Stihl 017,018,MS 170,MS180 chainsaw carburettor carb ZAMA C1Q-57A type

Stihl MS 170,180,017,018 replacement carb ZAMA C1Q-57A type. This carb has NO screws for high and low adjustment. This must be the same as the one being replaced or it will not fit. Replaces OEM 1130 120 0603 Brand new This is good quality non original replacement part. Please,check your old part with the pictures!