STIHL has learned that a limited number of TS 410 and TS 420 cut-off machines in the below noted serial number range were assembled with the flywheel-to-crankshaft connection overtightened. Overtightening of this connection may damage the flywheel, which could cause the flywheel to fail and break apart while the engine is running.
A failure during the operation of the machine would pose a projectile hazard to the user or a bystander. A damaged flywheel is not apparent from a visual inspection.
Affected serial number range: 189609507 – 189960002.
Please enter your TS 410 or TS 420 serial number to find out if your unit is included in the recall.