Ariens 939 SNO-THRO 939001 - Manual (Page 15)

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Auger Shaft
To grease auger shaft, remove shear bolt nuts and
shear bolts. Apply grease at the grease zerks and then
rotate the auger shaft. Replace shear bolts per
instructions in
“Shear Bolts” on page 17.
4.8 ATTACHMENT DRIVE BELT
REPLACEMENT
Remove Attachment Drive Belt
(Figures 7 and 8)
1. Shut off engine, remove key, disconnect spark plug
wire and allow unit to cool completely.
2. Remove two screws securing belt cover to unit and
remove belt cover.
3. Remove belt fingers by removing cap screws
mounting belt fingers to engine (Figure 8).
IMPORTANT: To avoid bending bottom cover, remove
the cover before separating the blower housing from
the unit.
4. Support Sno-Thro frame and housing.
5. Remove top two cap screws and loosen lower two
cap screws holding blower housing to frame (one
on each side).
6. Remove attachment drive belt from engine sheave
(it may be necessary to turn engine sheave using
recoil starter handle).
7. Separate housing from unit. Lower handlebar to
floor.
8. Remove attachment drive belt from lower pulley.
CAUTION: Always support Sno-Thro frame
and housing when loosening the cap screws
holding them together. Never loosen cap
screws while unit is in service position.
OS1374
Grease Oil
Figure 6 Figure 7
1. Blower Housing
2. Belt Cover
3. Frame 4. Belt Cover Screw
5. Housing Bolt Holes
OS7400
1
2
3
4
5
Figure 8
1. Attachment Drive Belt
2. Engine Sheave
3. Traction Drive Belt
4. Attachment Idler Nut
5. Attachment Belt Idler
6. Belt Finger
1 2 3
4
5
6
6
OS7410