Husqvarna 539114557, Lawn Mower Model: Husqvarna LSZ 4622, LSZ 5422, LSZ 5424, MZ 5225, MZ 5225 C, RZ 4219, RZ 4619, RZ 4620, RZ 5422, RZ 5424, RZ 5426, RZ5422, RZ5424, RZ5426, RZ54i, Z 254, Z 254i; Poulan Pro 541 ZX; Jonsered Z 54 R; Dixon Speed ZTR 54; Kodiak 52; Ram Ultra 52