Mercury black max 89 stator issu

[Rjs492]

My 89 has cooked 2 stator a in 3 weeks I mean the copper is black pls help

 

[Faztbullet]

Change the rect/reg's too

 

[Rjs492]

Will def do but last year the fly wheel lost a magnet no damage but when they installed the new fly it looked different def not the same that had been there before also I did not run the boat just put it away for the winter at any rpm below 2000 all is fine as soon I run it up that's when it cooks

 

[Faztbullet]

Post a picture as if they put a 40 amp stator on a 16amp system it will melt one in a heartbeat...

 

[Rjs492]

I'm gonna put the old one back on the new on is def of a 90s model its black and newer shape orgianal was red

 

[Dukedog]

are tha flywheels tha same "thickness"? red looks more like a "flex plate" type?.. it will have tha tangs for a rope pull bolted to tha top of it... black they used looks like its "cast"?.. tha rope tangs will be cast in place on it... your motor have a water cooled regulator/rectifier?

 

[Rjs492]

Water cooled rectifer the fly wheels are def diff was thinking of put the old back on and see how it goes but they are def diff

 

[Dukedog]

they should be tha same thickness.... look inside at magnet size.. a 40 amp system will work with either tha red flex plate like tha one that came on yours or tha later model black cast... sounds more like what faz thinks only other way around maybe... 16 amp stator and 40 amp flywheel maybe?... they did make both tha 16 and 40 amp systems in '89....

or tha reg/rec could be tha culprit.....

 

[Rjs492]

Gonna pull the flywheel today to check the thickness of the magnets if they are diff will let u guys know I also check the casting number

 

[Rjs492]

They look the same thickness wis reg looks good but gonna have to do some electrical test

 

[Rjs492]

Okay def a 40 amp stator thinking it's the reg/rec can this burn up stators

 

[Dukedog]

what i figured...do you know for sure that tha stator was replaced with a 40 amp and not a 16?... should have a part number on it..

tha red one like yours is just tha first type used with tha 40 amp stuff.. its a flex plate type.. later was cast... but a 40 is a 40 is a 40 etc. they did make a slight change "inside" tha flywheel when tha 'lectronics went to tha ecm/cdm stuff.. would look at tha "kit" to do away with tha water cooled stuff in lieu of tha later two dry reg/rec stuff...

 

[Rjs492]

Okay only other question is can the reg rec cause this also was thinking heat changed the water pump last season but she does take a long time to pee

 

[Dukedog]

never seen it for myself so can't answer that for ya...... check your stator for a part number.. should be 9610 A5.

 

[Rjs492]

Okay the one that came of original part number 9610a3 that's the first one that fried

 

[Rjs492]

One more thing this mother is running on -a 16 foot checkmate can I switch to a 16 amp sys and how much would be involved

 

[Rjs492]

Alright the flywheel part number that they put on was 817632c I put the old one back on just to see and it ran fine pulled the reg/rec and tested was good