Figure 29
Side-discharge Mower Decks Only
1. Bolt
3. Under-deck roller (2)
2. Roller shaft 4. Bracket
5. Install the fasteners as illustrated.
The Safety Interlock System
If the safety inter lock s witches ar e
disconnected or dama ged the machine
could operate unexpectedl y causing
per sonal injur y .
• Do not tamper with the inter lock
s witches.
• Check the operation of the inter lock
s witches dail y and r eplace an y dama ged
s witches bef or e operating the machine.
Understanding the Safety Interlock
System
T he safety interloc k system is designed to prev ent
the engine from star ting unless:
• Y ou are sitting on the seat or the parking brak e
is eng ag ed.
• T he po w er tak e off (PTO) is diseng ag ed.
• T he motion control lev ers are in the neutral
loc k ed position
• T he engine temperature is belo w the maxim um
operating temperature .
T he safety interloc k system also is designed to stop
the engine when the traction controls are mo v ed
from the neutral loc k ed position with the parking
brak e eng ag ed. If y ou rise from the seat when the
PTO is eng ag ed there is a 1 second dela y and then
the engine stops .
Testing the Safety Interlock System
T est the safety interloc k system before y ou use
the mac hine eac h time . If the safety system
does not operate as described belo w , ha v e an
A uthorized Ser vice Dealer re pair the safety system
immediately .
1. Sitting on the seat, eng ag e the parking brak e
and mo v e the PTO to on. T r y star ting the
engine; the engine should not crank.
2. Sitting on the seat, eng ag e the parking brak e
and mo v e the PTO to off . Mo v e either motion
control lev er (out of neutral loc k ed position).
T r y star ting the engine; the engine should not
crank. R e peat for other control lev er .
3. Sitting on the seat, eng ag e the parking brak e ,
mo v e the PTO switc h to off and mo v e the
motion control lev ers to the neutral loc k ed
position. No w star t the engine . W hile the
engine is r unning, release the parking brak e ,
eng ag e the PTO and rise slightly from the seat;
the engine should stop within 2 seconds .
4. Without an operator on the seat, eng ag e the
parking brak e , mo v e the PTO switc h to off and
mo v e the motion control lev ers to the neutral
loc k ed position. No w star t the engine . W hile
the engine is r unning, center either motion
control; the engine should stop within 2
seconds . R e peat for the other motion control.
5. Without an operator on the seat, diseng ag e
the parking brak e , mo v e the PTO switc h to
off , and mo v e the motion control lev ers to
the neutral loc k ed position. T r y star ting the
engine; the engine should not crank.
Using the SCM to Diagnose System
Problems
T he mac hine is equipped with a standard control
module (SCM) monitoring system that trac ks the
function of v arious k ey systems . T he SCM is
located under the right control panel. Access it
through the side panel co v er ( Figure 30 ). T o open
35
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