Contents: 1. Sachs Engines 2. 505/1 Parts List 3. 504/1 Parts List
1955 Sachs poster
Contents: 4. Speed Versions 5. Factory Manuals
1. Sachs Engines
W
elcome. “Fichtel & Sachs” was founded in 1895 by Ernst Sachs and Karl Fichtel, in Schweinfurt Germany. Ernst Sachs was a racing cyclist and technical wiz, while Karl Fichtel was a business manager. They made hubs and spindles for bicycles and lorries. Ernst Sachs designed and patented a new bicycle hub, the “coaster brake” in 1894, which sold successfully, and also invented the “free-wheel” in 1903. Fichtel died in 1911, and Sachs, in 1932. The first Sachs engine did not come out until 1930.
Sachs introduced their first Saxonette moped in 1937, a 60cc two-stroke 1.2 hp “motor wheel” where the rear wheel and motor were a unit. 320,000 were made in 1937, and 500,000 in 1938. Read more at https://en.wikipedia.org/wiki/Sachs_Motorcycles
Sachs 301/A
Sachs 502/3
Sachs 501/2
Sachs 504/1
Sachs 504/1
Sachs 505/1 and 505/2
Sachs engines have the following numbering scheme: SSX/YZ(W)
- SS is the engine size 30, 50, 80, 100, 150, 175 (50 for US models)
- X is the bottom end designation 1, 2, 3, 4, 5, 6 (4, 5 or 8 for US models).
- Y is the number of speeds 1, 2, 3, 4, 5, 6 or A ( 1 or A for US models)
- Z is the cylinder designation, and represents the speed restrictions applied, and may be A, B, C or D
- W is an additional designation sometimes included on later models and import models to identify other peculiarities. A “K” for example indicates the kickstart version.
Examples:
- 301/A is 30 cc size, type “1” bottom end (rear bicycle wheel), “A” automatic transmission
- 501/4A is 50 cc size, type “1” bottom end (1960’s kick-start), “4” speed manual trans.
- 502/2A is 50 cc size, type “2” bottom end (1960’s with pedals) “2” speed manual trans.
- 504/1A is 50 cc size, type “4” bottom end (1970’s no pedals), “1” speed, “A” speed version
- 505/1D is 50 cc size, type “5” bottom end (1970’s with pedals), “1” speed, “D” speed version
- 508/A is 50 cc size, type “8” bottom end, (80’s 2sp no pedals) “A” automatic transmission
- 1005/5A 100 cc size, type “5” bottom end (1980’s kick-start), “5” speed, “A” speed version
- 1255/6A 125 cc size, type “5” bottom end (1980’s kick-start), “6” speed, “A” speed version
2. Sachs 505/1A, ANL, B, C, D – Illustrated Parts List (1981)
000000000000 A = 505/1A a = 505/1ANL B = 505/1B C = 505/1C D = 505/1D * = 10 x = as required
0o0 quantity Sachs 505 Parts Group A
000 AaBCD part number price description
Sachs 505 parts group A
0A1 00100 0287.140.200 crankcase set for B
0A1 11011 0287.140.203 crankcase set for A, a, C, D
0A1 00001 0287.140.215 case set for D electronic
0A2 44444 0240.058.106 cylinder stud M6-1 x 32
0A3 44444 0944.142.002 washer 6.2x12x1.5
0A4 44444 0242 129 001 nut M6 – 1.0
0A5 66666 0251.121.000 rubber mounting bush
0A6 11111 0960.136.000 rubber grommet (1-hole)
0A6 11111 0960.135.000 rubber grommet (no-hole)
0A7 11111 0260.020.000 rubber grommet (2-hole)
0A7 11111 0260.029.000 rubber grommet (3-hole)
0A7 00011 0260.020.005 rubber grommet (4-hole)
0A8 33333 0247.144.100 mount distance tube
0A9 11110 0244.168.000 closing cap Ø13
A10 11110 0244.167.100 round chrome cap with “SACHS”
A10 11110 0244.167.102 round chrome cap plain
