Greensmaster Flex 21 Page 3 – 13 Engine
Engine Removal
1. Make sure machine is parked on a level surface with
the engine OFF. Remove high tension lead from the
spark plug to prevent the engine from starting. Close
fuel shut–off valve.
2. If engine is to be disassembled, it may be easier to
drain oil from engine before removing engine from trac-
tion unit.
3. Drain oil from transmission.
4. Remove throttle cable from engine:
A. Loosen screw on governor lever enough to slide
the throttle cable out of the nut (Fig. 14).
5. Disconnect electrical connections from engine (Fig.
15):
A. Unplug wiring harness from interlock module.
B. Disconnect engine stop switch and armature
wires from wiring harness.
C. Disconnect ground wire from engine by removing
cap screw and lock washer.
6. Remove engine from the engine base (Fig. 16):
A. Remove four flange nuts that secure gearbox as-
sembly to setscrews on engine crankcase cover
flange.
B. Support gearbox between mower frame and
gearbox flange.
C. Remove cap screws, flat washers, and flange
nuts that secure engine to engine base of traction
unit.
D. Carefully slide engine away from gearbox as-
sembly to allow engine gear to clear gearbox. Re-
move and discard flange gasket.
E. Remove the engine from the traction unit.
Figure 14
1. Governor lever
2. Throttle cable
3. Throttle cable screw
4. Throttle cable nut
1
3
2
4
Figure 15
1. Wire harness
2. Interlock module
3. Stop switch wire
4. Armature wire
5. Cap screw/lock washer
2
1
2
3
5
4
Figure 16
1. Gearbox flange nuts 2. Engine mounting screws
2
1
Engine
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