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Manual

Below is a step-by-step plan on how to convert a Tomos with standard electric ignition (4 coils) from "snor" to "brom" mode. Note: this adjustment only works for ignitions without Pick-up, The pick-up is a black block at the bottom right against your flywheel.

On the crankcase next to the ignition plate are 2 stripes, these stripes are for "snor" and "brom" position. A 25 km/h Tomos defaults to "snor" mode (bottom line). If you want to go faster, e.g. because you want to convert your Tomos to a 45 km/h "brom" setup or even faster you will have to set the ignition even further.

Note:

  • If an aftermarket electric ignition is fitted, the base plate may not have a marking!
  • If the Tomos motor has completely standard 25 km/h specifications then there is no point in following these steps. First make sure you have done the necessary modifications (see blog post on differences between "snor" and "brom")

The supplies needed to convert the ignition are besides standard tools:

Follow the steps

First remove the flywheel cover / kickstarter cover so that the flywheel is visible. You do this by loosening a couple of socket screws, removing the Kickstarter and then taking off the cover

Unscrew your spark plug from the head and screw your piston stop into this. (not shown) Carefully turn your flywheel counterclockwise until you can't turn it any further. Turn. The piston is now against the piston stop, which will allow you to apply force to the flywheel puller in the next step to remove the flywheel. First, take a socket spanner 10 and unscrew the crank nut (not shown). Now that you have done this, you can turn the flywheel puller into the flywheel by hand. 

Now turn the bolt on the flywheel puller with a ring spanner or socket spanner. The flywheel will then come off the crankshaft. Carefully put the flywheel away with the magnets facing up.

Now that your flywheel is off, you can see the ignition with its four coils. The base plate of the ignition is fastened with two bolts, which are often socket or crosshead bolts . These need to be loosened a little.  

If you now look to the left of the baseplate, you will see 2 stripes and a mark on the baseplate.

The bottom line on the crankcase is the mark for the "snor" (25 km/h) position. The upper line is the marking for the "brom" (45 km/h) position. The mark on the baseplate of the ignition indicates the position. By turning the baseplate clockwise, you can determine the ignition position. The adjustment is quite precise, a small turn can give results. So turn a little bit and then test the adjustment.

After testing the adjustments, you can repeat the steps again until you achieve the desired result. Please note, do this with care. We are not responsible for any damages.

What parts do I need?

Want to convert your 25 km/h moped Tomos to a 45 km/h moped Tomos? Check out what you need here.

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