Page 4-6
Rev. 1 Jun/11
TESTING AND TROUBLESHOOTING
61-00-75
Propeller Owner's Manual
175
(g) If the engine speed stabilizes at a higher RPM than it
was previously running, then the governor maximum
RPM stop setting is incorrectly set.
1
Make additional fine adjustments to the governor
maximum RPM stop setting until the rated
maximum RPM is reached.
(h) If the engine speed does not increase from the RPM
that it was previously running, then the propeller low
pitch angle is probably incorrect.
C. Maximum RPM is High
(1) Engine power is high.
(a) Follow the aircraft POH and/or AMM recommended
engine checks to determine if the engine power is
high.
(b) If the engine power is high, refer to an appropriately
licensed engine service facility or to the engine
manufacturer.
(c) If the engine power is within acceptable limits,
examine the maximum RPM stop setting of the
governor.
(2) Governor maximum RPM stop setting
(a) When RPM is high, both the governor maximum
RPM stop and the propeller low pitch blade angle
are misadjusted.
(b) Adjust the governor maximum RPM stop to obtain
the rated maximum RPM.
(c) Inspect the propeller low pitch stop as described in
the Propeller Equipment and Setting section of the
Maintenance Practices chapter of this manual.
(3) Propeller low pitch setting
(a) For low pitch verification refer to the procedures in
the Propeller Equipment and Setting section of the
Maintenance Practices chapter of this manual.
OBSOLETE PROPELLER MODELS. SEE COVER PAGE
WARNINGS AND SERVICE BULLETIN HC-SB-61-331
