Toro 22317 Service Manual page 87

ALL UNITS/GENERAL
7. Remove, inspect and then discard the 8 spool
o-rings (4 on top, 4 on bottom) (Fig. 0233).
8. Remove the 3 check valves (Fig. 0234).
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IMG-0286a
Fig. 0233
IMG-0294a
Fig. 0234
9. Replace the check valve o-ring on all 3 check valves
(Fig. 0235).
10. Install the 3 check valves (Fig. 0236).
Toro Wheeled CUL Service Manual
IMG-0297a
Fig. 0235
IMG-0298a
Fig. 0236