DOP7262HU336 Husqvarna 336 Chain Adjuster No. 501-45-27-02. This is a quality aftermarket chain adjuster that replaces husqvarna chainsaw part numbers 501 45 27-02, 501452702, 501 81 73-021, 501-81-73-021, 5018173021, 501 81 92-01, 501-81-92-01 and 501819201.