Plate 1

ENGINE AND GEARBOX


125c.c and 150c.c 90-714 Cylinder head 21-5103 Cylinder barrel stud nut 2-923 Cylinder barrel stud washer 66-102 Sparking plug washer 65-114 Sparking plug 65-1776 Sparking plug suppressor 90-800 Cylinder head gasket 90-820 Cylinder barrel (standard) 90-736 Cylinder base gasket 90-9 Compression ring 90-337 Piston complete with rings, pegs, gudgeon pin and circlips 90-84 Gudgeon pin 90-85 Gudgeon pin circlip 90-130 Connecting rod bush (small end) 90-784 Connecting rod, crankpin, rollers and thrust washer 90-109 Crankcase dowel 90-111 Cylinder barrel stud 90-284 Crankshaft oil seal 89-3023 Crankshaft bearing (o/s) 90-742 Crankcase with fixed fittings (o/s) 90-117 Primary chain cover gasket 90-112 Dipstick complete 2-2894 Dipstick washer (fibre) 90-10 Crankshaft bearing (o/s) 90-139 Primary chain cover with bushes and dowels 90-124 Primary chain cover screw (long) 65-3062 Primary chain cover screw 90-268 Gear change lever 89-3208 Gear change lever rubber 90-802 Kickstart lever 90-135 Kickstart lever rubber 21-5406 Kickstart and gearchange lever bolt 2-2580 Kickstart and gearchange lever washer 21-5102 Kickstart and gearchange lever nut 90-125 Primary chain cover screw (short) 90-262 Primary chain cover and drain plug washer 65-3427 Folding kickstarter pedal only 2-220 Kickstarter pedal spring bolt 29-541 Kickstarter pedal spring bolt washer 65-3428 Folding kickstarter pedal spring 90-348 Folding kickstarter crank only 66-4707 Folding kickstarter pedal bolt washer 29-5156 Folding kickstarter pedal bolt 90-368 Clutch cover screw 29-3319 Clutch cover screw washer (shakeproof) 90-336 Clutch cover 90-27 Clutch casing snap ring 90-341 Clutch spring cup plate complete 90-30 Clutch spring cup 90-29 Clutch spring 90-32 Clutch actuating plate complete 90-34 Clutch driving plate complete 90-37 Clutch driven plate 90-241 Gear selector arm ball 90-46 Gear selector arm spring 90-47 Gear selector arm spring socket 2-2894 Drain plug fibre washer 90-115 Drain plug 90-75 Gearbox mainshaft bearing circlip 90-11 Gearbox mainshaft bearing 90-56 Gear selector arm bracket complete 90-63 Selector arm bracket screw lock washer 90-62 Selector arm bracket screw 90-782 Flywheel complete with shaft (o/s) 90-499 Big end thrust washer 90-596 Flywheel complete with shaft (n/s) 90-748 Flywheel side plate 90-12 Gearbox pinion sleeve bearing 89-149 Flywheel magneto key 90-246 Flywheel magneto cam key 90-750 Oil drag fan 90-152 Crankshaft shim 24-4217 Crankshaft bearing (n/s) 90-346 Crankcase fixing screw washer (spring) 65-2158 Crankcase fixing screw (short) 90-3024 Exhaust pipe 90-265 Exhaust pipe union nut 90-3002 Exhaust pipe union nut washer 90-248 Crankcase cover fixing screw (short) 90-831 Crankcase cover (nearside) complete 90-110 Crankcase dowel 90-147 Crankshaft oil seal (n/s) 90-798 Crankshaft oil seal retaining circlip (n/s) 90-743 Crankcase with fixed