joined
Sep 5, 2002
Messages
11
can anyone please tell me what the timing degree at wot is for a 1985 115 evinrude v4. i just recently bought the boat and have a manual on order but don't exspect the manual to be in by the weekend. i want to check the timing before i take it out on the water. <br /><br />i've done a search on setting the timing and came up with this.just no degree for my engine. when my manual gets here i will recheck it according to the manual. i want to get it close before this weekend and avoid damage to the engine. <br /><br />To set the timing on that engine, have the s/plugs out, and have the throttle at full, set that timer base under the flywheel tight against the rubber stop on the end of the full spark timer advance stop screw (wire it against that stop if necessary). <br /><br />Rig a spark tester and have the spark gap set to 7/16". Hook up the timing light to the #1 plug wire. Crank the engine over and set the spark advance to 4° less than what the engine calls for. <br /><br />I don't know full spark advance setting your engine calls for, but to pick a figure, say your engine calls for 28°, set the timing at 24°. The reasoning for the 4° difference is that when the engine is actually running, due to the nature of the solid state ignition componets, the engine gains the extra 4°. <br /><br />If you set the engine to its true setting at cranking speed, when running it will advance beyond its limit by 4° which will set up pre-ignition causing guaranteed piston damage! You don't want that to take place. <br /><br />No need to be concerned about the idle timing as that will take care of itself. The main concern is the full advance setting. <br /><br />Be sure to use your own engines spark advance settings, not the one I picked out of the air here in my notes.
 

Hooty

Rear Admiral
Joined
Oct 2, 2001
Messages
4,496
Re: evinrude 115 timing

My Clymer sez on a '85 115hp to "see timing decal on engine" for full advance timing.<br />Another way you can time it on the muffs is with a timing light and disconnect the linkage to the timing ring and with the engine idling, move the timing ring to the stop by hand (finger) and see where it's firing. Set timing 2 or 3 degs. retarded from where full advance is.<br /><br />c/6<br /><br />Hooty
 

predator

Cadet
Joined
Sep 5, 2002
Messages
11
Re: evinrude 115 timing

thanks Hooty but i checked and did not see a decal on the motor on what the full advance timing should be set on. i will ask the local evinrude machanic tomorrow and see what degree he says. thought i would give it a try here first. thanks again for your help.
 
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