Husqvarna 460

[Gregyver]

I work on a lot of chainsaws, mostly STIHL. This 460 I've been working on has got me stymied. Assume everything to check out good. Starts right away but within 30 seconds or less it bogs down under no load. Compression is 120 psi, good spark, carburetor is adjusted correctly - hi and lo speed screws are set at 1-1/2 turns each, new metering and pump diaphragms and gaskets, clean spark arrestor, no leaks in any hoses, fuel tank is clean as well as the fuel filter, new air filter, new spark plug, impulse hose is not blocked and working. Can someone please tell me what I am missing because I've been through this saw several times and I'm getting frustrated

 

[sean donato]

Look at the tank vent. Get her running, turn it on the side and crack the fuel cap. If it stays running then look at the vent.

 

[Mad Professor]

120psi is a little low. Pull your muffler and have a look at the piston.

Also is metering lever set proper?

 

[christylleam]

Does it work fine by now?