Joe Reeve WAT timming process

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
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(Timing At Cranking Speed 4°)
(J. Reeves)

NOTE: If your engine has the "Fast Start" feature", you must disconnect/eliminate that feature in order to use the following method. The "Fast Start" automatically advances the spark electronically when the engine first starts, dropping it to normal when the engine reaches a certain temperature.

The full spark advance can be adjusted at cranking speed,"without" have the engine running as follows.

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).

Rig up a spark tester on the #1 cylinder plug wire. 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.

It's a good idea to ground the other plug wires to avoid sparks that could ignite fuel that may shoot out of the plug holes. I've personally never grounded them out and have never encountered a problem but it could happen.

I don't know the 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 components, the engine gains the extra 4°.

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.

No need to be concerned about the idle timing as that will take care of itself. The main concern is the full advance setting.

A fellow member from one of the various marine forums suggested having water supplied to the water pump (flushette or barrel) simply to provide lubrication to impeller. A worthwhile suggestion I thought, and entered here.

Be sure to use your own engines spark advance settings, not the one I picked out of the air here in my notes.

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Fiddlefire

Seaman Apprentice
Joined
Jul 9, 2018
Messages
42
Hey Joe, thanks very much. PS I was the ebay guy the other day and good to find you!
 

Kevsmopar

Cadet
Joined
Jun 7, 2010
Messages
15
At Joe Reeves, can this timing procedure be utilized on an (E25RCTE, Rope Start) 83' Evinrude 25 H.P. O.B. w/Type II CD sensor coil? By the way, thanks for all your help, and others as well, on my Starter/Recoil thread, working great, now.:) Kevin Sr.
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Yes, I would think so as it is the same type ignition as the larger hp models. If the timing has never been touched/changed, do the test as I listed it. It should read 4 degrees less than what's called for.
 

Kevsmopar

Cadet
Joined
Jun 7, 2010
Messages
15
At Joe Reeves, you know your stuff, man. I followed your Timing (WOT) procedure as stated in this post; and I'll be darn if
(after trial and error a few times) the son of a gun worked great! Throttling up is no problem now, I installed a VW style in line 5/16" fuel filter about 6" from the fuel pump. I (took starter recoil off) used a Milwaukee 1/2" drive impact gun to rotate the flywheel, (knowing somebody will tell me not a good idea, but it worked well), as I'm holding a timing light hooked up to a jet ski battery with my L.H. and hold the timing gun with my R.H. My WOT is 30 deg. at spark adv. rubber stop; and followed it with a 26 deg. setting as you instructed (I had to make a temporary timing pointer reference on engine, as I couldn't use pointer on starter/recoil). My throttle rod collar was the main culprit as I was ruling out a spun flywheel, and other things (I'll need to pick up a new idle adjustment screw, it's worn, stripped) before I caught that and the cam to cam follower wasn't sync'd correctly either; this is probably why I had a lot of unburnt fuel coming out of the mid- to lower unit area right into the large bucket of water. Joe, thanks again for getting me and this 83' rude over the top; and now onto lower unit reseal and lube and r&r (at the least) water pump impeller or possibly whole pump assembly. :D
 
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