'88 Force 15 "Where's the thermostat?"

rokitjon

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Aug 29, 2016
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Dog gone it's been tough trying to find info on this motor!
Anyway this motor has been in the corner of my garage for 12 yrs. Finally determined to get it running come hell or high water.

Enter hell and high water!
Problems were no fire and the carb was roached. I'd cleaned the points really well but no spark. Thought it was the coils, they tested out of spec but talked to a guy that said to polish the points like new and oddly that did it. I get strong fire now! Never saw points act like that before.

As new as the motor looks I was surprised to find a badly corroded carburetor, to the point I needed a replacement. Next thing I learned was you can't find a replacement - ANYWHERE!! But I lucked out after much searching to find a close match - the subject of another post - and it works! I got her running, and running good too!

NEXT PROBLEM - I'm not getting any cooling water coming out of the exhaust. Want to check the thermostat first but can't find it. Can't find a reference to it on the Net or in YouTube video's. I have the service manual but it looks nothing like what I have. So, can someone tell me where this thing is??

Here's a picture of the manual illustration compared to the motor
 

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racerone

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Dec 28, 2013
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The second picture appears to show where it should be.----But folks have been known to leave them out.----Agreed it needs a new impeller after sitting all these years.
 

rokitjon

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Aug 29, 2016
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OK an impeller. Got it.
Now, can someone tell me where the thermostat is - or was.
The parts breakdown shows it bolting to the lower housing but the actual housing is a one piece deal with the exhaust port cover being part of the housing, and cannot be removed.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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not all motors came with thermostats

lack of flow is from your impeller being smoked.
 

topgun3690

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May 7, 2019
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Call Franz Marine Service.....he can answer your question and probably has the parts if you need em.
 

topgun3690

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Franz has pulled me from the fire a few times.....Chrysler/Force is what he does. Great guy....816-966-8085 Tue-Fri 10 to 6 Central time.
 

jerryjerry05

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May 7, 2008
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No thermo on the 88/15.
The parts diagrams might show it has a place for it but I've never seen one in there.
 

rokitjon

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Aug 29, 2016
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No thermo on the 88/15.
The parts diagrams might show it has a place for it but I've never seen one in there.
That's interesting...maybe the thermo shown in the manual is for the 9.9.
The manual covers 88-92 for the 9.9 & 15 so the thermo might be used on later 15's? The manual doesn't specify.
Anyway I'll get to work on the impeller today
 

Scott Danforth

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That's interesting...maybe the thermo shown in the manual is for the 9.9.
The manual covers 88-92 for the 9.9 & 15 so the thermo might be used on later 15's? The manual doesn't specify.
Anyway I'll get to work on the impeller today
Is it a factory manual or a seloc manual
 

rokitjon

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Aug 29, 2016
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Is it a factory manual or a seloc manual
It's a factory manual.
I've got the lower off and the impeller looks pretty good after all these years. Looks like I could have flushed the bottom end and got the pump working as there was some trash in the plumbing, but no biggie, I'll feel better inspecting and resealing it.
 

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jerryjerry05

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May 7, 2008
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You took it apart and didn't change it?(impeller)
The vanes can look good but can be soft/weak and not pump enough water.
 

rokitjon

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Aug 29, 2016
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You took it apart and didn't change it?(impeller)
The vanes can look good but can be soft/weak and not pump enough water.
I won't change it until I go back together with the assembly...
Just because I said it looked pretty good didn't mean I was going to reuse it....give me a little credit here...damn
 

jerryjerry05

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I'm not surprised anymore on what people do or don't do.
From what you said?? it sounded like you were going to reuse it.
 

rokitjon

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Aug 29, 2016
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I'm not surprised anymore on what people do or don't do.
From what you said?? it sounded like you were going to reuse it.
Yeah you got a point there. I've been wrenching for 47 yrs and seen my share of goofy stuff. None of it I'd take credit for!
 
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