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• Never operate the engine with oil below the cross-
hatching on dipstick.
• Never overfill the engine crankcase above the dip-
stick crosshatching.
• To check oil level, remove dipstick and wipe dry
with a clean cloth. Then, re-insert dipstick into dip-
stick tube and remove again. Oil should be between
the top of the crosshatching and "ADD" marks. Add
oil as required.
ENGINE COOLANT
Maintaining adequate concentrations of glycol and
inhibiting additives in the coolant is critical to protect
the engine and cooling system against freezing, corro-
sion, and cylinder liner erosion and pitting.
Test the coolant solution at 600 hours or 12 month
intervals and whenever excessive coolant is lost through
leaks or overheating to ensure the necessary protection.
If coolant level in radiator or recovery bottle is low, pro-
ceed as follows:
• Inspect the radiator cap gasket for wear or damage.
Replace cap, if necessary.
• Have the radiator pressure cap tested at an auto-
motive repair facility or at an authorized Generac
service facility.
• Check cooling system hoses and radiator for leaks.
When working properly, the coolant recovery sys-
tem keeps the radiator coolant at the proper level.
The radiator cap is equipped with both a pressure
relief and a vacuum relief valve. When hot radiator
coolant expands, excess coolant opens the pres-
sure relief valve and drains into the coolant recov-
ery bottle. After shutdown, as coolant mixture in
the radiator cools, it contracts to form a vacuum.
The vacuum relief valve then opens, to draw
coolant from the recovery bottle and return it to
the radiator. The coolant recovery bottle must be
kept filled to the proper level to maintain radiator
coolant at the proper level.
FUEL
Check fuel quantity at least once daily (every eight
hours) and prior to use. The base-mounted fuel tank is
equipped with a float operated fuel level gauge. Fill tank
when level is between half full and 1/4 full.
16 Generac
Power Systems, Inc.
®
Maintenance
GR-210 Generator Set
NOTE:
IMPORTANT:
NEVER PERMIT THE ENGINE TO RUN OUT OF
FUEL. IF ENGINE RUNS OUT OF FUEL OR IF FUEL
LEVEL IN TANK DROPS TOO LOW, AIR WILL
ENTER FUEL SYSTEM LINES AND CAUSE SERIOUS
PROBLEMS, SUCH AS HARD STARTING AND
ROUGH, ERRATIC OPERATION. YOU MUST BLEED
THE ENGINE FUEL SYSTEM WHEN IT RUNS OUT
OF FUEL.
OWNER/OPERATOR PERIODIC
MAINTENANCE
Some maintenance tasks may be beyond the capability
of the owner/operator and should be accomplished by a
competent,
qualified
owner/operator may accomplish the following:
• Check the engine oil level once daily; more often
during the 100-hour break in period.
• Check the tire pressure before using and at least
once each week thereafter. Keep the tires properly
inflated according to tire specifications.
equipped)
• Inspect entire fuel system once each month. Look
for leaks, damage, loose lines, etc.
• Inspect engine drive belts prior to initial use and
once each month thereafter. Replace any belt that is
worn, cracked weathered, or otherwise damaged.
Check and adjust belt tension. Consider tension
correct when applying thumb pressure midway
between pulleys causes a belt deflection of about 3/8
to 3/4 inch.
• Check battery electrolyte fluid level once each week.
Add distilled water, if needed. Also inspect battery
posts, cables and terminals for tightness, cleanli-
ness, corrosion. Clean and tighten as required.
• Drain water and sediment from the optional spin-on
fuel filter once each week (if so equipped).
• Start and exercise the unit at least once each week.
Run the engine for at least 30 minutes during this
exercise period.
• Keep the unit clean and as dry as possible. Use a
mild detergent and water to clean exterior surfaces.
Areas with paint damage should be cleaned, dried
and repainted as necessary. An automotive type of
paint may be used on the outside of the compart-
ment.
service
technician.
The
(If so
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