Current lead times are 1 week.

Central Maine Diesel Inc. (“CMD”) is not affiliated with, sponsored by or otherwise associated with American Honda Motor Company, Inc. (“American Honda”). We purchase genuine Honda® engines and assemble the generator set. Honda® is a registered trademark of American Honda.


13,750 Watt Propane/Natural Gas Generator

Visit my Store  10,000 Watt | 13,750 Watt | 16,000 Watt

Our Reduced Price:$

13,750 Watt Propane/Natural Gas Generator - This propane/natural gas is suitable for standby power or emergency use and has plenty of power to run your home, job site or business. The generator's simple, compact design allows for easy installation in a variety of applications requiring a small footprint and can be anchored to a concrete pad or operated free standing.

Like all Central Maine Diesel generators, this unit is fully customizable. From auto start controls to fuel systems to 3 phase upgrades, you can customize the genset to fit your application! And, as an added benefit you will always have the flexibility to upgrade options later.

This unit features an 20 HP Honda GX 630 propane/natural gas engine, brushless generator, critical exhaust silencer, oil pressure shutdown, large capacity automotive style air cleaner, receptacle panel with 120 V and 240 V outlets, welded steel skid frame, vibration isolator mounts, battery cables, 2 year warranty and electric start.


Options Price
Deluxe Receptacle Panel + $395
Two-Wire Auto Start + $799
Low Pressure Regulator (for LP Tank) w/ Hose + $125
3 Phase Upgrade + $399
50 Hz Operation + $150

Maximum Output 13,750 watts
Continous Output 12,000 watts
Power One-Phase MLS4-Y
Load Amperage at 120 volts ---
Maximum Load 115 Amps
Continous Load 100 Amps
Load Amperage at 240 volts ---
Maximum Load 57 Amps
Continous Load 50 Amps
Sound Level @ 23 ft(7 m) 74 dB(A)

Model Honda GX 630
Type 4 Stroke, OHV, V-Twin
Horsepower 20 HP
Oil Capacity (w/ Oil Filter) Approx. 1.5 qts
Lubrication System Full Pressure
Oil Filter Automotive, Spin On Style
Cylinder Block Aluminum w/ Cast Iron Sleeves
Bore & Stroke 3.07" x 2.83"
Exhaust Outlet 1 1/4" OD Muffler
Fuel Propane & Natural Gas
Starting System Electric

Consumption at 1/2 load 1.1 gallons/hour
Consumption at 3/4 load 1.4 gallons/hour
Consumption at full load 1.7 gallons/hour

Power Output Panel  
Main Line Circuit Breaker 50 Amp
120/240 VAC NEMA#L14-50R 1-50 Amp

Installation Data  
Fuel Inlet Hose Size 3/8"
Fuel Fitting 3/8" FNPT
Fuel Inlet Pressure 11-14" Water Column
Minimum Power Lead Size 0-50 Feet: 6 AWG
51-100 Feet: No. 4 AWG
No. Power Lead Conductors 4
Exhaust Outlet 1 1/4" OD Muffler Outlet
Battery Type 12 VDC - 400 CCA
Engine Oil Type 10W-30 Synthetic
Exhaust Location & Direction
(Facing Engine)
Service Points
(Facing Engine)
Oil Fill Cap: Right-Side
Oil Filter: Left-Side
Fuel Inlet: Front-Side
Power Output: Back-Side
Control Panel: Left-Side
Air Filter: Front-Side

Maintenance Schedule  
Replace Oil Filter 300 hours / 12 months
Replace Air Filter 300 Hours / 12 months
Replace Spark Plug 300 Hours / 12 months
Exercise Generator Under Load Once each month
Change Oil 100 hours / 6 months

Engine Warranty 2 Years
Generator Warranty 2 Years
100% Coverage for Parts & Labor Standard

Length 27-1/4"
Width 19-1/4"
Height 20-3/4"
Dry weight 215 lbs



E-Mail Address:  

Central Maine Diesel
1185 Hammond St. Suite 11
Bangor, ME 04401

Phone: 1-207-941-1188
Fax: 1-207-941-1189

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