Cylinder kit for Husqvarna 262 262XP 257 # 503907971 503541171 503541172

This Husqvarna 262XP cylinder and piston kit features a 48mm cylinder and fits compatible Husqvarna 261, 262 and 262XP chainsaws. It is intended to replace a damaged or worn engine cylinder assembly when compression is reduced, scratches appear on the cylinder surface, or the piston is damaged due to overheating.

The numbers associated with this cylinder assembly are 503 54 11-71, 503 54 11-72 and the later 503 90 79-71. In parts catalogs the number 503541172 is replaced by number 503907971.

Compatible Husqvarna models

The 48mm cylinder kit fits:

Husqvarna 261
Husqvarna 262
Husqvarna 262XP
Selected Husqvarna 262XPH versions

Part numbers:

503 54 11-71
503541171
503 54 11-72
503541172
503 90 79-71
503907971

These numbers belong to the 48mm Husqvarna 261 and 262 cylinder assembly group. Therefore, before ordering it is necessary to compare the decompression valve port, intake port, exhaust port and the cylinder mounting points.

Included parts

The kit includes:

48mm cylinder
Piston
Piston rings
Piston pin
Piston pin retaining rings

The cylinder and piston replace the primary components that form compression. However, new parts will not resolve air leaks, lubrication issues, or crankshaft mechanism failure.

Therefore, before installation check the crankshaft bearings, connecting rod, piston pin bearing and engine seals. Also inspect the carburetor, intake system, fuel supply, air filter, cooling fins and the muffler. An overly lean fuel mixture or a leaking intake system can repeatedly damage the piston.

Thoroughly clean the sealing surfaces and prevent debris from entering the crank mechanism. Also check the piston orientation, ring positioning and the installation of the retaining rings. You can find more related components in the Husqvarna chainsaw parts category.