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Toro 421 snowblower won't start

Only start with starting fluid then stall. gas is in the bowl but spark plug is dry

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Check to see if in line fuel shut off valve is open.If so,sounds like carb is gummed up.

Posted on Jan 28, 2009

  • Louis Salveggi
    Louis Salveggi Jan 22, 2014

    How do you un-gum up the carborator



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Hi Jerome:
Shouldn't be too bad.
You could disconnect the fuel line at the carb and drain the tank.
Drain and flush the carb. Reconnect the fuel line and fill with fresh gas.
If it won't start, pull the spark plug and clean/dry it with a propane torch, or replace it.
Odds are it will be fine.

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Clean out the float bowl as well clean out the fuel jet in the bolt that holds the bowl on. There usually are very small holes in this jet and if you can't see or blow through them you have to clean this out. Will not run if this is plugged. You can blow this out with an air com presser or a very small wire to push through it. Don't force anything through this hole or you could damage it. If it will start when you put a spoon full of gas in the spark plug hole and replace the plug and stalls in a few seconds it's usually a dirty carb or dirty jet. You can buy a cleanser as well to spray if needed.

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My toro snowblower keeps stalling. It starts up fine, but won't run continuously.

If you haven't already, dump out gas and put fresh in it and try this, if it doesn't work you will have to clean the carb, take it apart and clean all jets ports etc and put back together and you should be Good to Blow Snow, pretty common problem with Small Engines that set half the season.

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well there could be a number of problems the 2 things i would do is clean out the bowl and clean the jets on the carb clean the bowl first and if that does not work clean the jets before u do that make sure to shut the gas off to clean the bowl u have to unscrew the one bolt on the bottom of the bowl then take electric parts cleaner or starter fluid and spray the whole bowl with it then put it back together the way it came off then turn the gas on and try it if it still wont start turn the gas off take the carb off and the little screws on the carb turn them in and count how many times they went in then remember that number. unscrew the screws and spray some starter fluid or parts cleaner in there and screw the screw in all the way then unscrew the screw how many turns u remembered and do the other ones then turn the gas on if it still does not start take out the spark plug get a lighter or a propane torch an get the oil and **** out of the tip of it be careful don't touch it it will be hot let it cool down then put it back in and try again GOOD LUCK!

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Remove the Carb Bowl and on the bottom of the bowl clean the center of crust gas....

It blocks the gas from getting from the bowl to the inside of the carb.

Caused when gas dry's up in the bowl leaving deposits behind plugging up the works.


Apr 26, 2009 | Toro Lawn Mower With Toro Power Tools

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