MTD Yard-Man 203b, Operator'S Manual

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8. Tip the unit backwards so that it rest on the
handles.
9. Remove the lower belt guard by removing the
two self-tapping screws. See Figure 17.
Figure 17
10. Remove the safety switch from the front of the
outer housing by removing the two self-tapping
screws. See Figure 17.
11. Remove the two hex bolts and hex lock nuts
which extend through the housing. Lift the flail
screen out of the housing. See Figure 13.
12. Remove the outer housing and housing blades
by removing the fourteen self-tapping screws.
13. Remove the hex bolt, lock washer and flat
washer that secures the impeller assembly to
the crankshaft. See Figure 18.
Figure 18
14. Thread the special impeller tool (see note on
previous page) into the crankshaft. Stop when
the impeller assembly can move on the
crankshaft.
15. If the old belt is still on the unit, cut belt and
remove.
16. Remove the impeller assembly from the
crankshaft. Unthread the special impeller tool
from the impeller assembly.
17. Remove the inner housing and mounting
adapter by removing the five hex bolts and two
hex nuts. See Figure 19.
Figure 19
18. Insert the new belt between the frame and
transmission pulley. It may be necessary to use
a screwdriver to pry the frame away from the
pulley in order to insert the belt. Apply a slight
upward pressure, being careful not to damage
the pulley. Place belt around transmission
pulley. See Figure 20.
Figure 20
Safety
Switch
Self-Tapping
Screws
Self-Tapping
Screws
Lower Belt
Guard
Hex Bolt,
Lock Washer and
Flat Washer
Impeller
Assembly
Hex Bolts
Hex Bolts and Nuts
Mounting
Adapter
Hole
Belt Guard
Spring
Idler
Frame
Idler
Bracket
Transmission
Pulley