Question about Mantis Gas Mini Tiller/Cultivator, 2 - Cycle

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Mantis tiller will start and idle, but once you engage it, it stalls. Any ideas?

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Check the exhaust side of the tiller. There are 3 screws on the muffler cover that need to be removed, then there is a cover on the spark arrestor that also has 3 screws to remove. Inside this is a small screen (the spark arrestor). Take it out and clean it with a good solvent (I use carb cleaner). This is the easiest and least expensive fix.

If this doesn't work you may need to rebuild the carb. I have found it is easier and costs about the same thing to just replace the complete carb.

The company will tell you to make sure you always run the carb dry before storage, but I have NEVER done that as I believe it dries out the gaskets. I just use STA-BIL gasoline stabilizer before I store it for the Winter and keep it setting level in storage.

Posted on Jun 03, 2009

  • John Herr Apr 15, 2012

    This worked for me. Exhaust side was completely blocked with goop. Cleaned it up and it works perfectly now! Thanks!

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1 Answer

When I Start Mantis Tilleer it starts in gear ( tines are turning)


The Mantis has a speed controlled automatic clutch.

Lower the idle speed by turning the idle screw counter clockwise. The idle screw is attached where the throttle cable meet the carb. The screw has a pointed end that resembles a pencil point.

The engine speed should be adjusted just above stalling.

If the tines turn even when the engine pull rope is pulled, the the clutch is defective and needs repairing.
j

Aug 03, 2013 | Mantis Tiller

1 Answer

Just bought an older Mantis 2 cycle tiller. The tines engage when the tiller is started. Of course that makes it hard to start with the tines on the ground! I don't believe it was doing this when I...


if the idle is too high the tines wont stop due to the tiller tines are run by a "centrifuigual clutch" which means when you increase the throttle speed the tines will start to turn : there are 2 adjustments you can try,1) adjust the idle screw under the carburetor where the throttle adjustment and a triangle piece of metal touch(your throttle cable wire will be attached to this triangle) ,if the triangle and idle adjustment don't touch and there's a gap between these 2 pieces close the gap by adjusting the 10mm adjusting nut,this will correctly set the idle #2) adjust the idle adjustment screw talked about above till the tines dont turn with throttle set at idle or lowest speed setting

Mar 26, 2011 | Mantis 2-Cycle Tiller

1 Answer

Engin runs fine at idle but stalls out at high idle and wont rev up.


Hi 5flash... Get an assistant and a can of starter fluid. Remove the air cleaner and spray some starter fluid into the air intake. Start it up and spray the starter fluid as you move it to high idle, repeat until it works properly. Joe

Thanks for choosing Fixya!

Feb 22, 2011 | Mantis 2-Cycle Tiller

1 Answer

Need spark plug gap. and carb setting


gap should be about .020 - Carb setting is adjusted while running - lo idle and hi - lo idle adjusted to the lowest RPM before it stalls or starts running rough, the hi is adjusted at full throttle for the smoothest / highest rpm

Jun 06, 2009 | Mantis 2-Cycle Tiller

1 Answer

Mantis tiller runs but bogs at full power then stalls


The problem is in your carburetor. Glaze can build up over the winter and cause this very problem. You can try a fuel additive which will clean the carburetor available at any auto parts store since it does run. However, if the problem continues the carburetor may have to be soaked in a cleaner for two hours and rebuilt

May 04, 2009 | Mantis 2-Cycle Tiller

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