47
Troubleshooting, Adjustment & Repair
9. Reinstall the mower deck guards and tighten the
5/16” hardware to secure in place.
10. Run the mower under no-load condition for
approximately 5 minutes to break in the belt.
Check the Mower Belt Tensioner Spring Length
1. Lower the mower deck to its lowest cutting
position.
Figure 50. Mower Belt Idler Spring Length
A. Mower Belt Tensioner Spring
B. Anchor Eyebolt
C. Jam Nut
D. Adjustment Nut
E. Measurement
Mower Belt Idler Spring Length
inch cm
61” Mower Deck 7 17.8
72” Mower Deck 6-1/4 15.9
A
D
E
B
C
2. Measure the coil length (E, Figure 50) of the
mower belt tensioner spring (A). The measurement
should equal the measurement as indicated in
the chart. If the measurement does not equal the
measurement as indicated in the chart, adjust the
mower belt spring length.
Adjusting the Mower Belt Spring Length
1. Loosen the jam nut (C) on the anchor eyebolt (B).
2. Turn the adjustment nut (D) until the measurement
as indicated in the chart is achieved.
3. Retighten the jam nut.
Figure 49. Mower PTO Belt Routing
A. Spindle Pulley
B. PTO Drive Belt
C. Spring-loaded Idler Pulley
D. Stationary Idler Pulley
B
C
D
A
A
A
D
D
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