: Covers the cylinder, piston, and crankshaft. Note that parts differ for units starting from serial number 514291126 versus 516674202 .
If you tell me the (e.g., carburetor gasket, clutch drum, fuel filter) and your machine’s first three digits of the serial number , I can look up the exact Stihl part number for you. Stihl Km 94 Rc Parts Diagram
| Symptom | Look in Diagram Group | Most Likely Part | | :--- | :--- | :--- | | Engine won't start, fuel leaking | Group 4 (Fuel System) | Carburetor diaphragm or gasket | | Engine starts, dies when hot | Group 4 (Intake) | Intake manifold (cracked) | | Lots of smoke, poor power | Group 1 (Crankcase) | Crankshaft seal (leaking oil) | | Hard to pull starter rope | Group 2 (Starter) | Broken rewind spring | | Machine runs, but attachment doesn't spin | Group 6 (Clutch) | Broken clutch shoe or worn drum | | Trigger feels loose or stuck | Group 7 (Controls) | Broken throttle return spring on carb | : Covers the cylinder, piston, and crankshaft