A10 00001 0244.167.001 cap for elec ign or alum flywheel
A11 ***** 0240.188.002 allen screw M6-1 x 70
A12 11100 0650.131.000 sealing ring 10×14
A13 11100 1726.080.100 screw plug M10-1
A14 11111 0240.191.002 allen screw M6-1 x 20
A15 44444 0240.187.002 allen screw M6-1 x 55
A16 11111 0250.084.005 oil seal 16x24x4
A17 11111 0250.155.300 clutch cover gasket
A18 11111 0277.117.000 cover with “SACHS” with plug
A18 11111 0211.151.201 cover without “SACHS” no plug
A19 11111 0240.140.207 oil level screw plug M14-1
A20 55555 0640.027.002 oval head screw M5-0.8 x 14
000 quantity Sachs 505 Parts Group B
000 AaBCD part number price description
0B1 00100 0287.137.114 cylinder silver for B
0B1 00100 0287.137.151 cylinder black for B
B01 11000 0287.137.119 cylinder silver for A, a
0B1 11000 0287.137.153 cylinder black for A, a
B01 00011 0287.137.134 cylinder silver for C, D
0B1 00011 0287.137.155 cylinder black for C, D
0B2 11111 0998.004.001 spark plug Bosch W7A
0B3 11111 0250.156.200 intake gasket
0B4 11110 0211.152.000 flange (only for some)
0B5 11111 0250.160.101 rubber o-ring
0B6 10100 0267.114.402 intake pipe Ø14.0 for A,B
0B6 00011 0267.114.403 intake pipe Ø14.5 for C,D
0B6 00001 0267.114.404 intake pipe Ø12.5 for D*
0B6 01000 0267.114.505 intake pipe Ø12.0 for a2*
0B7 22222 0244.100.008 washer
0B8 22200 0940.085.102 hex screw M6x35
0B8 00022 0240.003.104 hex screw M6x25
Sachs 505 parts group B
0B9 11111 0291.021.000 start cable inner wire
B10 11111 0291.022.200 decompressor
B11 11111 0660.018.000 protective cap
B12 11111 0291.024.011 start cable conduit
B13 11111 0250.154.000 cylinder base gasket
B14 11111 0818.202.000 washer 10.7 x 20.2 x 1.7
B15 11111 2842.016.000 flywheel nut M10-1.00
B16 11111 0230.106.200 oil seal 15 x 35 x 7
B17 11111 0244.153.000 washer 30 x 36.8 x 1.5
B18 22222 0232.120.003 ball bearing 6202 C3
B19 xxxxx 0246.009.000 washer 15.3 x 20 x 0.3
B19 xxxxx 0246.009.001 washer 15.3 x 20 x 0.5
B19 xxxxx 0246.009.002 washer 15.3 x 20 x 1.0
B19 xxxxx 0246.009.003 washer 15.3 x 20 x 0.1
B19 xxxxx 0246.009.004 washer 15.3 x 20 x 0.15
B19 xxxxx 0246.009.005 washer 15.3 x 20 x 0.8
B19 xxxxx 0246.009.007 washer 15.3 x 20 x 0.2
B20 11111 0246.005.000 woodruff key 3 x 3.7
B21 11110 0288.114.002 crankshaft for A,a,B,C
B21 00001 0288.114.005 crankshaft for D
B22 22222 0245.000.000 piston pin clip
B23 11111 0216.003.105 piston pin Ø12
B24 11100 0286.378.005 piston assy Ø38.0 x 53.0
B24 11100 0286.378.006 piston assy Ø38.6 x 53.0
B24 00011 0286.378.051 piston assy Ø38.0 x 50.5
B24 00011 0286.378.052 piston assy Ø38.6 x 50.5
B25L11111 0215.009.000 lower ring std Ø38.0×2.0
B25L11111 0215.010.001 lower ring o.s Ø38.6×2.0
B25u11100 0215.009.000 upper ring std Ø38.0×2.0
B25u11100 0215.010.001 upper ring o.s Ø38.6×2.0
B25u00011 0215.100.100 upper ring std Ø38.0×1.5
B25u00011 0215.100.102 upper ring o.s Ø38.6×1.5
B26 11111 0232.157.001 needle bearingØ12,15×13
B27 11111 0246.009.001 washer 15.3 x 20 x 0.5
B28 11111 0246.008.003 washer 25.3 x 34 x 0.2
B29 11111 0230.107.000 oil seal 13 x 30 x 5.5
000 quantity Sachs 505 Parts Group C
000 AaBCD part number price description
Sachs 505 parts group C
0C1 11111
0C2 11111
0C3 11111
0C4 11111
0C5 11111
0C6 11111