fittings (n/s) 15-5290 Crankcase cover grease nipple (n/s) 90-122 Clutch operating lever spring 90-108 Crankcase dowel bush 90-184 Clutch operating lever bush 90-261 Crankcase drain plug 90-180 Clutch operating lever complete 90-125 Crankcase fixing screw (long) 90-272 Mainshaft bearing thrust plate gasket 90-133 Mainshaft bearing thrust plate 90-73 Mainshaft oil seal housing gasket 89-3006 Mainshaft oil seal 90-72 Mainshaft oil seal housing 90-71 Gearbox sprocket distance sleeve 90-68 Gearbox sprocket 90-70 Gearbox sprocket lock washer 90-172 Gearbox sprocket nut 90-125 Crankcase cover screw (n/s) 90-106 Clutch operating lever cap 90-105 Clutch adjusting screw 89-366 Clutch adjusting screw lock nut 19-239 Flywheel only 90-260 Flywheel magneto fixing nut washer 90-259 Flywheel magneto fixing nut 90-257 Flywheel magneto cam washer (plain) 90-258 Flywheel magneto cam washer (spring) 90-256 Flywheel magneto cam screw 19-284 Flywheel generator only (A.C./D.C.) 2-2580 Flywheel magneto fixing screw washer 65-2158 Flywheel magneto fixing screw 90-450 Mainshaft oil seal housing (must be fitted when 90-299 engine sprocket is fitted) 2-498 Mainshaft oil seal housing screw 29-3319 Mainshaft oil seal housing washer 90-67 Mainshaft primary drive gear bush
Plate Ref. Number.ModelsPart No.DescriptionNumber per set
1 125c.c. 90-714 Cylinder head (1954) 1
1 150c.c. 90-731 Cylinder head (1954) 1
1 125c.c., 150c.c. 90-814 Cylinder head (1955/6) 1
2 125c.c., 150c.c. 21-5103 Cylinder barrel stud nut 4
3 125c.c., 150c.c. 2-923 Cylinder barrel stud washer 4
4 125c.c., 150c.c. 66-102 Sparking plug washer 1
5 125c.c., 150c.c. 65-114 Sparking plug 1
6 125c.c., 150c.c. 65-1776 Sparking plug suppressor 1
7 125c.c. 90-800 Cylinder head gasket (1954) 1
7 125c.c. 90-816 Cylinder head gasket (1955/6) 1
7 150c.c. 90-801 Cylinder head gasket 1
8 125c.c. 90-820 Cylinder barrel (standard) (1955/6) 1
8 125c.c. 90-713 Cylinder barrel (standard) (1954) 1
8 150c.c. 90-732 Cylinder barrel (standard) 1
9 125c.c., 150c.c. 90-736 Cylinder base gasket (1955/6) 1
9 125c.c. 90-722 Cylinder base gasket (1954) 1
10 125c.c. 90-9 Compression ring (standard) 2
10 125c.c. 90-278 Compression ring (.020" oversize) 2
10 125c.c. 90-394 Compression ring (.040" oversize) 2
10 150c.c. 90-734 Compression ring (standard) 2
10 150c.c. 90-794 Compression ring (.020" oversize) 2
10 150c.c. 90-865 Compression ring (.040" oversize) 2
11 125c.c. 90-337 Piston complete with rings, pegs, gudgeon pin and circlips (standard) (domed) 1
11 125c.c. 90-338 Piston complete with rings, pegs, gudgeon pin and circlips (.020" oversize) (domed) 1
11 125c.c. 90-388 Piston complete with rings, pegs, gudgeon pin and circlips (.040" oversize) 1
11 150c.c. 90-873 Piston complete with rings, pegs, gudgeon pin and circlips (standard) (1955) 1
11 150c.c. 90-789 Piston complete with rings, pegs, gudgeon pin and circlips (1954) 1
