The place to search for information about the Sachs 301 wheelhubengine as used on the
Spartamet ®, Saxonette ® and Rabbit ®.
Maintenance, revision and drawings.
| When having starting problems the first thing to check is the ignition system. When this checks out O.K. the next item on the list of problem causes is the carburettor. |
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| The first test is to remove the spark plug from the cylinder and holding it to a piece of bare metal and while pulling the cord check if there is a spark. With the original sparkplug the spark is very weak and hard to see in the daylight. Using another sparkplug without resistor or holding only the sparkplug cap near the metal gives better results. Using only the cap should produce sparks of 10 - 15 mm. |
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The second test is measuring yhe resistance of the coil with an Ohm-meter. 1 = Electronic ignition module (CDI) The E-start coil has an extra connector for charging the battery. There are two types of coil and they measure different.
When the red and blue wires are connected the wrong way there will be no spark but no damage to the CDI or Coil will occur. The connections are marked on top of the CDI Measurements for MOTOPLAT wire b to Metal core = 100-150 Ohm cap to metal core = 2750 Ohm Measurements for PRUFREX wire b to wire c = 800-1000 Ohm wire b to wire a = 800-1000 Ohm cap to wire a = 2750 Ohm |
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| The third and last test is changing parts with an good working engine because of the CDI nothing can be measured. | |||||||||
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Last update: 17-06-2008
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