I got a 6yr old mower that has been acting up last year so i took the carb apart cleaned it out and put it back together and installed it primed and started and shut off 1 sec later and won't restart nomatter how many times i primed it no help around in my area because parts are hard to come by since murry inc discontinued my model OVRM120-22043E and a new engine is out of the question. home depot no longer carrys any thing for it

 

Sometimes I have the same problem with mine (OLD lawnboy). What happens is that the plug wire comes off of the coil, with no spark the lawnmower doesn't run. This might be a good place to start looking.

 

checked has spark

 

Was the gas sitting in it all winter? Is it possible that your gas went stale?

 

maybe i'll get some new gas tomarrow and try that

 

When you cleaned out the carb I assume you put it back together correctly, yes?

Other thing to look for is whether any of the jets or passages are clogged. A motor that sits for awhile tend to get some sort of residue that can get sucked up into the jets, especially if there is a float bowl on the car, the residue collects in the bowl and gets suked right into the jet in the bowl. THis will cause it to run a few seconds and die. Clean it out with some small wires or a small drill bit and clean out the bowl.

This also goes for other jets even if you don't have a float bowl. Most carbs I have seen have 3 to maybe 5 jets hidden all over the carb. But usually it is the one where the gas hits first that clogs.

Good Luck,

Jim Henderson

 

i didn't it compleatly take it apart i just took it off the mower to spray carb cleaner through it im not that skilled if it needed to taken compleatly apart i would call my uncle to help me. the problem was a bad intake gaskit and the governer linkage was put in the wrong hole (stupid tecumseh repaire man)

 

35l911


Am I reading this right???

You have a Murray with a Tecumseh engine on it? Are you sure it isn't a Briggs & Stratton?
(EDIT: Duh, I just re-read Tecumseh model # listed in your original post! Sorry!)



In any event, there is the chance that the inlet valve is stuck in the closed position, IF you didn't use a gas stabilizer, like Sta-Bil.

GENTLY tap on the side of the carb BODY with a LIGHTWEIGHT hammer handle.
Key word is GENTLY.
This MIGHT free up the inlet valve and allow gas to enter the carb bowl.

Next. . .
IF this is a Tecumseh engine, close the "Main" needle valve on the bottom of the carb, but do NOT force the valve beyond where it JUST stops.
Then, open the needle valve 1 to 1-1/2 turns.

Next. . .
Remove the spark plug.
Squirt LIGHTER FLUID into the cylinder.
Give it a GOOD squirt.
Replace the spark plug and wire
Set choke on carb and start the engine.

IF it starts and immediately stops, the carb is gummed up and needs to be rebuilt.

IF it continues to run, let it run until it runs out of gas (at medium to high speed). The thought is. . . cut the grass!
Chances are that you have some BAD gas in the carb and it needs to be run out and re-filled with GOOD gas.

IF none of this works, PM me. Since you are in Oxon Hill, MD, I can give you the name and address and phone number of a really good repair shop that is not too far from you.

IHTH.

EDIT:
I just noticed that you said that parts are not available!?!?!!?
Parts ARE available IF you know where to look.
I can still get parts for a B&G engine, model 5BH that was made in the 1960s!

Check here for parts and also here's a link for the parts listing for your engine.

http://landscapepower.com/tecumseh-p...h_PDF_102.html


http://www.landscapepower.com/pdf/Te...120-22043E.pdf

 

You said it has spark. Is the plug getting wet when you try to start? Yes carb is flowing. No clean the carb. If yes with no start suspect bad gas. Empty gas and refill from a FRESH supply. If no start with good gas then try spark plug, some won't fire very well under pressure.

Good luck




Also don't fall into the trap that we used to see all the time. Owner would bring in tractor that wouldn't run and tell us he drained all the old gas and refilled it. The problem was almost always that he refilled it with the can that had the same old gas that the mower already had in it.

Secret: The higher the octane gas the longer it seems to last in storage. Stabil is nice but this is worth the time/cost of getting it started next time too.

I got a free snow blower this year for this exact problem. . It wouldn't start until the rope broke, so the guy said it must be too old he wanted to throw it away. Offered to try and fix it he said it's junk. I helped him throw it in my truck and 45 minutes later with the same rope it had and 3 bucks worth of gas she runs like a top. Used it three times this year amd even made 50 bucks.

 

I the same problem with my roto-tiller. Hadnt used it in about 3 yrs. Turned out to be the exhaust valve stuck open. Pull the spark plug and see if the valves are opening and closing. I stuck a socket extesion in the spark plug hole and tapped the valve closed . It started right up and ran fine.

 

main jet clogged or jammed. see it all the time

 

The Briggs intake valves tend to get loose and then they will run but not make any power. I have never seen too much trouble with valves on Tecumseh. Anything that has sat for more than a year could have all kinds of surprises. Keep a fire extinguisher handy if you try to start on that has been sitting because animals make nests in crazy places. It would suck to burn up a garage for a lawnmower.

 

35l911,

Any progress on getting this engine started???

 

With that model there are two orings that hold the main jet in place,and the main jet is plastic,the orings rot and clogg the jet and passages you would be better off getting a rebuild kit and do it right or take your carb to a shop and have them do it.This new gas is causing all kinds of problems with any rubber parts in small engine carbs.

 

One time I couldn't get a lawnmower to start... it turned out that the key between the flywheel and crankshaft had broken, so the spark timing was way off. Something to check if everything else is OK...