EX Series Wash-Out Guide Pin HI0404137 for Hirobo  [HI0404137]

EX Wash-Out Alignment Pin

This guide pin, listed as HI0404137 in Hirobo documentation, is a stainless steel alignment part made to mate with EX rotor head geometry. It is a simple mechanical locator that helps set wash-out and maintain blade tracking during routine head assembly and setup.

Fitting is direct: locate the guide pin seat on the rotor head, insert the pin without force, and check that the wash-out arms move freely through their range without binding. Use hand tools and modest torque on retaining hardware to avoid bending the pin or stressing nearby alloy components.

As a setup aid the pin serves as a positional reference rather than an active tuning device. It speeds repeatable blade tracking when swapping blades or reassembling the head after service. Inspect the pin for straightness and surface marks during maintenance and keep spare pieces available to cut bench time.