Myrons Mopeds

Contents:
1. Gyromat, MO, MO.1 and MO.K
2. Convert and MO.2
3. MO Info

 

 

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1. Morini Gyromat, MO, MO.1 and MO.K

 
1 MO Gyromat early Gyromat covers with early, iron, or late cylinder
1 MO Malaguti Malaguti covers, different start cable, early or late cyl.
2 MO “plain” plain covers, early aluminum cylinder
3 MO.1 Gyromat late Gyromat covers, iron or late cylinder
3 MO.1 “any brand” any brand covers, iron or late cylinder

 
4 MO-K Gyrokick early Gyrokick covers and starting parts
4 MO1-K Gyrokick late Gyrokick covers and start parts

 

There are 3 different top ends (cylinder, piston and head):
’68-73 early aluminum iron sleeve, piston ∅40.0 x 12-16
’72-77 iron cylinder   all cast iron,   piston ∅40.4 x 12-19 taller top
’73-77 late aluminum iron sleeve,   piston ∅40.4 x 12-16

There are 3 different speed versions (on US models):
speed power sprocket carb intake cylinder  piston skirt
30mph 2.2hp   13T   14/12  Ø13   same xx 5mm cut
25mph 1.4hp   12T   14/12  Ø12   same xx 3mm cut
20mph 1.0hp   12T   14/9    Ø9   restricted 3mm cut

 

 

Here are four parts lists combined into one. Each list has a quantity column, showing how many of each part. The quantity can have different colors. Black quantity means all. Light grey quantity means some. Orange means early. Magenta means restricted.

Each list has an illustration with item numbers for each part.

1 Gyromat 1968-77? MO Gyromat, MO Malaguti
2 MO xxxx 1973-76? MO “plain”
3 MO.1 xx  1975-79? MO1 late Gyromat, MO1 “any brand”
4 MO.K xx  1970-79? MO-K Gyrokick, MO1-K Gyrokick

