Question about Mantis 2-Cycle Tiller

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Older Mantis 2 cycle must be choked to run

It starts with the choke pulled out but when the choke is pushed in (slowly and a little at a time) the engine begins to rev up but then dies. Is this also a fuel flow problem? It was "repaired" last week and the carbeurator (sp?) was "cleaned". It is quite old and maybe we should do what my bother-in-law suggested - take it out and shoot it!

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Look on the side of the carb for 2 small adjusting screws they will be almost touching( they will have springs on the threaded part of the scews) the heads will be small 3/16 " open these counterclockwise, this allows more fuel in. The one closest to the engine is for the idle mixture the other is for high speed , tilling speed. 1/2 to 1 turn may help, good luck . try PER small engine tecnical forum online

Posted on May 21, 2009

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The rings are shot, replace the piston rings, hone the cylender and it sould take care of the revving issue.

Posted on May 20, 2009

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Brand new mantis motor/started when i got it let set for a couple months wont run it will start on choke


The first thing I would do would be to dump out all of the old gasoline mix from the tank and replace it with fresh gasoline mixed with the proper amount of 2-cycle oil.

Jul 21, 2014 | Mantis 2-Cycle Tiller

1 Answer

Mantis will only run when the choke is on. If I try to push the choke in it dies.


Having owned a Mantis for many years it sounds like your air/fuel mixture may be to lean when you push the choke in. First check the simple stuff. Make sure you are using fresh fuel with the proper 2-cycle oil mixture. Check or replace the fuel and air filters. Replace the spark plug annually. These are the routine maintenance procedures found in your owner's manual. If none of this solves your problem either the carb fuel mix adjustment screws are not set properly or a carb rebuild kit is needed. The proper setting for the mixture screws should be detailed in your manual. Removing the carb and replacing the needle valves, gasket and other items takes a little more expertise. Before jumping in to this and assuming all other maintenance has been performed press the fuel primer bulb several times before trying to start it. You should feel resistance after 3-4 pushes. If you don't feel any resistnace the carb is not being primed and the bulb needs replacement (you may notice a small fuel leak if this is the case). If you can get it primed, pull the choke out, start and let it run a minute or so. Then make small, gradual changes by turning the fuel mix screws (not the idle adjustment) as noted in your manual. Try to push the choke in half way or as far as you can without killing the engine. If may run a little rough but continue tweaking the screws until it smooths out a little. Gradually continue pushing the choke in and turning the adjustment screws as needed to keep it from stalling. This is best done with the tines supported off the ground during adjustments. Just make sure to protect yourself and others from coming in to contact with them. When set correctly you should be able to achieve full throttle with the choke fully closed. A little time and patience should get you up and going again. Of course you can always contanct Mantis at www.mantis.com or call them for troubleshooting assistance. Hope this helps.

May 25, 2011 | Mantis 2-Cycle Tiller

1 Answer

Can not find my manual for the mantis tiller..forgot hot to start it up for the first time


You should be able to go to the Mantis web site and download the owners manual. To start, make sure the switch in turned on, push the fuel primer bulb several times (until you feel resistance), pull the choke out all the way and pull the starter rope until it fires. Then, push the choke half way in and it should start. Let it run a 30 seconds to 1 minute and then push the choke all the way in. Be sure you are using the currect fuel/oil mixture with fresh gas and oil. If you have not done so already clean the air filter and replace the spark plug at the recommended interval.

May 23, 2011 | Mantis 2-Cycle Tiller

1 Answer

I have had my mantis for five years. It has always been hard to start. From the very beginning I had to move the choke in and out after it started to keep it from dying after it started. Each year it has...


I feel it might be time to overhaul the carburetter. Clean out all the passages and jets, especially the little screen that is pressed into a hole under the one diaphragm. Clean out the recess for the needle and seat and replace all the gaskets, the valve plate and the primer bulb. Also check the fuel tubes and the filter at the end of the intake tube (if it has one). If there is too much wear on either the choke shaft or the throttle shaft, it may just pay you to replace the carb completely.

Mar 17, 2011 | Mantis Garden

1 Answer

Starting instructions on off switch only labeled O and -


O and I are the international symbols for off and on. The O is the off position and the I is the on position. Put the switch in the I position. Make sure there is properly mixed fuel in the tank. Your Mantis probably uses fuel mixed 1 part 2cycle oil to 50 parts gasoline. Push the primer bulb a few times until you see fuel in the bulb. Position the choke lever to full choke, open the throttle completely and use short, quick pulls on the rope until the engine sputters. Reposition to choke to half and pull the rope again. The engine should start at this time. Let the engine run for a few seconds, then push the choke lever to off. Go to work in the garden.
Good luck!

Aug 24, 2010 | Mantis 2-Cycle Tiller

1 Answer

How can i get my mantis to start? i am vision impared and have trouble seeing the settings. what should the i/o switch be set at? the choke? how many times on the primer bulb be presses? thanks


Hi again,
the I / o switch is for i = ignition or ON - the O = off

not seeing the choke you will need to push the control one way or the other - using memory push the choke control full one way and try to start the unit - it if fires off pull it back about 1 quarter of the way back away from full on choke.
As for pushing the bulb - if the unit has not been started for a month or more - push the bulb 10 times. - if you're restarting the unit after a short pause in use then 3 times.
Best of luck with this.
Also you might just want to drop by a Lowes hardware and they will help you if you need further help.

Thanks for choosing Fix Ya


Jun 06, 2010 | Mantis 2-Cycle Tiller

1 Answer

I forgot how to start my mantis.


close the choke , pump primer bumb 3 or 4 times pull rope with the switch turned off then turn it on and pull rope again.

Apr 25, 2010 | Mantis 2-Cycle Tiller

1 Answer

Mantis won't keep running


if unit has bean stored with fuel in it during off season you will need to replace the carburator the symptoms described suggest bad fuel you may get lucky by dumping the fuel tank purging carb. then add fresh fuel otherwise replace carb. e-10 fuel generally last a max 3weeks without stabilizer

Apr 11, 2010 | Mantis 2-Cycle Tiller

1 Answer

How do you start a 2 stroke Mantis? I lost the book. Will


first, push the primer bulb a few times to get fuel circulated and air out of the carb. Turn on the switch, put the choke on full. Pull the rope until you hear it fire. Then put it on half choke. Pull the rope; it should fire within a few pulls, and should run. Take the choke the rest of the way off once it's running well. This is a standard starting procedure that works well for every kind of 2-stroke engine used in the garden.

Mar 28, 2010 | Mantis 2-Cycle Tiller

1 Answer

Mantis tiller sv-4 echo engine no spark from coil mantis 2cycle tiller i got it running tryed to start it 4hrs latter same old problem wont start, plug wet with gas wont start. coil was checked by shop...


Sounds like it's flooding either from over choking or the inlet needle in the carb is leaking. Have you removed the plug and blown out the cylinder and plug with air and then tried to restart? Be careful not to keep cranking with the choke pulled out. When it 'hits' ONE time, move the choke halfway in and crank again

May 31, 2009 | Mantis 2-Cycle Tiller

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