MTD 500 series Shop Manual page 58

Medium Frame 2 & 3 Stage Snow Throwers
5. Remove the four screws that hold the bottom
access panel in place using a 3/8" wrench.
6. Slide the panel out from under the top of the frame.
7. Rotate the panel until it is perpendicular to the frame
and slide it out of the slot in the frame. See Figure
6.3.
8. Remove the nuts from the tensioning J-bolts using a
1/2" wrench. See Figure 6.4.
NOTE: The J-bolts will fall out when the Rear Wheel
retaining nuts are removed.
9. Remove the retaining nut from both Rear Wheels
using a 3/4" wrench. See Figure 6.5.
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Figure 6.3
Tensioning J-bolts
Figure 6.4
Retaining nut
Figure 6.5