
BATTERY
All lead-acid storage batteries discharge when not in 
use. Refer to specific instructions and warnings that 
accompany the battery. If such information is not 
available, observe the following precautions when 
handling a battery:
•  DO NOT use jumper cables and a booster battery 
to crank or start the generator engine.
• DO NOT recharge a weak battery while it is 
installed in the generator. Remove battery from 
generator and recharge in a well-ventilated area, 
away from fuel vapors, sparks, heat or flames.
• Battery electrolyte fluid is an extremely caustic 
sulfuric solution that can cause severe burns. DO 
NOT permit fluid to contact eyes, skin, clothing, 
painted surfaces, wiring insulation, etc. If any bat-
tery fluid is spilled, flush the affected area with 
clear water immediately.
• Always wear safety glasses, rubber apron and 
gloves when handling a battery.
• Batteries give off explosive hydrogen gas while 
charging. The gas can form an explosive mixture 
around the battery for several hours after charging. 
Any spark, heat or flames can ignite the gas and 
cause an explosion which can shatter the battery, 
causing blindness or other serious injury.
BATTERY MAINTENANCE
The battery should be inspected per the “Service 
Schedule” section. The following procedure should 
be followed for inspection:
1.  Inspect the battery posts and cables for tightness 
and corrosion. Tighten and clean as necessary.
2.  Check the battery fluid level of unsealed batteries 
and, if necessary, fill with DISTILLED WATER 
ONLY. DO NOT USE TAP WATER IN BATTER-
IES.
3.  Have the state of charge and condition checked. 
This should be done with an automotive-type bat-
tery hydrometer. 
DANGER
  Storage batteries give off explosive hydrogen 
gas. This gas can form an explosive mixture 
around the battery for several hours after charg-
ing. The slightest spark can ignite the gas and 
cause an explosion. Such an explosion can shat-
ter the battery and cause blindness or other 
injury. Any area that houses a storage battery 
must be properly ventilated. Do not allow smok-
ing, open flame, sparks or any spark producing 
tools or equipment near the battery.
  Battery electrolyte fluid is an extremely caus-
tic sulfuric acid solution that can cause severe 
burns. Do not permit fluid to contact eyes, skin, 
clothing, painted surfaces, etc. Wear protective 
goggles, protective clothing and gloves when 
handling a battery. If the fluid is spilled, flush 
the affected area immediately with clear water.
  Do not use any jumper cables or booster battery 
to crank and start the generator engine. If the 
battery has completely discharged, remove it 
from the generator for recharging. 
  Be sure the AUTO/OFF/MANUAL switch is set to 
the OFF position before connecting the battery 
cables. If the switch is set to AUTO or MANUAL, 
the generator can crank and start as soon as the 
battery cables are connected.
  Be sure the 120VAC power supply to the battery 
is turned OFF, or sparking may occur at the bat-
tery posts as the cables are attached and cause 
an explosion.
BATTERY REPLACEMENT
When replacing batteries, use the same number and 
the type of battery that follows:
NOTE:
The BCI number should be located directly on the 
battery.
REPAIR PARTS
The latter portion of this manual consists of exploded 
views, parts lists and electrical data pertaining to this 
generator set. The parts lists consist of (a) an item 
number, (b) a part number, (c) the quantity required, 
and (d) a description of the part. The item number 
corresponds to an identical number on the exploded 
view drawing.
  BCI Group No.  CCA
  24F-6  525 @ 0 deg. F
Standby Generator Sets
Maintenance
10-4
Maint004  Rev. 0  08/05