'64 9.5hp Evenrude

[Brando.01]

first of all, I have never touched an outboard motor before.
2nd I don't know anything about 2 strokes
I am the new owner of a decent looking 1964 (i think) 9422R Evenrude 9.5 hp motor. I figured out how to start it, and ran it in a tub of water, it did good, so I strap it on the old boat and take it to the lake, i get it started then get out a ways, and it dies, then i start it and it wont stay running. then it locks up and i break the pull cord. I had to paddle back lol,
I replace the cord when i get it home and get it started in a bigger tub of water. this time i let it idle, and rev a few times. it dies and locks up again, then i see steam everywhere. and i realized its over heating. i think.
these things have a water pump in them to keep them cool?

Can someone point me in the direction to go with this thing?
Do I take the lower part off? if so, how?

 

[film495]

Re: '64 9.5hp Evenrude

you probably need to replace the impeller, search around there's some directions how to on here.when you run in a bucket, there's some holes on the back above the cavitation plate, that should sort of spit water as soon as the motor is started, it will sort of spit and spray a little water when the engine is running - don't run the motor if it does not do this.

 

[Rick.]

Re: '64 9.5hp Evenrude

You will destroy your motor if you let it over heat too often. Best thing to do is order an OMC manual for your specific model and year. They come up on ebay frequently. At the top of this forum there is a link called Top Secret File. Look at the various articles in there to gain more knowledge in general. I'm not sure what you mean when you say your engine lock up. I hope you don't mean is is seized because if that is the case you may already have done some serious damage. You can get a compression tester to borrow at some auto parts stores and I would suggest you check your compression now and let us know what you get for readings before spending a bunch of money on parts etc. Don't run it again until you've replaced the water impeller. I had never laid hands on an outboard until a few years ago when a buddy gave me a garage sale 15HP so rest assured you will learn and hopefully enjoy working on them. Best of luck. Rick.
P.S. Here is a link so you can see the parts diagrams of the 9.5 c/w parts descriptions. The only problem is they start at about 1968 but not to worry they didn't change very much over the production years. Always get you dealer to look up the actual part numbers when ordering because some of the numbers for yours will be different.
http://shop2.evinrude.com/ext/index.aspx?s1=c489b1591437ba4a3ad5bc9e3bc8bf8b

 

[Brando.01]

Re: '64 9.5hp Evinrude

Re: '64 9.5hp Evinrude

Thanks for the help so far guys.

I'm not sure what you mean when you say your engine lock up. I hope you don't mean is is seized because if that is the case you may already have done some serious damage.

It died from running, then when i pulled the cord to start it again (i didn't realize it was too hot) the cord came out almost 2 feet and locked, i tried to turn the flywheel, but it didn't budge, then when it cooled down, it seemed to free its self, and i could turn it with the pull start again. I'm sure its not completely destroyed, but it may have hurt it. I will do a compression check as soon as I can.

I didn't see any water squirting out of the motor at all, so i'm sure its not working.

The guy who gave me the motor said it was locked up, so I bet the impeller failed when he had it, and it did the same thing to him.


I just bought an Evinrude 1964 64 9.5 HP service manual on CD for $12.00
so maybe that will help

 

[F_R]

Re: '64 9.5hp Evenrude

When it overheated and locked up the first time, it suffered damage. When it happened the second time, it suffered more damage. And as you suggested,it might have also happened before you got it. By now it almost certainly has burned and leaking head and exhaust gaskets. And unless you are extremely lucky, the piston skirts are scored. It will never run properly again if that is the case. Sorry to be a pessimist, but truth sometimes hurts.

 

[Brando.01]

Re: '64 9.5hp Evenrude

so a simple compression test would tell me if its damaged, right?

i hope lady luck is riding with me o this one lol

 

[F_R]

Re: '64 9.5hp Evenrude

so a simple compression test would tell me if its damaged, right?

i hope lady luck is riding with me o this one lol

Wrong!! A compression test will tell you if the rings and/or cylinder are damaged. It won't tell you anything about the piston skirts. A two-stroke has compression both above and below the pistons. The skirt acts as a valve.

