Ryobi RG-2100I Owner's Operating Manual page 13

DC BATTERY CHARGING FUNCTION
This function is applicable to 12V battery charging
only.
Disconnect the leads from the battery.
Loosen the vents on the battery.
Make sure the battery fluid level is correct
Using a hydrometer measure the specific gravity of
the battery fluid and calculate the charging time in
accordance with the table shown, Fig 12.
Fig. 12
Attach the 12v charging leads to the battery
observing correct polarity (Red = + Positive)
(black = - Negative).
Plug the 12v charger lead into the socket on the
generator, Fig 13.
The specific gravity for the fully charged battery
shall be within 1.26 to 1.28. It is advisable to check
the specific gravity every hour.
OPERATION
12V DC Socket
LOW OIL LEVEL INDICATOR LIGHT
If the oil level in the motor sump drops to a
dangerously low level then the oil light, yellow, will
flicker and the generator will automatically stop.
If the oil level in the motor sump is dangerously
low, then the generator will not start, however the
low oil light, yellow, will flicker only when the recoil
starter is pulled.
If your generator will not start always check the oil
level first.
To add oil or check the oil level, refer page 8.
OVERLOAD INDICTOR LIGHT
This indicator light is on when the generator is
overloaded, check attached products power, refer
to page 11.
When the overload indicator is on and there is no
output power at socket you can press the "engine
restart" button to quickly restart the engine, Fig.14.
Engine restart
button
13
Fig. 13
Fig. 14