Question about RTO New Yamaha Inverter Ef2400is / Yamaha Generator Ef2400 / Perfect For Camping, Emergency Home Use, Construction Sites And More!
The generator ( yamaha ef2400is , new 10 hr use ) has a throttle surge (many times a minute) when under intermediate load >< 1000w .most annoying and dissapointing .
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.
Posted on Feb 14, 2009
Had the same problem on mine. Tried the Solenoid fix but didn't work. Took it to a lawn mower repair shop. They cleaned the carb for $55 and it runs perfect.
Posted on Dec 05, 2009
Lubing the solenoid as outlined by ggsquiz solved the problem I posted on April 25, 2009. It runs really well now.
Posted on Aug 06, 2009
Mine was doing the same thing and it turned out that one of the carb jets was slightly blocked. Once the carb was cleaned it ran great at low wattage but it exhibited the throttle surge problem at around 1500watts. The throttle motor assembly was diagnosed as being the cause. We'll see if that fixes this issue. Stay tuned
Posted on Aug 05, 2009
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