TP-5393 9/933-12 Scheduled Maintenance
Electronic Governor
The governor control system consists of an electronic
isochronous governor, an electro-mechanical actuator,
andamagneticpickup. Electricalpulsesaresuppliedby
the magnetic pickup to the isochronous governor
(controlunit)eachtimeoneoftheringgearteethpasses
the pickup. The control unit then compares the
frequency of these pulses to a pre-set reference and
provides a signal to the actuator which, in turn, controls
the carburetor and hence the engine speed. This is a
closed loop system and typically provides ± 0.25%
steady state speed regulation.
Air Cleaner
The engine is equipped with a dry-type air cleaner.
Every50hours (moreoftenifoperatingunderextremely
dusty or dirty conditions) remove element and service
by tapping element lightly against flat surface to
dislodge loose surface dirt. Do not clean inany liquid or
blow out with compressed air as this will ruin filter
material in element. Service air cleaner after each 50
hours of operation. If dirty, bent, or damaged replace
element with genuine Kohler replacement.
1-905
Figure 3-14. Air Cleaner Service
NOTE
Replacement of the air filter must be of a flame proof,
self-extinguishing material (Kohler Part No. 278612).
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