This is an older one 1983,it has two ignition coils,I replaced both coil,new carb
Carb gasket,fuel line,spark plug,air cleaner,has 130 lbs compression
It starts and idles,but won't rev up,some times it will but not to good,checked
The piston,couple of lite lines but not bad,I don't know what else to try,any ideals would be help full,thanks and a new head gasket

Hi,
It could be as simple as the incorrect spark plug gap(0.020" is correct.) Since it idles, it is unlikely an air leak. Sounds as if the fuel is not being mixed in the proper proportion for acceleration and high speed running. A manual is at:
Download Manuals - Husqvarna Garden Equipment Operation Manuals (http://www.husqvarna.com/my/support/download-manuals/?query=61+chainsaw&types=O&brands=)
Peace,
Clarke

That is a good link from Crigby for help with Husqvarna chainsaws (http://yard101.com/1805-Husqvarna-Chainsaws/)

Let us know whether that resolved the problem for you or not