Drive system diagram
Part #STD581075
Replaced by #812000029
Drive system diagram
Part #90589
Replaced by #532122075
Drive system diagram
Part #37X65
Replaced by #37X65MA
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Part #3887
Replaced by #3887MA
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Mower housing diagram
Part #37X57
Replaced by #37X57MA
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Five speed transaxle diagram
Part #3943
Replaced by #703058
Wiring system diagram
Part #91275
Replaced by #691959
Part #STD541431
The manufacturer no longer makes this part, and there's no substitute part
Mower housing diagram
Part #91178
Replaced by #420613MA
Drive system diagram
Part #56562
Replaced by #56562MA