Toro Multi Pro 1750 Service Manual page 42

4. If removed, install drive sprocket components, rub-
ber coupling, and hydraulic pump hub as follows:
A. Install sprocket spacer on engine shaft.
B. Position woodruff key on engine shaft. Apply anti
seize lubricant to shaft and key, then fit drive sprock-
et on engine shaft.
C. Place two (2) button head screws (item 14) in po-
sition in sprocket adapter (item 16). Install sprocket
adapter and lock nut on engine shaft. Make sure
sprocket adapter is fully engaged with sprocket and
tighten lock nut from 100 to 130 ft−lb (136 to 176
N−m).
D. Place two (2) button head screws (item 14) in rub-
ber coupler (item 13). Position rubber coupler over
screws in sprocket adapter and install flange nuts.
Tighten flange nuts from 15 to 20 ft−lb (20 to 27
N−m).
E. Place pump hub over screws in rubber coupler
and install flange nuts. Tighten flange nuts from 15 to
20 ft−lb (20 to 27 N−m)
Engine and clutch assembly weighs approxi-
mately 175 lbs (79 kg). Use an appropriate lifting
device to safely lift the engine assembly.
5. Carefully lift engine onto the engine and pump
mounting plate and secure with four (4) flange head
screws and flange nuts. Tighten fasteners from 27 to 33
ft−lb (37 to 44 N−m).
Kohler Gasoline Engine
CAUTION
6. Install drive belt over sprockets and under idler pul-
ley. Adjust drive belt tension (see Adjust Spray Pump
Drive Belt in Chapter 6 − Spray System in this manual).
7. Position key into hydraulic pump shaft and apply an-
tiseize lubricant to pump shaft and key. Align pump shaft
with hub and install pump to mounting plate with fasten-
ers shown. Tighten pump mounting fasteners from 27 to
33 ft−lb (37 to 44 N−m). Tighten two (2) pump hub set
screws from 90 to 110 in−lb (10 to 12 N−m).
8. Install engine and pump mounting plate assembly to
machine (see Engine and Pump Mounting Plate As-
sembly in this chapter).
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