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How do I get my Tecumesh Model H35-45430M lawn mower motor running. Have cleaned, soaked it in solvent that would take the hair off a mouse as well as trying with the choke full on which does not wet

Everything but take out the welch plugs and still won't go

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You can over soak it and if you soak it in any strong solvent that does not affect gasoline solvent you have wasted your time. You should never need to remove welch plugs. With more information someone might be able to better advise you. Pull the plug and with an oil can or the like squirt a small amount of fuel into the cylinder and then screw the plug back in and see if it will start and run.

Posted on Nov 24, 2014

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Posted on Mar 30, 2009

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SOURCE: lawn mower ony runs at idle and dies after seconds

try holding the throttle open

Posted on Jun 26, 2009

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SOURCE: my riding lawn mower starts up fine but stops running after 1 min

poss the float sticks and floods out,spray carb clean in it,

Posted on Aug 05, 2009

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SOURCE: my lawn mower starts, but won't stay running.

After you check airflow (i.e. cleaning up the air filter), check fuel flow.

I'm assuming the gas is clean and fresh.

Is the gas flowing from the tank?
Is the gas getting into the carb?

If yes, then the next step is to remove the carb.
Check the diaphram between the carb and the tank, this acts as your fuel pump. Is this diaphram in good condition? If not replace it.

While the carb is removed, clean all the little ports (jets) into the carb with WD-40 or carb spray-on carb/choke cleaner (automotive section of your local auto store). Blow it dry with compressed air (canned or from a air compressor). Replace any gasket so the carb doesn't have seepage when reinstalled.

It may sound a bit daunting, but its an easy job and may stores carry the necessary parts. Try WalMart, or auto stores, if they don't then a good hardware store should. Or, a lawn mower shop should have it.

Good luck, I'm rebuilding doing the same thing to one of my mowers this week. Piece of cake.

Posted on Sep 26, 2009

rycgl
  • 1545 Answers

SOURCE: HI there, I got

There could well be a build up of sediment and debris in the main jet to the carburetor. It is easy to get to and clean. It is the brass bolt that holds the lower float bowl onto the main body of the carburetor. To clean it, drain your gas. Remove the bolt and external washer UNDER the carburetor bowl. Clean out the bowl of any sediment and/or water. To clean the brass bolt, use no metal objects. Carb/Choke aerosol spray cleaner will do the job. Pay close attention to the hole in the bottom of the bolt and the very small holes about 2/3 of the way up the bolt. Clean till shiny with holes cleared and reinstall. Your fuel flow problem and shut off condition may be solved.

Posted on Jun 05, 2011

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When I give the engine No, all things come back negative but engine is a Tecumesh H35-45430M Ser., 7320B


If you go to a small equipment dealer & give them
the info, you will have your answer & be at the bagel
shop, in a matter of 10 minutes

Your approach is wrong

Go where the info is

There will be a replacement or used carb
if you go to a lawn mower shop, etc

Why not just clean yours & look for a repair kit?

Try Norfolk Power Equipment site

I was on that & others last week, for a 21 year old
RedMax Blower I have

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After been in storage for two years I've tried using my Poulan, I clean the floater area making sure not old fuel is there, but still is not running unless I put gas directly into the carb and it does it...


The carbs on small engines have numerous jets which clog very easily. If you are able, remove the carb and soak it in a carburetor cleaning solvent......make sure to remove the gaskets or purchase a gasket kit before you soak. Remove the carb from the cleaner and let it dry. Reinstall.
You may want to check the fuel lines and primer bulb while you are at it. Good luck and I hope this helps.

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Sometimes this problem is governor related..but most times there is a problem with the carburetor. The idle circuit in the carb may be partially clogged or the linkage on the carb is worn and weak. A carburetor/spray choke cleaner could help if you spray it directly into the engine while it is running and even right before starting it up. Best way to clean the ENTIRE carb though is to remove it from the mower...take the lower float bowl off and soak it in some type of solvent/cleaner with the rubber tipped gas inlet needle removed and the float also if it is plastic. For a thorough cleaning, these parts need to be removed anyway....No rubber or plastic carb parts should be soaked with the carbs main body Pahy close attention to the brass bolt that holds the bowl on as it is the main jet and has very small holes in its middle and bottom that must be clear.

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Briggs and stratton engine surges and slows, repeatedly


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