Model 402 Dies?

[warr]

My son just purchased a Merc 402 with a jet pump on it. The motor has not been run for awhile and dies after about 5 to 10 minutes on a step at WOT!

He says it stops instantly just like hitting the kill switch! It will not start for about an hour after it dies?

The motor is a manual start! It has good spark and starts with just a couple pulls normally!

He just changed the ignition box and I believe was going to change the stator.

He did notice when changing the ignition box that some of the wire insulation was cracking to the stator.

Any suggestions?

 

[Laddies]

Re: Model 402 Dies?

Ck the mercury switch by unhooking it and in some cases the cracked wires can be repaired with liquid vinal

 

[warr]

Re: Model 402 Dies?

I believe he already tried that! I will check with him! The motor did come with a manual!
Thanks.

 

[Texasmark]

Re: Model 402 Dies?

Ignition coils do that. The stator may only go to your rectifier, regulator (if it has one) which shouldn't have a thing to do with it, but your ignition trigger has to come from somewhere and a coil under the flywheel works for that. Otherwise you have some silicon getting hot and need to reapply thermal compound under any plastic epoxy filled "things" in the engine compartment that are screwed to metal plates or to the engine block. So there are several places you'll have to look.

Mark

 

[warr]

Re: Model 402 Dies?

Hi Mark,
You do not believe it is the stator? I know he already changed the ignition box!
The coils could be doing this when the engine warms uP?

Wayne

 

[Texasmark]

Re: Model 402 Dies?

I have had numerous instances where ignition coils failed after a period of time on cars and trucks, agricultural farm equipment, and boat motors.

I never dissected one to see why/how, but they do. The terminals (internally) could open or the varnish insulation on the windings could wear off allowing for a shorted turn. A shorted turn (one) can kill a coil. It's a magnetic phenomenon thing.

I remember several different occasions (different equipment....all of it old :% ) where I started out on a fishing trip and everything was running like a top and all of a sudden the engine died and I couldn't get it restarted. Replacing the coil fixed it every time I had that problem. Also mechanic'd on at least 2 newer engines, belonging to friends, one OMC and the other Merc and the power pack (with coil to plug wire coming out of it) fixed her.

Mark