      qty
#   1234 Morini#  price   description 
0   1111 26-0505 $25.0 seal set 2-17.35.7, 2-16.24.5, 15.24.5
0   1111 26-0506 none  gasket set original
0   1111 26-05A   $30.0 gasket set Athena
1   1111 26-5016 none  semi case, right
2   1111 26-5017 none  semi case, left ∅80 2-bolt
2   1000 12-45G   none  clutch cover w/ cable stop, Gyromat
3   1000 12-45M   none  clutch cover no cable stop Malaguti
3   0100 12-45P   none  clutch cover w/cable stop, plain
3   0010 12-4075 none  clutch cover w/cable stop, any brand
3   0010 12-45L    none  clutch cover with stop, late Gyromat
3   0001 12-4076 none  clutch cover Gyrokick
4   1100 12-20xx none  cyl-piston early-alu 40.0 (1.5-2.0hp)
4   1110 12-2050 none  cylinder-piston iron   40.4 (1.5-2.0hp)
4   1111 12-2049 $180  cylinder-piston iron 40.4 (1.0-1.5hp)
4   1111 12-2038 $200  cylinder-piston alu. 40.4 (1.5-2.0hp)
4   1111 12-2038 $170  cyl.-piston alu. ’77 40.4 good-used
5   1100 27-50xx none  cylinder head 46 x 46 ’70-type
5   0111 27-5019 $35.0 cylinder head 46 x 46 ’77-type
6   1000 12-44G   none  magneto cover, says Gyromat
6   1000 12-44M   none  magneto cover, says Malaguti
6   0100 12-44P   none  magneto cover, plain
6   0010 12-4074 $35.0 magneto cover, any brand
6   0010 12-44L   $39.0 magneto cover, late Gyromat
6   0001 12-4021 none  magneto cover, Gyrokick 
7   2220 29-1165 $0.70 bolt M6x25 slot xxx  R cover rr
7   0220 29-1986 $0.80 bolt M6x25 allen blk R cover rr
7   0001 29-1168 $1.00 bolt M6x35 slot xxx  case lo-rr
8   1110 29-1168 $1.00 bolt M6x35 slot xxx  case lo-rr
8   0110 29-1988 $0.60 bolt M6x35 allen blk case lo-rr
8   0008 29-1169 1 -.70 bolt M6x40 slot xxx  case
9   8880 29-1169 1 -.70 bolt M6x40 slot xxx  case
9   0880 29-1989 $1.20 bolt M6x40 allen blk case
9   0006 29-1170 1 -.70 bolt M6x50? slot      R cover all 6
10 3330 29-1171 1 -.80 bolt M6x45 slot xxx  R cover fr
10 0330 29-1991 $1.40 bolt M6x50 allen blk R cover fr
10 2222 29-1171 1 -.80 bolt M6x45 slot xxx  Left cover
10 0220 29-1991 $1.40 bolt M6x50 allen blk Left cover
11 2222 23-5003 $7.00 stud, intake   M5 x 50 for MO, MO1, MO2
12 2222 13-1004 $0.40 nut, intake stud    M5 – 0.80 x 5 hex8
13 2222 23-5014 $2.50 stud, exhaust M5 x 30 for MO, MO1, MO2, M1
14 2222 13-3023 $1.50 nut, tall exhaust   M5 – 0.80 x 25 hex8or M101
15 4444 23-5001 $4.00 stud, cyl. M6 x 108 class 8.8 to hold 8 ft-lbs
15 4444 23-50A   $3.50 stud, cylinder M6 x 110 class 8.8
15 4444 23-5002 none  (use 23-5001) class 10.9 to hold 11 ft-lbs
16 4444 13-1001 $0.60 nut, cylinder head M6 – 1.00 x 6 hex10
17 4444 25-4001 $0.20 washer, plain   Ø6 Ø13 x 1.5 for head
18 3333 16-7005 $7.50 case sleeve ∅8-10 x 40
19 1111 16-4030 $8.00 gasket, cylinder base   Ø6 46×46
20 1110 16-4031 $5.00 gasket, exhaust Ø5-36-Ø20
20 0001 16-4093 $5.00 gasket, exhaust Ø5-36-Ø20
21 1111 16-4032 $9.00 gasket, cylinder head   Ø6 46×46
22 1111 16-4033 $8.00 gasket, case center
23 1111 16-4034 $9.00 gasket, clutch cover
24 1111 16-4035 $5.00 gasket, intake lower x Ø5-36 19×10
25 1111 16-4036 $3.00 gasket, intake upper x Ø8-36 19×10
26 1111 13-6004 $7.00 spacer-insulator, intake Ø5-36 19×10
27 1111 25-1005 $42.0 intake, right type Ø13 x Ø16 (2.0 hp)
27 1111 25-1014 $27.0 intake, right type Ø12 x Ø16 (1.5 hp)
27 0110 25-1048 none  intake, right type   Ø9 x Ø16 (1.0 hp)
