Ignition System; Air Induction System - Cub Crafters CC18-180 Pilot Operating Handbook

CUB CRAFTERS SECTION 7
CC18-180 AIRCRAFT AND SYSTEMS

7.5.6 IGNITION SYSTEM

Two independent magnetos supply the ignition for the
engine. The pilot must ensure that both magnetos are
operating correctly prior to takeoff. In an emergency, the
engine will continue to run if one of the magnetos fails.
Both magnetos have impulse-couplings so the engine
should be started with both magnetos on. (Impulse
couplings retard the spark during startup and prevent the
propeller from kicking back).

7.5.7 AIR INDUCTION SYSTEM

The induction air for the engine enters through a filter on
the lower side of the cowling. Alternatively, the pilot may
use the carburetor heat control which operates a butterfly
valve allowing heated, unfiltered air into the carburetor.
The control is located on the upper left side of the
instrument panel.
CAUTION
Ground operations with the carburetor heat control in
the hot position must be limited because air
bypasses the filter.
Should the air filter become obstructed, the carburetor air
control provides an alternate means of supplying the
engine with air for the induction system.
It is important that the pilot become knowledgeable about
carburetor icing and the use of the carburetor heat. Cub
Crafters recommends the following publication, available
from the FAA website:
Issued: 05/31/05 REPORT TC10000AFM
Date of Revision: 06/20/14 Page Number: 7-7