HIPA RB-105 Carburetor Repair Kits Gasket for STIHL MS210 MS230 MS250 Chainsaw C1Q-S75 C1Q-S76 C1Q-S84 C1Q-S85 Repalcement manufacturer part number: RB-105 Fits STIHL MS210 MS230 MS250 chainsaw with the following carburetors ZAMA C1Q-S75 C1Q-S76 C1Q-S77A C1Q-S90A C1Q-S76 C1Q-S84A C1Q-S84B C1Q-S85A C1Q-S85B