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Section 5: Maintenance & Lubrication
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 5-5 and Figure 5-6 on page 33:
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 a belt onto a pulley as this will cut or damage
the fibers of the belt covering.
Keep oil and grease away from belts, and never use belt
dressings. Any of these will destroy the belt composition
in a very short time.
32
ZST40 & ZST48 Zero Turn Mowers 357-505M
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Deck Drive Belt Installation
Refer to Figure 5-5 or Figure 5-6 on page 33:
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 floor platform.
5. Pull hitch pin (#8).
6. Release deck belt tension with by placing a socket
wrench with a 3/4" socket on the over-center-release
bolt (#9) and turning counterclockwise. This will
relieve the tension on the tension idler spring (#11).
7.
Pull tension idler (#6) away from the belt to provide
maximum belt clearance.
8. Remove existing deck drive belt (#3).
9. Route new deck drive belt (#3) per the illustration
shown in Figure 5-5.
10. Re-tension idler (#6) by turning bolt (#9) clockwise
until over-center-release locks in place. Check belt
tension per the "Deck Drive Belt Tensioning" on
page 24.
11. Re-install hitch pin (#8).
12. Re-install deck belt covers and floor platform.
12/15/15
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