Installing And Removing Main Rotor Blades - Yamaha RMAX Type II G Unit Operation Manual

Pre-Flight Preparation and Inspection

Installing and Removing Main Rotor Blades

How to Install Main Rotor Blades
1 Insert the main rotor blades into the main blade
holder.
G There are two main rotor blades: right and
left. Install them by matching the color of
the mark of the respective main rotor blade
to the blade holder.
G Each main rotor blade has a top and bot-
tom. Install it so that its leading edge is
oriented in the direction of rotation as
shown in the cross section diagram.
G Check that the main rotor blades are free
of debris such as pollen or bugs before
installing them.
2 Use an 8mm hex wrench to tighten the retaining
bolts.
Check the tightening of the retaining bolts as fol-
lows:
G Tighten each retaining bolt until it comes to a
stop. Then, back it out between 45° to 90°.
Make sure it is not tightened or loosened
excessively, which could cause vibrations.
G The
main
installed if their retaining bolts do not
wobble when the blades are moved verti-
cally, and if they move smoothly in the
direction of rotation when a small force is
applied.
G Tighten both rotor blades to approximately
the same amount of torque.
G Check that the main rotor blades move
smoothly by moving them slightly in the direc-
tion of rotation. They are designed to stop by
coming in contact with rubber stops if they are
moved extensively.
How to Remove Main Rotor Blades
Remove the main rotor blades in reverse order of
installation.
4-15
NOTICE
TIP
rotor blades are
Mark
Align groove to bolt
properly
Hex Wrench
Retaining Bolt
Blade Holder
Mark
Direction of rotation
Cross Section Diagram
Direction of rotation
Retaining Bolt
Main Rotor Blade
No wobble in this direction
Main Rotor Blade