27 0010 25-1014 $35.0 intake, front type Ø12 x Ø16 (1.5 hp)
27 0010 25-1052 none  intake, front type Ø13 x Ø16 (2.0 hp)
28 2222 25-4012 $0.25 washer, spring  Ø5  Ø8  x 1.5
32 1000 27-3007 $10.0 oil filler plug M14-1.25
33 1000 16-4026 $4.00 gasket, oil filler plug   ring Ø14×19
34 1111 29-4132 $3.00 drain plug M8 x 10
35 1111 16-4008 $1.00 seal washer, drain plug Ø8 x 14
36 1000 00-0000 $2.00 oil check plug M6 x 8
36 0111 27-3007 $10.0 oil fill/check plug M14-1.25
37 1000 00-0000 $2.00 check plug gasket 6 x 12
37 0111 16-4026 $4.00 gasket, oil fill/check   ring Ø14×19
42 1110 10-0009 none  crank shaft, bushing-type rod 3 oil hole
42 0001 10-0015 none  crank shaft, bearing type rod
48 1110 11-5001 $8.00 bushing Ø11.75 Ø15.05 x 15 see note 1
48 0001 16-1005 $9.00 needle bearing Ø12 Ø15 x 15
49 1110 11-0004 none  connecting rod with bushing
49 0001 10-0015 none  connecting rod, bearing type
50 1111 26-8001 $10.0 pin, piston Ø12 x 31.5
51 2222 10-4001 $1.50 clip, wrist pin for Ø12 hole
52 1000 23-01xx  none  piston for early-alu cyl 12-16-17-40.0
52 1111 23-0130 none  piston for iron cyl 12-19-17-40.4 std.
52 1111 23-0130 $63.0 piston for iron cyl 12-19-17-40.4 GOL 0307
52 0000 23-0131 none  piston for iron cyl 12-19-17-40.6 1-over
52 0000 23-0131 none  piston for iron cyl 12-19-17-40.8 2-over
52 1111 23-0125 $70.0 piston for alu. cyl 12-16-17-40.4 std.
52 1111 23-0125 $60.0 piston for alu. cyl 12-16-17-40.4 generic
52 0000 23-0126 $72.0 piston for alu. cyl 12-16-17-40.6 1-over
52 0000 23-0126 $70.0 piston for alu. cyl 12-16-17-40.8 2-over
54 2000 26-10xx  $10.0 piston ring 40.0 x 1.5 GI standard
54 0222 26-1045 $9.00 piston ring 40.4 x 1.5 GI standard
54 0000 26-1046 $12.0 piston ring 40.6 x 1.5 GI oversize
54 0000 26-1046 $12.0 piston ring 40.8 x 1.5 GI oversize
56 2222 12-6001 $16.0 ball bearing, crankshaft 6203C3
57 2222 10-6001 $7.50 seal, crank shaft  17 x 35 x 8 (or 7)
58 1111 12-7025 $4.50 woodruff key, flywheel 2.5 x 3 x 9 M83
59 1111 13-3007 $10.0 nut, flywheel M8-1.25 × 16 hex15
60 1111 16-3004 none  rubber boot, spark plug cap
61 1110 23-7001 $6.00 spark plug cap generic
61 0001 23-7020 $6.00 spark plug cap generic
63 1110 20-0003 none  clutch housing pedal
63 0001 00-0000 none  clutch housing kick
63 1111 20-0012 $75.0 clutch assembly pedal
63 0001 00-0000 none  clutch assembly kick
64 2222 12-7020 none  clutch shoe (ea)
65 2222 20-1033 $5.00 spring, extension, clutch
66 2222 12-7021 $9.50 clutch shoe master link
67 4444 25-7002 $3.00 spring anchor pin Ø3 x 14 substitute
68 1110 27-0005 none  clutch drum Ø84, bushing and gear set
68 0001 27-0021 none  clutch drum Ø84, bushing and gear set
69 1000 11-5009 none  bushing plain Ø15 Ø18 x 18.5 use 11-5010
69 0111 11-5010 none  bushing plain Ø15 Ø18 x 18.5
70 1110 12-7022 $35.0 clutch starting plate 20.8 deep
71 1110 10-4006 $8.00 clip, clutch plate for Ø84 hole
72 1110 13-1003 $2.50 nut, clutch M10-1.25 x 6 hex17
73 1110 25-4018 $5.00 washer, plain  Ø10 Ø21 x 1.8 clutch
73 1110 25-401S $2.00 substitute Ø10 Ø22 x 1.6
74 1110 20-1019 $15.0 spring, compression Ø27 Ø19 x 21
75 1110 19-0004 $15.0 lever, start rear-pull Ø12
75 1110 21-0004 none  start lever/shaft regular (front-pull)
76 1110 26-8014 none  pin, clutch lever
77 1110 20-1018 $8.00 spring, torsion, starter lever
