Static Timing Check - Arctic Cat Cougar Service Manual

LUBRICATION, MAINTENANCE AND TUNE-UP
. 105
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Extension
failures caused by dirt, moisture and wear than
earlier breaker point systems. Different trou-
bleshooting, testing and timing procedures may
be used for the various models, so it is important
to use the correct procedure for the engine being
serviced.
Static timing to verify the flywheel timing
marks may be necessary before using a timing
light to check ignition timing. Most flywheels
are marked with several lines, but the correct
timing mark may not be easily distinguished
from the other lines. The static timing procedure
can be used for the following:
a. to verify and identify factory timing marks.
b. to detect a broken or missing flywheel Woo-
druff key.
c. to detect a twisted crankshaft.
d. to scribe timing marks on a new flywheel.
Dynamic engine timing uses a timing light
connected to the MAG (magneto) side spark plug
lead. As the engine is cranked or running, the
light flashes each time the spark plug fires. When
the light is pointed at the moving flywheel, the
mark on the flywheel appears to stand still. The
flywheel mark should align with the stationary
timing pointer on the engine.
Static timing check
The static timing is used only to locate the
proper position for the ignition timing when the
engine is running at a specific speed. It is impor-
tant to check the ignition timing using the correct
mark and at the rpm listed in Table 9.
1. Open the hood.
2. Remove all the spark plugs as described in
this chapter.
3. On some models, it is necessary to remove the
crankcase inspection plug (Figure 55) or some
other equipment (Figure 56).
4. Install and position a dial indicator as follows:
a. Screw the extension onto a dial indicator
and insert the dial indicator into the adapter
(Figure 57).