Belt Tension Adjustment
IMPORTANT: After first ten hours of operation, check
new belts for proper tension; thereafter, check tension
every 50 hours.
5
3
2
Front Cutting Unit (S/N below 220000000)
Note: Belts for wing unit spindles are tensioned by
springloadedidlersandnormallydonotrequiretension-
ing.
1.
Position machine onlevel surface, lower cutting unit
to shop floor, engage parking brake, shut engine off and
remove key from ignition switch.
4
2.
3.
Remove deck covers.
1
Note position of shoulder bolts in slots in tension
plate. Optimum belt tension will be maintained when the
flanges on the shoulder bolts are 1/8 in. (3 mm) from the
pulley ends of the slots (Fig. 9A). If the shoulder bolt
flanges are more than 3/8 in. (9 mm) from the pulley end
of the slots, an adjustment should be made.
Figure 8
Compression Spring and Tension Plate
Wing Unit Drive Belt
3. Gearbox Plate
Center Drive Belt
Lift Arm
1.
2.
4.
5.
4.
To adjust, loosen jam nuts (Fig. 9B) and extend ten-
sion arm until the shoulder bolt flanges are within 1/8 in.
mm) of the pulley end of the slots (Fig. 9A).
2
(3
Note: When theshoulder bolt flanges are positioned 1/8
in. (3 mm) from the pulley end of the slots, the length of
the compression spring (Fig. 8) will be approximately 5
in. (127 mm).
5.
covers.
Tighten jam nuts to secure adjustment. Install deck
1/8 in.
(3 mm)
1
Front Cutting Unit (S/N 220000001 and above) (Fig.
9C)
Figure 9A
1.
Position machine onlevel surface, lower cutting unit
1. Tension Plate
2. Shoulder Bolts
to shop floor, engage parking brake, stop engine and re-
move key from ignition switch.
2.
3.
Remove deck covers.
Loosen jam nut and relieve tension on springs with
tensioner bolt.
4.
motor mount.
Loosen four (4) cap screws securing slide plate to
2
2
5.
Tighten tensioner bolt until springs are compressed
to dimension shown in Figure 9C.
1
6.
7.
Tighten jam nut to secure adjustment.
Tighten four (4) cap screws securing slide plate to
motor mount.
8.
Install deck covers.
Figure 9B
1.
Tension Arm
2. Jam Nuts
Adjustments
Groundsmaster 580--D
Page 7 -- 6 Rev. E
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Tags | Toro Groundsmaster 30581, Toro Groundsmaster 580 D |
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| Document Type | Service Manual |
| Language | English |
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