1988 force 50 i need to replace impeller please help???

[DPSALSERO]

i have a 1988 capri with a marine force 50 .it needs a new impeller and or thermostat. any help on how to replace them ? i know were the impeller is by searching on the internet . but were's the thermostat, and how do i replace the impeller . ive read a few threads and kinda figured out how to do it but were is the trim tab screw i keep reading about that i have to remove?or what is it? please any help will be appreciated ? i need instructions on how to replace both parts .my kids are desperate to get this boat in the water. Thanks

 

[bowhuntrrl]

Re: 1988 force 50 i need to replace impeller please help???

You need to buy a repair manual, it's a good investment. Clymer is better than Seloc, you can find them on IBoats and also Ebay.

 

[baxtr]

Re: 1988 force 50 i need to replace impeller please help???

You need to buy a repair manual, it's a good investment. Clymer is better than Seloc, you can find them on IBoats and also Ebay.

Very good advice, not good to try any repair without a manual.

trim tab is the small fin behind the propeller most likely not pointing exactly straight, or the exhaust snout (same location) should be a bolt under or inside it. you will have to disconnect the shift shaft, do not remove the pivot screw. pump housing will be on top of the lower unit after you drop it down, check the pump housing and wear plate for wear, slide new impeller onto shaft, press down on the pump housing while turning the driveshaft clockwise, do not spin backwards, ever. You can put some grease in the pump housing so the impeller slides in better. T stat should be in a housing on the top/back of the powerhead, mine is just a square box above the top cylinder, 4 screws and a gasket.


Don't try it without a manual though, and lean toward the clymer, I have the seloc and it has many discrepancies and is sometimes vague.

 

[DPSALSERO]

Re: 1988 force 50 i need to replace impeller please help???

THANKS FOR THE INFO .
OK I WAS ABLE TO TAKE THE LOWER END OFF AND THE IMPELLER IS BRAND NEW .I PUT EVERY THING BACK TOGETHER AND EVERY THING WAS FINE I STARTED THE ENGINE AND THE ENGINE WAS RUNNING GREAT AS IT SHOULD FOR ABOUT 15 MINUTES IT WAS SPRAYING OUT OF THE VENTS AS IT SHOULD BUT THEN IT OVERHEATED AGAIN. DOES ANYONE NO IF THIS 1988 50HP FORCE HAVE A THERMOSTAT I'VE BEEN TOLD THAT SOME OF THESE ENGINES DONT HAVE A THERMOSTAT

 

[baxtr]

Re: 1988 force 50 i need to replace impeller please help???

serial number?

 

[baxtr]

Re: 1988 force 50 i need to replace impeller please help???

look at part number 23


http://www.crowleymarine.com/mercury_parts/1272/90.cfm

 

[DPSALSERO]

Re: 1988 force 50 i need to replace impeller please help???

Thanks Again
Ok I Found The Thermostat It Was Staring Me In The Face. Does Anyone Know How To Test It .i Put It In Boiling Water And Nothing Happen? Im Starting To Believe This Is My Problen Any Suggestions? Thanks.

 

[DPSALSERO]

Re: 1988 force 50 i need to replace impeller please help???

Can I Run The Engine Without The Thermostat?

 

[roscoe]

Re: 1988 force 50 i need to replace impeller please help???

Don't run with thermostat.
It will run cold and cause you grief.

 

[baxtr]

Re: 1988 force 50 i need to replace impeller please help???

don't run without t-stat!

 

[DPSALSERO]

Re: DO I REALLY NEED THE THERMOSTAT?

Re: DO I REALLY NEED THE THERMOSTAT?

I Live In Florida I Only Use My Boat In Lakes And The Water Is Pretty Warm Most Of The Time. Is It Really Necessary To Have The Thermostat

 

[baxtr]

Re: DO I REALLY NEED THE THERMOSTAT?

Re: DO I REALLY NEED THE THERMOSTAT?

I Live In Florida I Only Use My Boat In Lakes And The Water Is Pretty Warm Most Of The Time. Is It Really Necessary To Have The Thermostat

t stat is under 20 bucks for your motor, and I see it as 130 degree stat. so unless your boating in 110 + degree water, I would spend the 20 bucks.

 

[DPSALSERO]

Re: 1988 force 50 i need to replace impeller please help???

Thanks To All Who Replied I Replaced The Thermostat And My Boat Is Running Great Not The Fastest But Its Mine And Its Running Great .

My Boat Is A Poor Mans Yacht!!!!!!!!!:d