Question about Toro Lawn Mower With Toro Power Tools

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Mower will not start

Toro 6.75hp personal pace mower. will not start did not use last year did not put stabilizer in fuel

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Hi and welcome to FixYa. I am Kelly. Sounds like your in need of a serious carb cleaning session:

You engine parts manual is here: http://www.briggsandstratton.com/maint_repair/manual_and_more/docmanualdetails.aspx?showpdf=ms2143_B_LO.pdf

Now lets go through carb cleaning:

Before you start.... if you have a digital camera take "close up" PICTURES of the linkages and springs attaching to the carb. If this is your first time you will be so glad you did. You can always delete them later if you don't need them. :)

Here is what you need to do:

1. Fuel selector off
2. Remove float bowl mounting screws and nut
3. Localte the Air fuel Jet on the side of the carb and count the number of turns it takes to close the Jet adjustment until it is just snug.
4. Remove the Jet / Orifice in side of Carb (spring on screw stem)
5. Using a catch fuel container turn on the fuel selector. Fuel should flow at a good rate. GENTLY lift the float assy level and make sure fuel flow shuts off. When you drop the float again fuel should flow.
If you do not have fuel flow at this point the needle and seat will need to be inspected. Fuel selector OFF.
(The following procedure is to be done only if there is no fuel flow with fuel selector on.)
a. Remove the float pivot pin.
b. Drop the Float down (The needle will come off with the float. NOTE the position)
c. Inspect the tapered rubber of the needle valve It should be pointed. If it is not pointed then the rubber tip is stuck inside the seat.
d. Clean the seat hole ONLY if obstructed. (Easily damaged)
e. FUEL Selector on then off fuel should rapidly flow through the needle seat.
f. Renistall Float and needle making sure to get the pivot / hinge pin installed correctly
g. Fuel selector ON. Raise and lower float checking for free movement with fuel flow when lowered and stopped when the float is raised level.

6. If there still is no fuel flow at this point remove the fuel hose from the carb and check fuel flow. If no flow check that gas tank exit hole, fuel filter (if installed) and the selector valve assy for obstructions.

Reassemble connections.

FUEL FLOW IS GOOD

NOTE: If you have carb cleaner spray it into the side needle jet hole.

7. Install air fuel mixture needle jet in the side of the carb. Turn until closed and then back of the same number of turns it took to initially close it snug before removal.

8. BEFORE you install the float bowl inspect the bowl nut. There are holes in the side of the nut where it screws in to the bottom of the carb that must be clear. (could be no holes in yours)

9. Install Float bowl mounting screws and nut. Check for leaks.

10. Test engine.

That should do it.

NOTE: This engine was made with 2 different carbs. One had a choke the other had a primer bulb. If the primer bulb has a hole in it the engine will start then die after a few seconds.

Thanks for using FixYa.

Kelly

Posted on Apr 23, 2010

  • Kelly
    Kelly Apr 27, 2010

    Just doing a follow up. Were you able to resolve your "NO START problem? If you need more help just ask.



    Kelly



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  • 1 Answer

Mower run for a while then shut off

Posted on Apr 30, 2010

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