Question about Mantis 2-Cycle Tiller

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Mantis starts fine then when it warms up it stalls when you pull the throttle. Is it the carb clogged up, or do you have any sugestions?? I have replaced the gas and oil??

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Hello. the carb is partially clogged. do this. get a bottle of carb cleaner to add to the fuel. follow the instructions on the bottle regarding the amount.

also get an aerosol can of starting fluid and a helper. start it up and have the helper spray starter fluid into the air intake as you pull the throttle. continue until the clog is cleared. joe

Posted on May 22, 2011

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1 Answer

Starts stalls


contaminated or water in the fuel is most likely the culprit here.
drain the tank and carb (small screw at bottom of carb float bowl)
Add fresh fuel from a CLEAN fuel source. Best to completely drain your fuel can and fill it up with fresh fuel. That way if the fuel can is the culprit you eliminated doing this twice.
What happened was fuel sits on top of water, this is why the bike would still idle. The idle circuit in the carb pulls fuel from a higher point than the main jet. This is also why when you hit the throttle it would just die, it was sucking most like something other than fuel.

Apr 02, 2014 | kawasaki KX 450 F Motorcycles

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

My gc430 compact size rototiller will start but when I pull the throttle the engine bogs down and stalls. The tines do not turn at all. It worked fine one week ago.


Try running at half choke until the engine warms up. If this doesn't solve your problem, the carb need adjusted. Adjustments are at the side of carb. there is idle and high adjusters. Also some may have a separate air/fuel mixture.

Apr 09, 2011 | Ryobi Garden

1 Answer

Rode for 120 kilometers pulled over and filled gas tank soon after smiled gas. Seemed to run fine. Next day rode for about 50 km but sounded really rough at high speeds around 120km. Pulled over to park in...


I would suspect that the float is sticking. Checking will require removal of (in order): seat, tank, air filter box/backing plate, and finally, the float bowl at the bottom of the carb. Insure that the float is not flooded, and that the float needle is free of trash.

Aug 30, 2010 | 1996 kawasaki VN 800 Vulcan Classic

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

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

1 Answer

Squeeze throttle engine doesn't increase/tines don't turn


Most likely the throttle shaft on your carb is stuck from residual fuel. Follow your throttle cable down to your carburetor and see if the shaft is moving when you press the trigger on the handle. If not, try moving it by hand and see if it loosens up. If not you may have to take off the air filter cover and spray some carb cleaner in the throat of the carb while moving the shaft back and forth until it loosens up. That should work for you.

May 05, 2009 | Mantis 2-Cycle Tiller

4 Answers

Won't stay running...


I had the same problem with my mantis. It would start fine after a few pulls, but had no power. I changed the plug, replaced the carb completely...nothing helped. Took it to a shop and paid $70 for a tune up that didn't help at all, and the shop owner just said "sorry".
After everything else was done, I pulled the cover off the muffler, (3 screws) then removed 3 screws over a small spark arrestor screen and found it was clogged...cleaned it and guess what...IT WORKS FINE NOW!

The best and easiest fix I have ever done to a small engine. I felt like an idiot, because the exhaust side of the motor MUST be clear to work properly on small engines. The only reason I was removing the muffler in the first place was to check the compression and VOILA!!!

An easy and quick fix I recommend for all Mantis tillers before you waste money on carb issues (which is what the company will tell you to fix to solve this problem).

Apr 19, 2009 | Mantis Tiller

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