Cessna 172R Operating Handbook page 91

Temporary Revision for Cessna Pilot's Operating Handbook and
s
Publication Affected:
Serial Numbers Affected:
Description of Change:
Filing Instructions:
Removal Instructions:
IDLE POWER ENGINE ROUGHNESS
(As Required by AD 2001-06-17, Paragraph (d)(3))
An excessively rich idle fuel flow may cause low speed engine
roughness during flight.
(power off stalls, approach
normally in the full-rich position. However, to improve engine
roughness (caused by an improperly adjusted fuel servo) during low
engine speeds while in flight, you should rotate the vernier mixture
control (leaning of fuel mixture). You may also have to lean the fuel
mixture if this low engine
to restart the engine during flight. In all cases,
airplane at the nearest airport for repairs if low speed engine
roughness requires you
engine operation.
FAA Approved Airplane Flight Manual
Model 172R (172RPHUS09), 172R180
(172R180PHUS03),
(172SPHUS05)
Handbook and FAA Approved Airplane
Flight Manual.
Airplanes
172S8001 and On not incorporating
the Nav III Avionics Option (G1000).
New Idle Power Engine Roughness
Information (As Required by AD 2001-
06-17, Paragraph (d)(3)).
Insert this
172R
(172R180PHUS03),
(172SPHUS05)
Handbook and FAA Approved Airplane
Flight Manual adjacent to page 3-20.
This
removed and discarded when the Idle
Power Engine Roughness Information
has been incorporated.
During most in-flight low engine speeds
to
speed results in power loss and you need
adjust the fuel mixture control
to
(Continued Next Page)
17280001
temporary
(172RPHUS09),
temporary
landing, etc.), the mixture control is
172S
and
Pilot's Operating
and On
revision in Model
172R180
172S
and
Pilot's Operating
revision must
you should land the
to improve
172PHTR02
and
be