Powermate PM0601250 12500-15625 Watt Portable Generator Review

Powermate 12500W Generator

Powermate 12500W Generator

Powermate Model PM0601250 is a 12,500/ 15,625 Watt Gas Powered Portable Generator With Electric Start. This model is non CARB complaint.

Powermate has been an industry leader for over 40 years. They are known for the solutions they offer in terms of portable power and portable generators. They have generators to suit all needs and purposes. These generators are built with the best components available.

All the engines for their generators are made by well known brands such as Honda, Mitsubishi, Yamaha and Subaru. The Powermate generators are covered by one of the best warranties available and they have more than 2000 service centers all over the country to help you service these generators.

The Powermate PM 0601250 generator is one of the generators that they produce and this generator is rated for 12,500 watts of continuous power, making it an ideal generator to backup the power supply in your home, to use on job sites where there is no power available to run power tools or any other place where you need portable electric power.

Power Output and Generation

The Powermate PM 0601250 generator has a continuous power output of 12,500 watts and can surge up to 15,625 watts.

This generator is equipped with a 22 hp V-Twin OHV gasoline engine from Subaru. It has a low oil shutdown protection.

The engine is setup with an idle control which will lower engine rpm from 3600 to 2000 rpm to conserve on fuel consumption when no power is being pulled. This control can be disabled with the switch on the control panel. Also the battery needs to be installed for this to work.

The unit comes with 2 quarts of oil and a 12V 34AH battery for the electric start.

Electrical Output.

Two sets (4 – 120V duplex receptacles) at 20 amps per set. (2 x 2400W = 4800W) and are also GFCI protected receptacles

One 120V L5-30A twist-lock receptacle (3600W)

One 120/240V 50 amp Receptacle (6000W & 12,000W respectively)

All receptacles can be used at the same time but total load is restricted to 12500W max. At 120V that is 104A, or effectively 100A based on the individual limits per plug. I wasn’t able to get a wiring diagram to verify the data provided in the manual, but it seems reasonable to expect adequate power all around.

Based on the output ability this setup is going to give you every thng you need. However, since the L5 twist lock is only wired to 120V it may not be the right setup for connecting to your house for power. You will need to be sure to use a 50 amp inlet box or go with an adapter with breaker to limit to a L14-30 amp depending on your setup. See accessories below for suggestions.

Ref: plug and receptacle info.

Fuel Type and Noise Levels:

Powermate uses Subaru 653cc engine

Powermate uses Subaru 653cc engine

The Powermate PM 0601250 has a 22 hp V-Twin engine which runs on unleaded gasoline. With a fuel tank capacity of 8 gallons this generator can run for 6 hours at 50% load capacity.

The fuel tank is hard plastic to help keep the weight down.

Noise: As to the noise level of this generator it is comparable to a lawn mower.

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Dimensions and Weight

The dimensions of the Powermate PM 0601250 generator are 38.88 x 22.38 x 29.63 inches (L x W x H) and the whole unit weighs in at 360 lbs. and with gas (8 times 6 lbs per gal = 48lbs) about 510 lbs.

Typical Uses and Needs

The powermate PM 0601250 generator will deliver 12,500 watts of continuous power and can surge up to 15,625 watts. With this amount of power this generator is quite capable of running your whole house in times of power outages.

It is ideal as a backup power source for your home. By being portable this generator can be set up wherever you may need electrical power and can also run your job site where you may need to run power tools.

It’s a big unit and will consume fuel, with 8 gallons and a good 6000W or so you’ll get up to 6 hours of run time, if you’re pulling power at the upper end, make sure you have a good supply of gas because you’ll be refueling every 2 or 3 hours. It is a generator that you could use anywhere you need electrical power to run power hungry machinery.

Display & Control Panel, Start-up

Powermate 12500W Control Panel

Powermate 12500W Control Panel

The display panel of the Powermate PM 0601250 contains the outputs and their circuit breakers on the front face of the generator.

When you face the control panel you will see that to the extreme left it has an idle control switch which controls the RPM of the engine when there is no load connected. This helps to conserve fuel as well as the engine as it runs at lower RPM when there is no load.

Moving right is the main circuit breaker which controls all the outlets. Below this you have the Hour meter which shows you the number of hours that your generator has been running.

Moving to the receptacles on the right is the 120/240V 50 amp heavy duty receptacle. Then the 120V L5-30 twist lock receptacle and on to the right of this receptacle you will find 3 circuit breakers.

Next you have 2 duplex 120 V 20 amp receptacles. These duplex receptacles are Ground Fault Circuit Interrupter receptacles.

Right on top of the control panel are 2 cord keepers that help to keep your cords from getting tangled and aiding in prevention of pull out.

Start up

The Powermate PM0601250 generator is equipped with an electric start system and is provided with an ON/OFF/START rotary key switch. Here are the steps to start this generator.

  1. Check the oil and fuel levels.
  2. Disconnect all electric loads from the unit.
  3. Open fuel shut off valve.
  4. Adjust choke if necessary.
  5. Turn the key switch to the Start position.
  6. Release the key switch when the engine starts.

