MTD Yard-Man 993 Series Operator's Manual page 12

/En "
Pulley
Figure 18
Bolt
Spring
Brake tt!
Bracket _ uger Control
uelt
Pull,
Auger
Idler
Rod
BrakeJ
Bracket
Assembly
"Z"/
Fiffing
Figure 19
Frame_ssembly
Cable
Roller
--'_Guide
Housing
Re_
Screw
Lock Washer
Figure 20
8. Separate the auger housing from the frame
assembly by tilting the housing forward and
pulling up the handles.
9. Using a 1/2" wrench remove the hex screw and
belleville washer from the centre of the pulley on
the auger housing. Lift the brake bracket
assembly out of the pulley groove and remove
the pulley. See Figure 21. Be careful not to lose
the key.
10. Remove and replace auger belt inside belt
keepers.
11. Reassemble pulley to auger housing with hex
screw and belleville washer (cupped is toward
the pulley). Be certain key is in place on shaft
and brake puck is seated in the pulley groove.
Figure 21
Proper Adjustment With the auger clutch lever in
the disengaged position the top surface of the new
belt should be even with the outside diameter of the
pulley. To adjust, disconnect ferrule from the brake
bracket assembly and thread ferrule in (towards
idler) to increase tension on belt, out to decrease
tension.
NOTE:
The brake puck must always be firmly
seated in the pulley groove when the auger clutch
lever is in the disengaged position.
Drive Belt
1. Unhook extension spring from the belt cover
plate. See Figure 18.
2. Remove drive belt from the engine pulley and
bottom drive pulley.
3. Replace belt and reassemble in reverse order.
4. Reassemble the two halves of the unit hooking
the lower portion of the auger housing over the
stationary shoulder bolts in the frame assembly.
5. Secure the two halves with the two screws and
lock washers
6. Attach the "Z" fitting of the cable into the brake
bracket assembly. See Figure 19.
7. Slip the auger control belt over engine pulley.
8. Insert ferrule on auger idler rod into bracket
assembly and secure with flat washer and cotter
pin.
9. Reassemble the large shoulder bolt and lock
washer as shown in Figure 18.
10. Reassemble belt cover and chute directional
control.
11. Remove plastic film from gas cap.
12