The Forestry Forum

General Forestry => Chainsaws => Topic started by: Logger615 on June 21, 2015, 10:53:55 AM

Title: Jonsered Cs2255 Looses aolot of power at full throtle
Post by: Logger615 on June 21, 2015, 10:53:55 AM

While cutting yesterday noticed I started loosing full throttle as I was cutting. Fully warmed up if I try to give it full throttle it bogs down and dies. I can only get to half throttle before it starts loosing power in a big way.  Any ideas?

Title: Re: Jonsered Cs2255 Looses aolot of power at full throtle
Post by: dougand3 on June 21, 2015, 03:43:47 PM

Sounds like a fuel delivery problem. Some ideas...Fuel tank vent partially clogged - does it run better with cap loose? Fuel filter/pickup partially clogged? Fuel line hard or too soft and collapsing? Carb screen partially clogged? Carb diaphragms getting stiff? H screw too lean?

Title: Re: Jonsered Cs2255 Looses aolot of power at full throtle
Post by: ladylake on June 21, 2015, 03:50:23 PM

 
 A lot of good points above, plus check the muffler screen, clogged they will have no power.  Steve

Title: Re: Jonsered Cs2255 Looses aolot of power at full throtle
Post by: Logger615 on June 21, 2015, 05:00:08 PM

Thanks guys, I was figuring some sort of fuel issue. Small engines have never been my strong suit didn't really know where to start, got a few things to check and rule out now!!
Jason

Title: Re: Jonsered Cs2255 Looses aolot of power at full throtle
Post by: lumberjack48 on June 22, 2015, 04:28:44 PM

 Open the low jet about 1/8 th of a turn [ turn it counter clock wise]

Title: Re: Jonsered Cs2255 Looses aolot of power at full throtle
Post by: Spike60 on June 24, 2015, 07:17:59 AM

Is this new and did you buy it at tractor supply? Was it set up and adjusted for you? They won't run right out of the box.