11 150c.c. 90-868 Piston complete with rings, pegs, gudgeon pin and circlips (+.020") (1955) 1
11 150c.c. 90-791 Piston complete with rings, pegs, gudgeon pin and circlips (+.020") (1954) 1
11 150c.c. 90-871 Piston complete with rings, pegs, gudgeon pin and circlips (+.040" oversize) 1
13 125c.c. 90-84 Gudgeon pin 1
13 150c.c. 90-737 Gudgeon pin 1
14 125c.c., 150c.c. 90-85 Gudgeon pin circlip 2
15 125c.c., 150c.c. 90-130 Connecting rod bush (small end) 1
16 125c.c., 150c.c. 90-784 Connecting rod, crankpin, rollers and thrust washer (standard) 1
16 125c.c. 90-601 Connecting rod, crankpin, rollers and thrust washer (1954) 1
17 125c.c., 150c.c. 90-109 Crankcase dowel 2
18 125c.c., 150c.c. 90-111 Cylinder barrel stud 4
19 125c.c. 90-284 Crankshaft oil seal (1954) 1
19 125c.c., 150c.c. 90-749 Crankshaft oil seal (o/s) 1
125c.c. 90-243 Crankshaft distance collar (1954) 1
20 125c.c., 150c.c. 89-3023 Crankshaft bearing (o/s) 1
21 125c.c. *90-742 Crankcase with fixed fittings (o/s) (1954) 1
21 150c.c. *90-778 Crankcase with fixed fittings (o/s) (1954) 1
21 125c.c., 150c.c. *90-827 Crankcase with fixed fittings (o/s) (1955) 1
22 125c.c., 150c.c. 90-117 Primary chain cover gasket 1
23 125c.c., 150c.c. 90-112 Dipstick complete 1
24 125c.c., 150c.c. 2-2894 Dipstick washer (fibre) 1
25 125c.c., 150c.c. 90-10 Crankshaft bearing (o/s) 1
26 125c.c., 150c.c. 90-139 Primary chain cover with bushes and dowels 1
27 125c.c., 150c.c. 90-124 Primary chain cover screw (long) 2
28 125c.c., 150c.c. 65-3062 Primary chain cover screw 2
29 125c.c., 150c.c. 90-268 Gear change lever 1
30 125c.c., 150c.c. 89-3208 Gear change lever rubber 1
31 125c.c., 150c.c. 90-802 Kickstart lever (rigid and spring frame) 1
31 150c.c. 90-966 Kickstart lever (swinging arm models) 1
32 125c.c., 150c.c. 90-135 Kickstart lever rubber 1
33 125c.c., 150c.c. 21-5406 Kickstart and gearchange lever bolt 2
34 125c.c., 150c.c. 2-2580 Kickstart and gearchange lever washer 2
35 125c.c., 150c.c. 21-5102 Kickstart and gearchange lever nut 2
36 125c.c., 150c.c. 90-125 Primary chain cover screw (short) 1
37 125c.c., 150c.c. 90-262 Primary chain cover and drain plug washer 7
125c.c., 150c.c. competition 90-347 Folding kickstarter pedal assembled complete 1
38 125c.c., 150c.c. competition 65-3427 Folding kickstarter pedal only 1
39 125c.c., 150c.c. competition 2-220 Kickstarter pedal spring bolt 1
40 125c.c., 150c.c. competition 29-541 Kickstarter pedal spring bolt washer 1
41 125c.c., 150c.c. competition 65-3428 Folding kickstarter pedal spring 1
42 125c.c., 150c.c. competition 90-348 Folding kickstarter crank only 1
43 125c.c., 150c.c. competition 66-4707 Folding kickstarter pedal bolt washer 1
44 125c.c., 150c.c. competition 29-5156 Folding kickstarter pedal bolt 1
45 125c.c., 150c.c. 90-368 Clutch cover screw 3
46 125c.c., 150c.c. 29-3319 Clutch cover screw washer (shakeproof) 3
47 125c.c., 150c.c. 90-336 Clutch cover 1
