Walker T23 - Page 32

Assembly Instructions T27i
28
● Check condition, cleanliness, and security
of the complete air cleaner system (inspect
air lter paper element every 100 hours).
For detailed procedures, refer to Engine
Air Cleaner System on page 66.
F CHECK ENGINE COOLING SYSTEM
Check that the engine cooling air intake
screen is free of obstruction by grass clippings
or debris and clean if required. Also, cylinder
head cooling ns should be inspected and
cleaned if any build-up of debris is noted
[remove two (2) cylinder head access panels
to inspect and clean]. Refer to Cleaning Cylin-
der Head Cooling Fins on page 69 for this
procedure.
Check performance of the cooling system by
starting the engine, holding a hand adjacent to
the cylinder heads, and feeling the cooling
airow.
DANGER
Make sure to keep hands clear of exhaust
pipe, mu󰀪er, and moving parts when
checking airow.
F CHECK GEAR AXLE OIL LEVEL
Refer to Gear Axle Lubrication on page 61.
F INSPECT FOUR (4) DRIVE BELTS
Engine PTO Drive, Jackshaft Drive, Hydrostat-
ic Ground Drive, and GHS Blower Drive (if
equipped).
F CHECK GRASS CATCHER EXHAUST
SCREEN IS CLEAN (GHS MODEL)
F CHECK HYDROSTATIC TRANSMISSION OIL
LEVEL
Refer to Checking Hydrostatic Transmission
Oil Level on page 64.
F CHECK FUNCTIONS OF INSTRUMENT
PANEL AND WARNING HORN
Turn the ignition key to the ON (RUN) position.
Voltmeter, Oil Pressure Warning Light, and
Warning Horn should all operate, indicating
normal function.
F CHECK FUNCTION OF SAFETY INTERLOCK
SWITCHES
Refer to Safety Switch System on page 76
to check for proper operation of safety switch-
es, both during engine starting and with the
operator leaving the seat with tractor moving
forward or with the mower blades engaged.
F CHECK TIRE PRESSURE
Deck Caster Wheel* = 20 PSI (137 kPa)
Drive = 15 PSI (103 kPa)
Tailwheel = 20 PSI (137 kPa)
* If equipped with optional pneumatic tires
F CHECK SECURITY OF DRIVE WHEEL BOLTS
The eight (8) lug bolts mounting the drive tires
should each be torqued to 75 to 85 lb
·ft (102
to 115 N·m).
F CHECK DECK IS SECURELY ATTACHED
Check for correct deck attachment (hitch pins
and counterweight springs).
F ADJUST MOWER CUTTING HEIGHT, IF
REQUIRED
Position the hitch pins in the four deck support
pins. Refer to the Cutting Height Adjust-
ment decal on the deck gearbox cover.
NOTE: For DS60 deck, see DS60-3 Cutting
Height on page 41 for height adjustment.
F CHECK AND CLEAN GRASS BUILDUP
UNDERNEATH MOWER DECK (and inside
GHS blower, if equipped)
Refer to Cleaning GHS Blower on page 70
for blower cleaning information.
DANGER
Never operate cutter blades with deck in
raised position because it is hazardous.
The tilt-up deck can be secured in the raised
position by unlocking the deck lock levers on
each side of the carrier frame and inserting
the deck hook into the tilt-up latch on the
tractor body. Before operating the tractor,
make sure to re-engage the deck lock levers
after lowering the deck to the normal operating
position.