77 1110 20-1022 none  spring, torsion, starter lever use 20-1018
78 1110 10-7002 $2.00 o-ring, starting lever Ø2 x 9 id (13 od)
79 1111 25-4005 none  washer, shim Ø15 Ø22 x 0.6 before drum
80 1111 25-4005 none washer, shim Ø15 Ø22 x 0.6 after drum
82 1111 13-1003 $2.50 nut, gear M10-1.25 x 6 hex17
83 1110 25-0001 $45.0 gear primary (driven) 52T x 14.2 (new but rusty)
83 0001 25-0003 none  gear primary (driven)
84 1110 10-1028 none  shaft, prim. with gear 10T x ???
84 0001 10-1059 none  shaft, prim. with gear
85 1111 10-1029 none  shaft, drive with gear 26T x ???
87 2222 25-4005 none  washer, shim   Ø15 Ø22 x 0.6  prim. shaft
88 2222 25-4040 none  washer, shim Ø13 Ø18 x 0.2
89 2222 12-6002 $10.0 ball bearing, drive shaft #6202 15 x 35 x 11
90 1111 11-5002 none  bushing with lip, prim. shaft Ø13 Ø17 x 17
91 1111 11-5003 none  bushing with lip, drive shaft Ø13 Ø?? x ??
92 1110 10-6003 $6.00 seal, drive shaft  15 x 24 x 7
92 0001 10-6008 $6.00 seal, drive shaft  15 x 24 x 5
93 1111 23-2506 $15.0 sprocket 12T tapered, keyed
93 1111 23-2501 $15.0 sprocket 13T tapered, keyed
94 1111 13-1002 $10.0 nut, sprocket M12-1.25 x 6 hex17
95 1111 12-7002 none  key, sprocket 3.0 x 4.7 x 12.3 use M96
95 1111 12-7002 $5.00 key, sprocket M96 3.0 x 5.0 x 12.4
98 1110 10-1020 none  shaft, pedal
99 1110 23-2543 none  pedal sprocket 17T
99 1110 23-2507 none  pedal sprocket 19T
#    1234 Morini#  price   description
100 1110 20-6001 none  coupling claw (collar)
101 1110 20-1015 none  spring, coupling claw, pedal
102 1110 10-5005 $1.50 snap ring, outer for Ø16 shaft
103 1111 25-4007 none  washer, plain  Ø16 Ø26?x1.5?
105 2220 10-6004 $7.50 seal, pedal shaft  16 x 24 x 5
106 1110 12-7016 $12.0 pedal chain #35 x 24 link Regina ASA35
107 1110 23-7002Dnone pedal arm D right 4¾x1¼” 434R use 502R
107 0000 23-700R none  pedal arm D right   5 x1½” 502R
108 1110 23-7002Snone pedal arm S left    4¾x1¼” 434L use 502L
108 0000 23-700L $20.0 pedal arm S left      5 x1½” 502L
109 2220 12-7017 $2.00 pedal wedge pin Ø9.0 H-134
111 1000 12-0008 none  carb SHA14/12 #50 fits 16 use 12-0012
111 0111 12-0012 $73.0 carb SHA14/12 #50 fits 16 (2.0, 1.4 hp)
111 1111 12-0061 none  carb SHA14/9   #43 fits 16 MO1,2 (1.0 hp)
112 1111 15-0006 none  air cover thin #36 with 2 inlet tubes #40
113 1111 29-0034 none  magneto Dansi 101286 ign gnd internal
113 1111 29-0045 $330. magneto Dansi 101765 ign gnd external
114 2000 29-6021 $1.00 bolt M4 x 12 phil. pan stator  use 29-6022
114 0222 29-6022 $0.70 bolt M4 x 12 phil wide stator
115 1111 16-3008 $3.00 grommet, magneto int spark 2-thin 1-thick
115 1111 16-3022 none  grommet, magneto ext spark 3-thin holes
115 0002 16-3014 none  grommet
118 1110 12-7027 $4.00 spark plug NGK B6ES
118 0001 12-7076 $4.00 spark plug
119 1110 21-4002 none  start cable adapter original (front-pull)
126 0001 00-0000 none  plug
180 0001 19-1031 none  kick lever
181 0001 23-1039 none  kick lever pin
182 0001 25-4023 none  washer, plain
183 0001 16-3015 none  rubber bumper
184 0001 20-1059 none  kick start spring
185 0001 10-0038 none  start shaft
186 0001 10-7003 none  start shaft o-ring
187 0001 18-4022 none  coupling claw
188 0001 20-1070 none  coupling spring
189 0001 18-1099 none  starting gear
192 0001 10-5005 $1.50 snap ring, outer for Ø16 shaft
193 0001 25-4054 none  washer

