Centurion 04791-0 Owner'S Manual And Installation Instructions Download Page 19

Generac

®

Power Systems, Inc.

17

6. Start the unit by depressing and holding the

EXERCISE switch on the Power Transfer Monitor
for about ten seconds. Allow the unit to run for
exercise cycle.

7. Re-plug items needing protection back into the

Power Transfer Monitor’s switched GFCI outlet.

8. The generator is now ready for service.

3.11 ADJUSTING VALVE CLEARANCE

After the first six months, adjust the valve clearance
in the engine.

When adjusting valve clearance, the engine should be
at outdoor ambient temperature and the piston
should be at Top Dead Center (TDC) of its compres-
sion stroke (both valves closed). Correct clearance is
0.001-0.003 inch (0.03-0.07mm). Adjust valve clear-
ance as follows:

1. Loosen the rocker arm jam nut. Use an allen

wrench to turn the pivot ball stud while checking
clearance between the rocker arm and the valve
stem with a feeler gauge (Figure 3.6).

Figure 3.6 — Adjusting Valve Clearance

2. When valve clearance is correct, hold the pivot

ball stud with the allen wrench and tighten the
rocker arm jam nut with a crows foot. Tighten the
jam nut to 65-85 inch-pounds torque. After tight-
ening the jam nut, recheck valve clearance to
make sure it did not change (Figure 3.7).

Figure 3.7 — Tightening Jam Nut

3.12 GENERATOR SERVICE INTERVAL

CENTURION 3500

Annually ................................Clean Spark Arrestor

Annually..............................Change Engine Oil/filter

Every Six Months........................Clean Air Pre-filter

Annually....................................Inspect Spark Plugs

Annually................Replace Paper Air Filter Element

As Needed ................................Replace  Spark  Plugs

1st Six Months

Annually ..............................Adjust Valve Clearance

Section 3 – Maintenance

CENTURION 3500 Home Standby Generator

Summary of Contents for 04791-0

Page 1: ...0 Air cooled Prepackaged Automatic Standby Generator Model 04791 0 3 4kW LP Not intended for use as Primary Power in place of utility or in life support applications This manual should remain with the...

Page 2: ...personal safety and or property of others This symbol points out potential explosion haz ard This symbol points out potential fire hazard This symbol points out potential electrical shock hazard CONT...

Page 3: ...ne Oil Level 12 3 2 Changing the Engine Oil and or Oil Filter 12 3 3 Maintaining the Engine Air Cleaner 13 3 4 Clean Air Intake 14 3 5 Checking the Engine Spark Plug 14 3 6 Clean Spark Arrestor 14 3 7...

Page 4: ...hing muscles e throbbing temples f dizziness g headaches h weakness and i sleepiness IF EXPERIENCING ANY OF THESE SYMPTOMS MOVE INTO FRESH AIR IMMEDI ATELY IF SYMPTOMS PERSIST GET MEDICAL HELP Shut do...

Page 5: ...ved or disassembled during routine mainte nance If the grounding conductor must be replaced use only a flexible conductor that is of No 12 American Wire Gauge AWG copper wire minimum In case of accide...

Page 6: ...Brace 19 Exhaust Hood Tailpipe and Spark Arrestor Inside 20 Ground Lug 21 Data Decal Located inside compartment Section 1 General Information CENTURION 3500 Home Standby Generator Please record the fo...

Page 7: ...utlet is powered by the utility and by the gen erator When utility power is present is acts as anoth er normal household outlet When the generator is supplying power this outlet is then being supplied...

Page 8: ...air is always available Consider these factors Install the unit where air inlet and outlet openings will not become obstructed by leaves grass snow etc If prevailing winds will cause blowing or drift...

Page 9: ...allows the user the abili ty to start and exercise the generator from the remote Power Transfer Monitor 2 1 2 2 Off Position This switch position shuts down the engine This position also prevents the...

Page 10: ...nerator set inside any enclosed area make sure THE EXHAUST SYSTEM IS not LEAKING AND HAS NOT BEEN DAMAGED SYMPTOMS OF CARBON MONOX IDE POISONING ARE a inability to think coher ently b nausea c vomitin...

Page 11: ...be washed down with an acid neutralizing agent A common practice is to use a solution of one pound 500 grams bicarbon ate of soda to one gallon 4 liters or water The bicarbonate of soda solution is t...

Page 12: ...n the Power Transfer Monitor should have power Confirm trans fer of power by depressing the test buttons on both GFCI outlets Each one should trip and the indicator will illuminate With the generator...

Page 13: ...mage by shutting it down if it happens to run faster than the preset limit This protection also prevents the gener ator from supplying an output that could potentially damage appliances connected to t...

Page 14: ...IN CHECK UP After the break in period the owner should perform the following maintenance items Change the engine crankcase oil and oil filter Check the oil level Inspect the cooling and ventilation op...

Page 15: ...e new filter Fill the filter until saturated with clean oil 6 Screw the new filter on by hand until its gasket lightly contacts the oil filter adapter Then tight en the filter an additional 3 4 to one...

