Part No. 62756
Genie S-120 & Genie S-125
13
Operator's Manual
First Edition · Fourth Printing
MAINTENANCE
Check the Batteries
Proper battery condition is essential to good engine
performance and operational safety. Improper fluid
levels or damaged cables and connections can
result in engine component damage and hazardous
conditions.
Electrocution hazard. Contact with
hot or live circuits may result in
death or serious injury. Remove all
rings, watches and other jewelry.
Bodily injury hazard. Batteries
contain acid. Avoid spilling or
contacting battery acid. Neutralize
battery acid spills with baking soda
and water.
1 Put on protective clothing and eye wear.
2 Be sure that the battery cable connections are
free of corrosion.
3 Be sure that the battery hold downs and cable
connections are tight.
4 Remove the battery vent caps.
5 Check the battery acid level. If needed,
replenish with distilled water to the bottom of the
battery fill tube. Do not overfill.
6 Install the vent caps.
Adding terminal protectors and a
corrosion preventative sealant will
help eliminate corrosion on the
battery terminals and cables.
Perkins 1004-42 Engine
8.9 quarts
Oil capacity (including filter)
8.4 liters
Perkins 1004-42 Engine Oil viscosity
requirements
below 32°F / 0°C
0W
-13°F to 68°F / -25°C to 20°C
5W-20
10°F to 104°F / -12°C to 40°C
10W-30
14°F to 122°F / -10°C to 50°C
15W-40
above 23°F / -5°C
20W-50
Engine oil should have properties of API classification
CF4 grade.
Check the Hydraulic Oil Level
Maintaining the hydraulic oil at the proper level is
essential to machine operation. Improper hydraulic
oil levels can damage hydraulic components. Daily
checks allow the inspector to identify changes in oil
level that might indicate the presence of hydraulic
system problems.
1 Be sure that the boom is in the stowed position,
then visually inspect the sight gauge located on
the side of the hydraulic oil tank.
Result: The hydraulic oil level should be within
the top 2 inches (5 cm) of the sight gauge.
Hydraulic oil specifications
Hydraulic oil type
Dexron equivalent
Tank capacity
55 gallons
208 liters
Hydraulic system
65 gallons
246 liters
(including tank)