Question about Yamaha EF2400iS Portable Generator

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I have a EF2400is yamaha gen that was surging on start up,that problem is solved now, but now when a load is put on unit it will die

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Posted on Jan 02, 2017

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SOURCE: yamaha gen 3000iseb throttle surging @ start

Surging is not uncommon till warm and stable,

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http://www.endtimesreport.com/dead_gen.html

Posted on Nov 02, 2009

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SOURCE: I have a yamaha EF2400IS generator that starts

If it doesn't start but turns over ok. It may be a problem with the magneto / wiring or spark plugs. It seems as though this unit has no automatic shut down. I would try replacing the spark plugs BPR4ES NGK or equivalent and gap to .030, oil 5/30 or 10/30 will do takes less than 1 quart, & air filter (basic tune-up) if not performed in some time. Yamaha recommends every 20 hours. Then try again. Here is a link to the owner's manual. http://www.poweredgenerators.com/yamaha/manuals/ef2400is.pdf

Posted on Jul 24, 2011

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1 Answer

Capabilities of the Robin 2400is generator


no
ac units are 2000 watts minimum, washing machines are 1500 watts minimum, microwave is what is on the plate and start at 650 watts but most are 2000 watts
the 2400 is the peak out put for start up of fridge , washer etc and the running wattage will be 2000 watts or less ( duty cycle )
to run more than one of the nominated items at once you will be needing a 5500 to-6500 watts unit
they handle a start up surge of 6500 watts ( larger one) and will comfortably handle 5500 watts run full load
it works like this , the plate on the gen set is the surge short time load capacity of the genset and not the duty load which is 500 to 750 watts less than that plate wattage
for example your 2400 is is surge rated at 2400 watts but duty load is less than the 2000 watts
many people make the mistake of buying a gen set that looks big enough but do not calculate the maximum load capable on being put on the gen set
fully loaded uses more fuel /hr
wears out faster
has power surges as the extra load cuts in and the motor struggles to get back to required rpms for voltage and cycles
will not cover extras like lights ,
a much large gen set will take it all in it's stride , no power surges, better economy, less stress
talk with an electrician , do your maths on everything you wish to run and that which you forgot about then add 1000 watts to the duty cycle and that will be close to the gen set you require

Oct 17, 2016 | Electrical Supplies

1 Answer

Ef 2400 Is Yamaha generator Over Revs


Take it to a dealer, there is a solid state module inside that controls the charging and idle, also a wiring diagrams are available with owners manual, go to Yamaha web site also..

Apr 12, 2017 | Yamaha EF2400iS Portable Generator

1 Answer

How to fix surging on yamaha 2400 generator


If may be a partly blocked main jet ( Check by slowly closing the choke), if it the hunting clears out as you slowly close it it prob blocked main or pilot jet...
If the unit hunts (flutter)at 1/4 through 3/4 load, the governor damper spring on the throttle shaft under the stepper motor needs one more turn.. only after you've checker the carby..Only one turn or you will damage the stepper motor....one a few of these....

Jan 26, 2013 | RTO New Yamaha Inverter Ef2400is / Yamaha...

1 Answer

I have a yamaha EF2400IS generator that starts fine, but when i shut it down and try to restart it hot it will not start up again until it cools down. Please help.


If it doesn't start but turns over ok. It may be a problem with the magneto / wiring or spark plugs. It seems as though this unit has no automatic shut down. I would try replacing the spark plugs BPR4ES NGK or equivalent and gap to .030, oil 5/30 or 10/30 will do takes less than 1 quart, & air filter (basic tune-up) if not performed in some time. Yamaha recommends every 20 hours. Then try again. Here is a link to the owner's manual. http://www.poweredgenerators.com/yamaha/manuals/ef2400is.pdf

Jul 23, 2011 | Yamaha EF2400iS Portable Generator

1 Answer

My Yamaha Ef2400iS inverter shuts off when I use my 3/8th electric drill. This problem started last fall. I could use the drill and portable saw, not at the same time, since the inverter was new three...


yes, the problem is that electronic/electrical components age with use. especially voltage regulators and switching transistors. as they age they can no longer sustain the current you are demandiing from the unit. the units are designed to run in the middle zone, not at full maximum load all the time, if you do that you will weat it out quicker. Always buy a power supply that is double your intended wattage and it will last many years. Hope this answers your question

Mar 21, 2011 | RTO New Yamaha Inverter Ef2400is / Yamaha...

1 Answer

My EF2400iS surges under low loads. Seems to smooth out with larger load. Any suggestions? Throttle motor or control box?


Idle speed screw may need adjusting slightly to increase idle speed. Also Main jet and Idle mixture Screws may also be out of adjustment

Aug 23, 2010 | RTO New Yamaha Inverter Ef2400is / Yamaha...

4 Answers

Rpm surge with intermediate power load


The problem is the governor and is easily fixed. Do the following: Remove back and side panels to expose fuel tank. Insert screwdriver into fuel on/off switch on front panel and remove. Now remove top panel. To do this unscrew fuel cap, pull out fuel spill surround rubber and remove top panel, just pull gently. Now with fuel tank exposed, remove retaining bolts. Gently lift tank and rest on frame. No need to disconnect fuel line.On top of carby is the governor, protected in a black plastic shield. Unscrew the retaining screws that hold it to the carby. Remove electrical connection and then remove governor from carby. Now remove cover by pressing on the three retaining plastic clips and prize upwards. Now the solenoid is exposed. Remove solenoid from its base by unscrewing the two retaining screws. Now that the solenoid is fully exposed use an spray on electrical cleaner that can be used on circuit boards. Spray the base of the solenoid in particular the spindle. Whilst spraying the spindle rotate it a few times until it moves freely. Then replace everthing in reverse order. Where the spindle exits the solenoid dust particles collect and increase the friction between the two surfaces. If you do not want to proceed as outlined tell your dealer it is the solenoid and have it fixed under warranty.

Feb 02, 2009 | RTO New Yamaha Inverter Ef2400is / Yamaha...

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