Husqvarna 917.28961 Owner's Manual page 44

BRIGGS ENGINE - MODEL NUMBER 331777, TYPE NUMBER 1372-B1
48 SHORT BLOCK
LIQUID GASKET AND THE BREATHER GASKET ARE INTERCHANGEABLE
121 CARBURETOR OVERHAUL KIT
51
104
105
51A
127
137
98
1095 VALVE GASKET SET
51
1022
7
868
883
28
4
27
12
25
27
26
29
32
758
16
757
146
24
741
TRACTOR - - MODEL NUMBER YTH2042 (289610)
1058 OPERATOR'S MANUAL
634
217
617
633
987
1266
307
1017
15
20
1270
759
43
46
45
1329 REPLACEMENT ENGINE
358 ENGINE GASKET SET
3
12
7
20
9
51
177
524
1
306
22
1027
616
404
614
44
1330 REPAIR MANUAL
1036 EMISSIONS LABEL
868
943
1022
617
691
883 1266
11
584
684
9
2
3
718
1024
847
965
943
750
227
505
562
850
1264
1263
552
691
523
177
525
524