48 125c.c., 150c.c. 90-27 Clutch casing snap ring 1
49 125c.c., 150c.c. 90-341 Clutch spring cup plate complete 1
50 125c.c., 150c.c. 90-30 Clutch spring cup 6
51 125c.c., 150c.c. 90-29 Clutch spring 6
52 125c.c., 150c.c. 90-32 Clutch actuating plate complete 1
53 125c.c., 150c.c. 90-34 Clutch driving plate complete 3
54 125c.c., 150c.c. 90-37 Clutch driven plate 2
55 125c.c., 150c.c. 90-241 Gear selector arm ball 1
56 125c.c., 150c.c. 90-46 Gear selector arm spring 1
57 125c.c., 150c.c. 90-47 Gear selector arm spring socket 1
58 125c.c., 150c.c. 2-2894 Drain plug fibre washer 1
59 125c.c., 150c.c. 90-115 Drain plug 1
60 125c.c., 150c.c. 90-75 Gearbox mainshaft bearing circlip 1
61 125c.c., 150c.c. 90-11 Gearbox mainshaft bearing 1
62 125c.c., 150c.c. 90-56 Gear selector arm bracket complete 1
63 125c.c., 150c.c. 90-63 Selector arm bracket screw lock washer 2
64 125c.c., 150c.c. 90-62 Selector arm bracket screw 2
125c.c., 150c.c. 90-823 Flywheel and connecting rod assembly 1
125c.c. 90-595 Flywheel and connecting rod assembly (1954) 1
150c.c. 90-781 Flywheel and connecting rod assembly (1954) 1
65 125c.c., 150c.c. 90-782 Flywheel complete with shaft (o/s) 1
65 125c.c. 90-597 Flywheel complete with shaft (1954) 1
66 125c.c., 150c.c. 90-499 Big end thrust washer 2
67 125c.c. 90-596 Flywheel complete with shaft (1954) 1
67 125c.c., 150c.c. 90-822 Flywheel complete with shaft (n/s) 1
67 150c.c. 90-783 Flywheel complete with shaft (1954) 1
68 125c.c., 150c.c. 90-748 Flywheel side plate 2
68 125c.c. 90-171 Flywheel side plate (1954) 2
69 125c.c., 150c.c. 90-12 Gearbox pinion sleeve bearing 1
70 125c.c., 150c.c. 89-149 Flywheel magneto key 1
71 125c.c., 150c.c. 90-246 Flywheel magneto cam key 1
72 125c.c., 150c.c. 90-750 Oil drag fan 1
73 125c.c., 150c.c. 90-152 Crankshaft shim (.003") as reqd.
73 125c.c., 150c.c. 90-153 Crankshaft shim (.004") as reqd.
73 125c.c., 150c.c. 90-154 Crankshaft shim (.005") as reqd.
73 125c.c., 150c.c. 90-155 Crankshaft shim (.010") as reqd.
74 125c.c., 150c.c. 24-4217 Crankshaft bearing (n/s) 1
75 125c.c., 150c.c. 90-346 Crankcase fixing screw washer (spring) 11
76 125c.c., 150c.c. 65-2158 Crankcase fixing screw (short) 9
77 125c.c., 150c.c. 90-3024 Exhaust pipe (standard) 1
77 150c.c. Swinging Arm 90-3070 Exhaust pipe 1
77 125c.c., 150c.c. 90-3033 Exhaust pipe (competition) 1
78 125c.c., 150c.c. 90-265 Exhaust pipe union nut 1
79 125c.c., 150c.c. 90-3002 Exhaust pipe union nut washer 1
80 125c.c., 150c.c. 90-248 Crankcase cover fixing screw (short) 2
81 125c.c., 150c.c. 90-831 Crankcase cover (nearside) complete 1
82 125c.c., 150c.c. 90-110 Crankcase dowel 2
83 125c.c., 150c.c. 90-147 Crankshaft oil seal (n/s) 1
84 125c.c., 150c.c. 90-798 Crankshaft oil seal retaining circlip (n/s) 1
85 125c.c. *90-743 Crankcase with fixed fittings (n/s) (1954) 1
85 150c.c. *90-779 Crankcase with fixed fittings (n/s) (1954) 1
