Stihl 660 starts and runs then loses power and quits when hot

[JacobE]

Many thanks all, especially for the video from Vintage Engine that I found about proper tuning. She does the 4stroke warble at WOT and then runs clean when cutting. Goes back to the burble as soon as you take pressure off.

Milled about 60 board feet of these pine logs today and she runs like a dream. Starts easy and runs great, and I’m back to running on ethanol free pump gas mixed 45:1 instead of the expensive premix in a can stuff.

Made over 20 gallons of sawdust counting by Home Depot buckets

 

[Clyde85]

Glad to hear that it worked out.