S&S Cycle Cycle Guardian Diagnostic System - Manual (Page 15)

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Engine Usage Since Rebuild/New
This shows the percentage of total operating hours in specific RPM
and MAP ranges, along with a breakdown of the percentage of
total operation at specific temperature ranges. This data is reset to
zero when the "Do Rebuild" function is performed.
Maximums
To view the "Maximums" information, click on the tool
bar button, and select the "Maximums" tab.
Maximum RPM
This displays the maximum RPM (revolutions per minute) reading
since the engine was new or rebuilt. The head temperature, MAP,
and revolution count that was recorded at the time the maximum
RPM reading occurred is also displayed. This data is reset to zero
when the "Do Rebuild" function is performed.
Maximum Head Temperature
This displays the maximum head temperature reading since the
engine was new or rebuilt. The RPM, MAP, and revolution count
that was recorded at the time the maximum head temperature
reading occurred is also displayed. This data is reset to zero when
the "Do Rebuild" function is performed.
Engine Operation History
This displays the maximum head temperature and RPM readings
that are stored in the IST Ignition Module for the last 3 periods of
operation lasting at least 5 minutes. They are displayed "newest to
oldest". This data is reset to zero when the "Do Rebuild" function
is performed.
Rev Limits
To view the "Rev Limit" information, click on the tool bar
button, and select the "Rev Limit" tab.
Rev Limit History
The "Rev Limit History" shows the current RPM limit programmed
into the IST Ignition Module. It also shows the number of times the
RPM reading has hit this limit, and the total time the engine has
been run at or above this limit. Note that if the break in "Rev-Limit"
is enabled, the ignition system will not record rev-limit hits until
the break-in period is over.