Cub Crafters CC18-180 Maintenance Manual page 339

(b) To set the timing of the magnetos to the engine:

Be sure the # 1 cylinder is in the firing position.

Ensure that the mounting surfaces are clean.

Making sure the magneto gear does not move from this position; install the
magneto on the engine with a gasket (5). Secure with clamps (4), washers (3)
and nuts (2); tighten only finger tight.

Using a battery powered timing light, attach the positive lead to a suitable
terminal connected to the switch terminal of the magneto (with the switch turned
on) and the negative lead to any unpainted portion of the engine. Rotate the
magneto in its mounting flange to a point where the light comes on, and then
slowly turn it in the opposite direction until the light goes out. Bring the magneto
back slowly until the light just comes on. Repeat this with the second magneto.

Back off the crankshaft a few degrees and the timing lights should go out. Bring
the crankshaft slowly back in direction of normal rotation until the 25º timing mark
and the hole in the starter housing are in alignment (Refer to Figure 74-00-3). At
this point, both lights should go on simultaneously. If needed, bump the magneto
to adjust the alignment until it is 25 º.
Manual number TC10000AMM
Date: 05/20/08
CUB CRAFTERS, INC.
CC18-180 MAINTENANCE MANUAL
CAUTION
Remove The Timing Pin!
Figure 74-00-3 - Magneto Timing
74-00
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