Even if the pistons are not scored, you can bet a bundle that the head gasket and exhaust cover gaskets are burned and leaking. You don't even want to know what a job it is to replace the exhaust gaskets. If you say to heck, you'll run it anyway, water may squirt into the exhaust ports and ruin the rest of the powerhead.

And then there is the little matter of a pleated boot around the shift rod in the exhaust housing. Without cooling, that thing is going to be fried and it is no longer available. Without it, the motor won't run with the hood on.

Play with it if you want, but don't expect much.

 

[steelespike]

Re: '64 9.5hp Evenrude

Do a compression check.100 psi is considered ideal minimum.
However these little motors will run satisfactorily at 60psi.
Don't panic with wildly varying numbers not unusual for a head gasket to fail.
Wow!; theres all kinds of goodies that can fail But cross those failing bridges as you come to them.Unfortunately those low profile motors are a pain to work on.

 

[Brando.01]

Re: '64 9.5hp Evenrude

well, I found out it was the impeller, all of the fins were broke off

a ruined motor all because of a couple ppl who didnt know what they were doing, and a $14 dollar part, seems a shame...

is it a lost cause?

 

[rolmops]

Re: '64 9.5hp Evenrude

well, I found out it was the impeller, all of the fins were broke off

a ruined motor all because of a couple ppl who didnt know what they were doing, and a $14 dollar part, seems a shame...

is it a lost cause?

STOP! Hold your guns.
These old engines do not easily fail and a bit of overheating does not really phase them unless you make a habit out of overheating them.
A head gasket replacement is the removal of a few bolts and a $20 gasket.At most one hour of work.The impeller needs to be replaced.With the help of a manual and a $15 investment in the impeller you can fix that problem in half an hour.
There is a very good reason why these 9.5 outboards go for 4 to 6 hundred dollars on ebay.They are great little engines and they can take a lot of punishment.
A little bit of wrenching will probably put your outboard right back in style and do not let anybody talk you into getting rid of it.They are probably dying to get their hands on it.You can get a SELOC manual for $20 some bucks on Ebay and for these little very simple engines that is good enough.
Oh by the way,there are about a zillion spare parts for these engines, not in the stores but on ebay and at a select few old outboard stores.

 

[Brando.01]

Re: '64 9.5hp Evenrude

Thanks for the encouragement rolmops
ill get an impeller and head gasket ordered!

the manual is already on it's way

 

[Brando.01]

Re: '64 9.5hp Evenrude

well i got the new impeller in, It took me a few different tries to get it right. The shift linkage was really making it hard! I think i finally got it to shift correctly though. I don't think i was getting the linkage in the keeper far enough so neutral wasn't set where the throttle could be limited.

It appeared to have some drips of water coming from the exhaust manifold (if that's whats its called) I tightened up the bolts on that and it seemed to stop. Other than that, it cools now and seems to run great and idle and accelerate just fine.

I think i will take it to the lake and try it again.

anyone have any pointers or anything that i might need to know? remember, I've never messed with one of these before. lol

 

[iwombat]

Re: '64 9.5hp Evenrude

As said before, your head and exhaust gaskets are probably toast also. Run it for a bit, then check the spark plugs. If they look like they've been steam-cleaned you need to do the gaskets too.

 

[ezeke]

Re: '64 9.5hp Evenrude

Carry a couple of extra drive pins and a spare stainless cotter pin or two on your boat.

Keep a piece of starter rope on the boat to use on the flywheel if the recoil starter jams or breaks.

Check the plugs often and keep them clean; an extra set on board is never a bad idea.

The 9.5's like to run at the correct temperature, so when you can, check the thermostat.

You want the A/V plate (the horizontal plate above the propeller) to be parallel to the water when running and as close to even with the bottom of the boat as possible.