 

Note 1: The piston pin bushing requires reaming to ∅12.0 and drilling after it is pressed in, with an adjustable reamer and a precision holder tool.

1. 20-0012 inner side, 2. 20-0012 with 13-5031, 3. 20-0012 outer side, 4. 27-0005a

1. 12-7020, 2. 12-7014, 3. Myrons Morini pistons in 2013

 

 

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2. Morini Convert and MO.2

 
1 MO2 Convert with early, iron or late cylinder
1 MO2 Malaguti Duomatic different covers, early or late cyl.
2 MO2 “any brand” covers for re-branding, iron or late cylinder

There are 3 different top ends (cylinder, piston and head):
’68-73 early aluminum iron sleeve, piston ∅40.0 x 12-16
’72-77 iron cylinder   all cast iron,   piston ∅40.4 x 12-19 taller top
’73-77 late aluminum iron sleeve,   piston ∅40.4 x 12-16

There are 2 different speed versions (on US models):
speed power sprocket carb intake cylinder  piston skirt
30mph 2.2hp   13T   14/12  Ø13   same xx 5mm cut
25mph 1.4hp   12T   14/12  Ø12   same xx 3mm cut

 

Here are two parts lists combined into one. Each list has a quantity column, showing how many of each part. The quantity can have different colors. Black quantity means all. Light grey quantity means some. Orange means early. Magenta means restricted.

Each list has an illustration with item numbers for each part. n/s means not shown.

