Cessna 152 1978, Pilot Operating Handbook

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CESSNA AIRCRAFT COMPANY FOR TRAINING USE ONLY
MODEL 152 4-19
COLD WEATHER OPERATION
Prior to starting with temperatures below freezing, it is advisable to pull the propeller through several
times by hand to “break loose” or “limber” the oil, thus conserving battery energy.
NOTE
When pulling the propeller through by hand, treat it as if the ignition
switch is turned on. A loose or broken ground wire on either magneto
could cause the engine to fire.
Preheat is generally required with outside air temperatures below -18°C (0°F) and is recommended
when temperatures are below -7° (20°F).
Cold weather starting procedures are as follows:
With Preheat:
1. Ignition Switch – OFF.
2. Throttle – CLOSED.
3. Mixtures – IDLE CUT-OFF.
4. Parking Brake – SET.
5. Propeller – PULL through by hand several revolutions.
NOTE
Caution should be used to ensure the brakes are set or a qualified person
is at the controls.
6. Mixture – RICH.
7. Throttle – OPEN 1/2 to 3/4 INCH.
8. Prime – 2 to 4 STROKES depending on temperature.
9. Primer – RECHARGE for priming after engine start.
10. Propeller Area – CLEAR.
11. Master Switch – ON.
12. Ignition Switch – START (release when engine starts).
13. Prime – AS REQUIRED until the engine runs smoothly.
14. Throttle – ADJUST for 1200 to 1500 RPM for approximately one minute after which the RPM can
be lowered to 1000 or less.
15. Oil Pressure – CHECK.
16. Primer – LOCK.