0C7 11111 0000.000.000 drive shaft 77T and 22T
0C8 11111
0C9 11111
C10 11111
C11 11111
C12 11111
C8 505/1 main shaft
C8+C7+C1+C6+C5
000 quantity Sachs 505 Parts Group D
000 AaBCD part number price description
Sachs 505 parts group D
0D1 11111
0D2 11111
0D3 11111
0D4 11111
0D5 11111
0D6 11111
0D7 11111
0D8 11111 0291.021.000 inner cable with 0291.020.000
0D9 11111 0660.018.000 protective cap
D10 11111 0291.024.011 outer casing
D11 11111 0284.016.000 pressure cup
D12 11111 0242.000.000 hex nut M10-1.00
D13 11111 0244.157.000 washer 10 x 29.3 x 4
D14 00100 0244.154.003 washer 24.8 x 44 x 1.7
D14 xxxxx 0244.154.000 washer 24.8 x 44 x 0.5
D14 xxxxx 0244.154.001 washer 24.8 x 44 x 0.8
D14 xxxxx 0244.154.002 washer 24.8 x 44 x 1.0
D14 xxxxx 0244.154.004 washer 24.8 x 44 x 0.2
D14 xxxxx 0244.154.005 washer 24.8 x 44 x 1.2
D14 xxxxx 0244.154.006 washer 24.8 x 44 x 0.3
D15 11311 0258.014.200 internal plate 1.7mm thick
D15 22022 0258.014.201 internal plate 2.5mm thick
D16 22222 0245.122.200 spring washer
D17 22222 0258.015.000 external plate
D18 11111 0258.012.100 clutch hub
D19 11111 0247.141.000 ring
D20 11100 0284.015.000 centrifugal weight assy for A,B
D20 11100 0284.015.000 with tension spring 0239.137.100
D20 00011 0284.015.001 centrifugal weight assy for C,D
D20 00011 0284.015.001 with tension spring 0239.137.101
D21 11111 0258.016.000 clutch plate
D22 22222 0244.112.000 washer 11.9 x 23 x 1
D23 11111 0284.014.000 clutch drum with gear 19T
D24 11111 0232.132.101 bush 11.7 x 16 x 16.5
000 quantity Sachs 505 Parts Group E
000 AaBCD part number price description
Sachs 505 parts group E
0E1 11111 0944.120.004 washer 16.2 x 22 x 0.8
0E2 11111 0247.149.000 bushing 16.3 x 20 x 9.3
0E3 11111 0245.020.001 circlip
0E4 11111 0944 120 002 washer 16.2 x 22 x 1
0E5 11111 0237.106.001 starting wheel
0E6 11111 0237.106.101 pedal shaft with recess for E9
0E6 11111 0237.106.101 for case with or without oil seal
0E6 11111 0285.121.000 pedal shaft assy E3,4,5,6
0E6 11111 0237.106.301 pedal shaft no recess for E9
0E6 11111 0237.106.301 for crankcase with oil seal
0E7 11111 0239.051.001 brake spring
0E8 11111 0252.007.201 driver
0E9 11111 0250.164.000 o-ring 13 x 1.5 use a second one on the
0E6 11111 0250.164.000 clutch side for cases without oil seal
E10 11111 0232.048.302 driver bush with spur gearing
E10 11111 0285.120.200 driver bush assy E10,11,13,14,15
E10 10001 0232.048.203 driver bush without spur gearing
E11 11111 0244.165.000 washer 23.5 x 32 x 1
E12 11111 0250.165.000 sealing ring 19 x 2
E13 11111 0248.153.500 brake lever with two flats
E13 11111 0248.153.400 brake lever with one flat
E14 11111 0244.052.000 retaining tab washer
E15 11111 0242.030.105 hex nut M22-1 Left Thread 20.8 ID
3. Sachs 504/1A, ANL, ADK, B, BS, C – Illustrated Parts List (1978)
A = 504/1A a = 504/1ANL å = 504/1ADK B = 504/1B b = 504/1BS C = 504/1C * = 10 x = as required
000 quantity Sachs 504 Parts Group A
000 AaåBbC part number price description
0
000 quantity Sachs 504 Parts Group B
000 AaåBbC part number price description
0
000 quantity Sachs 504 Parts Group C
000 AaåBbC part number price description
0
Sachs 504 Mainshaft assy 0285-112-001, bare as shown here, $25, or complete except for sprocket, $35, or complete with sprocket and new seal $60.
