Question about Makita 2,800 Watt 6 Hp Portable Power Generator #G2800L

Open Question

No power from Makita G5501R

I have a generator that does not put out any power. Rotor is OK but I found out that one of the diodes on the stator is open.

Where can I find a replacement since it is epoxied into a plastic case with a resistor? If not, what specs do I need to make a replacement?

I can't justify buying a $500 rotor for a $10 diode...

Posted by on

5 Suggested Answers

  • 154 Answers

SOURCE: no voltage engine ok

might need to excite the generator with a drill.

Posted on Jun 14, 2009

sal_kh_sab
  • 98 Answers

SOURCE: My makita 4300l generator runs for a brief

it might be the carburator....replace it and see what happens..

i hope i helped...send me an email for more details

Posted on Oct 11, 2009

kel1guy2002
  • 3740 Answers

SOURCE: I have ef 2300, engine

Hi and welcome to FixYa, I am Kelly
On the rotor you need to read from the rectifier to the metal for shorts. No shorts allowed. There is a varistor as part of the rotor winding circuit and if the varistor has failed the rotor will not work. If the vairstor fails usually there is a problem with the rotor wnding. I can tell you I have had them read just fine wire to wire but... they were still defective.

Also check the condenser wires from the control panel through the stator winding. (usually yellow) Disconnect one of the wires from the condenser and probe the terminals. This should read less than 5 ohms. INSPECT the condensor wires..... there is often a quick disconnect terminal somewhere in the wires. These terminals are cylinder shaped and have been known to melt.
Read across the condensor itself with the meter on R x 10K you should see a momentary jump in resistance and then the meter drifts quickly to infinity each time you REVERSE the test leads and probe the condenser.

There is also a SQUARE diode pack with 3 or 4 wires inside the control panel that usually has a single mounting screw. One terminal will be 90 deg out from the rest of them (Common) read the terminals of the diode pack to the common. Reverse the leads and do it again. If should read continuity in one polarity and open in the other (leads reversed).

As for the stator checks reading wire to wire is good... but read wire to stator case also. No shorts allowed.

I believe you will either find a bad rotor or a problem in the condenser circuit.

Thanks for choosing FixYa,
Kelly

Posted on May 03, 2011

  • 35 Answers

SOURCE: my g5501r stopped generating,engine runs

There is at least one and possible two fuses and one most likely has failed. You need to remove the blow fuse and replace it. Mine were the size of two D sized batteries put together. I have a generak 10k and I experience same problem. I purchased two new fuses and all is well.

Posted on Aug 25, 2011

claudeinmo
  • 9098 Answers

SOURCE: what does a diode stack assmelly do on my

makita g5501r parts Power Generators Questions & Answers

www.fixya.com > Forum > Tags > makita g5501r parts
Power Generators makita g5501r parts questions and answers. ... I own a makita 6100generator and it is only putting out about 105 volts ac and about 208 volts .

Posted on Nov 18, 2015

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

What does a diode stack assmelly do on my


makita g5501r parts Power Generators Questions & Answers

www.fixya.com > Forum > Tags > makita g5501r parts
Power Generators makita g5501r parts questions and answers. ... I own a makita 6100generator and it is only putting out about 105 volts ac and about 208 volts .

Nov 18, 2015 | Makita Power Generators

1 Answer

My Catepillar generator is producing 400v not 480v


You may have a bad exciter diode, short in rotor/stator check AVR output voltage to exciter also, Ohm exitier stator/rotor

Nov 30, 2012 | Caterpillar Power Generators

1 Answer

What does a stator and rotor look like on NorthStar 5500W generator


The stator is the series of copper windings inside the generator (does not move,). The stator will have several pairs of leads connected to the control panel. The rotor also has winding however is the center revolving shaft. The rotor creates a magnet that excites the stator. The rotor could be brush type having two or more rings where carbon brushes make contact or brushless having built-in diodes and voltage regulator (some not all). You can obtain resistance reading from your dealer to test the windings in the stator. You can easily test the brush type rotor by applying 12v (one or two amp) dc to the rings and test for good magnet at metal part of rotor ( use thin metal blade). Good luck

Oct 15, 2011 | Northstar Generator 9 Hp, 5500 Watt,...

1 Answer

My g5501r stopped generating,engine runs fine,everything on but no electricity


There is at least one and possible two fuses and one most likely has failed. You need to remove the blow fuse and replace it. Mine were the size of two D sized batteries put together. I have a generak 10k and I experience same problem. I purchased two new fuses and all is well.

Aug 25, 2011 | Makita 2,800 Watt 6 Hp Portable Power...

1 Answer

Voltage shows 80 on 110v and 155 on 240v


if you take the end of the generator off you will see a rectifier or four diodes with a varister or a full wave brige rectifier, sounds like you have a bad diode, or a shorted exite winding to the rotor, the exite winding is a small turn winding feeds the rectifier board that ac signal is converted to dc to feed the rotor ,the rotor produces a magnetic field which rotates inside the stator windings , the magnetic lines of flux from this field cut through thre stator winding inducing a voltage in the stator coils. hope this helps

May 27, 2011 | Dewalt DG6000 Heavy Duty 6000 Watt Gas...

1 Answer

I have a generator that does not produce any volts. I replaced the brush block because it was bad with no help. I took resistance readings of the rotor and stator. Are these in spec?? briggs and stratton...


As long as you have continuity through the stator and rotor windings, and no continuity from the windings to the core, you should be good.

If the brush block was replaced due to it being defective, take a look at the diode and capacitor regulator as well. Using a multimeter, the diode should indicate continuity in one direction, infinite resistance in the other. If you get this, then replace the capacitor. If not, then replace the diode, and likely the capacitor as well.

May 28, 2010 | Briggs & Stratton Power Generators

2 Answers

Have an fg5700ak runs ok but no power output what


Typical diodes are 10 amp for these. The stator and rotor both have VERY low resistance readings. The reading typically will be below that which will register MEANINGFULLY on the digital meters.

My generator had 10 amp diodes with surge protectors across them. One of the protectors shorted and generator output was zero. Mine is a 6KW diesel silent unit.

Replaced the diodes with 70 amp ones with surge protectors that have 20 times the energy absorbtion as the originals. Unfortunately this required some lathe work to make holders for the diodes and the surge protectors to ride on the rotor.

Used the light bulb trick to remagnitize it once diodes were replaced.

Nov 10, 2009 | McCulloch 13HP 338 Cc Portable Generator #...

1 Answer

Coleman Generator not Making Power


actually, it sounds like the diodes are blown. Check our diodes.

As for checking stator, find the two wires, typically labeled L1 and L2 that are going to it. Measure with a multimeter. If there is no visual signs of damage, continuity can indicate a good stator. You should not have continuity between either wire and the stator frame.

The same goes for the rotor as well. The resistance measurements will not be the same for each one though.

Unfortunately, Powermate is out of business, and service information is scarce.

Aug 16, 2009 | Coleman Powermate Powermate 5000W...

1 Answer

No voltage engine ok


might need to excite the generator with a drill.

Apr 30, 2009 | Yamaha 2300 Watt Generator - EF2600

Not finding what you are looking for?
Makita 2,800 Watt 6 Hp Portable Power Generator #G2800L Logo

Related Topics:

352 people viewed this question

Ask a Question

Usually answered in minutes!

Top Makita Power Generators Experts

Mike Cairns
Mike Cairns

Level 3 Expert

3053 Answers

Paolo Torres

Level 3 Expert

485 Answers

Tom Chichester

Level 3 Expert

24685 Answers

Are you a Makita Power Generator Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...