Evinrude 50 Hp won't go in gear

[Centaur420]

I was out today and when I tried to put the engine into gear it wasn't going into gear. The motor was reving up fine but it just was wasn't catching, the hand throttle when and the motor went into gear but it wasn't catching the prop, to make it turn. Does anyone have any schematics or suggestions?

 

[tx1961whaler]

Re: Evinrude 50 Hp won't go in gear

What is the model number of the motor?

 

[Centaur420]

Re: Evinrude 50 Hp won't go in gear

Not sure what model number. It's mechanical I use to hear a clunk when it went into gear, I still hear something but not as loud, it just doesn't wnat to turn the prop. The prop turns fine by hand in neutral but when it's in gear it will turn half a turn then jam up then it will go another half turn and jamms up.

 

[jtexas]

Re: Evinrude 50 Hp won't go in gear

"Not sure what model number"...can't help ya if we don't know what motor we're talkin bout. model number is usually on the port side engine mounting bracket. Do you at least know what year? Electric start? Any other symptoms?

"when it's in gear it will turn half a turn then jam up then it will go another half turn and jamms up."

this is a little confusing since you said it "won't go into gear". try this again, but watch the flywheel to see whether it turns when you spin the prop -- the "jamming" might be nothing more than normal engine compression. Try it with the spark plugs out, see if it's any different.

"it just doesn't wnat to turn the prop" is a little confusing as well. How do you know what it wants to do, does it talk to you? --jus kiddin--what I mean is try to describe what actually happens when you attempt to shift.

 

[Centaur420]

Re: Evinrude 50 Hp won't go in gear

The model number is E50BELCD when the engine is running I put it in gear and I don't hear the clunk I use to, the outboard is running fine but the prop just doesn't turn when in gear. When it's running I put it neutral it will spin just a little bit. Now when the motor if "off" I put the engine in gear remember the engine is off I grab the prop with my hand it goes maybe half turn then stops if I turn it hard it will go past the half point then fetches up on the next half turn. It's almost like a gear in the lower half of the outboard is slipping, almost like it wnats to catch put has been rounded too much. Any thoughts.

 

[5150abf]

Re: Evinrude 50 Hp won't go in gear

Sounds like it could be a clutch dog "grabs every half turn" or teeth missing off the forward gear and gear chunks are getting caught inbetween the teeth.

Disconnect the shift cable at the engine and see if you can get it into gear or see if it does the half turn thing.

Does reverse work like it should, remember to pull the plugs, it will help the engine turn over easier.

Stay with us here , we will get this sorted out.

 

[tx1961whaler]

Re: Evinrude 50 Hp won't go in gear

Deleted --wrong Thread

 

[jtexas]

Re: Evinrude 50 Hp won't go in gear

it's a 1986 model.

Rounded clutch dog I kinda think would be clattering up a storm when you try to shift with engine running.

When you put it in gear engine off and spin the prop, does the flywheel turn? The reason I asked about this before is, because the flywheel should turn when you spin the prop. It's a clue as to what's going on.

Because you have a 2-cylinder engine, you compress one cylinder with each half-turn. That would make it get real hard to turn after a half turn, then again after another half-turn. That's why I suggested trying it with the spark plugs out -- then you don't have to compress the cylinders and you won't get that effect. It's a clue as to what's going on.

There are a couple approaches to trouble-shooting a problem. One is to guess at what's wrong, and randomly replace parts until it starts working. The other is to experiment and try to determine what's causing the problem, and then just fix what's wrong. There's a couple more things you could try, if you want to, just ask.

 

[Centaur420]

Re: Evinrude 50 Hp won't go in gear

Did you want me to start the engine then take out the spark plugs, or am I leaving the engine off when I take out the spark plugs and just trying to spin it by hand?. The reverse did work the first time I fired it up then the second and third it wouldn't turn again. I am not completely sure what the flywheel is this is my first boat I did take the prop off and tried to turn what was left inside a rod with grooves in it but the same thing occured I am not sure if that is the flywheel.

 

[jtexas]

Re: Evinrude 50 Hp won't go in gear

ok no problem.

you don't want to be taking the plugs out of a running engine.

The flywheel is that round piece with gear teeth on the edge, sitting on top of the engine. When the motor's running, the flywheel is spinning.

Engine off, spark plugs out, motor in gear, turn the prop with your hand and observe the flywheel. Alternatively, turn the flywheel with your hand and observe the prop. One shouldn't turn without the other. The flywheel will go round 2, maybe 2 1/2 times for each revolution of the prop -- depends on your lower unit gear ratio which I don't know right off hand, but that gives you an idea of what to expect. If one turns with the other, then it's in gear all right.

The motor doesn't have a slip clutch -- when you put 'er in gear, you just slam a spinning clutch dog into a stationary one. This is why your symptom doesn't sound to me like worn dogs.

this is what the clutch dog looks like -- it meshes with the backside of the drive gears

Shifting at RPMs over 1000 or so will wear out the clutch dog as will shifting too slowly -- if you hear grinding when you shift, you're doing it wrong -- shove it into gear with conviction, where you hear a good satisfying "clunk".

Drain the gear oil. Let the first few ounces sift through your fingers, looking for metal fragments. Small amount of metal shavings on the drain plug magnet is normal, but bigger pieces means trouble. Also notice whether the oil has a milky or streaky appearance, indicates water is penetrating the seals.

The propeller has inner and outer hubs separated by a rubber bushing, which is designed to absorb the shock of shifting and any impacts with underwater objects. The bushing is pressed in under tremendous pressure but it can start to slip when you put a load on it.

paint or score a line across the inner & outer hubs and the bushing, put the boat in the water, crank the engine, put it in gear and rev it up. probably can do this with the boat on the trailer. look to see if your marks are still lined up. if not, take the prop to a prop shop to be "rehubbed". not too expensive.

if any of this is unclear, just ask.

 

[Evinrookie]

Re: Evinrude 50 Hp won't go in gear

I'm not familiar with your motor Centaur but I had a similar problem recently.

http://forums.iboats.com/showthread.php?t=267730&highlight=80hp+won't+shift

Check out where I finally got it working. Maybe it's something as simple as your shift cable is out of adjustment.

Keep us posted.

 

[Centaur420]

Re: Evinrude 50 Hp won't go in gear

I grinded teeth off of some gears I have to get it look at by someone with a little more knowledge than myself thanks to everyone.