Where can we buy a piston kit for a husqvarna 50 chain saw

I have a homelite piston running in my Husqvarna edger . Most pistons for engines are all the same if the cc's are the same . they only vary in the gudgeon pin size and the location of the pin in the piston. So take your piston to a small engine wreckers and any piston that measurers the same ,looks the same will do the job. then get a new piston for the make that it came out off and it will fit.

Is this machine mechanically sound, remove the muffler and take a look at the piston through the open exhaust port, any signs of scuffinf or damage to the piston skirt and the saw will have to come apart for further investigation.

There are plenty of pirate parts on the web, they are not always the best, but are always much cheaper than original parts.

Depends where you purchase it from, and weather it is a genuine part, check out E Bay there are plenty of people selling parts for the 281XP prices range from £25 to £50 in the UK.

The pisto is readily available from any Husqvarna dealer, the part no. is 503503701, there are also plenty of pirate parts available on the web

just looked at a couple of pistons not sure what the letters mean ,,,but when installing the piston make sure the arrow always points to the exhaust port of the cylinder

Assuming you have fitted the correct spark plug ( BPMR6A ) then it has to be an issue with the piston, if this is a after market piston it could have poor tolerences, the piston crown should be completly flat, not domed, if the piston is slightly too tall it will increse the compression to the point where you can not crank the engine, take the piston out and carfully compare it with the old piston.

Probably going to be a paired piston&cylinder http://www.ebay.com/itm/HUSQVARNA-359-357-CYLINDER-AND-PISTON-KIT-47MM-/140580138020
you will need to replace both.. remove your muffler and see scorched(black streaks) piston, fused rings. Remove air filter and carb to see scored cylinder wall(on hot side)

here is web site

http://www.partstree.com/parts/?lc=husqvarna&mn=576+XP+EPA+%282009-01%29&dn=90_07_0045

576 xp 2009 parts should fit on 575 xp to s/n up to 081700001

but do x ref on parts 1st before purchase

these were on the 2009 576 - service update #1 in that list

check stroke and piston sizes carefully


cheers

Page 17 of your Operator's Manual says 50:1.


Fuel/Oil Mixture

1. Use a quality 2 cycle oil and mix it to the OIL supplier's recommended ratio. Today I use Stihl 2 cycle oil mixed @ 50:1 in a Pioneer that I purchased new in 1980. There are no gouges or scratches on the piston or cylinder and I have no carbon build up on the piston top. The manual (on stone tablets) recommends 24:1. Over the years the mixture has leaned from 24:1 (Saw Recommendation) to 28:1 (Lawn boy mower recommendation) to 32:1 (Oil provider 8oz/2gal - used for many years) and finally the last 5 (±) years 50:1 (Stihl 2.6oz/1gal)
2. Most gas in the US of A contains ethanol; not good with chainsaws. Mix what you expect to use within a few months. Anything over 6 months old use up in a 4 cycle engine. HTH
   Lou