Cessna 177 SERIES Service Manual page 178

EGT PROBE-
CLAMP
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A
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(CARBURETORM
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MUFFLER-7
e i A
TAILPIPE -- -
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SHROUD
Figure 11-6.
Exhaust System
made easier by the installation of the manually-oper-
ated engine primer system. Fuel is supplied by a IWIN
line from the fuel strainer to the plunger type primer.
WA
Operating the primer forces fuel to the intake valve
oort of the cylinder. Primer lines should be replaced
Do not heat the oil above 121°C (250°F). A
when crushed or broken and should be properly clamp- flash fire may result.
Before pulling the
ed to prevent vibration and chafing.
With an external
propeller through, ascertain that the mag-
power receptacle installed, an external power source neto switch is in the OFF position to prevent
may be connected to assist in cold weather or low accidental firing of the engine.
battery starting. Refer to paragraph 11-88 for use
of the external power receptacle.
After preheating the oil, gasoline may be mixed with
the heated oil in a ratio of 1 part fuel to 12 parts oil
The following may also be used to assist engine
before pouring into the engine oil sump. If the free
starting in extreme cold weather. After the last
air temperature is below -29°C (-20°F), the engine
flight of the day, drain the engine oil into a clean compartment should be preheated by a ground heater.
container so the oil can be preheated. Cover the
After the engine compartment has been preheated.
engine to prevent ice or snow from collecting inside inspect all engine drain and vent lines for presence
the cowling.
When preparing the aircraft for flight of ice.
After this procedure has been complied with,
or engine run-up after these conditions have been
pull the propeller through several revolutions by
followed. perheat the drained oil. hand before starting engine.
Change 7
11-31