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Grasshopper 721DT User Manual

Grasshopper 721DT
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22
LUBRICATION AND MAINTENANCE
CAPACITIES
Fuel Tank ......................... 8 U.S. gal. (30.2 l)
Units without Hydraulic Lift:
Drive System ................... 2.7 U.S. qt. (2.56 l)
Drive System Fluid Change
approx..................... 2.2 U.S. qt (2.08 l)
Units with Hydraulic Lift:
Hydraulic System................ 0.9 U.S. qt (.85 l)
Hydraulic System Fluid Change
approx...................... 0.9 U.S. qt (.85 l)
TIRE AIR PRESSURE
Drive Tires
Standard 22 x 11 x 10 ......... 8 psi (55 kPa)
Optional 22 x 11 x 10 ........... 8 psi (55 kPa)
(refer to decal on wheel for correct tire air
pressure)
Rear Tires 13 x 6.50 x 6 ..............12 to 15 psi
...............................................(83 to 103 kPa)
DRIVE SYSTEM
Fluid Change ............................. 1000 hours
Filter Change .............................. 1000 hours
CRANKCASE OIL AND AIR FILTER
Refer to the “Engine Manual” for the time ta-
ble for changing or service.
COOLING SYSTEM
Check engine coolant daily when the engine
is cool, before starting engine. Coolant in the
expansion tank does NOT mean the radiator
is full. Remove the radiator cap, with caution.
DO NOT REMOVE THE RADIATOR CAP ON
A HOT ENGINE! Make sure you see coolant
just below the neck of the radiator. Also visu-
ally check to make sure the hose, ttings and
the radiator are in good condition and there
are no leaks. If coolant is required, ll the ra-
diator to just below the neck and then ll the
expansion tank to proper level. Use a solution
of 50% antifreeze and 50% water (freezing
point about -34° F [-36° C]). Do not use 100%
antifreeze or severe damage will occur.
Remove and clean radiator screen regularly.
A dirty screen will cause the engine to over-
heat.
CAUTION
Always wear safety glasses and ear
protection when performing any
maintenance function that could
cause injury to eyes or ears.
Read all safety information on pages 6 through
11.
Lower attachment to ground, shut
off tractor engine, remove key and
wires to fuel solenoid before per-
forming any maintenance.
LUBRICATION
Do not let excess grease collect on or around
parts, particularly when operating in sandy
areas.
The chart gives the frequency of lubrication
in operating hours based on normal operat-
ing conditions. Severe or unusual conditions
may require more frequent lubrication.
Use an SAE multipurpose type grease for all
locations shown. Be sure to clean tting thor-
oughly before using grease gun.
For Drive System and Optional Hydraulic Lift,
use CoolTemp Hydro-Max™ Extended-Life
Hydrostatic Fluid, part no. 345044 for 1 quart
(.94 l) container or part no. 345046 for 2 gal-
lon (7.52 l) container.
Lubricate Every Lubricate Every
8 Hours of Usage 80 Hours of Usage
Rear Wheel Bearings Clutch Power Shaft
(two tting) (two ttings)
Universal Half Shaft
(one tting)
WARNING
Rev. 06-14

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Grasshopper 721DT Specifications

General IconGeneral
BrandGrasshopper
Model721DT
CategoryLawn Mower
LanguageEnglish

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