During start up, if the engine shuts off, do not restart the engine until the blades have spooled down to low rpm. Re-starting the engine while the clutch is still engaged can result in damage to the rotor head from the abrupt increase in force applied to the rotor head. This is a particular concern on newer engines and on those with electronic ignition or fuel injection, which engage the engine immediately.
If you have experienced a “hard start” with the helicopter in this situation, carefully inspect the rotor head for damage before flying.
If you have any concern, please contact the factory.
