Chainsaw Repair

Yep, and 5.4 kg is about 11.9 lbs. 

first 5000 was with Ignitron sticker instead of Partner on starter.

I don't think I have seen a open port on a 5500/540 yet.
All piston ported/closed port. But they have cuts in case for open ports, but not in gasket and cylinder.

First 5000 and 500 was open ports. Last 500 was piston ported as well as 5000.

A bit confusing about the cuts in case for transfers...

According to IPLs the P540 share the 46mm open port top end with the Husky 55, as do the P543.

Even though your IPL for 540 shows closed port pic.  Run the part number and see for yourself. 

That part number at top of IPL comes back to OPEN port just like the husqvarna 46mm top ends.  503609102   

Even the piston number 503608101  to the husky 55 46mm piston.

Is that all you got? You can't be seriously telling me you rather trust these numbers you find on internet sales sites than the knowledge, info and saws we have on shelf!

You can't use a non ported piston in a cylinder meant to use ported pistons. Transference won't work! Nothing can come up from case.
You cant put a 44 piston in a 444, you can't put a 55 in a 254 or 2054/2055.

If it is finger ported you might get away with lost performance but closed port cylinders will not run unless piston is ported!


Regarding this: http://www.sawagain.com/jonsered-2054-new-oem-piston-ring-assembly-503608101/
This guy is selling a 55 piston as 2054 piston. The poor bastard buying it will need a ported piston.

They have same number but in two seperate brands. It is not same piston used in them!