Section 4 — Maintenance
Centurion
Figure 3.3 - Engine Block Heater
Refer to applicable wiring diagram(s) and electrical schematic(s) at back of manual for wiring connections. Customer supplies a 120V 15A Utility fed circuit for the block heater.
F. EVERY 800 OPERATING HOURS
1.Retorque cylinder head. (See Section 1.13, “Torque Specs”.)
2.Retorque intake and exhaust manifold. (See Section 1.13, “Torque Specs”.)
3.Check engine compression.
4.Check valve clearance.
4.2COOLING SYSTEM
Air intake and outlet openings in the generator compartment must be open and unobstructed for continued proper operation. This includes high grass, weeds, brush, leaves and snow.
Without sufficient cooling and ventilating air flow, the engine/generator quickly overheats, which causes it to shut down. (See Section 7 for installation diagram and vent locations.)
4.1MAINTENANCE PERFORMED BY AUTHORIZED SERVICE FACILITIES
A. EVERY THREE MONTHS
1.Check battery state of charge and condition.
2.Inspect and test fuel system.
3.Check transfer switch.
4.Inspect exhaust system.
5.Check engine ignition system.
6.Check fan belts.
B. ONCE EVERY SIX MONTHS
1.Test Engine Safety Devices (low oil pressure, low coolant level, high coolant temperature).
C. ONCE ANNUALLY
1.Test engine governor; adjust or repair, if needed.
2.Clean, inspect generator.
3.Flush cooling system.
D. FIRST 100 OPERATING HOURS
1.Change engine oil and oil filter. (After initial change, service engine oil and filter at 150 operating hours or six months, whichever comes first.)
2.Retorque cylinder head. (See Section 1.13, “Torque Specs”.)
3.Retorque intake and exhaust manifold. (See Section 1.13, “Torque Specs”.)
E. EVERY 500 OPERATING HOURS
1.Service air cleaner.
2.Check starter.
3.Check engine DC alternator.
The exhaust system parts from this product get extremely hot and remains hot after shutdown. High grass, weeds, brush, leaves, etc. must remain clear of the exhaust. Such materials may ignite and burn from the heat of the exhaust system.
4.3OVERLOAD PROTECTION FOR
ENGINE DC ELECTRICAL SYSTEM
Engine cranking, start up and running are controlled by a solid state Engine Controller circuit board. Battery voltage is delivered to that circuit board via a 15 amp fuse. These overcurrent protection devices will open if the circuit is overloaded.
If a circuit breaker opens or a fuse element
!melts, find the cause of the overload before resetting the circuit breaker or replacing the fuse.
4.4CHECKING FLUID LEVELS
4.4.1 CHECK ENGINE OIL
Check engine crankcase oil level (Figure 4.1) at least every 20 hours of operation, or prior to use.
•Remove oil dipstick and wipe dry with a clean,
•Install oil dipstick, then remove again.
•Oil should be between FULL and ADD marks.
•If oil level is below the dipstick ADD mark, remove oil fill cap. Add the recommended oil to bring oil level up to the FULL mark. DO NOT FILL ABOVE THE “FULL” MARK. See Section 1.14 for
recommended oils.
Generac® Power Systems, Inc. 15
