IAI America RCP4W - Manual (Page 75)

4. Maintenance Inspection
69
12) Insert a hex wrench to the holes the grommets were taken out of to tighten the four hex socket head
cap screws to hold the motor cover (at the circled places) with it.
Hole that the
grommet was taken
out of
Hex Wrench
Tightening Torque : 49.8N•cm
Tool to use: Hex wrench 2mm-sized