Toro Groundsmaster 4500-D Service Manual page 37

Coupler Removal (Fig. 17)
NOTE: The hydraulic pump assembly needs to be re-
moved from engine before coupler can be removed.
1. If engine is in machine, remove hydraulic pump as-
sembly (see Piston (Traction) Pump in the Service and
Repairs section of Chapter 4 -- Hydraulic System).
2. Remove flywheel plate and spring coupler from en-
gine using Figure 17 as a guide.
Coupler Installation (Fig. 17)
1. Position spring coupler to engine flywheel and align
mounting holes. Make sure that coupling hub is away
from engine flywheel (Fig. 18).
2. Secure coupler to flywheel with eight (8) cap screws
and hardened washers. Torque cap screws in a crossing
pattern from 29 to 33 ft- -lb (40 to 44 N- -m).
3. Position flywheel plate to engine. Make sure that
boss on plate is orientated down. Secure flywheel plate
with eight (8) cap screws (item 7) and hardened wash-
ers. Torque cap screws in a crossing pattern from 29 to
33 ft- -lb (40 to 44 N- -m).
4. If engine is in machine, install hydraulic pump as-
sembly (see Piston (Traction) Pump in the Service and
Repairs section of Chapter 4 -- Hydraulic System).
Groundsmaster 4500--D/4700--D
Engine Side
1. Coupler
2. Coupler hub
Page 3 - - 21
Hydraulic
Pump Side
1
2
3
Figure 18
3. Engine flywheel
Yanmar Diesel Engine