Stihl Crankshaft Locking Screw Metal by GA Spares

The Prokut Crankshaft Locking Screw (SKU TOL5239M) is a metal piston stop and crankshaft locking tool designed to hold the crankshaft firmly in place during servicing of STIHL chainsaws and other small engines. Made from durable metal, it screws into the spark plug hole to lock the piston and crankshaft, allowing safe removal and tightening of the flywheel nut, clutch and other rotating components. Supplied as a single unit, this locking screw is an essential addition to any saw mechanic's toolkit and offers a reliable, reusable alternative to improvised piston stops. As part of the Prokut and GA Forestry Accessories range, it is a practical, high-quality tool for both professional workshops and home maintenance.

• Durable metal construction for repeated use in the workshop
• Locks the crankshaft and piston to prevent rotation during servicing
• Simple screw-in design for quick fitting and removal

• STIHL chainsaws requiring crankshaft locking during servicing
• Small engine repairs where a piston stop is needed
• Workshop use for flywheel, clutch and crankshaft work

Crankshaft Locking Screw / Piston Stop – a metal service tool for locking the crankshaft and piston during chainsaw and small engine maintenance.