Universal Chainsaw Service Tool for 2-cycle engines (chainsaws, brushcutters, leaf blowers). Compatible with Husqvarna, Echo, and other major brands — a must-have for professional loggers and DIY mechanics. Piston-safe design with a precision-moved full-radius tip that engages the piston crown without scratching or denting. Remove the spark plug, thread the tool into the cylinder (M14x1.0 standard thread), and gently tighten to securely lock the crankshaft. Left-threaded finish designed for chainsaw clutch systems (typically left-hand threads). Orange/black steel construction withstands high torque during clutch removal, while the compact design fits in any tool bag. Multi-engine application works on both horizontal and vertical cylinder engines. Ideal for clutch/flywheel replacement, timing adjustments, carburetor repairs, and general engine maintenance.