000 quantity Sachs 504 Parts Group D
000 AaåBbC part number price description
Sachs 504 parts group D
0
4. Speed Versions
Sachs 504/1 and 505/1 Speed Version Info, condensed from factory Parts Manuals
Cylinder part numbers and short codes:
0213.146.230 = 0287.137.134 (0287.137.155 black) “D” says “40 km”, square fins, for 504/1C, D, 505/1C, D
0213.146.215 = 0287.137.119 (0287.137.153 black) “A” says “40 km”, angled fins, for 504/1A, ANL, 505/1A, ANL
0213.146.210 = 0287.137.114 (0287.137.151 black) “B” says “25 km”, angled fins, for 504/1B, BS, 505/1B
0213.146.220 = 0000.000.000 (0000.000.000 black) “E” says “25 km”, angled fins, for 504/1A DK
0000.000.000 = 0000.000.000 (0000.000.000 black) “F” says “25 km”, square fins, for 504/1D NL
Case Set part numbers and short codes:
0000.000.000 = 0287.136.402 (0000.000.000 black) “4A” for 504/1A, ANL, C, D
0000.000.000 = 0287.140.203 (0000.000.000 black) “5A” for 505/1A, ANL, C, D
0000.000.000 = 0287.140.215 (0000.000.000 black) “5D” for 505/1D electronic ignition
0000.000.000 = 0287.136.400 (0000.000.000 black) “4B” for 504/1B, BS
0000.000.000 = 0287.140.200 (0000.000.000 black) “5B” for 505/1B
0000.000.000 = 0287.136.408 (0000.000.000 black) “4E” for 504/1A DK
0000.000.000 = 0000.000.000 “(0000.000.000 black) 00” for 504/1D NL
The engine cases 4B and 5B are intentionally made different so that the A and D cylinders cannot fit. The cylinder studs are farther inward. That is also why a Sachs cylinder base gasket has slots instead of holes, to fit both types.
To convert a B version (25 km) to an A (40 km) you have to change the engine case set, the cylinder, the intake, the clutch plates, the carburetor, the exhaust, and maybe the sprocket(s). That is too many things to be practical.
Clutch Weight-Spring (ws) part numbers and short codes:
- weight-spring 0284.015.000 “A” for 504/1A, B, 505/1A, B
- weight-spring 0284.015.001 “D” for 504/1C, D, 505/1C, D
Nationality: The engines are made in Germany, but are sold in different European countries, as well as North and South America and other places. Each country has it’s own laws about how fast and powerful a moped can be. That is why there are so many different speed versions. In Germany, there are two kinds of mopeds:
Mofas are 25 km/h (16 mph), no licence required, minimum age 15, no passengers. 
“Mofa” is short for motorisertes fahrrad (motorized bicycle).
Mopeds are 40 km/h (25 mph), drivers license required (any class), minimum age 16. “Moped” is short for motor mit pedale (motor with pedals).
This is why Sachs 504 and 505 engine cylinders either say “40km” or “25km”, in the casting.
Where’s the governer? There is not a “governer” yet the speed and power are governed. Several things are intentionally restricted to limit how much air the engine breathes. The cylinder ports open late and close early, the carburetor and intake are small, the exhaust is small. Each thing has about the same influence. Sachs designed it to be tamper-proof, for safety reasons, so unlicensed riders won’t be able to go over 16 mph. No fun intended.
Exhaust header: Different speed versions have different exhaust header pipes. Below the are inner diameters and lengths of the header pipes. The “outer” part of the pipe is the visible part. The “inner” part is hidden inside the tail pipe. Add 2 or 2.5 mm on to the ID to get the OD. So the header that says 26mm is 28 or 28.5 outer diameter.
