Generac Power Systems MEGA 2500 Owner'S Manual Download Page 4

CARTON CONTENTS

The following parts are shipped loose with your 

Generator:

•

Main Unit — Generator with wheels and guide handle

• Wire Form
• Battery Charge Cables
Become familiar with each piece before assembling the

Generator. Check all contents against the illustration on

Page 5. If any parts are missing or damaged, call the

Generator Helpline at 

1-800-270–1408.

TO REMOVE GENERATOR

FROM CARTON

• Remove loose parts included with Generator.
• Slice two corners at guide handle end of carton from

top to bottom so the panel can be folded down flat,

then remove all packing material.

• Raise guide handle and secure in place.

• Remove the unit by rolling it out the opening in the

carton, then check carton for additional loose parts.

• Insert the wire support.

BEFORE STARTING THE

ENGINE

Perform the following tasks before trying to start the 

generator engine:

ADD OIL TO ENGINE

Note:  

When adding oil to the engine crankcase in the

future, use only high quality detergent oil rated with API

service classification SF and SG rated SAE 30 weight.

Use no special additives. 

DO NOT USE SAE 

10W-40.

Select the oil’s viscosity grade according to your

expected operating temperature.

Although multi-viscosity oils (5W30, 10W30, etc.)

improve starting in cold weather, these multi-viscosity

oils will result in increased oil consumption when used

above 32°F. Check your engine oil level more frequently

to avoid possible damage from running low on oil.
• Place Generator on a level surface
• Clean area around oil fill and remove oil dipstick.

• Wipe dipstick clean.
• Pour oil into the oil fill opening until oil reaches FULL

mark on the dipstick. DO NOT OVERFILL.

• Install oil dipstick, hand tighten securely.

CAUTION:  Any attempt to crank or start the

engine  before  it  has  been  properly  serviced

with the recommended oil results in an engine

failure.

NOTE:

The generator’s revolving field rides on a pre-

lubricated and sealed ball bearing that requires no

additional lubrication for the life of the bearing.

Figure 2 — Raise Guide Handle

Figure 3 — Insert Wire Support

Figure 4 — Remove Oil Dipstick

GENER

A

C

Generac Mega 2500 Extended Life Generator

4

E x t e n d e d   L i f e   G e n e r a t o r

Loosen knobs

to raise handle

Dipstick

Tighten knobs when

handle is straight.

colder

32°F

warmer

5W–30

10W–30

Summary of Contents for MEGA 2500

Page 1: ...vent of a utility power failure the fol lowing step must be taken Before connecting the generator to an electrical system open the main circuit breaker or main switch serving the system to isolate the...

Page 2: ...ce that might involve a hazard For that reason warnings in the Manual and warnings on tags or decals affixed to the unit are not all inclusive If you intend to handle operate or service the unit by a...

Page 3: ...rator with elec trical loads connected to receptacles with the connected devices turned ON Start the engine and let it stabilize before connecting electrical loads Dis connect all electrical loads bef...

Page 4: ...no special additives DO NOT USE SAE 10W 40 Select the oil s viscosity grade according to your expected operating temperature Although multi viscosity oils 5W30 10W30 etc improve starting in cold weat...

Page 5: ...IRCUIT BREAKER Protects the genera tor against electrical overload Breaker is push to reset type AIR CLEANER Filters intake air as it is drawn through the engine 5 5 H P ENGINE Provides the power need...

Page 6: ...buretor cleaner products in the fuel tank or permanent damage may occur Clean area around fuel fill cap remove cap Add UNLEADED regular gasoline slowly to fuel tank Install fuel cap and wipe up any sp...

Page 7: ...king around a battery Battery electrolyte fluid is an extremely caustic sulfuric acid solu tion that can cause severe burns Do not permit fluid contact with eyes skin clothing etc If Spill occurs flus...

Page 8: ...r for starting than for running This surge of power lasts for only a few seconds when starting such motors Be sure you allow for this high starting wattage when selecting electrical devices to connect...

Page 9: ...e cleanliness of the generator frequently and clean when dust dirt oil moisture or other foreign sub stances are visible on its exterior surface NOTE We DO NOT recommend using a garden hose to clean g...

Page 10: ...r a hot generator Let the unit cool for a sufficient time before placing a cover on the unit Placing a cover on the unit before generator is sufficiently cool could could start the cover on fire ENGIN...

Page 11: ...Connect wire to spark plug to spark plug 6 Bad spark plug 6 Replace spark plug 7 Water in gasoline 7 Drain gas tank fill with fresh fuel 8 Overchoking 8 Open choke fully and crank engine 9 Excessively...

Page 12: ...ELECTRICAL DATA Drawing No 99697 G E N E R A C Generac Mega 2500 Extended Life Generator 12 E x t e n d e d L i f e G e n e r a t o r...

Page 13: ...DED VIEW CONTROL PANEL ITEM PART NO QTY DESCRIPTION 1 99837 1 PANEL Control 2 66818 2 OUTLET 120V 15A 3 99887 1 CAPACITOR 12 5 MFD 4 90418 1 OUTLET 12V DC 5 84543 C 4 SCREW 3 5 x 18mm Lg Phillips Head...

Page 14: ...EXPLODED VIEW GENERATOR Generac Mega 2500 Extended Life Generator 14 E x t e n d e d L i f e G e n e r a t o r G E N E R A C Drawing No B1763...

Page 15: ...SHNUT 1 2 Dia 20 B1760 2 ASSEMBLY 10 Wheel Tire 21 86292 10 HHCS 10 16 x 3 4 Self Drill 22 52858 2 NUT M8 1 25 Locking 23 87841 2 MOUNT Vibration 24 39414 2 HHCS M8 1 0 x 35 ITEM PART NO QTY DESCRIPTI...

Page 16: ...e and does not apply to a generator set or engine or parts which have been subjected to improper or unauthorized installation misuse negligence accident overloading over speeding improper maintenance...

Reviews: