My K760 cut saw starts first time ticks over ok, and cutting blade turns for around 10m seconds or so at full reves, then blade stops, and then starts to jolt, even when full reves are applied, engine

What kind of saw is it...how old is it??

Make sure the blade is attached correctly. It sounds like it is not secured.

Has it enough compression ? because i have the experience it have a questionable closing system for carburetor air filter it is not always fully locked take care to close it replace parts if its not as soon as this problem is there or its to late , on the way it should but when it is not good closed it leaks in much cases and the piston had often grooves by polution from graveldust it can have lost compression by it first to do is control the piston.
In the event that all of this is not the subject the tank airiation and fuelhoses to control.
51MM Cylinder Piston Kit For HUSQVARNA PARTNER K750 K760 REP 506 38 61 71

Sounds like your blade is not secured to the drive shaft. Hold blade against a piece of wood and tighten bolt.

I would suspect a combination of the two! You blade probably isn't sharp and your saws brushes are probably getting worn. The brushes are made of carbon and are pushed up against the rotor by a spring. As the brush wears down the spring doesn't put as much pressure on the brushes which means it will stop working when placed under heavy load.

The K760 black cutter blade is called a Cut-n-Break blade. The manufacturer states that it has an improved stable core to increase its performance. I have a friend who recycles scrap metal and uses the Mastercraft 5" dual cutter. It cuts through metal like butter without any kickback.

Hope this helps,

Handie Andie

"H" is high speed and "L" is low speed. Turn both screws in full, then unscrew them one and a half turns each. Start the saw, you may have to adjust the trottle screw to keep it running.Then adjust the "L" screw a little, in or out, with the trottle screw until you are happy with it ticking over. then adjust the "H" screw to get it to run full. You need time and patience. Stephen.

a lot of people have this problem with a chain saw and cant get a strate cut, most of the time its down to them trying to force the saw through the wood and in doing this the saw cuts around corners as there pull is not square to the cut,, let the saw do the work, not you, if your pulling on the saw to make it cut well then it has a very dull or blunt blade,,,is there any side to side "rock" on the chain in this new bar? how have you sharpend it? dose the chain have the same pitch on both side's? are all the teeth cutting at the same depth? if its cutting around corners it could still be the chain pitch worn out, if so the chain is past its best as well, but most of the time its all down to how hard and how squarely your pulling on the blade when cutting,,,the first thing in logging to lurn is to cut squarely no easy task that! just dont force the saw to cut!! it will cut just as fast or faster without forseing it,, if all this still dont get you cutting right change the chain for a new one,,,the only hard work with a chain saw is holding it up to the tree and humping it around not cutting with it, thats the blade's job to do so the faster you try to make it cut the more out of true the cut go's as all your doing is bending the bar out of alinement,,all in all, its two hands for the job and a very gentle pressure on the saw, start the cut with the blade spinning and dont stop the blade in the wood, cut right through