Decompression Valve / Husqvarna 503715301.  Compression Release Valve.

Husqvarna 503715301, Husqvarna 503472001, Husqvarna 503665501, 503665401
HL Supply H11280, Ahlborn FOR-6049
Husqvarna many models of chainsaws; K750 and K760 cutoff saws
Ethanol: Not compatible with greater than 10% ethanol fuel.

HUSQVARNA 345 346 350 353 357 359 362 365 372 390 XP

HUSQVARNA 42, 51, 55 Rancher, 246, 340 e, 345 e, 346 XP

JONSERED 2054, 2055, CS2141, CS2145, 2149, CS2147 CS2150

SR-5*(P)