Husqvarna 266-SE Suddenly Starter Pulls Hard

[sweidish445]

If the cylinder has the decompression port built in it's cake.. you would need a quality 1/8in drill bit and a tap for cutting the threads.

For obvious reasons i would recommend removing the cylinder!! if you dont love your saws like i do, you could probably get away without removing the cylinder.. i imagine you could make a hose attachment to vacuum out any metal shavings in the cylinder. Again, dont try this at home folks! Lol

Center punch the decomp port and drill through to the bore.. the hard part would be removing any burs left from drilling. Cut your threads, install decomp and enjoy your ez-start..

My boss opted out for the comp valve so i wont be installing one on this 55.. i actually bought plugs to replace the valves on all my saws, but they make them for a reason! Go idea to test the valve for leakage though.. ive pressure tested a hand full of them and the majority leak...

Does that 266 have a spot for one?

 

[sweidish445]

I can verify that tap size also..

 

[sweidish445]

Yep, thats the correct tap, 1/8- 27, 21/64 drill bit. Pictured is my homemade valve tester.. dont judge me, it works!

 

[Huskybill]

The metric decomp valve is 10.1 mm. Thread. You can debut the hole with a reverse back chamfer tool or sand paper the hole on the inside lightly till thevedge sharpness is gone, I’m installing decom buttons using a 3/16” drill first, then the tap drill for the 10.1mm starter tap, then bottom tap. The 3/16” hole won’t allow the compression valve if it ever breaks it can’t get to the cylinder.