Replacement Main Blade Holder for GPH 346 - HI0403210 for GPH 346 by Hirobo  [HI0403210]

Main blade holder suited to GPH 346 applications

The Hirobo model HI0403210 main blade holder is presented as a replacement part for GPH 346 fitment and functions to secure the main rotor blade to the rotor head. It helps maintain blade retention, steady sweep, and basic rotor balance when correctly installed.

Recommended fitment checks include confirming full seating in the hub, ensuring retention points align and clamp without side play, and rotating the rotor by hand to verify an even sweep and consistent tracking. Perform staged rpm tests after fitting to catch any vibration or binding early.

When assessing fitment with other aftermarket head components, be mindful of clearance and mounting faces—proper interface and secure fasteners are key to avoiding tracking shifts. Inspect the holder periodically for wear and replace if mounting surfaces or retention holes show deterioration.