19
LAWNAIRE ZTS
MAINTENANCE
CHECK DAILY
Operator Presence Interlock System - Start Operation
For the engine to crank, the parking brake must be ON, and the operator present control lever must be re-
leased in the neutral position. Stand on the operator platform and check, one by one, if the engine will crank
with the parking brake OFF or the operator control lever held down.
Operator Presence Interlock System - Run Operation
In order for the engine to run, the operator must either be standing on the platform, or walking behind the unit
with the platform up, the parking brake in the OFF position and the LH control handle held down out of the
neutral position.
The engine may also run if the parking brake is in the ON position, the LH control handle is rotated up into the
NEUTRAL position.
To check:
1. Start the engine and run at 1/2 throttle.
2. With the LH control handle in the NEUTRAL position rotated up, move the parking brake lever to ON
move the LH control lever down. The engine should kill.
Repair machine before using if the Operator Presence Interlock System does not operate correctly in start or
run. Contact your authorized dealer.
Hardware
Tighten any nuts and bolts found loose. Replace any broken or missing cotter pins. Repair any other
problems before operating.
Tire pressure
Rear Tires should be kept inflated at 15 lbs/in
2
(1.05kg/cm
2
). Improper tire inflation can cause rapid tire wear
and poor traction. Uneven inflation can cause uneven aerating. Front tires should be 25 lbs/in
2 .
(1.75 kg/cm²).
Engine Maintenance
-Air Filter: Maintain the air filter according to the manufacturer's engine owners manual.
-Engine Oil: Check engine oil level daily. Top off if necessary. See engine owners manual.
BATTERY-
AGM TYPE BATTERY SUPPLIED
Battery acid is caustic and fumes
are explosive and can cause serious injury or death.
Use insulated tools, wear protective glasses or
goggles and protective clothing when working with
batteries. Read and obey the battery manufacturer’s
instructions.
Be certain the ignition switch is OFF and the key has
been removed before servicing the battery.
1. Verify battery polarity before connecting or dis-
connecting the battery cables.
2. When installing the battery, always assemble
the RED, positive (+) cable first. and the ground,
BLACK, negative (-) cable last.
3. When removing the battery, always remove the
ground, BLACK, negative (-) cable first and the
RED, positive (+) cable last.
4. AGM type battery. Use AGM charger when
charging. P/N 4171973
5. Clean the cable ends and battery posts with steel
wool. Use a solution of baking soda and water
to clean the battery. Do not allow the solution to
enter into the battery cells.
6. Tighten cables securely to battery terminals and
apply a light coat of silicone dielectric grease to
the terminals and cable ends to prevent corro-
sion. Keep terminal covers in place.
