Maintenance Instructions
H37i
Checking and Servicing
60
Charging the Battery
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 charger is un-
plugged before connecting or discon-
necting cables to the battery.
IMPORTANT:
Always disconnect the negative (-)
battery terminal before charging. Failure to do so
can result in damage to the ECU.
1. Disconnect the battery terminals–negative (-)
first.
2. Charge the battery at 15 amps for 10 minutes.
DO NOT
exceed 20 amps maximum recom-
mended charging rate. Total charging time
should not exceed one (1) hour.
3. Reconnect the battery terminals starting with
the positive (+) terminal.
Tire Pressure
Inflate tires to pressures shown below:
Deck Caster Wheel
=
20 PSI (137 kPa)
Drive
=
15 PSI (103 kPa)
Tailwheel
=
20 PSI (137 kPa)
Wheel Nut Torque
Check the eight (8) nuts that mount the drive tires.
Every 100 hours
they should be torqued to 75 to
85 lb·ft (102 to 115 N·m).
Sharpen Mower Blades
Check mower blade(s) for
straightness, sharp-
ness, condition of the cutting edge,
and
bal-
ance 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
Mower
Blades on page 68
). Use the following proce-
dure 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
Grass Buildup in Mower
Deck Housing on page 56
for deck raising
instructions.
DANGER
NEVER operate cutter blades with the deck
in the raised position.
NOTE:
PTO shaft must be
disconnected
before checking blades for straightness.
3. Check the blades for
straightness
by marking
the blade tip position inside the deck housing,
and then rotating the opposite end of the blade
to the same position and comparing. If the
diff erence in blade tip track is
more than 1/8
in. (3 mm),
the blade is bent and
should be
replaced.
WARNING
DO NOT try to straighten a blade that is
bent. NEVER weld a broken or cracked
blade. ALWAYS replace with a new blade to
assure safety.
