Exmark Viking Hydro Operator's Manual page 28

5.1.4 Check safety interlock system.
Service Interval: Daily
a) For your safety, your Exmark mower is equipped with Operator Presence
Controls (OPC). When either the PTO is engaged, or the speed control
lever is not in neutral and both hands are removed from the handles, the
mower engine MUST stop.
b) Check OPC circuits. Clear the area. Disengage the park brake. Run
engine at one-third throttle, then with drive levers and neutral lock latches
in neutral lock position, move the speed control lever out of neutral and
release OPC levers - engine MUST stop.
Again, run engine at one-third throttle, move the speed control lever to
neutral, engage PTO and release OPC levers - engine MUST stop.
Note: Park brake must be disengaged before the speed control lever is
moved out of neutral or PTO is engaged or engine will kill.
c) If machine does not pass any of these tests, DO NOT operate. Contact
your authorized EXMARK SERVICE DEALER.
IMPORTANT: It is essential that all Operator Safety Mechanisms be
connected and in proper operating condition prior to the use of the
mower.
5.1.5 Check for loose hardware.
Service Interval: Daily
a) Stop engine and wait for all moving parts to stop. Remove key or spark
plug wire(s).
b) Visually inspect machine for any loose hardware or any other possible
problem. Tighten hardware or correct the problem before operating.
5.1.6 Service pre-cleaner element and air cleaner.
Service Interval: See Engine Owner's Manual
a) Stop engine and wait for all moving parts to stop. Remove key or spark
plug wire(s).
b) See engine owners manual for cleaning instructions.
5.1.7 Change engine oil.
Service Interval: See Engine Owner's Manual
NOTE: Change oil after first five (5) hours of operation. Follow engine
manufacturers recommendations for future oil changes.
FIGURE 10
BLADE BOLT INSTALLATION
- 23 -
(102-115 N-m)