Alternator Belt Tension; Belt Guide Adjustment; Parking Brake Adjustment - Exmark LAZER Z DS-SERIES Operator's Manual

Maintenance
Figure 19
1. Front of unit
Figure 20
1. Spring idler pulley
2. Front of unit

Alternator Belt Tension

Stop engine, wait for all moving parts to stop and
remove key. Engage parking brake.
Tilt seat and remove air deflector panel
To tighten alternator belt, loosen both upper and
lower alternator mounting bolts. Rotate alternator
out, away from engine and retighten hardware to
secure in place.
When properly tensioned, the alternator belt will
deflect 1/4 to 3/8 inch (7-9 mm) while applying 22
pounds of force to the belt midway between fan and
alternator.
2. Alignment holes
3. Right side idler pulley
(adjustable)

Belt Guide Adjustment

1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Remove the belt shield on the right side of mower
deck.
3. Note belt guide bolted to deck near the shield
support stud and right-hand pulley. Guide should
be 1/8 inch (3.2 mm) away from the belt, with
bolt-end of guide near end of slot (Figure 21).
4. If adjustment is necessary, loosen the bolt securing
the belt guide and make proper adjustment.
Tighten hardware.
1. End of slot

Parking Brake Adjustment

Service Interval: After the first 100 hours
Check to make sure brake is adjusted properly. This
procedure must be followed after the first 100 hours
or when a brake component has been removed or
replaced.
1. Drive the machine onto a level surface.
2. Disengage the blade control switch (PTO), move
the motion control levers to the neutral locked
position and set the parking brake.
3. Stop the engine, wait for all moving parts to stop,
and remove the key.
4. Raise the back of the machine up and support the
machine with jack stands.
42
Figure 21
2. Belt guide
Every 500 hours thereafter