The Schwinn Sting-Ray bicycle was one of the fastest-selling models in the company's more than 100-year history, selling over 600,000 units in the first year of existence. Due to the bike's popularity, the company then launched the Sting-Ray electric bikes and scooters. The scooters, including the S-500 model, operate with a 24-volt battery and can reach up to 15 mph. If you experience any kind of problem with your scooter, it is important to quickly diagnose and correct the issue before continuing use.
Step 1
Take the S-500 scooter to a flat, paved area that is free from regular traffic, such as a parking lot. Attempt to start the scooter as normal. If the motor does not turn over, check its connection to the 24-volt battery. Clean off any corrosion that may be present and inhibiting the battery connection. Check the fuse to see if it is blown and replace if necessary.
Step 2
Place the testing rod of a voltmeter on the terminals of the battery to determine its charge level. A fully charged battery will be at 25 volts or more. Charge the battery if necessary. If the battery is not holding a charge or reacts with low output even when fully charged, the battery must be replaced.
Step 3
Ride the scooter at a slow speed and squeeze the brake lever to check for proper tension. If the bike does not quickly come to a stop when the brakes are engaged, tighten the adjustment barrel on the lever.
Step 4
Inspect the brake pads on the Schwinn S-500 disc brakes and replace them if they are worn down. If the pads are not centered on the disc, tighten the center bolt on the housing to align them properly. Each pad should be within 1 or 2 mm of the braking disc. Clean the brake system with rubbing alcohol if excessive dirt is present. Inspect the brake cables for any bends, rust or stretching that may be causing excessive play in the brakes. Replace if necessary.
Step 5
Ride the S-500 at a slow speed and watch the front wheel for any wobbling. If you notice wobbling, check the hub bearing for looseness or collapse. If the hub appears to be operating correctly, the headset is loose, the axle is broken or the wheel is out of true.
Step 6
Apply the throttle to reach a quick but controlled speed. Note if the throttle is too sensitive or slow to respond. Inspect the throttle cable for proper tension and excessive wear. Replace the cable is necessary.
Step 7
Inspect the tires for worn tread if you are regularly experiencing flats. Remove the tire and inspect the inner tube for similar wear in the rubber. Check the wheel groove for spokes that may be too long and puncturing the inner tube. Replace the parts as necessary.
Things You'll Need
- Voltmeter
- Open end wrenches
- Allen wrenches
- Phillips head screwdriver
- Flat head screwdriver
- Tire gauge and pump
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