A few weeks ago, the battery in my scooter went flat for the second time in six months. I was able to recharge it with a plug-in charger, so I figured there had to be something preventing the battery from charging.
Some research on the
Scooter Community forums indicated that the
regulator rectifier often fails on this model, leading to progressive loss of charging as well as unreliable starting.
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| Daelim S1 Charging System |
The Daelim
service manual shows how to remove and test the regulator, so I pulled it out and found that the resistances were all wrong. Voltage was leaking through and discharging the battery, so I ordered a new regulator from the dealer.
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| Standard regulator (left) and upgraded one (right) |
The new regulator is much bigger than the old one, with a heavier heatsink. This should make the new one less likely to overheat.
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| Standard bolt (left) and new one (right) |
To fit the bigger heatsink, the standard bolts need to be replaced with longer ones. The new bolts are metric 6 x 25mm hex-head bolts, zinc plated.
The regulator mounts to the same location, with the bolts attached to threads on the scooter frame. Besides the longer bolts, nothing needs to be moved or modified.
The wires pass behind the frame and connect to these two plugs on the right-hand side of the scooter.
Since replacing the regulator, the battery is keeping its charge and I can rely on getting started in the morning. As long as you have a decent tool kit and refer to the service manual, this should be an easy home repair.
