Cub Cadet MTD 70 Series - Manual (Page 94)

61, 65 and 70 Series Vertical Shaft Engines
88
9c. Simple spark-testers are readily available and
inexpensive. Thexton Part # 404 is available
from a variety of retailers, and similar units are
available form other manufacturers. See Figure
7.8.
9d. At operating speed, the ignition should produce
voltage approaching 12,000. See Figure 7.9.
9e. At pull-over speed (~ 600 RPM), voltage should
be at least 10,000V. See Figure 7.10.
NOTE: Flash-over voltage will vary with spark plug
condition and gap.
NOTE: Pull-over speed may vary from operator to
operator.
Figure 7.8
Instructions on
back of package
Figure 7.9
1 reticle = 4,000 Volts
waveform is
3 reticles tall
Figure 7.10
Pull-over speed: waveform is half-way
between 2nd and 3rd reticle (10,000 V.)