Shut down

  1. Disconnect the electric load from the generator.
  2. Let the engine run for a couple of minutes to stabilize itself.
  3. Turn the key switch to the Off position.
  4. Close the fuel shut off valve.

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Noted Features

Here is a list of the features of the PM 0601250 generator.

  1. It is powered by a quality and powerful 22 hp V-Twin Subaru engine.
  2. It has an idle control feature which reduces fuel consumption when there is no load on the generator.
  3. It is equipped with 13 inch pneumatic wheels and dual folding handles which make it easy to move.
  4. This generator is equipped with an electric start feature.
  5. CordKeeper Restraint™ by Powermate is unique to prevent plugs from being pulled out of receptacles.

Care and Maintenance and Use

Like any equipment, you will get the best performance and the most out of this generator by taking care of it and performing periodic maintenance. Here are the guidelines as suggested by Powermate.

Daily before Operation

  • Check oil level.
  • Check fuel hose for cracks or other damage.
  • Check exhaust system for leakage.
  • Check choke operation.

After first 20 hours

  • Change engine oil.

Every 50 hours

  • Check spark plug, clean and adjust gap if necessary.
  • Clean air filter, replace if necessary.

Every 100 hours

  • Replace engine oil.
  • Clean fuel filter and fuel tank strainer, replace if necessary.
  • Check muffler screen, clean or replace if necessary.
  • Check all fittings and fasteners.

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Warranty and Repairs

The Powermate PM 0601250 generator is covered by a 2 year warranty from date of purchase for the original retail consumer and a 1 year warranty for commercial users for all defects in parts and workmanship including the labor to replace them. Proof of purchase is a requirement and notification of need must be within the warranty period.

The engine is covered by a separate warranty from the engine manufacturer. Subaru is a common dealer and reasonably easy to access.

The cost of transport of the unit to the service representative is to be borne by the consumer.

Customer service centers around the USA totals about 2000 making it a lot easier to get service than some of the lesser brands.

Consumer Comments

Powermate 12500W Front View

Powermate 12500W Front View

The Powermate PM 0601250 generator scores 4.8 stars out of 5 on Amazon. The customers who bought this generator were all very pleased with its performance.

This is what some of them had to say about it.  A few commented on how there was more than enough power for their entire home,   including more than two furnaces with fans, two fridges and having enough left over to power outdoor lighting. They commented on how they were pleased with such a great purchase.”

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Pros & Cons


  • It is very well made with an engine from Subaru.
  • It can deliver 12,500 watts of continuous power and surge up to 15.625 watts.
  • It has an electric start system.
  • It has 13 inch pneumatic wheels and dual handles for easy maneuverability.
  • Its 8 gallon fuel tank lets it run for 6 hours at 50% load capacity.
  • It has an hour meter.
  • It has 4 120V 20 amp GFCI protected outlets, 1 120V 30 amp twist lock out let and 1 120/240V 50 amp outlet.


  • Difficult to fill engine oil.
  • It is quite loud.
  • Fuel consumption is high due to high output.


The Powermate PM 0601250 generator has a list price close to $3000. It is available at Amazon for under $2450 with free shipping. Check here for: Latest Price Powermate 12500W Generator.


There are a few accessories that you could get to go with your generator. Finding a dust cover for this generator is a bit difficult. Besure you check dimensions on the covers. This genie is a few inches longer than most and the covers come up a bit short in the overall length. 

However, we found a nice tent set up that will protect it from the elements when in use. Check out this tent:

GenTent wet weather safety canopy for portable generators

You could also get a Reliance controls 50 amp power cord inlet box to connect the generator to your home.

Reliance Controls PB50 50 Amp Generator Power Cord Inlet Box For Up To 12,500 Watt Generators

or there is this RV unit inlet box. Reliance Controls PBN50 Plastic Case Power Inlet Box, 50-Amp

Generac also has a 50 amp box: It’s the Generac 6341 50-Amp 125/250V Raintight Power Inlet Box with Spring-Loaded Flip Lid

There are also power cords available in a number of lengths.

Generac 6330 10-Foot 50-Amp Generator Cord with NEMA 1450 Male and CS6364 Female Locking Endxx

Powermate Oil

Powermate PA0650074 10W30 4-Cycle Small Engine Oil, Quart

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The Powermate PM 0601250 generator with its continuous output of 12,500 watts is a large enough generator to power your whole home in case of emergencies. It is a well made generator which uses the best of the engines available on the market. It is highly rated by the existing user base which speaks well to quality of the machine.

It has one of the best warranties on the market. For the price it is a generator that can not only serve as a source of back up power in times of emergencies to power your home but it can also be used on outdoor job sites to power your power tools and other equipment.

With an 8 gallon fuel tank and a 6 hour running time at 50% load capacity it is one of the most dependable generators in its class. It will require a good supply of gasoline if used heavily.

It this power and cost range this unit gets a thumbs up recommendation.

Similar Generation Units:

The following Generators are similar to the above but at different wattage sizes

Powermate PM0497000.04 8,750 Watt 389cc 13HP Honda GX390 Gas Powered Portable Generator

Powermate PM0435005 6,250 Watt 287cc 10 HP Subaru EX30 Gas Powered Portable Generator With Straight Handle

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