My Mantis will run but I can't get it to "wrap up". It is a 2 cycle gas and about 6 years old. I have rebuilt the carburetor. It's just doggy and won't go into high speed. I have messed with the high speed needle adjustment until I am about ready to drop kick it into the street and let someone run over it. But,....I truly love the machine when it is working right.

In the Mantis 2-cycle tiller:
SV number is located between the gas tank & the carburetor, behind the gas line, on a black and silver tab on the silver engine housing. It will consist of the letters "SV," a number and another letter.

Replace spark plug
Pour out old fuel and replace with 2 cycle fuel. Plan gas will not work!

The carburetor may need cleaned or rebuilt, empty out the fuel and put new in if you have not already. If that doesn't work remove the carburetor, clean it and inspect the diaphragm (small engine shops will do this as well if you don't feel comfortable). Echo engines are great runners but this is very common- rebuild kits and brand new carburetors are available online. The work can be very quick and easy if you are careful and patient, if not then leave it to the pros.

Yes, you have carburetor issues.

Try My Tip on this subject. This should fix your problem:

www.fixya.com/support/r6081405-cleaning_small_engie_carburetor

Good Luck!

Jim

Hi, I also have a small garden tiller (not a Mantis) that experienced a similar problem. What I did was remove the carberator and completely cleaned it with standard spray carb. cleaner (this is available at ant auto parts store or Wal-Mart). After I cleaned and reinstalled the carb. it ran fine. This was two years ago and it has been running fine since. What I believe happened was the gas evaporated and the remaining residue from the gas "gunked" up the carb. Once it was removed, the problem was solved. If this does not work, take a look for any broken wires. Sometimes a rodent will make a meak out of a wire. This happened to one of my cars. Good Luck!

Carburetor problem. Two stroke engines use oil mixed with gas. Old fuel or setting over the winter will cause varnish and sludge in the Carburetor. Start by buying a can of carburetor cleaner and mixing a new can of fuel.
1) Dump the old fuel and check replace it with new.
2) Remove the air cleaner.
3) Pump the prime bulb 3 or 4 times, set the choke, spray the insides of the carb with the cleaner and then try and start it . It should sputter and run for a few second but chances are it will take a few sprays to clean the jets

I would pull the tines off of the transmission. You probably have some debris wrapped around the transmission drive shaft(s).
Please let me know.

What kind of engine is it ? Does it have a float carburetor or diapram carburetor ?

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

Your quickest fix for this problem is to simply replace the carburetor, a Zama K54A. Do it all the time. After that, if you can find a 2 cycle oil, Opti-2, it's the best you can use and it's a one mix for all your 2 cycle equipment (blowers, trimmers, chainsaws, etc.) It's the only 2 cycle I sell in my shop.