INSTALLING ALUMINUM ARMS ON METAL GEAR SERVOS

Tools Needed

1. 2.5mm Allen Wrench
2. 5.5mm or 7/32” Open End Wrench

Procedure

□    Thread the 3mm nut onto the 3mm x 22mm bolt. Slide the #4 washer on the bolt.

□      Set up the servo in the aircraft using the radio to determine the arm location.

□    When setting up, use the plastic arm to locate the correct spline.

□    Locate the aluminum arm on the correct spline. Screw
    3mm bolt with the nut and washer finger tight.

Approx. 12 turns – JR NSE 791

Approx. 16 turns – JR DS 8611

Approx. 15 turns – JR DS 8411

Approx. 14 turns – JR DS 8711

□    Tighten nut enough to lock arm to the servo spline.

NOTE: Confirm the location, as it is very hard to remove the arm after it is installed.

□    With the radio on, the 3mm bolt with the 2.5mm Allen wrench and
    tighten the nut. This will press the aluminum arm on to the splines. 

□    Remove the 3mm bolt, nut, and #4 washer. Replace with the factory
    3mm Phillips screw and lock washer.