Conventional 10w-30 motor oil.

If you are operating in below freezing temperatures, use full synthetic 5w-30.

Regular unleaded 87 octane from a gas station

Higher octane fuels and rec fuel will require swapping to the proper NGK plug (spark plug)  to prevent carbon build up from fuel fouling

LPG burns at about 1 gal per hour at 50% load. So a 5 gallons (20L) Propane tank will last you 5-6 hours at 50% load for our bigger Hybrids Units.

For the Inverters, a 5 gals Propane Tank can last you up to 8 hours at 50% load.

On Hybrids (Dual/ Tri fuel), switch the two circuit
breakers on the front control panel to the ON position

If nothing or low voltage shows up on the multi display meter, the AVR could need to be replaced or the ECM could need to be reset.
Please contact Tech Support.

Please refer to the owner's manual for spark plug references. A few different alternative spark plugs will be listed.

As a reminder, you can download each product's manual from the website.

Changing the oil after the first 25 hours of use is the only break in procedure we recommend

No, we do not sell or recommend conversion kits as it would count as a modification and void the warranty.

Our generator was engineered and tested to an OEM specific fuel, if this fuel is change it will cause engine damage.

Yes, you can parallel them together for more power.

For W01781/W01782 and all our 3000W Inverters: You will need the Parallel Kit 1201.

For W01682/W01784: you can parallel them together only with the cables they come with.

No adding a remote start to a unit would count as a modification and void the warranty.

On HYBRID models, the propane valve would have to be left open, which means the fuel will continuously flow into the cylinder which is a fire hazard.

The THD is the fluctuation of electricity and determines the potential for problems with high-end electronics or those considered sensitive when the power goes out.

Our generators are safe with sensitive electronics.

For PERFORMANCE and HYBRID, it is roughly 11-14%.

For WHISPER, it is less than 3 %.

We do not offer any exhaust extensions. And we certainly do not recommend you trying to extend the exhaust by yourself. Doing so can cause your exhaust to back feed and prevent your generator from running well causing engine damage. It will also void the warranty.

No, it is not possible to reduce the noise of your generator as we do not offer any compatible noise reduction kits.

No, this is very dangerous as it makes your generator prone to leaks and fire. It will also void the warranty on your generator.

No, our generators are not compatible with an automatic transfer switch.

They are compatible with a regular transfer switch, you will have to start the generator yourself in case of power outage. Please contact technicians for installation.

This is crucial for your FIRMAN well being to respect storage conditions. If you want your FIMAN to be ready when you need it, please refer to the Blog Article "How to store my FIRMAN Generator".

You can purchase FIRMAN parts by calling us at 1-844-FIRMAN1 (1-844-347-6261). You can also chat with our support staff, who’d love to help you out.

We recommend running it for no longer than 14 hours with a 2-3 hour break in between.

Needs to be done by a plumber or professional + need to purchase the 10ft or 25ft Natural Gas Hose Kit on FIRMAN Website. It needs to be a ½ inch hose with a 3/8 female flare.

Regulation:
Max of 101 000 BTU’s // Psi between 0.25 and 0.40

You need to protect the gas tank & the plugs from the rain but leaving both extremities open to the air so the air can go in and out the generator.

You can search for Generator Housing online, or install a big piece of flatwood on top.

If the elevation exceeds 3000 ft, yes.

Increase in altitude means a decrease in oxygen. Lower
oxygen levels mean the fuel mixture will be too rich. If the fuel mixture is too rich this leads to carbon fouling of the plug and spark arrestor, if left
unchecked this will cause too much backpressure on the engine, and it will not
run properly. You will need to order a High-Altitude Jet trough Tech Support (phone line or Chat). It is covered by the warranty.