MAINTENANCE PRACTICES
61-00-15
Page 6-45
Rev. 24 Dec/20
Propeller Owner's Manual
115N
2 Turning the low pitch stop in will increase blade
pitch to reduce RPM, and turning the low pitch
stop out will lower blade pitch and increase RPM.
The low pitch stop has 24 threads per inch.
a Turning the low pitch stop 3/4 of a turn
equals 0.030 inch (0.76 mm) of linear
travel, and will change the blade pitch by
approximately one degree. One degree of
blade pitch will change the engine RPM by
approximately 140-150 RPM.
b Turning the low pitch stop screw one
revolution equals 0.042 inch (1.06 mm) of
linear travel, and results in approximately
1.4 degree blade angle change. A 1.4
degree blade angle change results in an
RPM increase/decrease of approximately
200 RPM.
WARNING:
A MINIMUM OF FIVE THREADS
IN THE CYLINDER MUST
ENGAGE THE LOW PITCH
STOP AFTER ADJUSTMENT IS
COMPLETED.
3 When the low pitch stop is adjusted, torque the
low pitch stop jam nut in accordance with
Torque Table 3-2.
4 Repeat the Static RPM Check in the Testing and
Troubleshooting Chapter of this manual.
(b) Feathering (-2, -5) Low Pitch Stop Adjustment for
Propellers that use a Two-piece Spinner Dome
WARNING:
AIR PRESSURE (-2, -5
PROPELLERS) MUST BE
REDUCED TO 0 PSI BEFORE
ANY LOW PITCH ADJUSTMENT
MAY BE MADE.
1 Loosen the jam nut while holding the low pitch
stop with a wrench to prevent the low pitch stop
from turning.
