50 force running slow

[fish_addict707]

took it to the fleet ran great then on the way back it started going slower..

so far, ive changed out the spark plugs and a crack tube

impeller and water pump

my prop should come in today..

here are some pictures let me know if you guys see anything wrong on my lower unit

in this picture, i noticed that there are two missing screws when i took off the prop.. whats that for?

is it spun?? i dont know how to tell.

the piece that was on here was cracked so i just took it off, what was this piece for?

again when i took it apart, i noticed that knick.. is this bad? does this mean the previous owner messed with it before? what could they have done, fixed, or replaced? any suggustions will help alot, thanks again fellas

 

[eurolarva]

Re: 50 force running slow

When the motor went slower would it rev high just go slow or it sound like the motor had no power when it was going slow. If it would rev high and go slow I would guess your prop is shot. A spun hub is not something you would be able to see or test at home. A 50 hp had a pretty strong hole shot and they had a tendency to destroy props. Better to ease into full throttle instead of gunning it. If there is no oil leaking around that nick I would not worry about it, unless when you turn the prop by hand when the motor is in neutral and it does not spin freely without noise in both directions.

 

[Frank Acampora]

Re: 50 force running slow

The piece you removed is the exhaust snout. If yiou don't replace it, exhaust will foul and vent the prop. Some engines used a zinc compound exhaust snout as a corrosion inhibitor. These will normally pit and corrode with use and are considered a regular maintenance replacement item.

Your prop shaft gland has part of it broken, but the part that is broken is usually considered the "weed cutter." No harm will come from running it this way. The two missing screws are not missing. Those two holes are for a puller to easily remove the prop shaft gland.

The only way to tell if the prop is spun is to run it. Mark the back with a couple of lines from prop shaft out, with magic marker. If the line has shifted after running, then the prop is spun.

 

[fish_addict707]

Re: 50 force running slow

When the motor went slower would it rev high just go slow or it sound like the motor had no power when it was going slow. If it would rev high and go slow I would guess your prop is shot. A spun hub is not something you would be able to see or test at home. A 50 hp had a pretty strong hole shot and they had a tendency to destroy props. Better to ease into full throttle instead of gunning it. If there is no oil leaking around that nick I would not worry about it, unless when you turn the prop by hand when the motor is in neutral and it does not spin freely without noise in both directions.

when the motor went slower it reved up higher..when i turn the prop by hand in neutral it only turns about an inch in both directions and itll stop. itll move slowly when im not guning it. if i gun it, it gets loud.. sounds like im reving it in neutral

 

[fish_addict707]

Re: 50 force running slow

The piece you removed is the exhaust snout. If yiou don't replace it, exhaust will foul and vent the prop. Some engines used a zinc compound exhaust snout as a corrosion inhibitor. These will normally pit and corrode with use and are considered a regular maintenance replacement item.

Your prop shaft gland has part of it broken, but the part that is broken is usually considered the "weed cutter." No harm will come from running it this way. The two missing screws are not missing. Those two holes are for a puller to easily remove the prop shaft gland.

The only way to tell if the prop is spun is to run it. Mark the back with a couple of lines from prop shaft out, with magic marker. If the line has shifted after running, then the prop is spun.

thanks for the info.. how much is that peice normally?

 

[eurolarva]

Re: 50 force running slow

Do as Franks says and mark a line on the prop to the prop nut with a sharpie. When motor revs check the line and see if it still lines up if not prop is spun. It can be fixed by a prop shop or you will have to buy a new prop. You can google spun prop if you are not sure what this means.

 

[Frank Acampora]

Re: 50 force running slow

I mis-posted. See the post on RTV.

 

[fish_addict707]

Re: 50 force running slow

so i put the new prop on and when i turn it by hand, it squeaks like rubber is twisting.. whats that mean? is that soppose to happen?

 

[Frank Acampora]

Re: 50 force running slow

Nothing internally in the lower unit will squeek. Most likely it is a dry seal.

 

[fish_addict707]

Re: 50 force running slow

so ive replaced everything water pump, impeller, and "new" used prop and its still running slow.. it will start up and when i put it in gear, itll run. i put more throttle and it gets loud, still running slow..and sputters.. when i spray carb cleaner in the carb it quiets down for a few seconds.. whats going on with it?

 

[Banditz]

Re: 50 force running slow

you are having the exact same issue i am right now. Your exhaust snout is the friggin problem! I just oredered mine...it vents the prop and thats why it just revs...Here is the part I am pretty sure. but do your own research and hopefully you'll get her fixed.

http://www.marinepowerservice.com/BoatingStore/browse_detail3.cfm/productID/44056.cfm