need ohm resistance of your stator

[jbp84]

i have a 1998 force 75hp engine with the "red stator". by service manual a good stator between the grn/wht wht/grn wire is 500-600 ohms, mine is reading 698 ohms i purchased another stator checked it as soon as it hit the mail box and reads 720 ohms. if someone has a force with the red stator who dont mind checking there ohms reads and letting me know i sure would appreciate it, id paypal you some money just for doing it at least. i know a stators either good or bad ive beat my brains out chasing a skip with new plugs,swapping out coils with a new one i bought,fuel pump rebuild,electrical test on the trigger (tested good) the only thing that isnt new is the fuel lines and bulb and i have not tried ethanol free fuel yet. oh i removed the reeds they were new from previous owner had them replaced one broke. and compression is 120 on all eight cylinders

 

[my1stboat1]

Re: need ohm resistance of your stator

75 hp motor with 8 cylinders ?? is that a misprint... By the way i have an 88 85hp force and the white/green wires on the stator ohm out and 477 i dont know if this helps you...



i also believe that the 600 ohms and 720 ohms your seeing wouldnt be a bad stator as long as your not seeing 10k ohms which is an open in the windings..

 

[jbp84]

Re: need ohm resistance of your stator

Sorry its a 3 banger. Everyone says a stators good or bad no in between its so intermittent it may run ok then it starts breaking up like a plug wire,plug on a car I've put champs in it and ngks and swapped a new mercury coil around on it

 

[Robert D]

Re: need ohm resistance of your stator

Stator is good....keep the old one for a spare. So whats your motor doing? Misfiring, not charging, or what?

 

[jbp84]

Re: need ohm resistance of your stator

Its a intermittent misfire when planing out under load it breaks up and wot you can hear it missing wot it runs runs 4700-4900rpm gps 29-30mph that's it. With seafoam additive once it has ran ran 35mph. I've had other friends in boat who own boats so they could see and maybe throw another rock it eveyone says same thing if it were fuel concern or carb it act up all the time not just intermittently like electrical or ignition related. Its charging good I live by a small local lake I charge crank battery once week I go out two or three times the volt gauge usually stays 13v-13.5

 

[pnwboat]

Re: need ohm resistance of your stator

Try replacing the primer bulb. It's relatively cheap and they do go bad.

That motor uses the Mercury CDM ignition system and it's pretty simple and reliable. Sounds like you've eliminated all of the main electrical components. Coil/CD assy, stator, trigger etc. I would assume you've looked at flywheel magnets. Sometimes they break and fall out of place or get thrown out? The only other thing to double check is the coil ground connection. All of the coil grounds are tied together to the coil mounting plate with one bolt. There is another wire under that bolt that goes to the engine block. Make sure you have a good ground connections at all ground attachment points. I believe that there is a service bulletin that adds an additional ground wire from somewhere on the mounting plate to the engine block. Not 100% sure about that though. But kind of makes sense.

 

[jbp84]

Re: need ohm resistance of your stator

Yes I've speculated engine grounds I've tighten them all and cleaned them. I know this motors been torn down the head bolts are scratched probably when the reed valve broke. I check to make sure the ignition plate is tight since that where your grounds bolt to. I want to swap to the new grey line blue lettering and new primer that's all I know

 

[jbp84]

Re: need ohm resistance of your stator

update last night i put the stator on i purchased it had three different arrows on it on which way to position it, for the 70-120 force the arrow was to the rear i noticed that the harness was one hole clockwise past where the original stator was i was like maybe the other one was positioned wrong from the start. so i got everything put back together the motor fired in the driveway i headed off to the lake in the dark, yes the dark to do some night fish. i drove down the lake 5 minutes or so no change in running condition still intermittently missing then i shut it off began fishing i then smelt a burning smelling like melting wires not thinking to much when i got to leave motor did not start i got boat home the voltage regulator had melted and driped some off the plastic and smelled burnt. the stator has color coated wires and only goes one way im thinking what the heck happen.

since the voltage regulators burned now should i back my old stator on and replace the regulator or replace both new?

 

[pnwboat]

Re: need ohm resistance of your stator

I would OHM out the replacement stator to make sure it's OK. If it is OK then replace the regulator. On some of the older Force motors that use the rectifiers, if the rectifier is bad, it can cause ignition system problems. Maybe your regulator is the cause for your intermittent miss?

 

[jbp84]

Re: need ohm resistance of your stator

Well I've ohm it out by test its ok but shouldn't the engine start is the voltage regulator is unhooked. Im just worried if I put another regulator on it will burn it up to

 

[pnwboat]

Re: need ohm resistance of your stator

Yes, the motor should start with the regulator unhooked (make sure the gray tach lead is also unhooked). It's one of the tests to trouble-shoot the regulator. I looked back at some of my trouble-shooting guides and it does suggest unhooking the regulator to test for a high speed miss. I'm beginning to think maybe your regulator is the problem for the miss. Regardless, sounds like it's definitely toast now. The part number for the regulator should have a 5279 in it. Example 174-5279. I wouldn't worry too much about burning it up. There should be a fuse on the CDM mounting plate that protects it against damage.