Fault Phenomenon: Skyjack SJ3219 scissor lift aerial work platform operating handle is broken, unable to control the spool.

Troubleshooting Process:
– Checked force: excessive force.
– Checked material: poor material.
– Checked fatigue: fatigue.
– Checked impact: collision.

Root Cause: The handle broke due to material fatigue or excessive force.

Required Parts: Multi-way valve handle.