Prerequisites For Checking Generator

Electric wiring
to battery and generator as well as grounding strap between engine and body, check that they are tight and in proper condition.

Tension of poly V-belt
check.

Electrolyte density
measure, specification >= 1.24 kg/dm cu.

Charge indicator lamp
check function (see below).

Ignition/glow start Charge indicator
switch in position
0 OFF
1 OFF
2 ON

Commercially available tester
Acidimeter e.g. Hazet