44
Maintenance Instructions
CHECKING/SERVICING
Security of Air Cleaner System
NOTE: The following inspection is only an external
inspection and should be done without “disturb-
ing” the filtration components.
On a daily basis, visually inspect the external condi-
tion of the air cleaner cover.
Check for damage. Make sure the cover is in place
and the cover latches are secure - do not run the
engine without the air cleaner cover in place and
secure.
Battery
NOTE: For initial battery service during setup, refer
to Battery Service in
Assembly Instructions
.
IMPORTANT: Make sure battery is securely
mounted in the frame. A loose battery may cause
damage to the case resulting in acid leakage and
severe damage to the machine. A hazard may be
created by damage to critical working parts and
safety systems.
Cleaning the Terminals
If battery terminals are corroded, remove battery
from the mower. Using a wire brush, remove corro-
sion with a solution of one part baking soda and
four parts water. Rinse with clean water. Coat the
terminals with petroleum jelly or terminal protector
spray to retard further corrosion.
Charging the Battery
Check the battery charge by measuring the specific
gravity of electrolyte; if specific gravity is less than
1.225, the battery will need to be charged as follows:
•
Charge the battery at 15 amps for 10 minutes.
DO NOT exceed 20 amps maximum recommended
charging rate. Charge until specific gravity is at
least 1.250. Total charging time should not exceed
one (1) hour.
Tire Pressure
Inflate tires to pressures shown below:
Deck Caster Wheel = 20 PSI (137 kPa)
Drive
=
15 PSI (103 kPa)
Rear
=
20 PSI (137 kPa)
Wheel Nuts Torque
Check every 100 hours the eight (8) Drive Tire
mounting nuts. They should each be torqued to 75-
85 ft-lbs. (101.7-115.2 N
⋅
m).
Sharpen Mower Blades
Check mower blade(s) for straightness, sharp-
ness, condition of the cutting edge, and balance
every 10 hours of operation (or more often when
mowing abrasive type grass or operating on sandy
soils). Replace blades if worn, bent, cracked, or
otherwise damaged (refer to REPLACING/
REPAIRING the Mower Blades in this section).
Use the following procedure to check and sharpen
blades:
NOTE: Keep blades sharp - cutting with dull
blades not only yields a poor mowing job but slows
the cutting speed of the mower and causes extra
wear on the engine and blade drive by pulling hard.
1.
Stop the engine, remove ignition key, and dis-
connect the spark plug wires before raising the
mower deck to service blades.
2.
Raise the deck and secure it in the tilt-up posi-
tion (refer to Deck Secured in Tilt-Up Position
photo in CLEANING of Grass Buildup in
Mower Housing in this section).
NOTE: PTO shaft must be disconnected
before checking blades for straightness.
DANGER
BATTERIES PRODUCE EXPLOSIVE
GASES
•
Charge the battery in a well-ventilated
area, so that gases produced while charg-
ing can dissipate.
•
Keep sparks, flames, and smoking ma-
terials away from the battery at all times.
•
Make sure the battery cap vents are open
(check manifold vent on each cap).
•
Make sure the battery charger is un-
plugged before connecting or discon-
necting cables to the battery.
DANGER
NEVER operate cutter blades with the
deck in the raised position.
