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bus708


Location: Maryland
Joined: Jul 24, 2010
Points: 321

2 cycle mantis tiller problem (HELP)
Original Message   Apr 16, 2012 11:29 am
I have a mantis 2 cycle tiller. it is about 12 or so years old. I NEVER had a problem with it till last week. It starts and runs ok but I must have the choke at least half way in for it to rev up full throttle. I played with the carb adjustments. The stops make it impossible to a gust property, it needs the high to be opened beyond its stop. Do I need to cut or melt the stops out of the way or do I finally need a carb? I always use sea foam through it. The filter in the tank looks clean, I changed the spark plug . Any suggestions?
This message was modified Apr 16, 2012 by bus708
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Loblolly77


Joined: Mar 17, 2010
Points: 32

Re: 2 cycle mantis tiller problem (HELP)
Reply #3   Apr 17, 2012 9:46 am
try this spray cleaner, as it is safe for plastics and plastic coatings-

http://solutions.3m.com/wps/portal/3M/en_US/Car/Care/Products/Product-Catalog/Pages/?PC_7_RJH9U5230ONO70I0C3275H2K94000000_nid=XWKP81RRFBgs0C8V1JG8WDglXVQWSJ9Q1Cbl

Also, thank the EPA and Ethanol lobby for the ethanol gasahol that is ruining small engines all over the USA. My dealer shoed me a pile of 50 dead blowers, saws, and trimmers in just 1 year!!

Plan on new fuel filter, fuel lines and like the other posters said, a carb diaphram kit. Also, check the muffler spark screen for carbon blockage, and clean the exhaust port with a wood stick.

borat


Joined: Nov 10, 2007
Points: 2692

Re: 2 cycle mantis tiller problem (HELP)
Reply #4   Apr 19, 2012 8:58 am
Skip the snake oils and get the carb kit as previously suggested. 

Diaphragms weaken over time and cannot pump fuel.  Before ordering the kit, if it has a pulse line, make sure it's connected  from the engine to the carb and is in good condition.  I.e. no cracks.   Also ensure the carb is tightly fastened to  the engine.  
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