Toro TimeCutter Z420 - Mower and Drive System Maintenance

Figure 33
1. Main-30 amp
3. For optional Headlight
Kit-10 amp
2. Charge circuit-25 amp
4. Battery
Drive System
Maintenance
Checking the Tire Pressure
Maintain the air pressure in the front and rear
tires as specified. Unev en tire pressure can cause
unev en cut. Chec k the pressure at the v alv e
stem after ev er y 50 operating hours or monthly ,
whic hev er occurs first ( Figure 34 ). Chec k the
tires when they are cold to g et the most accurate
pressure reading .
R ear Tires: 13 psi (90 kP a)
F ront Tires (castor wheels): 35 psi (139 kP a)
Figure 34
1. Valve stem
Mower Maintenance
Servicing the Cutting Blades
Maintain shar p blades throughout the cutting
season because shar p blades cut cleanly without
tearing or shredding the g rass blades . T earing and
shredding tur ns g rass bro wn at the edg es , whic h
slo ws g ro wth and increases the c hance of disease .
Chec k the cutter blades daily for shar pness , and
for any w ear or damag e . File do wn any nic ks
and shar pen the blades as necessar y . If a blade is
damag ed or w or n, re place it immediately with a
g en uine T oro re placement blade . F or con v enient
shar pening and re placement, y ou ma y w ant to
k ee p extra blades on hand.
A w or n or dama ged blade can br eak, and a
piece of the blade could be thr o wn into the
operator’ s or bystander’ s ar ea, r esulting in
serious per sonal injur y or death.
• Inspect the blade periodicall y f or w ear
or dama ge.
• R eplace a w or n or dama ged blade.
Before Inspecting or Servicing the
Blades
P ark the mac hine on a lev el surface , diseng ag e the
blade control switc h, and mo v e the motion control
lev ers to the brak e position. Stop the engine ,
remo v e the k ey , and disconnect the spark plug
wire(s) from the spark plug(s).
Inspecting the Blades
1. Inspect the cutting edg es ( Figure 35 ). If the
edg es are not shar p or ha v e nic ks , remo v e and
shar pen the blades; refer to Shar pening the
Blades .
2. Inspect the blades , especially the cur v ed area
( Figure 35 ). If y ou notice any damag e , w ear , or
a slot for ming in this area (item 3 in Figure 35 ),
immediately install a new blade .
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