Page 16: ...ns Use the following procedure Figure 3 2 1 Follow steps 1 3 in Section 3 3 1 service the foam precleaner if necessary 2 Remove the paper filter 3 Clean the air filter by tapping it gently on a solid...

Page 17: ...NTENANCE All lead acid batteries will discharge when not in use The generator battery should be inspected as follows 3 8 1 EVERY SIX MONTHS Inspect the battery posts and cables for tightness and corro...

Page 18: ...cise approximately 1 5 minutes for every second that the starter motor cranks during engine start up The unit will run for a minimum of two minutes and a maximum of 20 minutes based on the crank time...

Page 19: ...1 Loosen the rocker arm jam nut Use an allen wrench to turn the pivot ball stud while checking clearance between the rocker arm and the valve stem with a feeler gauge Figure 3 6 Figure 3 6 Adjusting...

Page 20: ...18 Generac Power Systems Inc PART II INSTALLATION INSTRUCTIONS ONLY QUALIFIED ELECTRICIANS OR CONTRACTORS SHOULD ATTEMPT INSTALLATION DANGER...

Page 21: ...IST GET MEDICAL HELP Shut down the generator and do not operate it until it has been inspected and repaired The engine exhaust fumes contain carbon monox ide which can be DEADLY This dangerous gas if...

Page 22: ...ch so as to isolate the gen erator electric system from the electric utility dis tribution system when the generator is operating Failure to isolate the two electric system power sources from each oth...

Page 23: ...or Adjustable Wrenches Socket Wrenches or Nut Drivers Standard and Phillips Screwdrivers Level Sledge Hammer Channel lock Pliers Spade Shovel and Safety Goggles 1 2 ITEMS THAT MUST BE PURCHASED 2 20 p...

Page 24: ...to grade A Attach one end of the grounding strap No 12 AWG stranded copper wire to grounding rod and the other end to the grounding lug located at rear of unit Make sure grounding rod and strap are no...

Page 25: ...R Hold the Power Transfer Monitor in desired location and mark the mounting holes The mounting holes are 1 4 inch in diameter Drill pilot holes Use two fasteners which are appropriate for the area for...

Page 26: ...t or to the right to desig nate which tank will be the primary or service cylin der tank That tank will supply fuel to the generator first When the lever is moved to a position an indi cator will show...

Page 27: ...as clogging is a potential cause of regulator malfunction Great care has been taken in the manufacture of the regulator and it has been thoroughly tested and UL listed However even a small piece of d...

Page 28: ...r leaks 2 Oil Pressure switch is defective 2 3 Oil is contaminated with dirt 3 Change oil and oil filter HIGH TEMPERATURE 1 Engine oil is low 1 Check and fill engine oil 5 Flashes of LED 2 Air flow is...

Page 29: ...Generac Power Systems Inc 27 Appendix 2 Notes CENTURION 3500 Home Standby Generator...

Page 30: ...28 Generac Power Systems Inc Appendix 2 Notes CENTURION 3500 Home Standby Generator...

Page 31: ...Generac Power Systems Inc 29 Appendix 2 Notes CENTURION 3500 Home Standby Generator...

Page 32: ...ITCH ON OFF 125V 15A SW1 AUTO OFF MANUAL SWITCH ON OFF 125V 15A SM STARTER MOTOR SC STARTER CONTACTOR LOP LOW OIL PRESSURE SWITCH GRD2 CONTROL PANEL GROUND ISOLATED GRD3 POWER STRIP GROUND F1 FUSE 7 5...

Page 33: ...1A 44 44A 44A 44A 44A 44A 17 0 0 0 UTILITY 11E GENERATOR 11E 11D 11E TB1 TB2 L2 L1 SR SW3 0 0 0 0 CB2 CB3 0 2 22 66 77 11C 4 POWER STRIP WIRING 0 GFCI GFCI 0 22 22 GRD 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 SW...

Page 34: ...3 2 2 66 77 15 0 SW1 9 14 13 12 11 10 6 8 7 5 J1 4 3 1 2 44 11 44 11 11 11 0 0 0 0 14 17 4 6 13 56 2 CB 1 2 15 2 85 86 18A 0 0 0 17 17 17 6 6 4 22 11 LED ALARM INDICATOR LOP LOW OIL PRESSURE SWITCH S...

Page 35: ...6 77 66 77 66 77 66 77 77 66 17 22 11 11 44 17 13 6 2 11 44 2 18A 18A 56 14 6 4 0 4 0 0 2 6 86 85 0 0 11 4 13 17 44 11 44 22 11 22 11 ENGINE AND ALTERNATOR 11 0 0 0 0 CONN 1 5 11 L1 11F 11A L2 CB 2 0...

Page 36: ...11 9 8 11 5 20 0 15 14 13 17 3 7 11 11 39 38 19 47 10 47 31 32 33 1 4 34 29 28 21 22 5 24 37 10 23 46 45 44 43 42 41 40 12 49 50 48 12 45 51 42 52 35 53 12 55 56 54 Appendix 4 Exploded Views Parts Li...

