MOTORCYCLE TECH TIP
by the crew at AMP Customs
“New Owners”


Summer heat means battery trouble.

First, people ride less frequently. This causes the battery to lose charge by sitting in the heat without being restored by your charging system. If you only ride occasionally, I would highly suggest a Battery Tender to keep your bike ready at all times. Most common problems on motorcycles can generally be solved through proper maintenance. For instance, if you have any aftermarket electrical components on your bike with more than the usual amount of connectors running to your battery, be sure to run the proper length bolt with a star washer to prevent damage to the battery terminal or cause a loose connection. Proper wire routing is also key, so that no electrical shorts are created by vibrations. If you run an old style battery, be sure to check your fluid levels frequently. Discharge of battery fluid could be a tell-tale sign of overcharging or regulator/rectifier problems. Also I would recommend upgrading to a “maintenance free” battery which is more durable, less hassle and also comes with a warranty.

A few checks with a voltmeter (in Volts DC setting) can help determine that your electrical system is functioning properly. Voltage across the battery terminals should be 12.5-13.0 VDC. When the key switch is turned on battery voltage shouldn’t drop more than 1VDC. If it does, your battery’s surface charge may be good but the battery’s core may be weakening and not able to handle load. If your voltage drops below 7 VDC when you hit the start button, it’s probably time to replace the battery also. Check your charging system’s output by holding the your meter leads across the battery terminals and revving the engine to around 2500-3000 RPM your meter should read between 13.5-15.0 VDC.

AMP Customs for any service or questions 602-942-2423
Stop in and tell’m Kimmy and Kelly Sent Ya!

AMP Custom Motorcycle
2526 W. Morningside Dr.
Phoenix, AZ 85023
602-942-2423
www.ampcycles.com