Toro Workman HDX Auto Service Manual page 43

20.If necessary, remove hydraulic pump coupler as-
sembly from engine flywheel (Fig. 26):
A. Remove cap screws and flat washers that secure
rubber coupler to pump coupler adapter attached to
flywheel. Remove coupler and pump hub assembly.
B. Remove cap screws and flange nuts that secure
pump hub to rubber coupler.
C. If necessary, remove socket head screws that se-
cure pump coupler adapter to flywheel and remove
adapter.
Engine Installation (Fig. 21)
1. Make sure that all parts removed from the engine
during maintenance or rebuilding are installed to the en-
gine.
2. If removed, install hydraulic pump coupler assembly
to engine flywheel (Fig. 26):
A. If pump coupler adapter was removed from fly-
wheel, apply medium strength thread locker to sock-
et head screws and secure adapter to flywheel with
screws.
B. Secure pump hub to rubber coupler with two (2)
cap screws and flange nuts. Make sure that nuts are
located at pump hub.
C. Apply medium strength thread locker to cap
screws that retain rubber coupler to pump coupler
adapter on flywheel. Secure rubber coupler and
pump hub assembly to pump coupler with two (2) cap
screws and flat washers.
3. If removed, secure pump mount to engine:
A. Position pump mount to engine and loosely install
two (2) flange head screws into engine base.
B. Secure sensor mount and pump mount to engine
with two (2) screws (Fig. 25). Then, fully tighten
flange head screws to secure pump mount to engine
base.
C. Make sure that all electrical components are se-
cured to pump mount and then connect engine wire
harness connectors to all components (Fig. 25).
D. Secure oil filter adapter to pump mount.
4. If removed, secure air inlet housing to engine (Fig.
24).
IMPORTANT: Make sure to not damage the engine,
fuel hose, hydraulic lines, electrical harness, engine
coolant pipes, spanner plate or other parts while in-
stalling the engine.
Workman HDX Auto
5. Use lift or hoist to carefully install engine to the chas-
sis. One person should operate hoist and a second per-
son should help guide engine to the machine. Lower
engine and move it toward the front of the machine to al-
low engine crankshaft to clear spanner plate that is at-
tached to the transmission.
6. Locate engine to engine mount with four (4) flange
nuts and flange head screws. Make sure that negative
battery cable, wire harness ground connection and lock
washer are installed with the left, front engine fastener.
Leave engine fasteners loose.
IMPORTANT: As the screws used to secure the
spanner plate to the air inlet housing are tightened,
move engine assembly to the spanner plate so that
engine and transmission alignment can be accu-
rate. Be careful to prevent spanner plate distortion
as screws are tightened.
7. While moving the engine toward the spanner plate to
prevent distortion of the spanner plate, secure spanner
plate to air inlet housing with five (5) washer head
screws (Fig. 24). Do not install screws in the two (2)
holes closest to the air intake end of the spanner plate.
These holes will be used to secure the CVT enclosure
cover.
8. Secure the engine in place by fully tightening the
flange nuts and flange head screws.
9. Connect accelerator cable ball joint to throttle bell-
crank on engine (Fig. 22). Secure cable to throttle brack-
et with jam nuts.
10.Connect wire harness connectors to all engine and
engine accessories.
11. Connect fuel supply hose to fuel fitting on engine and
secure with hose clamp.
6
7
2
1
1. Cap screw
2. Flat washer
3. Pump coupler adapter
4. Engine flywheel
5. Set screw (2)
Page 3 − 23
4
3
9
8
5
Figure 26
6. Screw and flange nut
7. Pump hub
8. Rubber coupler
9. Socket head screw
Kohler Gasoline Engine