Cessna 1973 172 - Starting Engine

ness is held in place by two retaining clips, one above the door and one
on the front of the forward door post. When stowing the harness, place it
behind both retaining clips and secure the loose end behind the retaining
clip above the door. The optional rear seat shoulder harnesses are at-
tached just below the lower corners of the rear window. Each rear seat
harness is stowed behind a retaining clip located at the bottom edge of the
aft side window.
To use the front and rear seat shoulder harnesses, fasten and adjust
the seat belt first. Remove the harness from the stowed position, and
lengthen as required by pulling on the end of the harness and the narrow
release strap. Snap the harness metal stud firmly into the retaining slot
adjacent to the seat belt buckle. Then adjust to length by pulling down on
the free end of the harness. A properly adjusted harness will permit the
occupant to lean forward enough to sit completely erect but is tight enough
to prevent excessive forward movement and contact with objects during
sudden deceleration. Also, the pilot will want the freedom to reach all
controls easily.
Releasing and removing the shoulder harness is accomplished
pulling upward on the narrow release strap and removing the harness
stud from the slot in the seat belt buckle. In an emergency, the shoulder
harness may be removed by releasing the seat belt first and pulling the
harness over the head by pulling up on the release strap.
STARTING ENGINE.
During engine starting, open the throttle approximately 1/8 inch. In
warm temperatures, one or two strokes of the primer should be sufficient.
In cold weather, up to six strokes of the primer may be necessary. If
the engine is warm, no priming will be required. In extremely cold tem-
peratures, it may be necessary to continue priming while cranking the
engine.
Weak intermittent firing followed by puffs of black smoke from the
exhaust stack indicates overpriming or flooding. Excess fuel can be
cleared from the combustion chambers by the following procedure: Set
the mixture control full lean and the throttle full open; then crank the
engine through several revolutions with the starter. Repeat the start-
ing procedure without any additional priming.
If the engine is underprimed (most likely in cold weather with a cold
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