Question about Motorcycles
Being a 1970 vehicle you have the older copper oxide rectifier,if you have charging problems,that type of rectifier output usually drops to about 1/2 battery voltage. It is located under the seat between the back fender and the bottom bar that the seat rests on,also more often than not, you get a really strong odor of rotten egg smell from a defective copper-oxide rectifier. Solution, replace with a 6-10 amp bridge rectifier from Radio Shack. Your charging voltage should be in the range of 13.8 -14v@ 1500 rpm.
Posted on Dec 04, 2012
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Posted on Jan 02, 2017
SOURCE: Gsf400 bandit wont charge
If the battery is 2 years old or more it may be bad. Add water to each battery cell so that the plates are covered by the water. Charge the battery with a 1amp or 2 amp charger for about 5 hours. If it will not hold a charge then replace the battery.
At the site below you can download a free PDF service manual for your bike. The manual will tell you how to check the electrical components. It will tell you how to rebuild the engine as well, but save the rebuilding until next month. :)
Please rate this answer. Thanks spooner1401!
Posted on Apr 17, 2009
your voltage/reg. can be tested in a couple different ways check ground res. check res. then revs. bias on diodes you have ac in dc out it sounds like you may have a diode gone bad allowing ac curent to flow causing the wires to get hot
Posted on Jul 31, 2009
I had the same problem with my 900 that I just bought, the regulator was fried, so the local kaw shop replaced it with a new one off internet, then it promptly fried the new one, upon further investigation the rotor/armature was reading 1 ohm resistance, supposed toread 4/7 i think anyway, had to have alternater rebuilt , cost 370.00 , works fine now.
Posted on Aug 06, 2009
It does not have an oil filter like what you are thinking of. It has a centrifugal oil filter. On the right end of the crankshaft there is a conical rotor. It turns with the crank and dirt particles get thrown to the inside wall of the rotor. The dirt builds up there and is cleaned out with a screwdriver, knife, small scraper, whatever. You will think you are destroying some type of gasket but dirt is all it is. You may need to remove the right side case for full access. I can't remember for sure.Go to www.babbittsonline.com/parts/viewbybrand/parts.aspx for diagrams and parts as available. Please rate my answer.
Posted on Feb 21, 2010
Testimonial: "Perfect, I spent the day figuring it out without having to purchase a repair manual. Thanks for the info and picture!"
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