Question about Mantis 2-Cycle Tiller

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My mantis tiller locked up. The tines won't turn.

My mantis tiller locked up. The motor ran but the tines would not turn. I pulled off the lower gear plate and found a ten small things that look like roller bearings. I also found a small chewed up piece of metal. How hard is it to repair the worm gear and bearings.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 15 Answers

SOURCE: Engine runs fine on 2-cycle Mantis tiller, but

Your problem is a common one on Mantis tillers. The engine sounds like it is not breathing properly. I have fixed dozens of these problems and it is almost always the spark arrestor clogged up. The spark arrestor is found inside a small housing on the muffler (easy to fix). There are 3 screws that need to be removed to get the muffler cover off, then you will see a small housing a little over an inch long with another 3 screws...remove them and you will see a small screen that is probably clogged. Clean it and the housing with a solvent (I usually use carb cleaner) then re-install the arrestor and reassemble the muffler cover. This will fix your problem about 80% of the time.

If that is not the problem you may need to fix the carburetor (take my advice and just buy a new one...not much more expensive than the repair kit and a lot simpler.

Posted on Jun 14, 2009

  • 221 Answers

SOURCE: mtd rear tines tiller won't engage tines. F and R

It sounds like the shift shaft or something in the gearbox the shift shaft engages. I know you didn't want to hear this but it is not uncommon. Most operators don't use the clutch bail when starting, stopping, and shifting as they should.

I hate to say it but this may require a trip to your service center for repair.

Posted on Apr 30, 2010

  • 1 Answer

SOURCE: Tine shaft removal for mantis 2 cycle tiller

Put the tiller in a vise clamping on the bottom of worm gear housing. Remove worm gear housing cover. Clamp the worm gear at the top with a vise grip (I think Kuya Jon is correct in that you could skip this step because the transmission won't move when unscrewing, but I did it anyway just in case). Put a pipe wrench on the left tine shaft and unscrew it like it was a normal bolt. It's in there tight and it will take some force. When I unscrewed mine, the left bearing seal retainer, left bearing seal, and left bearing all came out with it. I just needed to replace the seals. I went to the right side, and with a screw driver carefully pried out the retainer. Then it's easy to just pull out the right seal with your finger. Put a new right seal in and insert the right retainer. Make sure the retainer is facing the correct way. I used a block of wood to tap mine in once I had it positioned because I was afraid to hit the retainer with a hammer. Now I put the tine shaft back in while holding the worm gear with the vise grip. Screw the shaft as far as it will go by hand and then go the rest of the way with a pipe wrench. Now came the tricky part. The right bearing did not slide right in. There was some resistance. I had to use a 1/2" threaded pvc pipe (not sure it needs to be threaded but that's what worked for me) longer than the tine shaft that was sticking out. I slip the pipe over the shaft against the bearing and tapped with a hammer. This drove the bearing in all the way. It needs to go in far enough to leave room for the seal and retainer. The plastic pvc allowed for this. Now put the right seal in. If the outer edge of the seal is only flush with the housing you did not tap the bearing in far enough. I made this mistake on my first try and tried to force the retainer in. Take it from me. It won't work. You will end up ordering another retainer to replace the one you mangled. Once in properly I slid the retainer over the shaft and then put a washer over that to tap against. The block of wood doesn't work on this side because the shaft is in the way. I used my pvc pipe again to tap against the washer and, wala, it worked like a charm. I hope this helps someone. All the other posts really helped me. Thanks!

Posted on May 21, 2010

daneinwv
  • 124 Answers

SOURCE: My Mantis tiller is 9 or 10 years old. I've

Hello,
My name is Dane and I am going to assist you in solving your problem.

You should have an idle screw adjustment on the carb to adjust the idle RPM. As you pull the trigger, watch on the carburetor for a small moving plate. The idle screw should touch that plate. Be very careful, and have someone hold the tiller and start it. Back off the screw just enough until the tines stop turning. I hope I've helped. If you found this reply useful, please leave me some THUMBS UP, if you feel I've deserved them. Thank you! Dane

Posted on Dec 06, 2010

  • 2 Answers

SOURCE: tiller tines won't turn where put in gear.

