Pto Drive Belt Replacement - Snapper 5900859 Operator's Manual

Regular Maintenance

PTO Drive Belt Replacement

NOTICE
To avoid damaging belts, DO NOT pry belts over
pulleys.
1. Park the unit on a smooth, level surface such as
a concrete floor. Disengage the PTO, engage the
parking brake, turn off the engine, and remove the
ignition key.
2. Remove the mower deck guard.
3. Position the mower deck in the TRANSPORT
position.
WARNING
Use extreme caution when rotating the idler
arm with the breaker bar, due to the increased
tension in the spring as the idler arm is being
rotated. Injury may result if the breaker bar is
prematurely released while the spring is under
tension.
4. Using a 1/2" breaker bar, place the square end in
the square hole located in the end of the idler arm
(A, Figure 42). Carefully rotate the breaker bar
CLOCKWISE, which will relieve the tension on the
belt exerted from the idler arm.
5. Slide the PTO drive belt over the edge of the left
spindle pulley (B). Carefully release the tension
on the breaker bar.
6. Remove the old belt and replace with a new one.
Make sure the V-side of the belt runs in the pulley
grooves.
7. Install the PTO drive belt (A, Figure 43) on the
PTO clutch pulley (B), the front idler pulley (C)
and the idler arm pulley (D). Carefully rotate the
breaker bar CLOCKWISE and install the belt on
the left spindle pulley (E). Carefully release the
tension on the breaker bar.
8. Reinstall the mower deck guard.
9. Run the mower under no-load condition for about
5 minutes to break-in the new belt.
Checking the PTO Drive Belt Idler Tensioner
Spring Length
1. Set the mower deck at its middle cutting height.
2. Measure the coil to coil length of the PTO drive
belt tensioner spring (A, Figure 44). It should
measure 7-1/4" (18.42 cm). If it does not, perform
the Adjusting the PTO Drive Belt Idler Tensioner
Spring Length.
36
C
A
Figure 42. Removing the PTO Drive Belt
A. Idler Arm
B. Left Spindle Pulley
C. PTO Drive Belt
A
C
D
Figure 43. PTO Drive Belt Routing
A. PTO Drive Belt
B. PTO Clutch Pulley
C. Front Idler Pulley
D. Idler Arm Pulley
E. Left Spindle Pulley
7-1/4"
(18.42 cm)
A
C
B
D
Figure 44. PTO Drive Belt Idler Tensioner Spring
A. PTO Drive Belt Idler Tensioner Spring Length
B. Jam Nut
C. Eyebolt
D. Adjustment Nut
B
B
E
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