Exhaust System; Cooling System; Propeller; Fuel System - Cessna 172SPHUSR05 Pilot Operating Handbook

C ESSNA
MODEL 1 72S

EXHAUST SYSTEM

Exhaust gas from each cyli nder passes th rough riser assemblies
to a m uffler and tai lpipe.
which are constructed aro u nd the o utside of the muffler to form
h eating chambers which supply heat to the cabin.

COOLING SYSTEM

Ram air for engine cooling enters through two i ntake openings i n
t h e front o f t h e engine cowling. T h e cooling air is directed aro u nd
the cyl i nders and other areas of the engine by baffling, and is then
exhausted through an open ing at the bottom aft edge of the cowling.
N o manual cowl flap cooling system control is requ i red.

PROPELLER

T h e ai rplane is equ ipped with a two bladed, fixed pitch, one­
piece forged alu m i n u m alloy propel ler wh ich is anodized to retard
corrosion. The propeller is 76 i nches in diameter.
FU E L SYSTEM
The airplane fuel system (see Fig u re 7-6) consists of two vented
i ntegral fuel tanks (one tank in each wing) , a three-position selector
valve, auxil iary fuel pump, fuel shutoff valve, fuel strainer, engin
driven fuel pu mp, fuel/ai r control u n it, fuel distribution valve and fuel
i njection nozzles.
U N USABLE F U E L LEVE LS FO R THIS A I R P LANE
WE R E
F E D ERAL AVIATION
T O O P ERATE TH E AI R P LANE I N CO M PLIANCE
WITH
SECTION
A M O U NT O F FU E L AVA I LABLE IN FLI G HT.

Revision 4

AIRPLAN E
O utside air is pulled i n around s h rouds
A
WAR N I NG
D ETE R M I N E D
R E G U LATIONS.
FUEL LIM ITATIONS
2
MAY F U RTH E R
&
SYSTEMS D ESCRI PTION
I N ACCO R DANCE
SPECIFIED
REDUCE
SECTION
WITH
FAI L U R E
IN
TH E
7-23
7
el