Sachs MadAss 125 - Speedometer Issues & Key Blanks

Matt Letki /
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Hi All,

New to the Community - Nice to meet you all!

I recently picked-up a Sachs MadAss 125cc. The Speedometer turns on, but does not register any speed while driving.

Noting that the speedo has a space for a single Coin-style battery (no battery was installed). In the repair manuals that I can find (older years) two LR44 batteries are listed as the battery, but this is not correct for this bike as this one takes one larger battery. I tried a 3v coin battery (CR2016), but it didn't help, or really seem to do anything... Wondering if anyone knows the correct battery size for the stock speedo...?

Also, does anyone know what style / type of key this bike takes? I have one Key and cannot find a spare. I know that these are Chinese manufactured bikes, but no idea which type of key / cross-compatibility with other brands.

Thanks All!

Cheers!

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