Wash-Out Reference Pin for EX Rotor Head HI0404137 by Hirobo  [HI0404137]

Wash-Out Reference Pin for EX Heads

Designated HI0404137 in Hirobo parts listings, this stainless guide pin provides a simple mechanical reference to assist wash-out alignment on EX rotor heads. It is built to give repeatable positioning during tuning sessions and routine assembly.

To fit the pin, identify the seating hole in the rotor head, insert the pin with care, and verify the wash-out linkages move freely throughout their range. Use appropriate hand tools and modest torque to secure any retainers so the pin and surrounding alloy parts are not overstressed.

In practice the pin supports tuning by providing a consistent datum for blade tracking work. It speeds reassembly and helps validate that settings remain unchanged after servicing. Regularly examine the pin for straightness and surface damage and carry spares to keep workshop time to a minimum.