SOHC.co.uk Forums > CB500/550
Charging
Ewan 500 K1:
see "charging system test" page 124 -129 clymer 350-550cc fours manual. I followed that and found that the stator coil was duff. Replaced stator with one that tested kay and everything been fine since
Bryanj:
The confused part is all explained by the word Clymer mate
Yoshi823:
A suspicious alternator stator is quite easy to test.With a multimeter set to ac volts measure across any two yellow wires & you should measure about 25vac. If you were only getting about half that or none at all from that pair it would be easy to check across an adjacent pair of yellow wire & to isolate exactly which winding was open circuit. As the standard bikes have a seperate rectifier to the regulator these are also easy to test.
I have come across corroded points inside of the OEM regulator case in the past. Just polish these up with a points file & they're good to go. The points gaps are specified in the manuals. I do a final setup using a voltage supply with a multimeter hooked up to the output. The adjusting screw which sets the regulated output voltage is then easily set.
Ewan 500 K1:
--- Quote from: Bryanj on September 14, 2012, 08:21:39 AM ---The confused part is all explained by the word Clymer mate
--- End quote ---
you mean Clymer talk S**T ? :-X
Haynes quotes similar alernator out v's revs for "nighttime " running of a 400/4 ... but does not that there is zero alternator output until 3000rpm under "daytime" conditions. Clymer for daytime claim 6.5amps at 1000rpm "daytime" , dropping to zero amps at 2000rpm , then picking up again at 3000rpm
SteveD CB500K0:
That's probably a typo...
Glenn has the numbers here: http://www.sohc4.net/index.php/chargingsystem-2/
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