Installing Engine/Transmission - Toro 500 EFI Service Manual

6. From the left side, install the case half 6 mm cap
screws; then tighten only until snug.

NOTE: Rotate the shafts back and forth to ensure
no binding or sticking occurs.
7. From the right side, install the 6 mm cap screws;
then tighten only until snug.

NOTE: Rotate the shafts back and forth to ensure
no binding or sticking occurs.
8. In a crisscross/case-to-case pattern, tighten the 8 mm
cap screws (from steps 4-5) until the halves are cor-
rectly joined; then tighten to 20 ft-lb.

NOTE: Rotate the shafts back and forth to ensure
no binding or sticking occurs.
9. In a crisscross/case-to-case pattern, tighten the 6 mm
cap screws (from steps 6-7) to 10 ft-lb.

NOTE: Rotate the shafts back and forth to ensure
no binding or sticking occurs.
AT THIS POINT

After completing center crankcase components, pro-
ceed to Installing Right-Side Components, to Installing
Left-Side Components, and to Installing Top-Side Com-
ponents.
Installing Engine/
Transmission

NOTE: Toro recommends new gaskets and O-rings
be installed whenever servicing the vehicle.
1. Using a suitable lifting sling and engine hoist,
lower the engine into the vehicle engaging the
slotted rear engine mount brackets with the engine
mounts; then install the front through-bolt.
2. Tighten the flange nuts on the rear cradle to 25 ft-
lb; then tighten the nut on the front through-bolt to
40 ft-lb.
3. Remove the plugs from the oil cooler lines and
connect to the appropriate fittings. Secure with
hose clamps and tighten securely.
4. Secure the front and rear driveshafts to the engine
flanges with the cap screws and tighten to 20 ft-lb;
then connect the upper and lower coolant hoses and
tighten the clamps securely.
5. Place a new grafoil seal in the cylinder head and a
new grafoil seal on the muffler end of the exhaust
pipe and install the exhaust pipe. Secure with two
exhaust springs and two cap screws tightened to 20
ft-lb.
6. Install the O2 sensor and tighten the sensor to 19
ft-lb. Connect the harness to the sensor.
7. Install the forward exhaust pipe heat shield and
HDX157A
secure with the machine screws. Tighten securely.
HDX156A
HDX153A
HDX154
115