Toro 139-5637 Instructions Manual page 4

Figure 2
1. Nut
2. Washer
3. Spacer
2. Perform the following steps to install the coupler
to the engine-output shaft:
A. Apply anti-seize lubricant to the top surface
of the square key and position the key in
the output-shaft keyway.
B. Slide the coupler onto the output shaft until
it contacts the shaft shoulder.
C. Secure the coupler to the output shaft with
the 2 previously-removed set screws.
D. Torque the set screws to 7 N∙m (65 in-lb).
3. Perform the following steps to install the engine
base assembly to the machine:
A. Ensure that the coupler sleeve is placed on
the transmission-input-shaft coupler.
B. Position the engine-base assembly to the
machine.
C. Carefully slide the engine-base assembly
toward the transmission, allowing the
engine coupler to be inserted into the
transmission coupler sleeve.
Note:
You may have to turn the engine
output shaft to align the engine coupler with
the coupler sleeve.
D. Support the engine-base assembly to allow
for fastener installation.
E. Install and finger-tighten the 2 cap screws,
hardened washers, and flange nuts that
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4. Engine base
5. Bolt
secure the engine-base rear to the rear
frame.
F. Align the frame hole with the front mounting
boss of the engine base.
G. Install and finger tighten the flange head
screw and hardened washer that secures
the engine base to the frame.
H. Position the engine-base front to align the
engine and transmission couplers. Fully
tighten the flange-head screws to secure
the engine-base front.
I. Fully tighten fasteners at rear of engine
base.
4. Connect the wire harness to the appropriate
locations on the engine and the handle:
•
Engine connections:
– Connect the ground wire (terminal ring)
to engine with an existing nut under the
fuel tank
1. Ground wire
– Refer to the following table for the
appropriate machine and engine wire
harness connections:
Machine-wire-harness
connector
Black
Grey
Green
•
Handle connections: Connect the wire
harness to the engine switch, hour meter,
interlock module, and the light kit connections
(if equipped).
4
(Figure 3).
Figure 3
2. Nut
Engine-wire-harness
connector
Red
Black
Blue
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