1 Convert 1973-77? MO2 Convert, MO2 Malaguti Duomatic
2 MO.2 1975-79? MO2 “any brand”

     qty
#   12  Morini# price   description 
0   11 26-0508 $29.0 seal set MO2 1-47, 1-48, 2-113, 1-104
0   11 26-0506 $35.0 gasket set original
0   11 26-05A   $28.0 gasket set Athena
1   11 26-5032 none  semi case, right
2   11 26-5017 none  semi case, left ∅80 2-bolt
3   01 12-4034 $65.0 clutch cover for MO2 “any brand”
3   10 00-0000 none  clutch cover for Convert
4   11 12-2038 $200  cylinder-piston alum ’77 40.4
4   11 12-2038 $170  cyl.-piston alum ’77 40.4 good-used
4   11 12-2049 $180  cylinder-piston iron
5   11 27-5019 $35.0 cylinder head 46 x 46 ’77-type
6   10 12-44M   none  magneto cover, says Malaguti
6   11 12-4074 $35.0 magneto cover, plain 
7   11 29-1988 $0.60 bolt M6x35 allen blk case
8   88 29-1989 $1.20 bolt M6x40 allen blk case
9   01 29-1990 $1.20 bolt M6x45 allen blk R cover up-rr
9   02 29-1990 $1.20 bolt M6x45 allen blk L cover
9   30 29-1991 $1.40 bolt M6x50 allen blk L cover
9   10 29-1990 $1.20 bolt M6x45 allen blk R cover lo-rr
9   01 29-1991 $1.40 bolt M6x50 allen blk R cover lo-rr
10 33 29-1994 --N/A- bolt M6x65 allen blk R cover
10 11 29-1995 $1.20 bolt M6x70 allen blk R cover up-fr
11 22 23-5003 $7.00 stud, intake   M5 x 50
11 22 29-4069 none  stud, intake for iron cylinder
12 22 13-1004 $0.40 nut, intake stud    M5 – 0.80 x 5 hex8
13 22 23-5014 $2.50 stud, exhaust M5 x 30
14 22 13-3023 $1.50 nut, tall exhaust   M5 – 0.80 x 25 hex8
15 44 23-5001 $4.00 stud, cyl. M6 x 108 class 8.8 to hold 8 ft-lbs
15 44 23-50A   $3.50 stud, cylinder M6 x 110 class 8.8
16 44 13-1001 $0.60 nut, cylinder head M6 – 1.00 x 6 hex10
17 44 25-4001 $0.20 washer, plain   Ø6 Ø13 x 1.5 for head
18 22 16-7005 $7.50 case sleeve ∅8-10 x 40
19 11 16-4030 $8.00 gasket, cylinder base   Ø6 46×46
20 10 16-4031 $5.00 gasket, exhaust Ø5-36-Ø20
20 01 16-4093 $5.00 gasket, exhaust Ø5-36-Ø20
21 11 16-4032 $9.00 gasket, cylinder head   Ø6 46×46
22 11 16-4033 $8.00 gasket, case center
23 11 16-4034 $9.00 gasket, clutch cover
24 11 16-4035 $5.00 gasket, intake lower x Ø5-36 19×10
24 20 16-7001 none  alignment tube Ø6 Ø8 x ?? up-fr, lo-rr
24 01 16-7001 none  alignment tube Ø6 Ø8 x ?? up-fr only
25 11 16-4036 $3.00 gasket, intake upper x Ø8-36 19×10
26 11 13-6004 $7.00 spacer-insulator, intake Ø5-36 19×10
27 10 25-1005 $42.0 intake, right type Ø13 x Ø16 (2.0 hp)
27 01 25-1014 $27.0 intake, right type Ø12 x Ø16 (1.5 hp)
27 01 25-1052 $35.0 intake, front type Ø13 x Ø16 Sebring
28 40 25-4012 $0.25 washer, spring  Ø5  Ø8  x 1.5
28 04 25-4013 $0.25 washer, spring  Ø5  Ø8  x 1.5
31 11 27-0009 $12.0 oil dip stick
32 11 16-4026 $1.00 dip stick gasket
33 11 29-4132 $0.80 drain plug M8 x 10 hex
34 11 16-4008 $1.00 gasket, oil drain plug x ring Ø8 x 14
35 11 10-0042 none  crank shaft, bushing-type rod
35 11 10-0046 none  crank shaft, bearing-type rod
41 11 26-8001 $10.0 pin, piston Ø12 x 31.5
42 22 10-4001 $1.50 clip, wrist pin for Ø12 hole
43 11 23-0125 $70.0 piston for alu. cyl 12-16-17-40.4 std.
43 11 23-0125 $60.0 piston for alu. cyl 12-16-17-40.4 generic
43 00 23-0126 $72.0 piston for alu. cyl 12-16-17-40.6 1-over
43 00 23-0126 $70.0 piston for alu. cyl 12-16-17-40.8 2-over
43 11 23-0130 none  piston for iron cyl 12-19-17-40.4 std.
43 11 23-0131 none  piston for iron cyl 12-19-17-40.6 1-over
44 22 26-1045 $9.00 piston ring 40.4 x 1.5 GI standard
44 00 26-1046 $12.0 piston ring 40.6 x 1.5 GI oversize
44 00 26-1046 $12.0 piston ring 40.8 x 1.5 GI oversize
45 11 12-6001 $16.0 ball bearing, left crank 6203C3
46 11 12-6007 $12.0 ball bearing, right crank 6204
47 22 10-6001 $7.50 seal, crank shaft  17 x 35 x 8 (or 7)
48 11 10-6012 $7.00 seal, crank shaft  20 x 35 x 8 (or 7)
49 11 12-7025 $4.50 woodruff key, flywheel 2.5 x 3 x 9 M83
50 11 13-3007 $10.0 nut, flywheel M8-1.25 × 16 hex15
51 11 16-3004 none  rubber boot, spark plug cap
52 11 23-7001 $6.00 spark plug cap generic
53 11 18-0001 $75.0 gear #1 driving 18Tx12.3 drum Ø84 w/bushing
54 11 11-5007 $18.0 bushing plain, clutch drum Ø18 Ø20 x 17.5
55 11 20-6004 $10.0 hub, clutch #1
56 22 12-7012 $20.0 clutch #1 shoe (each)  3-45° grooves
57 22 20-1033 $5.00 spring, extension, clutch
58 44 12-7021 $9.50 clutch shoe master link #520
59 88 25-7002 $3.00 spring anchor pin Ø3 x 14 substitute
60 11 20-0007 $40.0 clutch #1 assembly
61 11 11-5016 none  inner steel tube, clutch hub Ø15 Ø19 x 32.5
62 11 11-5013 none  bushing plain, clutch hub Ø19 Ø22 x 31.75
63 11 16-0001 $35.0 gear #2 (driving) with start plate 22T
64 11 12-7014 $20.0 clutch #2 shoe (each)  2-90° grooves
65 11 13-0001 none  starting clutch plate
66 11 27-1004 $12.0 starter clutch hub Ø28 hex28
67 11 20-1016 $15.0 spring, compression, starter
68 11 13-50xx $10.0 plate, starter, 3 Ø10 studs
68 11 13-5015 $15.0 plate, starter, 3 Ø8 studs for bushings
00 11 16-3026 $18.0 bushing set of 3, starter Ø8 Ø10 x 8
69 11 25-4028 $19.0 washer, large  Ø28 Ø56 x 1.0
70 11 16-0003 none  starter thrust block (bearing)
72 11 23-1027 none  spiral pawl, starter for MO2
73 11 23-7026 none  plate, starter spiral anchor, 3-hole
74 33 29-6025 $2.00 bolt M5 x 5 phillips sunk starter
75 11 16-1008 none  roller bearing inner, R crank Ø10-Ø14 x 10
76 11 20-1036 $6.00 spring, extension, for MO2 starter
77 11 16-7010 $12.0 wire hook, starter cable for MO2
78 11 12-7061 none  inner cable original 1-ended Ø1.6 50″
78 11 12-706I  $5.00 inner cable subst. Ø1.2 50″ requires D14p
78 11 12-706S $12.0 cable subst. Ø1.2 43 x 50″ requires D14p
79 11 13-6036 $7.00 cable stop-guide, starter M10-1.25
80 11 16-3010 $2.50 rubber protector subst. for start cable
80 11 25-4005 none  washer Ø15 Ø22 x 0.6
81 11 10-1036 $35.0 shaft, prim. with gear 10T x 17.0 (new but rusty)
82 11 10-1029 none  shaft, drive with gear 26T x ??? pre Jan’78 MO2
82 11 10-1076 none  shaft, drive with gear 26T x ??? after Jan’78 MO2
83 11 10-5009 $5.00 external retaining ring for Ø22 shaft
84 11 25-4043 $12.0 washer, plain Ø22 Ø28 x 1.6
84 11 25-4043 $00.0 actually made of 2 or 3 thinner shims
85 22 20-1037 none  spring, compression, ratchet gear Ø4 x 9
86 11 12-0025 $85.0 gear #1 (driven) with ratchet ring & bushing 59T
88 11 13-6012 $8.00 spacer, 1st/2nd gear Ø15 Ø24 x 11
89 11 12-7029 $45.0 gear #2 (driven) 52T x 10.0 for MO2 (new but rusty)
90 11 12-7002 $5.00 key, main gear M96 3.0 x 4.7 x 12.3
91 11 11-5017 none  bushing plain, first gear 59T Ø17 Ø19 x 20
92 11 13-3017 $12.0 nut, prim. shaft   M14 – 1.25 x 8  hex19
93 11 25-4031 $10.0 washer, plain  Ø14 Ø26 x 1.5
94 11 10-5006 $2.00 snap ring, outer for Ø12 shaft
95 22 25-4026 none  washer, shim  Ø12 Ø18?x0.2?
96 11 12-6003 $7.00 ball bearing, prim. shaft #6201 12 x 32 x 10
97 11 10-1035 none  shaft, pedal
98 11 25-4030 $5.00 washer, 3-tab  Ø15 Ø30 x 0.6
99 11 16-4101 $2.50 gasket, starter cable, ring Ø10×14

