69 evinrude 18 hp no forward motion.

[B STROH]

big thanks for this forum and hope you all can help me out.
first time boat owner and not the greatest machanic but do have access to people who are grease heads and could help me out......

on to the problem at hand .
toook the boat out today for some fishing (new booat only owned 2 mos tops have done no work except for adding gas and cecking spark plugs). shut the boat off for a drift and when started it up threw it into gear went about ten feet and then Pop it comes out of gear and the just starts reving like crazy.
the boat goes into reverse and engages. can put in forward but just aidles up.

Hopeing you guys can give me some places to start trouble shooting.
And after researching today i have realised that my water pump is probably not working cause theres no water squirting out the back.
So i fiigure if im doing all this i should probably do a tuneup of some sorts.

Im also looking to just improve my knowledge on Out boards as i dont think this will be my last one LOL( last one this old probably ).

any help is much appreciated.

B stroh
Brennan T

 

[mikesea]

Re: 69 evinrude 18 hp no forward motion.

ON THE SIDE OF THE MIDSECTION OF THE ENG.i THINK THE STARBORD SIDE WILL BE A PLATE WITH 2 SCREWS,REMOVE THE PLATE,YOU SHOULD SEE A BRASS SHIFT LINK WITH 2 SCREWS.i THINK YOUR SHIFT LINK HAS BECOME DISENGAGED.yOU NEED TO ATTACH THE SCREWS ON THE LINK BY ASSURING THE SCREWS PASS THRU THE LINK AT THE POINT WHERE THE NOTCH ON EACH SHAFT ALLOW THE SCREW TO PASS.iTS POSSIBLE IT WAS PUT TOGETHER WRONG AND THE SCREWS AND LINK HAVE BECOME STRIPPED.oR PERHAPS THEY JUST MISSED THE NOTCH.kINDA SELF EXPLANATORY WHEN YOU SEE IT.yOU MIGHT WANT TO DROP THE WHOLE LOWERUNIT AND CHANGE THE IMPELLER AS YOU LOOK FOR THE TROUBLE

 

[david_r]

Re: 69 evinrude 18 hp no forward motion.

i have a '64 18hp evinrude and its a great little motor.

im not sure when they changed them but mine has a shear pin for the prop...........it might be that yours is sheared and for some reason it is catching in reverse......it happened to me....and after a little bit it quit going in reverse.

if it has a hub type heres another test

http://forums.iboats.com/attachment.php?attachmentid=17835&d=1221224083


i could also give you a lot more interesting things to read or you can go to the frequently asked questions or faqs...............lots of good stuff in there as well as running searches for similar problems.


you can also go to googlebooks.com and get access to partial service manuals.........although your own copy is a must if you are going to work on it yourself.


welcome to iboats.......great bunch of people on here and very knowledgeable.

 

[B STROH]

Re: 69 evinrude 18 hp no forward motion.

i have a '64 18hp evinrude and its a great little motor.

im not sure when they changed them but mine has a shear pin for the prop...........it might be that yours is sheared and for some reason it is catching in reverse......it happened to me....and after a little bit it quit going in reverse.

if it has a hub type heres another test

http://forums.iboats.com/attachment.php?attachmentid=17835&d=1221224083


i could also give you a lot more interesting things to read or you can go to the frequently asked questions or faqs...............lots of good stuff in there as well as running searches for similar problems.


you can also go to googlebooks.com and get access to partial service manuals.........although your own copy is a must if you are going to work on it yourself.


welcome to iboats.......great bunch of people on here and very knowledgeable.

thanks for the responses guys much appreciated
Just pulle dthe prop and the shear pin is busted in three places and worn down to a conical shape on one end, it is also missing the washer that the manual says must be there so i will have to replace that.

Mike sea i did take the plate off you speak of they call it a window i think LOL, but i saw nothing brass just mad amounts of grime and dirt I did make out the connection you were talking about i was just saying its real dirty LOL. should this be serviced the engine was running strong B4 this incident.

so a couple more ????
#1...Were should the water pump be spitting/streaming the water out on this engine, i would think the exhaust area in the upper part of the lower unit , but there is also this other exhaust it looks like just above the prop on the lower unit. could this be it??? and if so how do i check if the pump is even working the engine had never over heatd or ran as if it was hot(but again iam a total novice/noobie).

#2 My engine # is 18902B
E04985
there was a 12/11 prop on there is that correct for this motor on a 14ft tin boat.

thanks glad this resource exist much respect.


PS were do i get a shear pin and can someone recommend a basic style maintenance/tool kit or list .

thans again
B stroh

 

[samo_ott]

Re: 69 evinrude 18 hp no forward motion.