85 125c.c., 150c.c. *90-828 Crankcase with fixed fittings (n/s) 1
86 125c.c., 150c.c. 15-5290 Crankcase cover grease nipple (n/s) 1
87 125c.c., 150c.c. 90-122 Clutch operating lever spring 1
88 125c.c., 150c.c. 90-108 Crankcase dowel bush 2
89 125c.c., 150c.c. 90-184 Clutch operating lever bush 1
90 125c.c., 150c.c. 90-261 Crankcase drain plug 1
91 125c.c., 150c.c. 90-180 Clutch operating lever complete 1
92 125c.c., 150c.c. 90-125 Crankcase fixing screw (long) 4
93 125c.c., 150c.c. 90-272 Mainshaft bearing thrust plate gasket 1
94 125c.c., 150c.c. 90-133 Mainshaft bearing thrust plate 1
95 125c.c., 150c.c. 90-73 Mainshaft oil seal housing gasket 1
96 125c.c., 150c.c. 89-3006 Mainshaft oil seal 1
97 125c.c., 150c.c. 90-72 Mainshaft oil seal housing 1
98 125c.c., 150c.c. 90-71 Gearbox sprocket distance sleeve 1
99 125c.c., 150c.c. 90-68 Gearbox sprocket (standard) 1
99 125c.c., 150c.c. 90-299 Gearbox sprocket (14T) (as required) 1
99 125c.c., 150c.c. 90-473 Gearbox sprocket (16T) (as required) 1
100 125c.c., 150c.c. 90-70 Gearbox sprocket lock washer 1
101 125c.c., 150c.c. 90-172 Gearbox sprocket nut 1
102 125c.c., 150c.c. 90-125 Crankcase cover screw (n/s) 3
103 125c.c., 150c.c. 90-106 Clutch operating lever cap 1
104 125c.c., 150c.c. 90-105 Clutch adjusting screw 1
105 125c.c., 150c.c. 89-366 Clutch adjusting screw lock nut 1
106 125c.c., 150c.c. 19-239 Flywheel only (A.C.) 1
106 125c.c., 150c.c. 19-240 Flywheel only (A.C.) 1
107 125c.c., 150c.c. 90-260 Flywheel magneto fixing nut washer 1
108 125c.c., 150c.c. 90-259 Flywheel magneto fixing nut 1
109 125c.c., 150c.c. 90-257 Flywheel magneto cam washer (plain) 1
110 125c.c., 150c.c. 90-258 Flywheel magneto cam washer (spring) 1
111 125c.c., 150c.c. 90-256 Flywheel magneto cam screw 1
125c.c., 150c.c. 90-444 Flywheel and generator complete (A.C.) (up to 1955) 1
125c.c., 150c.c. 90-767 Flywheel and generator complete (D.C.) (up to 1955) 1
125c.c., 150c.c. 90-959 Flywheel and generator complete (direct lighting) (1956) 1
125c.c. 90-960 Flywheel and generator complete (battery lighting) (1956) 1
150c.c. 90-958 Flywheel and generator complete (battery lighting) (1956) 1
112 125c.c., 150c.c. 19-284 Flywheel generator only (A.C./D.C.) 1
113 125c.c., 150c.c. 2-2580 Flywheel magneto fixing screw washer 3
114 125c.c., 150c.c. 65-2158 Flywheel magneto fixing screw 3
115 125c.c., 150c.c. 90-450 Mainshaft oil seal housing (must be fitted when 90-299 engine sprocket is fitted) 1
116 125c.c., 150c.c. 2-498 Mainshaft oil seal housing screw 5
117 125c.c., 150c.c. 29-3319 Mainshaft oil seal housing washer 5
118 125c.c., 150c.c. 90-67 Mainshaft primary drive gear bush 2
119125c.c., 150c.c.90-65Mainshaft primary drive gear complete (standard)1
119125c.c., 150c.c.90-474Primary drive gear complete (alternative)1
120125c.c., 150c.c.90-74Mainshaft gear (22T) (standard)1
120125c.c., 150c.c.90-458Mainshaft sliding gear (21T) (alternative)1
