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Section 2: Operating Procedures
ZT60i & ZT72i (S/N 748109-) Accu-Z
®
Zero Turn Mowers 357-398M
4/1213
Table of Contents
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Never modify engine RPM, or any parts on the mower
without authorization. Unauthorized modifications will
void warranty to all parts directly and indirectly affected
by the modification.
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Take care when driving around trees so as not to
scrape them.
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Do not make turns so sharp as to cause trailer or
implement being towed to come in contact with the
mower. Slow down and watch carefully when forced
to make sharp turns.
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Do not attach an implement, trailer or other device to
the hitch that will produce negative tongue weight.
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Do not tow mower with its wheels on the ground.
Always tow mower loaded on a trailer.
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Always disconnect negative battery terminal before
making adjustments to the mower electrical system or
welding on this mower.
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Maintain proper tire inflation. See “Tire Inflation Chart”
on page 63.
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All hardware should be checked daily for tightness.
Refer to the “Torque Values Chart” on page 62.
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Always check wheel lug nut torque values two hours
after initial operation and two hours after each tire
repair and/or replacement. Routinely check lug nut
torque valves every 50 hours of operation. See
"Torque Values Chart" on page 62.
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Do not alter the Accu-Z in any way or use the Accu-Z
for a purpose for which it was not designed.
Transporting Safety
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The mower’s control levers are very responsive. For
smooth operation, move levers slowly, avoid sudden
movement. Skill and ease of operation come with
practice and experience.
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Inexperienced operators may have a tendency to
over-steer and lose control. Slow-moving practice
maneuvers are recommended to become familiar with
these characteristics before attempting normal speed
operation.
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Sharp depressions or raised obstacles (i.e. gutters or
curbs) should not be directly approached at high
speeds in an attempt to jump them as the operator
could be thrown from the mower. Approach the
obstruction slowly at an angle. Continue at an angle
until both wheels clear the obstruction.
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When turning on soft wet turf, keep both wheels rolling
either forward or backward. Pivoting on one stopped
wheel can damage turf.
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Use extreme caution when driving through dry grass,
brush and other fire hazard materials. Never stop or
park over combustible materials. Keep grass and
brush from collecting on and around engine and
muffler parts.
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Use extreme caution when cresting hills or when
visibility is limited. Proceed slowly until you are sure
conditions immediately ahead are safe.
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Do not operate mower at night. With poor visibility,
night operation can lead to a serious accident.
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Do not operate mower on streets, highways, public
roads, or where it may be a hazard to faster moving
traffic.
Mower Deck Operation
!
DANGER
Never attempt to make any adjustments to the mower deck
while engine is running or with blades engaged. Mower
blades cannot be seen and are located very close to the deck
housing. Fingers and toes can be cut off instantly.
Keep blades sharp. Many problems with incorrect
cutting patterns are due to dull blades or blades that have
been sharpened incorrectly. Information on sharpening
blades is listed in the maintenance section on page 49. In
addition, most communities have individuals or
companies which specialize in sharpening mower
blades. Blade sharpness should be checked daily.
Refer to Figure 2-9:
Use high blade speed. The throttle setting directly
controls blade speed. With engine running at a medium
speed, engage blades. Advance engine throttle to full
rpm once blades have become fully engaged. Peak
cutting performance is maintained when the throttle is set
at full rpm. This gives maximum power to the drive wheels
and deck blades when needed. Use control levers to
control ground speed rather than engine rpm.
Blade Engagement Switch & Throttle Control
Figure 2-9
Select a mowing pattern that discharges cut grass
away from uncut grass. Generally, this means using a
pattern utilizing left turns because the mower discharges
cut grass to the right. In any case, avoid discharging cut
grass onto an unmowed area because grass is then
mowed twice. Mowing twice puts an unnecessary load
on the mower and reduces mowing efficiency.
NOTE: Engaging blades at high engine rpm or
when under heavy load (in tall grass for example)
can cause belts to slip, resulting in premature belt
wear and breakage.
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Blade Engagement
Switch
Throttle Control