Safety System; Park Brake And Steering; V-Belts - Husqvarna Zero-Turn Z454X Manuel D'instructions

MAINTENANCE

Safety System

The machine has a safety system that prevents
starting or driving under the following conditions.
The engine can only be started when:
• the mower deck is disengaged.
• the steering controls are in the outer, locked
neutral / parking brake position.
IMPORTANT INFORMATION To be able to
drive, the driver must be seated and move
both steering levers in toward each other at the
same time, otherwise the engine will stop.
Make daily inspections to ensure that the safety
system works by attempting to start the engine
when one of the conditions is not met. Change
the conditions and try again.
If the machine starts when one of these
conditions is not met, turn the machine off and
repair the safety system before using the machine
again.
Make sure the engine stops when the park brake
is released and the operator leaves the seated
position.
Check that the engine stops if the mower blades
are engaged and the driver temporarily moves off
the driver's seat.

Park Brake and Steering

Visually check that no damage is found on the
lever, links, or switches belonging to the park
brake. Do a standstill test and check that there
is sufficient braking. For park brake adjustments,
contact the Husqvarna service workshop.
WARNING! Faulty adjustment will result
in reduced braking and can cause an accident.
Tire Pressures
All tires must be at 15 psi / 103 kPa / 1 bar.
IMPORTANT INFORMATION DO NOT add
a tire liner or foam fill material to the tires.
Excessive loads created by foam filled tires will
cause premature failures.
Only use tires specified by Husqvarna.
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V-belts

Check the belts every 100 hours of operation.
Check for severe cracking and large nicks.
The belt will show some small cracks in normal
operation. The belts are not adjustable. Replace
the belts if they begin to slip from wear.
Deck Belt Removal
1. Park on a level surface and apply the parking
brake. Lower the deck to the lowest cutting
position.
2. Remove all belt shielding.
3. Remove the debris that has accumulated
around the cutter housings and the deck
surface.
4. Push inward on the idler arm to release the
tension on the belt.
5. Slip the belt over the top of the cutter housing
pulleys and remove the belt from the deck.
Deck Belt Installation
NOTE: For ease in installing the deck belt, refer to
the routing decal on the top of the deck.
1. Wrap the deck belt around the electric clutch
pulley located on the engine shaft.
2. Route the belt forward and up onto the deck.
3. Place the belt around the idler pulley.
4. Wrap the belt around the stationary idler
pulley and around the mandrel housings.
5. Push inward on the idler arm and carefully
route the belt over the stationary idler pulley.
Once the belt is properly routed, slowly
release the idler arm to tension the belt.
6. Make sure the belt routing matches the deck
decal and that the belt does not have any
twists.
7. Reinstall all belt shielding.