1952 10 hp outboard

[sky9582029]

I have not had any info on the timing to throttle on this engine

 

[samo_ott]

Re: 1952 10 hp outboard

It should be the same as later models. The carb butterfly should just start to open when the cam roller pass the tick mark on the ignition plate. Adjust if not.

 

[sky9582029]

Re: 1952 10 hp outboard

there is no roller on this 1952 motor the throttle is just a slide bar

 

[samo_ott]

Re: 1952 10 hp outboard

Dang, the twist grips started in '53. Not sure then. I forget what year my early QD is, it's a '52 or '53...

 

[jbjennings]

Re: 1952 10 hp outboard

I have a '52 10hp powerhead on my '53 10hp motor and I can tell you the timing is different from the '53. However, if you set the points when the o in "top" on the cam on the crankshaft your timing is set perfect. There's no adjustment. As far as the synchronization with the carb, although I haven't messed with the '52 carb, I would think that the way the carb and throttle lever is designed it would be unlikely that the synchronization of the throttle plate to the armature would be off. Then again..... What's it doing?
JBJ

 

[sky9582029]

Re: 1952 10 hp outboard

mine is a 1952 1 set the points and put a new coil cleaned the carb and set the float but when i stat it up it will not rev up it goes a little better than an idle i also pulled the ex haust cover of and cleaned all the carbon of but lost a bit of one gasket have not found one yet thinking of making one up from gasket material also wayne said i may find the ser. no. on a round plug on the engine block but dont see any thing like that

 

[jbjennings]

Re: 1952 10 hp outboard

If you turn the throttle lever, the armature plate has to move to full advance. You should at least be able to move the throttle on the carb by hand with the cowl off and the throttle at full adance. But I'll bet your problem is not the carb. but instead a problem with spark. WHat have you done to verify that you have good spark? Are you sure it's hitting on both cylinders? It sounds to me like it's not. Did you take off the armature plate at any time? Is the little throttle peg riding on the cam? It should have a little pin that gets pushed forward by the armature plate throttle cam when you move the throttle lever. Make sure it's getting pushed open when you move the throttle lever.
Hope this helps,
JBJ

 

[sky9582029]

Re: 1952 10 hp outboard

Ill check it out again when i pull the fuel line of and run the carb out of gas it revs up before shutting and sounds like 2 cylinders

 

[sky9582029]

Re: 1952 10 hp outboard

JBJ i checked the spark again today and theres lots of spark the throttle when moed over the tab slides ahead on the arm plate and i see the butterfly in the carb opens up but does not rev up i didnt have the armeture plate of

 

[jbjennings]

Re: 1952 10 hp outboard

Get yourself a spray bottle with some premix in it and spray the premix in the carb throat while the throttle lever is wide open. If it picks up, then it's probably a stopped up carb or your tank is not pressuring up. If it doesn't pick up, you don't have spark to one cylinder. How much of a gap will your spark jump? I'm just curious. Just because it sparks when the plug is grounded to the block, doesn't mean it's enough and will spark under compression. It needs to be able to jump a 1/4 inch to 7/16 inch gap with a hot blue spark. If not, you don't have good enough spark. It very well could be a stopped up carb. That's all the throttle can do is open up the butterfly and advance the spark. the carb orifices have to do the rest.
Since that motor doesn't have a choke, you might also run it wide open and put something over the carb throat and partially block it. Once again, if it picks up you likely have carb troubles.
Good luck,
JBJ

 

[sky9582029]

Re: 1952 10 hp outboard

JBJ looks like good spark to me but im not a pro when i put the throttle wide open it almost seems like the cylinders are over fueledand not burning it of because the plugs are always wet. my tank builds up enough air i checked that ;whats the hand pump on the high speed nob do just pump gas into the orfices?

 

[wbeaton]

Re: 1952 10 hp outboard

The plunger action on the high speed jet is the manual primer. It shoots gas to the mouth of the carb to enrichen the initial mixture for starting.

When you cleaned the carb did you replace the cork washer around the high speed orifice? If its in bad shape, fuel will leak past it and flood the engine.

 

[sky9582029]

Re: 1952 10 hp outboard

thanks wayne ill check that out inever took the washers out just the needle valve and blew it out and looked at the point of the valve i put a whole carb kit in my 58 rude you get all that with kit but i here its hard to find parts for this older motor can i try rubber o rings instead of the cork washer and does it have a nylon washer behind the o rings?

 

[wbeaton]

Re: 1952 10 hp outboard

I always remove the old packing completely. Sometimes it bungs up the needle and makes it seem like its seated when in fact its not. You should really have a factory manual to work on that old girl.

I haven't had to replace one of those seals, yet, but I wouldn't use an o-ring. Try to find something fuel proof of a suitable size and thickness. I would expect you'll have to make a gasket.

 

[sky9582029]

Re: 1952 10 hp outboard

do you think i may be having trouble behind the carb with the reeds today when i was running it i checked the spray from the carb and theres a light brown or greyish spay comming out the mouth of the carb i tried almost every thing else to get some rpms?

 

[wbeaton]

Re: 1952 10 hp outboard

You don't have reed problems. You either aren't getting spark, you need to set the carb jets or something is still a miss in the carb.

 

[sky9582029]

Re: 1952 10 hp outboard

Wayne i dont know what else to try ive had the carb of a couple times did all i could had the flywheel of a couple times when i pull each plug wire of seperatlely i can here it cut down to one cylinder and it stalls when i spray gas in the carb it stalls same when itry to choke it a bit why do you think its not a reed problem my manual for the 58 rude says at times these old motors the reed gets fatigued from age or even breaks a piece of and this 52 motor is old every thing ive tried it still does not try to rev up?

 

[jbjennings]

Re: 1952 10 hp outboard

If it was a broken reed, you'd never get it cranked. Just curious, what is the compression on this thing?
What is the gap that each spark plug will jump?
Just trying to cover all the bases,
JBJ

 

[sky9582029]

Re: 1952 10 hp outboard

JBJ my compression is 74 in one and 75 in the other one ,and i have good spark,i set the points at 20 ,how about my coils can i move them a little closer to the magnito than the manual calls for?

 

[jbjennings]

Re: 1952 10 hp outboard

You can't move the coils past the mounting bosses or they'll rub the flywheel.
WHERE's F-R????
F-R would surely be able to figure this one out!
Sorry,
I'm all out of ideas.....
JBJ