Adjusting The Pto-Engagement Linkage - Toro 30672 Operator's Manual

Important:
The belt must be tight enough to
not slip during heavy loads, while cutting grass.
Over-tensioning the belt reduces the life of the
spindle bearing, belt, and idler pulley.
1. Park the machine on a level surface, disengage
the PTO, and engage the parking brake.
2. Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Loosen the locknut on the turnbuckle
41).
4. Adjust the tension of the belt.
•
Rotate the turnbuckle toward the rear of the
machine to increase the tension on the belt.
•
Rotate the turnbuckle toward the front of the
machine to decrease the tension on the belt
(Figure 41).
Note:
The eyebolt threads on both ends of the
turnbuckle should be engaged a minimum of 8
mm (5/16 inch).
5. Engage the PTO and check the belt tension.
Adjust the tension until it is correct.
Note:
The proper mower belt tension is 44 to
67 N∙m (10 to 15 ft-lb) with the belt deflected
13 mm (1/2 inch) halfway between the pulleys
(Figure 41).
Figure 41
1. Mower belt with 13 mm
(1/2 inch) deflection
6. Tighten the locknut on the turnbuckle.
7. Check the blade-brake adjustment; refer to
Adjusting the Blade Brake (page
(Figure
g001476
2. Idler pulley
40).
Adjusting the
PTO-Engagement Linkage
The adjustment for the PTO-engagement linkage is
located beneath the front, left corner of the engine
deck.
1. Park the machine on a level surface, disengage
the PTO, and engage the parking brake.
2. Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Engage PTO.
4. Adjust the linkage length to where the lower
end of the bellcrank just clears the axle-support
gusset (Figure
1. Bellcrank
2. Safety switch located
under the engine deck
3. Bellcrank just clears the
gusset with the PTO
engaged
5. Ensure that the assist arm is against the rear
assist-arm stop on the deck
6. Disengage the PTO.
7. The assist arm should contact the front
assist-arm stop on the deck. If it does not
contact, adjust the bellcrank so that it is closer
to the gusset (Figure
36
42).
Figure 42
4. Yoke
5. Nut
6. Assist-arm link
(Figure 43).
43).
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