According to the Clymer manual readings as below (CB500F/550F) -
Field coil (white wire to green wire) the reading should be 4.6 to 5.0 ohms.
Stator windings (3 x yellow wires) readings between each yellow wire 0.35 +/- 10%
Obtaining an accurate reading (0hms) of the stator windings can be problematic due to dirty contacts and cheaper end resistance meters.
Ask Steve if you can borrow his AVO meter