Drive system diagram
Part #STD581075
Replaced by #812000029
Pictorial wiring diagram
Part #21064
Replaced by #532365402
Blade housing bottom half diagram
Part #37X57
Replaced by #37X57MA
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Pictorial wiring diagram
Part #91275
Replaced by #691959
Steering system diagram
Part #17X161
Replaced by #703590
Blade housing bottom half diagram
Part #17X155
Replaced by #17X166MA
Pictorial wiring diagram
Part #91032
Replaced by #91032MA
Part #STD523107
The manufacturer no longer makes this part, and there's no substitute part
Blade housing bottom half diagram
Part #15X100
Replaced by #15X100MA
Drive system diagram
Part #17X115Z
Replaced by #17X115MA