Page 37: ...BACK 24 0C2506A 3 MESH DOOR PANEL 25 0D7176 12 WASHER SELF LOCKING 1 DIA 12GA 26 0D8254 1 SHIELD MUFFLER 27 0E2099 1 PANEL REAR DIVIDER 28 0E5685C 1 FOAM ENGINE COMPARTMENT FRONT 29 0E5685B 2 FOAM FAN...

Page 38: ...Views Parts Lists CENTURION 3500 Home Standby Generator Generator Drawing No 0E2151 A 1 4 6 5 2 8 10 2 18 36 8 9 1 20 38 20 23 20 21 21 2 18 21 2 18 23 24 25 26 27 28 29 30 31 32 33 34 29 24 35 22 2 1...

Page 39: ...1 BRACKET ENGINE MOUNTING 18 022145 19 WASHER FLAT 5 16 19 030231 3 SCREW HHC 5 16 18 X 1 1 2 20 0C3168 4 5 16 SPECIAL LOCK WASHER 21 022259 8 NUT HEX 5 16 18 22 0C8565 1 SCREW SHC M8 1 25 X 18MM 23...

Page 40: ...er Systems Inc 15 14 3 24 28 17 18 19 20 21 6 7 8 9 5 4 11 13 23 22 2 1 16 28 25 10 29 12 6 7 6 8 30 31 Appendix 4 Exploded Views Parts Lists CENTURION 3500 Home Standby Generator Control Panel Drawin...

Page 41: ...MINAL STRIP 2 POSITION 12 0E5840 2 CIRCUIT BREAKER 15A PUSH PULL MAIN RESET 13 0E2042 1 INDICATOR LIGHT 14 0A9611 1 FUSE AGC 7 5A 15 032300 1 FUSE HOLDER 16 0E4494 1 SWITCH ROC DPDT ON OFF ON 17 0E510...

Page 42: ...7 8 15 16 17 16 15 10 1 12 13 14 19 20 20 21 22 23 26 27 28 31 30 36 35 9 33 37 45 44 41 42 9 38 39 40 9 34 52 53 54 6 9 Appendix 4 Exploded Views Parts Lists CENTURION 3500 Home Standby Generator Gn...

Page 43: ...666 1 BREATHER TUBE 20 090051 1 GASKET MANIFOLD HEAD 21 080316 2 SCREW HHFC M6 1 0 X 30MM 22 090948 1 INTAKE MANIFOLD 23 078631 1 GASKET CARBURETOR MANIFOLD 24 0E2094 1 CARBURETOR 25 091846 1 GASKET C...

Page 44: ...22 24 25 48 30 17 13 28 4 18 40 37 36 46 39 38 21 29 16 35 33 15 32 31 5 41 49 27 1 47 51 12 7 19 1 2 3 9 13 11 10 6 7 50 52 Appendix 4 Exploded Views Parts Lists CENTURION 3500 Home Standby Generator...

Page 45: ...STEM SEAL 21 0A8822 1 CYLINDER HEAD GASKET 22 078691 1 OIL PRESSURE RELIEF COVER 23 0A5772 1 OIL PRESSURE SPRING 24 0A5776 1 11 32 BALL 25 074908 1 M5 FORM SCREW 26 078606 4 M6 1 0 X 12MM SCREW 27 07...

Page 46: ...25 26 32 26 11 9 14 REGULATOR 24 23 22 21 20 19 17 16 34 29 37 28 30 33 21 20 27 8 2 31 9 41 42 39 36 15 50 51 45 46 40 47 18 38 10 11 48 49 52 Appendix 4 Exploded Views Parts Lists CENTURION 3500 Ho...

Page 47: ...RAME ASSEMBLY LP ENCLOSURE 27 0E3163 1 BOX BATTERY REGULATOR 28 0C8285 1 BRACKET BATTERY HOLD DOWN 29 0E2038 1 PANEL TANK ENCLOSURE BACK 30 0E3164 1 COVER BATTERY REG BOX 31 0E1805 1 TRAY TANK ENCLOSU...

Page 48: ...erac Power Systems Inc 5 6 4 3 2 7 8 1 10 9 11 12 13 14 15 19 21 22 23 24 25 26 16 17 18 20 27 28 Appendix 4 Exploded Views Parts Lists CENTURION 3500 Home Standby Generator Gas Regulator Drawing No 0...

Page 49: ...STD PIPE 1 8 STEEL SQ HD 13 0D3308 2 WASHER FLAT 3 2MM ID X 10MM OD 14 070728 2 SCREW PFILHM M3 0 5 X 5 15 0C5764A 1 SPRING REGULATOR 16 0C4643A 1 INLET TWIN REG 11 11 DIA 17 0C6066 1 SEAL INLET REGU...

Page 50: ...eglect improper maintenance or unap proved modifications or the use of counterfeit and or grey market parts not made supplied or approved by Generac You are responsible for presenting your engine to a...

Page 51: ...ECS Warranty shall be warranted for the remainder of the ECS Warranty Period prior to the first scheduled replacement point for such emissions related part 4 Repair or replacement of any warranted em...

Page 52: ...dent misuse abuse negligence or improper installation As with all mechanical devices the Generac engines need periodic part s service and replacement to perform well This warranty will not cover repai...

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