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Section 5: Maintenance & Lubrication
ZT60i & ZT72i (S/N 748110+) Accu-Z
®
Zero Turn Mowers 357-552M
Table of Contents
2/06/14
Belt Maintenance
!
DANGER
Before raising floor pan or removing pulley guards, make
certain blade engagement switch has been shut off, deck has
been properly blocked up, engine has been shut off, and switch
key has been removed for maximum safety. Replace all guards
and floor pan before putting mower back into service. Repairs
or maintenance requiring engine power should be performed
by trained personnel only.
Refer to Figure 5-6:
Replace belts that show signs of severe cuts, tears,
excessive weather checking, and cracking or burns
caused by slipping. Slight raveling of belt covering does
not indicate belt damage. Trim ravelings with a sharp
knife.
Inspect belt pulley grooves and flanges for wear. A new
belt or one in good condition, should never run against
the bottom of the groove. Replace pulley when this is the
case, otherwise belt will lose power and slip excessively.
Never pry belt onto a pulley as this will cut or damage
fibers in the belt covering.
Keep oil and grease away from belts, and never use belt
dressings. Any of these will destroy belt composition in a
very short time.
Deck Drive Belt Removal & Installation
Refer to Figure 5-6:
1. Park mower on a flat surface.
2. Make sure blade engagement switch is (OFF),
control levers are fully (OUT), park brake is (ON) and
engine switch key is (OFF) and removed.
3. Place deck height in the lowest position.
4. Remove deck belt covers and raise floor platform.
5. Pull hitch pin (#2).
6. Release deck belt tension by placing a socket
wrench with a 3/4" socket on the over-center-release
latch (#3) and turning counterclockwise. This will
relieve tension on idler extension spring (#5).
7. Pull belt tension idler arm (#6) away from deck drive
belt (#11) to provide maximum belt clearance and
remove belt from spring tensioned idler (#8).
8. Remove existing belt (#11) from drive pulley (#14).
9. Remove existing belt (#11) from all remaining deck
pulleys.
10. Install new belt (#11) in reverse order the belt was
removed using belt routing shown in Figure 5-6.
11. Re-tension idler pulley (#8) by turning the over-
center-release latch (#3) clockwise until over-center-
release locks in place. Check belt tension per “Deck
Drive Belt Tensioning” on page 28.
12. Re-install hitch pin (#2).
13. Re-install deck belt covers and lower floor platform.
Deck Drive Belt Layout
Figure 5-6
1. Spring eyebolt bracket
2. Hitch Pin
3. Over-center latch
(Use 3/4" socket wrench)
4. Eyebolt
5. Idler extension spring
6. Belt tension Idler arm
7. Blade spindle drive pulleys
8. Idler pulleys
9. Ground drive pulley
10. 1/4" x 1/4" Key
11. Deck drive belt
12. Clutch Locking Bracket
13. Clutch bolt
14. Deck drive pulley with 12V
Electric Clutch (Engages
pulley #2)
15. Lock Washer
16. Thick Washer
17. Latch (Secures pulley
guards)
33781