Lower half diagram
Part #400162
Replaced by #65139
Part #15X88Z
The manufacturer no longer makes this part, and there's no substitute part
Part #20613
Replaced by #420613MA
Part #15X79
Replaced by #703409
Mower housing diagram
Part #20551
Replaced by #492574MA
Mower housing diagram
Part #15X84
Replaced by #703893
Part #STD533107
Replaced by #STD533107
Top half diagram
Part #STD551025
The manufacturer no longer makes this part, and there's no substitute part
Lower half diagram
Part #133X3
Replaced by #90594MA
Mower housing diagram
Part #2X39
Replaced by #2X39MA