The spring goes in first followed by the ball. The ball should not get in the key way because that is filled by the slider pins that go up into the spur gear that drives the tines. Actually the slider pins drive all of the gears by engaging different gears as the gear collar is moved up and down. The detent spring and ball is the mechanism that is supposed to hold the the clutch collar in place. Mine jumps out of gear when tilling any depth except very shallow. I have reinforced the shifting forks and replaced the pins on the end of it. I believe that the pins wear and the arms spread because i have to keep pressure on the shifting rod or it will jump out of gear when tilling. Even with the reinforcing, pressure on the shifting rod will wear out the pins on the shifting arm. This will be my 3rd reassembly and I am leaning toward the detent spring being weak and allowing the shifting collar to move too easily. I may order an new spring and ball and see if that helps. I am getting pretty good at taking it apart.

Posted on Apr 16, 2011

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1 Answer

The gears have locked up what is the problelm


Is the motor running and increasing power with movement of the throttle lever? If so then something is possibly caught in the worm gear mechanism.

May 22, 2014 | Mantis 2-Cycle Tiller

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

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Worm gear has a hard spot, and doesn't turn freely. Tines will run for a short period of time and then stop.


You will probably need to replace the worm gear and any other worn parts in the gearbox. Check your owners manual for part numbers. If extensive repair is needed and your machine is several years old you may be better off with the Mantis trade in program for a new tiller. I found this to be the case with my own tiller last year. Call or go to www.mantis.com.

May 24, 2011 | Mantis Little Wonder Tiller/Cultivator...

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My Mantis tiller is 9 or 10 years old. I've recently had the carburetor replaced but this year the tiller won't idle. The tines want to turn and you have to hold in the air to start it and move it to the...


Hello,
My name is Dane and I am going to assist you in solving your problem.

You should have an idle screw adjustment on the carb to adjust the idle RPM. As you pull the trigger, watch on the carburetor for a small moving plate. The idle screw should touch that plate. Be very careful, and have someone hold the tiller and start it. Back off the screw just enough until the tines stop turning. I hope I've helped. If you found this reply useful, please leave me some THUMBS UP, if you feel I've deserved them. Thank you! Dane

Dec 06, 2010 | Mantis 2-Cycle Tiller

1 Answer

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sounds like a piston seizure. are you using correct oil and ratio. carb could be going lean and causing the cylinder to over heat, adjust high speed mixing screw and hope no damage has resulted.

Jun 30, 2010 | Mantis 2-Cycle Tiller

1 Answer

I have a mantis tiller, the tines won't turn, the engine IS seated to the flange. any ideas on a fix?


If the motor rpms up without drag it might be a bad gear in the transfer case or a broken cable if it's a cable drive, could also be a bad or stuck clutch. Hope this helps

Apr 27, 2010 | Mantis Tiller Tines #1622 00 02

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I have a craftsman 19 in dual rotating tines, rear tine tiller. # 917-293493. In mid till, the tines quit turning. Won't shift into any gear. Wheels are locked. Any ideas?????


It is going to be a transmission issue. You can try with the engine off, turning the trans pully by hand in the opposite direction that the motor was turning it.
Some gears in the trans got crossed up and locked.

Aug 12, 2009 | Craftsman Rear Mount Tiller

1 Answer

My Mantis Tiller 4cycle engine starts well but when I press the throttle completedly, the tines turn very slowly. This is a brand new tiller, used only twice. The engine is sitting all the way down on the...


I had same issue with my 2 year old 4cycle. Check if the carb is moving full stroke with throttle movement. I had almost no movement at carb at full throttle, found the trigger in throttle handle was cracked and bent rather than pull cable. I called mantis and they promptly sent a new handle bar ***'y with new cable, throttle ***'y Etc and that solved my problem.

BTW: If you cannot wait, I did figure out that if I pushed the carb to open with the throttle trigger fully pulled it would run at high, but when you let go.....LOL

Rich in Wethersfield, Ct

May 10, 2009 | Mantis 4-Cycle Tiller

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