Simplicity AGCO Allis 500 Series, Service And Repair Manual

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3 - 11
3 Maintenance
Safety Checks
SAFETY CHECKS
Blade Brake Check
Mower blades and mower drive belt should come to a
complete stop within five seconds after electric PTO
switch is turned off.
1. With tractor in neutral and the PTO disengaged, start
the engine.
2. Look over the left-hand footrest at the mower drive
belt. Engage the PTO and wait several seconds.
Disengage the PTO and check the amount of time it
takes for the mower drive belt to stop.
3. If mower drive belt does not stop within five seconds,
see your dealer.
Safety Interlock System Checks
Your tractor is equipped with a seat switch safety sys-
tem. Check the seat switch operation every fall and
spring with the following three tests.
Test 1 - Engine should NOT crank if any of
the following conditions exist:
• Transmission is out of neutral.
• PTO switch is engaged.
• Clutch/brake pedal is not fully depressed.
WARNING
If the tractor does not pass the test, do not oper-
ate tractor. See your authorized dealer. Under no
circumstance should you attempt to defeat the
purpose of the safety system.
Figure 24. Tractor & Mower Controls - Hydro Model Shown
A. Steering Wheel
B. Throttle
C. Parking Brake Knob
D. Ignition Key/Switch
E. Headlight Switch
F. PTO (Electric Clutch) Switch
G. Mower Height Adjustment Lever
H. Brake Pedal
I. Forward Direction Pedal
J. Rear Direction Pedal
A
H
I
G
F
E
D
C
J
B
Test 2 - Engine should crank if ALL of the
following conditions are met:
• Transmission is in neutral.
• PTO switch is disengaged.
• Clutch/brake pedal is fully depressed.
Test 3 - Engine should shut off if any of the
following conditions exist:
• Operator rises off seat with transmission in gear and
the clutch/brake pedal not fully depressed, and/or the
parking brake is not set.
• Operator rises off seat with clutch/brake pedal not
depressed;
• Operator rises off seat with PTO engaged.
NOTE: Once the engine has stopped, the PTO Switch
(F, Figure 24) must be turned off after operator returns to
the seat in order to start the engine.