121125c.c., 150c.c.90-64Gearbox mainshaft (standard)1
121125c.c., 150c.c.90-445Gearbox mainshaft (alternative)1
122125c.c., 150c.c.1-4675Clutch push rod ball1
123125c.c., 150c.c.90-132Clutch push rod bush (rubber)1
124125c.c., 150c.c.90-83Layshaft bush1
125125c.c., 150c.c.90-98Clutch push rod (short)1
126125c.c., 150c.c.90-99Clutch push rod (long)1
127125c.c., 150c.c.90-76Clutch chainwheel distance bush1
128125c.c., 150c.c.90-24Clutch chainwheel circlip1
129125c.c., 150c.c.90-40Kickstarter pinion spring retainer1
130125c.c., 150c.c.90-39Kickstarter pinion spring1
131125c.c., 150c.c.90-177Kickstarter pinion1
132125c.c., 150c.c.90-120Camshaft sprocket1
133125c.c., 150c.c.90-134Primary chain1
134125c.c., 150c.c.35-1896Camshaft sprocket key1
135125c.c., 150c.c.90-121Camshaft sprocket lock washer1
136125c.c., 150c.c.90-340Crankshaft nut1
137125c.c., 150c.c.90-175Clutch chainwheel complete1
138125c.c., 150c.c.90-283Clutch chainwheel thrust washer1
139125c.c., 150c.c.90-28Clutch hub1
140125c.c., 150c.c.15-39Mainshaft washer1
141125c.c., 150c.c.90-340Mainshaft nut1
142125c.c., 150c.c.90-82Layshaft gear (32T) (standard)1
142125c.c., 150c.c.90-448Layshaft gear (28T) (alternative)1
143125c.c., 150c.c.90-83Layshaft bush1
144125c.c., 150c.c.90-61Swivel pin peg1
145125c.c., 150c.c.90-60Gear selector arm spring cup1
146125c.c., 150c.c.90-59Gear selector arm retaining spring1
147125c.c., 150c.c.90-90Kickstarter quadrant spring plate1
148125c.c., 150c.c.90-89Kickstarter quadrant spring1
125c.c., 150c.c.90-178Kickstarter quadrant with spindle1
149125c.c., 150c.c.90-179Kickstarter quadrant only1
150125c.c., 150c.c.90-88Kickstarter quadrant spindle only1
151125c.c., 150c.c.90-50Gear selector fork shaft1
152125c.c., 150c.c.90-51Gear selector fork spring ring1
153125c.c., 150c.c.90-54Gear selector fork spring cup1
154125c.c., 150c.c.90-55Gear selector fork spring cup ring1
155125c.c., 150c.c.90-53Gear selector fork spring1
156125c.c., 150c.c.90-190Gear selector fork and peg1
157125c.c., 150c.c.90-759Gear selector shaft thrust pad1
158125c.c., 150c.c.90-766Thrust pad shim washer (.002") (no longer required)1
159125c.c., 150c.c.90-173Gear selector arm complete1
160125c.c., 150c.c.90-81Layshaft gear (25T) (standard)1
160125c.c., 150c.c.90-457Layshaft sliding gear (26T) (alternative)1
160125c.c., 150c.c.90-449Layshaft sliding gear (25T) (alternative)1
125c.c., 150c.c.90-351Layshaft with gear (19T) (standard)1
161125c.c., 150c.c.90-352Layshaft only (standard)1
125c.c., 150c.c.90-476Layshaft with gear (23T) (alternative)1
162125c.c., 150c.c.90-353Layshaft gear (19T) (standard)1
162125c.c., 150c.c.90-447Layshaft gear (23T) (alternative)1
163125c.c., 150c.c. Competition90-285Crankcase generator seal1
164125c.c., 150c.c. Competition90-834Cylinder head (1955/6)1
164125c.c. Competition90-726Cylinder head (1954)1
164150c.c. Competition90-788Cylinder head (1954)1
165125c.c., 150c.c. Competition66-102Release valv