Savior Carburetor Carb Rebuild Kit for ZAMA RB-77 STIHL 021 023 025 MS210 MS230 MS250 Chainsaw with Zama Carby High quality rebuild carb kit for ZAMA Refer to Part No.: Zama RB-77 Fits:STIHL 021 023 025 MS210 MS230 MS250 chainsaw with zama carburetor Fits zama C1Q model: C1Q-S43, C1Q-S43A, C1Q-S43B, C1Q-S57, C1Q-S57A, C1Q-S57B, C1Q-S137, C1Q-S137A, C1Q-S152 carburetors Note: this carb kit for zama carburetor, not for carburetor (ASIN: B00W0QQVKK)