Engine Starting - HUSTLER 3700 Operator's Manual

Tilt wheel
Figure 3-16
maximum lift height. If it does not stop refer to the
PTO Safety Shut-off System section for more
details.
WARNING: For safe operation, do not attempt to
override or bypass either of these systems. If either
system fails to function, it should be repaired before
using the unit.
PTO safety shut-off system
The 3700 power units are equipped with a cable operated
system that will disengage the PTO when the right lift arm
reaches a point near maximum lift. This shut-off system
provides protection to the driveline of the attachment and
prevents the deck from operating when the mower deck (or
other powered attachment) has been raised to the maximum or
flipped up for service. Figure 3-11 & Figure 3-18
This system disengages the linkage between the PTO
control lever and the PTO lever on the transmission but, it
does not move the PTO control lever from the PTO engaged
position to the disengaged position.
If the PTO Safety Shut-Off System is activated during
operation, the operator need only lower the attachment, pull
the PTO control lever back to the disengaged position and
then move it forward again to re-engage the PTO.
It should be tested before first operating a new attachment
and, if necessary, adjusted every 100 hours of operation or
whenever the operator notices the PTO Safety Shut-Off
System is not operating correctly. NOTE: The power unit
does not have to be running to test the system.
To test the system:
1. Raise the lift arms to the maximum lift position.
2. Turn off the engine and engage the PTO control lever
by pushing it forward. If no resistance is encountered
when moving the PTO control lever forward into the
engaged position the PTO Safety Shut-Off System is
REV F
operating correctly. If resistance is encountered, then
the cable needs to be adjusted.
3. The PTO safety shut-off cable adjustment is located
behind the right front wheel and can be reached
without removing the wheel. With the PTO
disengaged, adjust the cable by loosening the lower nut
and turning the top nut so that the cable is pushed down
into the bracket. Tighten the lower nut against the
bottom of the bracket. Figure 3-17 & Figure 3-18
4. After adjustment, repeat Steps 2 and 3 until the PTO
Safety Shut-off System is working properly.
Bracket
Cable
Bracket
Lower
nut
PTO Safety Cable

Engine starting

The 3700 safety start interlock system is designed to protect
the operator and others from accidental injury due to
unintentional engine starting. The engine starting motor will
not engage until:
1. The operator is seated
2. HST foot pedals are released (neutral position)
3. PTO lever is in the disengaged "OFF" position
4. The master brake pedal is depressed or park brake
lever is engaged.
3-8
Upper nut
Lower nut
Figure 3-17
RH lift cylinder
Upper nut
RH lift
arm
Figure 3-18
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