57 evinrude 18hp

[Mike Ku]

Prop turns fine when testing in a bucket but when I put the boat in the water I go no where. Seems like when under a strain the prop slips. I checked the shear pin and it was bent, not broken, so I replaced it with a new shear pin but with no difference. I go a few feet and then the motor just races off and the boat goes no where. What should I be looking for? Occasionally there would be a clicking nose, not grinding like I would suspect The gear shift is fully engaged. Any Help?

 

[Fouled Plug]

Re: 57 evinrude 18hp

Is there lots of metal shavings in the gear oil? Could be a clutch dog or bad gears.

 

[Mike Ku]

Re: 57 evinrude 18hp

Where do I look for the metal shavings? In the lower casing where the prop is located? I tried removing that the other day but could not get in, am puzzled as to how to get is apart, any suggestions? Thanks

 

[pipestone guy]

Re: 57 evinrude 18hp

Could be the rubber hub is cracked/shot. Find a prop repair place and they can fix. Shouldnt be to expensive. Good Luck.

 

[Backlash]

Re: 57 evinrude 18hp

Hey Mike, You're going to have to drain your lower unit oil to check for metal shavings/chunks. I'd bet you're going to find something there . <br />Backlash

 

[Fouled Plug]

Re: 57 evinrude 18hp

Terry A, Mike Ku's original post stated his motor had a shear pin, not a splined prop. Let's not confuse the poor guy! Mike, there should be two slotted screws on the side of the gearcase. The drain is near the prop, the vent above the cavitation plate. Remove vent, then drain and look for metal shavings/bits in the gear oil that drains out. Try to avoid a phillips head screw on the lower part of the case.it's one you want to leave in place. The vent/drain should be larger slotted head screws. let us know what you find!

 

[Mike Ku]

Re: 57 evinrude 18hp

Hi! Thanks for all your help. Ok, so I opened the lower oil drain and nothing came out. Bone dry. Not so good is it. So the answer to "is there metal shavings?"......No, there are none present. But if there was oil in it maybe there would be. What puzzles me is that if the motor is in gear, I can not turn the prop more than about a quarter turn in either direction. Would not that say that the gears are still in ok shape. I tried removing the lower casin where the prop and oil is located but boy are those screws on TIGHT. I got all but one loose. Thought if I got in there I would find my problem seeing how there was no oil in it.

 

[Mike Ku]

Re: 57 evinrude 18hp

P.S. Any idea where to find the model and serial number on this 18hp Evinrude Fastwin It looks like a 57 based on literature and pictures I have seen of this era evinrude

 

[pipestone guy]

Re: 57 evinrude 18hp

My 59 Evinrude 35hp has the shear pin AND the rubber hub on the propeller. I had the experience of it going bad. Up to half throttle goes ok. Over half throttle it revvs. but will not push boat. like the shaft is breaking free from the prop. Replaced hub and works Fine. I would sure think the 18HP would have the same setup.Mike what does the hub look like when you take the prop off? IF you see any rubber fragments or residue then I suggest that is the problem. As far as the Model and S/N check on the front of the motor on top of the transom mount should be a plate there. If not check on the block for the frost plug. (About the size of a quarter) that should have the model number on it. Hope this helps.

 

[pipestone guy]

Re: 57 evinrude 18hp

BTW also was going to mention that if it is a single hose from tank to motor and has a fuel pump it is newer than a 57. I believe 'Rude started the single line/w fuel pump in 1959.

 

[Chinewalker]

Re: 57 evinrude 18hp

Hi Terry,<br /> The model/serial is stamped in two places - on a plate on the side of the clamp bracket and on a freeze plug the size of a quarter on the rear portion of the cylinder block. <br /> As for the lower unit, you might have to invest in an impact driver. I've got one and it pops those screws loose in a second! Check the gears for wear. There are no roller or needle bearings in those units, so check all the bushings for excess slop, particularly the one under the pinion gear.<br /><br />If everything looks okay, then I'd put a seal kit in the unit (propshaft, drivehsaft and shift shaft seals) put it back together and fill it with 90wt. Hypoid.<br /><br />You may still have an issue with a spun hub in the prop, but new props are still available and decent used ones turn up on eBay all the time for under $20.00.<br /><br />Have fun!<br />- Scott

 

[jetman]

Re: 57 evinrude 18hp

This same thing happened on my 57 35 hp Lark<br />It turned out it was the hub. Thats thie first thing I'd check.

 

[Mike Ku]

Re: 57 evinrude 18hp

Thanks for the latest tips. The fuel line is a double line so it is probably pre 1959, but I will check those locations for a model #. Regarding the prop, there does not appear to be any rubber there. All I see is brass when I remove the prop. I am going to take it off and see if I can spin the brass piece inside the prop. Thanks

 

[Mike Ku]

Re: 57 evinrude 18hp

Well, I put the oil in the lower housing and put the boat in the water today with some success. Operates fine in reverse put it seems difficult to get into forward as if the linkage is not adjusted properly. I operated it from the controls on the motor itself and fought with it to get it in forward. My best success was to slip it into reverse and then into forward. If I did that I could go for about 50 to 100 feet before it popped out of gear even while holding the linkage with my hand. Any suggestions?

 

[pipestone guy]

Re: 57 evinrude 18hp

Hi Mike,<br /><br />Sounds like either the clutch dog or the forward gear is bad. The only way you will be able to tell is to tear the lower unit/transmission apart. Oh yeah I just thought of one other thing to check. Check the shift linkage on the inside of the lower unit. If the control rods are not lined up properly it wont go all the way in forward. The shift linkage on mine has a access cover with two slotted head screws. Take the cover off and you will see the inside cover. Open that up and you will see the fitting that connects the upper and lower shift linkage. I would check that first. If the lower shift rod is loose or not in the connector at the right spot, it wont shift into forward. I just remembered this from working on mine. Shifting into reverse pushes the shift rod down. Shifting forward pulls it up. So if there isnt enough to pull up it wont go into forward gear. Hope this is the solution for you.<br /><br />Good Luck and keep us posted.

 

[Mike Ku]

Re: 57 evinrude 18hp

Thanks I will check that out!

 

[Mike Ku]

Re: 57 evinrude 18hp

Hello everyone! Just wanted to thank you all for your help. I found and corrected the problem today. First I got a service manual from Iboats! That helped me over come my fear of opening up the lower gear case. After opening the unit I found that the clutch cradle and the cradle lever had been worn down so far that the forward gear was never being engaged. It appears that it had run without oil for a long time and the soft white metal on the clutch cradle wore away. Everything else was intact! I called my local evinrude dealer who had both parts still on the shelf!!!!! He also said that the cradle lever is no longer made and could not have been ordered. I am a happy boater and would not have been able to proceed so ambitiously without your help and support! Thanks again and GOD Bless America!!!