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BLEEDING THE FUEL SYSTEM
The fuel system for this engine has a self-bleeding func-
tion, so air should not enter the fuel lines unless the
engine has been disassembled for any reason. Bleeding
air from the fuel system involves manually actuating the
fuel lift pump.
PERIODIC MAINTENANCE LIST
The following maintenance tasks should be performed
by an authorized service facility at these periodic inter-
vals.
DAILY
• Check engine oil and coolant level.
• Check air cleaner dust valve & restriction indicator,
replace filter (as required).
• Visual Walk around inspection.
• Inspect AC power cables and cord sets.
EVERY 50 HOURS OR 2 WEEKS
• Check fuel filter.
EVERY 250 HOURS
• Check battery state-of-charge and condition, service
as necessary.
• Change engine oil and replace filter.**
**Change the oil for the first time after 100 hours
maximum of (break-in) operation, then every 250
hours thereafter.
EVERY 600 HOURS OR 12 MONTHS
• Clean crankcase vent tube.
• Check air intake hoses, connections & system.
• Replace spin-on fuel filters.
• Check automatic belt tensioner and belt wear.
• Check cooling system.
• Coolant Solution analysis-add SCAs as needed.
EVERY 1200 HOURS OR 24 MONTHS
• Adjust droop on generator set engine.
• Pressure test cooling system.
• Flush cooling system.
• Check operation of engine protective devices (low
oil pressure, high coolant temperature, overspeed).
**Contact your nearest Generac/Guardian Authorized Dealer for assistance.
Maintenance
GR-210 Generator Set
EVERY 2000 HOURS
• Check and adjust engine valve clearance.
• Retorque engine intake manifold bolts.
• Retorque engine exhaust manifold bolts.
• Check injection timing.
• Check/inspect injection nozzles.
• Check engine compression pressure.
ADJUSTMENT OF FUEL
INJECTION TIMING
A diesel engine does not have an electrical ignition sys-
tem like those used on gaseous or gasoline-fueled
engines. The diesel fuel is ignited by the heat of com-
pression when the piston moves upward on its com-
pression stroke. The engine firing is timed by precisely
timing the injection of fuel into each cylinder at the
proper moment. If the unit's injection system appears to
be "out of time," have the engine checked and adjusted
by an authorized diesel engine service facility. Do not
attempt to adjust ignition timing without proper tools,
test equipment and general knowledge of the product.
ENGINE SPEED ADJUSTMENT
The engine speed is controlled either with a mechanical
governor or electronically.
The mechanical, fixed speed governor is part of the fuel
injection pump. The governor was factory set to main-
tain 62 Hertz (1860 RPM) with no electrical loads
applied. Under full rated wattage/amperage capacity,
frequency may droop to about 59-60 Hertz.
The electronic governor has a solid-state design for the
controller circuit board and actuator. This design
results in fast, stable engine response to load
changes.The controller board was factory set to main-
tain the unit's rated speed of 1800 rpm to achieve a fre-
quency of 60 Hertz.
If the engine speed controller on the generator needs
adjusting, contact an authorized service facility. They
will have the proper equipment and trained personnel
to complete all necessary adjustments.
Generac
Power Systems, Inc. 17
®
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