Sears 917.258670 Owner's Manual page 51

REPAIR PARTS
TRACTOR - - MODEL NUMBER 917.258670
BRIGGS & STRATTON ENGINE - MODEL NUMBER 421=707, TYPE NUMBER 1631-01
I358 GASKET SET j
[121 C ARBURETO_ KIT
468
_332
Q 7s
188
@ 1006
51A
52
54
337
_635
383
5'I