The exhaust comes out in 2 places that you mentioned. Halfway down the rear leg is where it mixes with the water from the cooling system and comes out as a spray. If water is not coming out there you have a water pump issue.

Another way is to feel the head around the spark plugs. You should be able to touch it for a few seconds when it has just run hard . It will be quire warm but will not be hot or burn you. You'll know right away the difference. Hot will be smoking hot and will scald you. Or splash water droplets on the head. if they sizzle off it is too hot. Also if there is any paint peeled off the head it has overheated.

Don't run the engine if the is not spraying water. It will burn out in minutes.

 

[B STROH]

Re: 69 evinrude 18 hp no forward motion.

I am tryin to drop the lower unit so that i can replace the waterpump, the lower unit will not drop. THE MANUAL SAYS THAT THE WATER HOSe MAY GIVE ME a problem (oops caps lock) But this being my firs time i am being very fragile and dont know how much force to use. Ive already undon the lower shift coupler screw this rod should drop also >>> correct???.

the lower unit is hanging down about 3/4 inch.

any suggestions
thanks>

B

 

[B STROH]

Re: 69 evinrude 18 hp no forward motion.

So i got the lower unit off , the drive shaft stayed up in the power head and the shift rod cameout is this correct ????

the water pump looks to be ok , so why would my boat not be spitting water??/

Im looking over the water pump and it seems to be fine , should i replace the housing since i have a new one or should i store it for a rainy day type deal.
What exactly does a worn impellar look/feel like???Im replacing regardless just curious to know if mine is worn out
should there be a gasket below the baseplate on the water pump?the water pump did not come with one .
thanks 4 all the help
B

 

[jbjennings]

Re: 69 evinrude 18 hp no forward motion.

I'll give this a try:

1. your drive shaft shouldn't stay in the powerhead. The drive shaft splines must be rusted in the crankshaft socket because someone didn't grease them or replace the o-ring the last time the impeller was changed. The drive shaft impeller key should have snagged the water pump housing and kept it in unless you banged it pretty hard but shouldn't be a big deal. You need to get the drive shaft out of the powerhead obviously so you can get it back in the lower unit. You may have a problem getting the drive shaft back in the pinion gear without opening the lower unit. I wish I had some good suggestions for getting the shaft out but you'll have to wait for someone that really knows something to answer that one for you. It shouldn't be hard since you have the l.u. off now. Definitely use the new housing.
As for the impeller: Just because it has all the blades on it doesn't mean it's good. Has it taken a set? I mean are all the blades nice and flexible and sticking straight out when you're holding the impeller in your hand? Or are they hardened and stay bent when the impeller is out of the housing?
A bad impeller has missing blades and cracks in the rubber, but most often the blades just stay curved like they were in the housing even after you take the impeller out (taken a "set").
Here's a link to a parts diagram if that's helpful. Good luck, JBJ diagram:http://shop2.evinrude.com/ext/index.aspx?s1=7e1a40cec63224eabdc0f828a8022f9b

 

[samo_ott]

Re: 69 evinrude 18 hp no forward motion.

What do you mean the shift rod came out? Did it come out of the LU or do you mean is just separated at the joint where it's supposed to?

As Jason says you need to get the shaft out. If you are 100% sure there's no water in the engine I would put it upside down and run some pb blaster down the shaft and let it sit there on the joint for a few days...

And if you can post a good pic of the impeller and the housing we should have an idea for you of its condition. Although I have seen housings and impellers that looked fine but worked a lot better when replaced. If all is well there, then you have a blockage or restriction somewhere else.

 

[B STROH]

Re: 69 evinrude 18 hp no forward motion.

THNAKS for the replys .
the shift rod seperated were its suppose to and dropped down with the lower unit.

the driveshaft on the other hand stayed up in the power head.
as for the waterpump the impellar does look like its "taken a set" and the inside of the housing looks as it may have some very fine scratches along the inside were the impellar runs.
It was suggested to me to blow compressed air through the water pump tube to make sure theres no blockages, gonna try that.

I figured it would be easier to put back together with the drive shaft down in the lower unit, but is it a must to or can i put back together this way.
so any suggestions as to how to get the drive shaft down and out. the driveshaft still rotates if i turn the flywheel.

I appreciate all the help so keep the suggestions rolling

Boating broh
Bstroh

PS ie tried resizing my pictures it always says there to big any

 

[samo_ott]

Re: 69 evinrude 18 hp no forward motion.

I've never tried it but guess that it would be EXTREMELY hard to re-assemble with the drive shaft stuck to the crank. I would try very hard to get it out.. Try my method.. Turn it upside down and lube it... and let it sit for a day or 2. If you dont you will have the same problem everytime in the future.