#     12  Morini# price   description 
100 33 25-4005 none  washer, shim Ø15 Ø22 x 0.6  clutch drum
101 11 25-4040 none  washer, shim Ø13 Ø18 x 0.2
102 11 12-6002 $10.0 ball bearing, drive shaft #6202 15 x 35 x 11
103 22 11-5002 none  bushing with lip, prim. shaft Ø13 Ø17 x 17
104 11 10-6003 $6.00 seal, drive shaft  15 x 24 x 5
105 11 23-2506 $15.0 sprocket 12T tapered, keyed
105 11 23-2501 $15.0 sprocket 13T tapered, keyed
106 11 13-1002 $10.0 nut, sprocket M12-1.25 x 6 hex17
107 11 12-7002 $5.00 key, sprocket M96 3.0 x 4.7 x 12.3
108 10 23-2543 none  pedal sprocket 17T
108 01 23-2507 none  pedal sprocket 19T
109 11 20-6001 none  coupling claw (collar)
110 11 20-1015 none  spring, coupling claw, pedal
111 11 10-5005 $1.50 snap ring, outer for Ø16 shaft
112 33 25-4007 none  washer, plain  Ø16 Ø26?x1.5?
113 22 10-6004 $7.50 seal, pedal shaft  16 x 24 x 5
114 11 12-7016 $12.0 pedal chain #35 x 24 link Regina ASA35
115 11 23-7002Dnone pedal arm D right 4¾x1¼” 434R use 502R
115 00 23-700R none  pedal arm D right   5 x1½” 502R
116 11 23-7002Snone pedal arm S left    4¾x1¼” 434L use 502L
116 00 23-700L $20.0 pedal arm S left      5 x1½” 502L
117 22 12-7017 $2.00 pedal wedge pin Ø9.0 H-134
118 11 12-0012 none  carb SHA14/12 #50 fits 16 (2.0, 1.4 hp)
118 11 12-00A   $73.0 carb SHA14/12 #50 fits 16mm intake
118 11 7758-85 none  air cover thin #36 with 2 inlet tubes #40
119 11 29-0034 none  magneto Dansi 101286 ign gnd internal
119 01 29-0045 $330. magneto Dansi 101765 ign gnd external
120 22 29-6022 $0.70 bolt M4 x 12 phil wide stator
121 11 16-3008 $3.00 grommet, magneto int spark 2-thin 1-thick
121 01 16-3022 none  grommet, magneto ext spark 3-thin holes
123 10 12-7076 $4.00 spark plug NGK B6ES
123 01 12-7027 $4.00 spark plug NGK B6ES
124 22 26-8035 none  gear shaft pawl
125 11 13-1003 $2.50 clutch nut M10-1.25 x 6 hex17
126 11 25-4018 $5.00 clutch washer Ø10 Ø21 x 1.8
127 22 20-1017 $5.00 clutch #2 shoe spring
128 11 25-4041 none  washer
129 11 11-0015 none  con. rod, bearing type
130 11 26-8038 none  return spring pin
131 11 16-0002 $70.0 clutch #2 with gear 22T and start plate
132 11 11-5001 $8.00 bushing Ø11.75 Ø15.05 x 15 see note 1
132 11 16-1005 $9.00 needle bearing Ø12 Ø15 x 15

