Motorcycle Repair: Rectifier honda 1972 cl175 K6, honda cl175, fuse holder

Question
Hey Bill,
My bike is having a charging issue. I bought a new battery. Put it in the bike, and it fired up strong. It will run for about two minutes and then die. Charge the battery back up, try it again and the same thing happens. After 2mins, The bike dies & the tach neutral light indicator dies too. I tested the little silver box looking 12 volt regulator with a continuity meter meter and it tests ok. Checked for continuity between the yellow lead and green, and yellow to ground (black wire?) No continuity existed. Does my bike have a rectifier too? Or does the silver box do the rectifier job too? Also how do I test the a/c generator? =JB=
Part photo:
http://www.cmsnl.com/honda-cl175-scrambler-175-k6-usa_model543/pointless_3140029

Answer
James, the rectifier is mounted under the frame, as I recall.  Probably the source of your non-charging issues.

http://www.cmsnl.com/honda-cl175-scrambler-175-k6-usa_model543/partslist/F23.htm
#4

The little silver box is a current regulator to keep excess charging output from overcharging the battery and blowing out the light bulbs. You might try disconnecting it and testing again. Use a voltmeter to watch battery voltage at the terminals as it revs up.

A fully-charged, load-tested battery should last more than 2 minutes in the bike with engine running.

Make sure that your fuse/fuse holder are all in good shape. Sometimes the fuses crack and open up even though they look okay. The fuse holder ends must keep a tight grip on the fuse, as well.

There are troubleshooting charts at www.electrosport.com

Wiring diagrams at: http://oldmanhonda.com/MC/WiringDiagrams/MCwiring.php

Bill Silver