Firman P03628 Gasoline 3650W/4550W Portable Generator | Remote Start | CO Alert

The Firman P03628 Gasoline 3650W/4550W Portable Generator Starts From a Remote and Runs Up to 14 Hours

The Firman P03628 is a 120V gasoline open frame generator built on a 208cc Firman OHV engine. It delivers 4550 starting watts and 3650 running watts, and its 5-gallon steel tank gives you up to 14 hours of run time at 50% load.

It's made for RV owners, campers and homeowners who want the convenience of remote start in a mid-size generator. You can start it three ways, by remote, by the electric start switch or by the recoil starter, and Firman CO Alert shutdown and an RV-ready TT-30R outlet come standard.

Firman P03628 Gasoline 3650W/4550W Portable Generator Features

Remote Start With a Warmup Delay

Push and release START on the included remote and the generator turns over for 3 to 5 seconds and starts. If it doesn't catch, it tries five more times. Output is held for 15 seconds after start so the engine can warm up, and pressing STOP gives it a 15-second cool down before it shuts off.

Three Ways to Start

Besides the remote, you can hold the engine start switch in the START position or pull the recoil starter. A battery switch powers the electric starter. Turn it off at the end of each use to prevent battery drain.

CO Alert Automatic Shutdown

CO Alert shuts the engine down automatically when harmful levels of carbon monoxide build up around the generator, or if a CO Alert fault occurs. A yellow light blinks for five seconds at startup to show the system is working. CO Alert does not replace carbon monoxide alarms, so Firman tells you to install battery-powered CO alarms in your home.

RV Ready Control Panel

The covered panel has an L5-30R 120V 30A twist lock, a TT-30R 120V 30A RV outlet and a 5-20R 120V 20A duplex. Circuit breakers protect the receptacles if the generator is overloaded or a short occurs.

4-1 Data-Minder and Fuel Gauge

Press SELECT to see voltage, hertz, running hours and the low oil alarm. Running hours help you track the first oil change at 25 hours and each 100-hour change after that, and the fuel gauge shows how much gasoline is left.

Low Oil Shutdown and Cast Iron Sleeve

If the oil level drops below the minimum, a sensor stops the engine, which helps protect it. The 208cc engine has a cast iron sleeve, and an automatic voltage regulator (AVR) controls the output voltage as loads change.

Remote Holder, Bottle Opener and Flat Free Wheels

A remote holder keeps the remote with the generator, and a built-in bottle opener comes in handy at camp. The P03628 weighs 120 lbs and rolls on 8.0" flat free wheels with a handle.

Real-World Applications

RV trips. Plug your RV into the TT-30R outlet and start the generator from the remote, with the generator placed well away from the RV's windows and doors.

Camping and recreational events. Firman lists recreational events among its uses. Remote start lets you start and stop the generator without walking over to it.

Home projects. Power tools and work lights through outdoor-rated extension cords using the L5-30R or the 5-20R duplex.

How It Compares to Common Alternatives

Versus the Firman P03503. The P03503 is recoil start only, rated at 3550 running and 4450 starting watts, and weighs 109 lbs. The P03628 adds electric and remote start and 100 more running watts.

Versus the Firman H03654. The H03654 has the same 3650W/4550W gasoline rating and adds propane operation, but it has no remote start. Choose the P03628 if you run on gasoline and want to start from a remote.

Versus inverter generators. The P03628 is an open frame generator with AVR, and Firman recommends a plug-in surge suppressor for sensitive electronics. If quiet running and power for electronics are your main concerns, an inverter generator may suit you better. If you want remote start and 30A outlets, the P03628 fits.

Is This Gasoline Generator the Right Fit

• California. Firman states this unit is not certified to ship to California, so it can't be sold or shipped there.
• 120V only. There is no 240V output. Firman's manual covers powering outdoor items with extension cords and does not recommend running cords directly into your home to power indoor items.
• Battery care. The 12V battery charges only while the engine runs. If you use the generator less than about once every two weeks, keep it on a trickle charger or maintainer (not included).
• Floating neutral. The AC receptacle ground pins are not functional, so devices that need a working ground pin, such as a plug-in GFCI, won't operate. The 5-20R duplex is not GFCI protected.
• Placement. Run it outdoors only, at least 20 feet from occupied spaces with the exhaust pointed away. Firman's manual says it is not intended for use at a construction site as defined by NEC section 590.6.

This may be a good fit if

• You want to start your generator from a remote
• You need a TT-30R outlet for your RV
• You want a recoil backup if the battery is low
• You want automatic CO shutdown

Common Questions

How Does the Remote Start Work?

Use the remote start program button on the control panel with the remote to program the generator for remote starting. Then push START, and the generator cranks for 3 to 5 seconds, retrying up to six times in all. The remote start indicator light flashes if it fails to start. Push START again to begin another cycle.

How Long Does It Run on a Tank?

Firman rates it at up to 14 hours of run time at 50% load on the 5-gallon tank.

How Loud Is It?

Firman lists 67 dB at 1/4 load.

What Warranty Does It Have?

The P03628 has a Firman 3-year limited warranty, with 1 year of parts and labor and 3 years of parts and technical support for the original purchaser. Commercial and industrial use is covered for 90 days parts and labor and 180 days parts. Register within 10 days of purchase.

What's Included

• 1 x Firman P03628 Gasoline Portable Generator
• 1 x Remote Control
• 1 x Remote Holder
• 1 x Engine Oil Bottle
• 1 x Oil Funnel
• 1 x Spark Plug Wrench
• 2 x Double Open-Ended Wrench (10mm x 12mm)

Remote Start Convenience for the Road and Home

The Firman P03628 Gasoline 3650W/4550W Portable Generator gives you remote, electric and recoil start, a 5-gallon steel tank, an RV-ready TT-30R outlet and CO Alert shutdown. If you have questions about outlets, run time or sizing, the Outbound Power team is happy to help.

Firman P03628 Manual

Firman P03628 Quick Start Guide