Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 1446 / 1956

PAGE 2
Feb 28/07
7G24
76-10-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
3. Variable Pressure Controller
A. Controller / Throttle Rigging
With the controller lever against the stop in full boost position, adjust the linkage rod to maintain
0.015 / 0.020 inch clearance between the fuel injector throttle lever and the full throttle stop.
See also Textron Lycoming Service Instruction No. 1431, Supplement 2.
B. Adjustment for Manifold Pressure
(1) Warm up the engine until the oil temperature is 170°F to 190°F.
(2) Ensure mixture control is full rich and propeller control is at full rpm (2,500 rpm).
(3) Slowly advance the throttle lever to full throttle or 42.0 in. Hg. manifold pressure.
(4) If the throttle reaches full forward prior to the manifold pressure reaching 42.0 in. Hg.,
INCREASE manifold pressure by turning the controller adjustment bolt counterclockwise.
NOTE: A general relationship between the number of turns on the controller adjustment and
manifold pressure is one turn per 1.0 inch of manifold pressure.
(5) If the manifold pressure reaches 42.0 inches prior to the throttle reaching full forward position,
DECREASE manifold pressure by turning the controller adjustment bolt clockwise.
(6) Repeat steps (3), (4), and (5) as required to establish 42.0 in. Hg. manifold pressure at full
throttle. Tighten adjustment bolt jam nut.