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Maintenance
B
C
D
E
A
Figure 50. Mower Belt Idler Spring Length
A. Mower Belt Tensioner Spring
B. Measurment
C. Jam Nut
D. Adjustment Nut
Figure 51. Deck Lift Assist Spring Location
A. Deck Lift Assist Spring
A
A
Checking / Adjusting the Mower Belt Idler
Tensioning Spring Length - All Models
Mower Deck Belt Tensioning Spring Length
Deck
Size
Serial Number Measurement
61” 2016953545 & Below 7-1/4” ± 1/8” (18,42
cm ± 0,13 cm)
61” 2016953546 & Above 12-1/2” (32 cm)
72” 2016950122 & Below 6-3/4” ± 1/4” (16,2
cm ± 0,64 cm)
72” 2016950123 & Above 12-1/2” (32 cm)
1. Set the mower deck to the 3-1/2” (8,9 cm) cutting
position.
2. Use the Mower Deck Belt Tensioning Spring
Length chart to determine the correct spring length
for your unit.
3. Measure the coil length (A, Figure 50) of the mower
belt idler tensioner spring (B). The measurement
should equal the measurement as indicated in the
chart. If not, continue with step #4.
4. Loosen the jam nut (C) on the eye bolt (D).
5. Turn the adjustment nut (E) until the correct
measurement as indicated in the chart is achieved.
6. Re-tighten the jam nut.
7. Re-install the mower deck guards.
8. Run the mower under no-load condition for about 5
minutes to break-in the new belt.
Deck Lift Assist Springs
The deck lift assist springs (A, Figure 51) are factory
set to provide optimal lifting performance.
Although they are fastened with an adjustable anchor,
this is not an adjustment point.
Do NOT attempt to adjust the spring length or lifting
performance will be compromised.
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