Drive system diagram
Part #STD581075
Replaced by #812000029
Mower deck diagram
Part #37X50
Replaced by #37X57MA
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Steering system diagram
Part #90599
Replaced by #092303601MA
Part #20613
Replaced by #420613MA
Drive system diagram
Part #165X43
Replaced by #165X43MA
Steering system diagram
Part #55041
Replaced by #56236E701MA
Mower deck diagram
Part #28X23
Replaced by #703948
Part #24273
Replaced by #5021451SM
Idler assembly diagram
Part #17X36Z
The manufacturer no longer makes this part, and there's no substitute part
Steering system diagram
Part #6X73Z
Replaced by #1X98MA