McCulloch Owners Manual - 1 
From inside (document excerpt):
PARTS LIST Description NUT AIR FILTER ASSN CARBURETOR SPACER SCREW SPRING WASHER ISOLATOR, CARBURETOR SCREW SPACER RUBBER, ISOLATOR CYLINDER SPARK PLUG CASE, CRANK CAP, BEARING BEARING CRANK/ROD ASS’Y ROLLER, PISTON PIN, PISTON RING PISTON RING, PISTON HANDLE, LEFT PART TRIGGER, THROTILE TRIGGER, RELEASE SPRING HANDLE, REAR SWITCH WASHER No.