Version x speed x years x country power carburetor jet cyl case cl. plates ws outer, inner exhaust header ID
504/1C XX00mph 00-00 Spain xx 2.5hp 85/12/104 58 4D 4A 1.7 2.5 2.5 4A 26×400, none
505/1C XX00mph 00-00 Spain xx 2.5hp 85/12/104 58 5D 5A 1.7 2.5 2.5 5A 26×400, none
504/1D XX30mph 80-84 USA xxx 2.0hp 85/12/104 58 4D 4A 1.7 2.5 2.5 4A 26×360,26×100
505/1D XX30mph 80-84 USA xxx 2.0hp 85/12/104 58 5D 5A 1.7 2.5 2.5 5A 26×360,26×100
504/1A AX30mph 74-79 USA xxx 1.8hp 85/12/101 52 4A 4A 1.7 2.5 2.5 4A 26×400,24×200
505/1A XX30mph 74-79 USA xxx 1.8hp 85/12/101 52 5A 5A 1.7 2.5 2.5 5A 26×400,24×200
504/1A NL KTMxx 74-79 Holland 1.7hp 85/12/101 52 4A 4A 1.7 2.5 2.5 4A 20×350,20×250
504/1A NL Sparta 74-79 Holland 1.7hp 85/12/102 50 4A 4A 1.7 2.5 2.5 4A 20×350,20×250
505/1A NL 26mph 74-79 Holland 1.8hp 85/12/101 52 5A 5A 1.7 2.5 2.5 5A 20×350,20×250
504/1A BX 26mph 74-79 Germany 1.5hp 85/12/101 52 4A 4A 1.7 2.5 2.5 4A 20×350,20×250
504/1B AX 20mph 74-84 USA xxx 1.0hp 85/10/101 50 4B 4B 1.7 1.7 1.7 4B 20×350,20×250
505/1B XX 20mph 74-84 USA xxx 1.0hp 85/10/101 50 5B 5B 1.7 1.7 1.7 5B 20×350,20×250
504/1A BX 26mph 74-79 Germany 1.5hp 85/12/101 52 4A 4A 1.7 2.5 2.5 4A 20mm o.d.
504/1B BX 16mph 74-79 Germany 1.3hp 85/10/101 50 4B 4B 1.7 1.7 1.7 4B 20mm o.d.
504/1B SX 00mph 75-79 Sweeden 1.0hp 85/10/101 50 4B 4B 1.7 1.7 1.7 4B 14×400,14×250
504/1A DK 19mph 74-79 Denmark 1.0hp 85/10/103 45 4E 4E 1.7 1.7 1.7 4E 14×400,14×250
504/1D NL 12mph 79-79 Holland 1.0hp 85/10/101 50 4F 4B 1.7 1.7 1.7 4B 14×400,14×250
504/1A CH 00mph 00-00 Switzer. 0.8hp 85/08/101 48 4E 4E 1.7 1.7 1.7 4E 14×400,14×250
5. Factory Manuals
504/1 Service Manuals
3030.8/1 3030.8/2 3030.8/3 3030.8/4
Feb 1974 Nov 1975 Sep 1977 Feb 1979
504/1A0O 504/1A0O 504/1A0O 504/1A0O Germany
504/1ACH 504/1ACH 504/1ACH 504/1ACH Switzerland
504/1ADK 504/1ADK 504/1ADK 504/1ADK Denmark
504/1ANL 504/1ANL 504/1ANL 504/1ANL Netherlands
504/1B0O 504/1B0O 504/1B0O 504/1B0O Germany
000/000O 504/1BSO 504/1BSO 504/1BSO Sweden
000/000O 000/000O 504/1C0O 504/1C0O Spain
000/000O 000/000O 504/1DNL 504/1DNL Netherlands
505/1 Service Manuals
3034.8/1 3034.8/2 3034.8/3 3030.8/4
Feb 1975 Feb 1977 Apr 1980 Feb 1979
505/1A0O 505/1A0O 505/1A0O 505/1A0O Germany
505/1ANL 505/1ANL 505/1ANL 505/1ANL Netherlands
505/1B0O 505/1B0O 505/1B0O 505/1B0O Germany
000/000O 000/000O 505/1C0O 505/1C0O Spain
000/000O 000/000O 505/1D0O 505/1D0O USA
under construction…