Listed as HI0404137, this Hirobo stainless steel pin is a mechanical alignment component that mates with EX rotor head features. Its purpose is to provide a consistent datum for setting wash-out and helping to keep blade tracking aligned during assembly and maintenance.
Fitting is simple: locate the pin seat on the EX rotor head, insert the pin with care, and confirm that the wash-out arms move without restriction. Use suitable hand tools and apply moderate torque to fasteners to avoid distorting the pin or nearby alloy parts.
The pin is intended as a reference point in setup workflows rather than an active adjustment device. It helps ensure repeatable positions when replacing blades, servicing the head, or validating settings after repairs. Inspect regularly for straightness and surface damage and store spare pins to minimise downtime.
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