Use www.irfanview.com to resize etc. It is an excellent free program i have been using for years.

BTW, I have around 8 or 9 18 hp's ranging from '57-'66 but none as new as yours, but they're all pretty much the same...

 

[mikesea]

Re: 69 evinrude 18 hp no forward motion.

its going to be impossible to get the driveshaft to align with the pinion gear thats down inside ,the pinion is basically floating around down there,if you get the driveshaft out,you will need to slide it into the lower and kinda shake and roll the lower around in hopes you get it in place,that you will not be able to do,or at least its doubtful it will be sucessful if the shaft is in he power head,what I have done successfully is,I slide a heavy weight lifting weight onto the shaft,then I lock a couple vise gripping pliers on the shaft in a place that wont affect it with scratches.and use weight as a slide hammer,other ways are.same set up with more weight and using an air operated chisle to vibrate on the shaft the rusty connection may give way,the last option ,remove the powerhead,and use heat

 

[jbjennings]

Re: 69 evinrude 18 hp no forward motion.

I thought Mikesea's idea was great and bet it will work. I was also thinking if you still can't get it that way, you might try taking off the powerhead and getting at it better where it's connected. I don't know if I would use heat there without asking someone knowledgeable first. I would do whatever extra work I had to in order to get the drive shaft out. You might even take the powerhead to a machine shop. They have cool ways of solving problems like that without tearing stuff up.
JBJ

 

[B STROH]

Re: 69 evinrude 18 hp no forward motion.

So your saying it should take just brute force to get the drive shaft down and out, because of rust or the o ring???.
Man this ****s just like plumbing "CAN O WORMS" LOL

thaks guys< im totally bummed it didnt come a part right.I actually thought this might go hitch free DOH.

all suggestions welcome.

B stroh

 

[B STROH]

Re: 69 evinrude 18 hp no forward motion.

So with a couple taps and some downward pressure the drive shaft came free and ia mready to move on.
SO assume i grease the end of the dive shaft that is going to enter into the pinion gear ?.

then i will proceed with replacing the waterpump and putting the prop back on.
I did blow compressed air through the water pump tube and i felt the air come back out the exhaust hole so thats good.
The manual says to use a lght oil on the impeller when installing
call me dumb but whats light oil ???

Im ready to put the drive shaft back in the lower unit but need to know if it needs grease (1000?).
thanks all
bstroh

 

[jbjennings]

Re: 69 evinrude 18 hp no forward motion.

B Stroh,
Glad to hear you got your driveshaft out. I'd get the proper o-ring and grease the splines before reinstallation as I'm sure you had in mind already.
Light oil for the impeller is like wd-40 or something similar. Heavy oil is like gear lube and has a higher viscosity (thicker). The light oil is just to give the impeller blades a little lube on startup until water gets to the pump and lubes it. That's the problem when folks run them out of water, the rubber on the metal pump body heats up fast and melts due to lack of lubrication by water. After you put an impeller in and see how tight it fits, you know how important the water is when you run it.
Expect to have a little trouble getting it back in the pinion gear. You'll know if it's in right if the driveshaft turns the prop properly with no grinding and the impeller key fits in the right place.
I believe you use 85-90weight marine gear lube for your gearcase.
I would put a little 90 weight on the splines where it goes into the pinion.
Hope this helps,
JBJ

 

[B STROH]

Re: 69 evinrude 18 hp no forward motion.

Thanks jb for all your help . It is much appreciated.
The lower part of the drive shaft did not have O ring on it and the splines seemed pretty dry. I know that a o ring goes on the top part of the driveshaft that enters into the powerhead but the bottom does also???
Just out of experiment B4 your answer, Slid the drive shaft back into the lower unit and i tturned the prop with a litlle roughtness but there is no lube so does this sound correct.

I have to run but will check back in a couple hours

Thanks again

BSTROH

 

[jbjennings]

Re: 69 evinrude 18 hp no forward motion.

No o-ring on the bottom of the shaft. I don't think there should be any roughness even with no lube. You may have to crack the lower unit and check to be sure everything is kosher. Hopefully someone else will check in with some further knowledge.
good luck,
JBJ

 

[B STROH]

Re: 69 evinrude 18 hp no forward motion.

Im gonna replace the water pump housing and base plate. The manual says to use a sealer on the lower unit housing just underneath the base plate ..
.....What sealer are they talking about????
the waterpump came with a packet of moly lube to use on the upper driveshaft splines but no sealant.

is this gonna be another wrench in my trying to get this done.... DOH.

Bstroh

 

[B STROH]

Re: 69 evinrude 18 hp no forward motion.

bump bump >>>>

anyone know as to waht sealer the manual is talking about as states in the above post.

thanks B