 

Note 1: The piston pin bushing requires reaming to ∅12.0 and drilling after it is pressed in, with an adjustable reamer and a precision holder tool.

 

 

 

3. MO Info

It’s hard to find info about these. Like other Morini and Minarelli engines, the engine identity is concealed or replaced with the bike maker name. The bike maker flyers are the best source of official photos and information.

The first horizontal-cylinder Morini one-speed moped engines were on the 1968 Malaguti Dribbling.

 

early aluminum cylinder: The late 60’s and early 70’s horizontal aluminum cylinders with all-horizontal fins, have a standard bore of 40.0 mm. 

iron cylinder: These horizontal cylinders are cast iron, darker, heavier, with top and bottom fins vertical and side fins horizontal. From the front view, the fins resemble a very thick plus sign. They replaced the early-aluminum cylinder in the early 70’s. They have a 40.4 bore. 

aluminum cylinder: These horizontal iron sleeve aluminum cylinders had bigger fins, thicker plus sign style. They were made from the early 1970’s to about 1980. They have a 40.4 bore. 

 

 

Convert: In the mid-1970’s Morini developed a two-speed automatic version of the Gyromat, called the Convert. A Morini Convert is the precursor of the Morini MO-2.

Gyrokick: In the mid-1970’s Morini produced a kick-start version of the Gyromat, called the Gyrokick. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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