20 Most Recent Yamaha 1,000 Watt Portable Generator #EF1000ISC - Page 3 Questions & Answers

voltage regulator not producing volts for the exciter windings of the alternator

https://www.manualslib.com/manual/770551/Yamaha-Mz175.html

10W-30 will be OK. Try not to overfill it. I use synthetic in all my small engines.

Since most generators are seldom used, gas left in the carburetor gunks up and stops up the passages. Take lots of pix of the assembly. Pull the carb, remove the bowl and spray carb cleaner in all the holes you see. Don't let it back spray into your eyes. Wear safety glasses. Some holes/orifices may need to have a soft wire passed thru them. Next time you store your generator, drain the gas, run the generator til all the gas is out of the carb. If you can get to the bowl w/o removing the carb, pull the bowl and spray the bowl and underside of the carb w/carb cleaner and reassemble.

50:1

first check the battery

I havea PDF version but I don't know how to send it you. You may be able to download it from ths linkhttp://www.ownerservicemanual.com/871-owners-manual-for-yamaha-ef2000is-generator.html

The oil level may be too high check when you to take oil dip stick out, the oil level should be about 3/4 below the top of the threads..

Check the rubber line going to the carb, the clamp is bad for the hose

they are avaible on the internet , Babbitts Yamaha Parts house has all parts online

start engine with no load first and warm it up , they run high rpm about 2400 or more with no load..

Yamaha 6300 will produce 45.8 continuous amps using the 240 volt position , I use converter plug to a 50 amp 4 prong plug You did not specify the amps of your compressor but 25 amps on each 120 volt leg, equals to 50 amp 240 and I guarantee your compressor does not use that much. The 6300 weighs 200lbs and can be bought at National Supply on the internet delivered the cheapest of all suppliers 1-877-316-3954

You will need to take the carb off to investigate the reason. If you need parts you can find them on this page: https://www.generatorguru.com/yamaha-1/

Check the coil as suggested also check the cooling system of the unit.

I have same generator. Will not start. Good spark, good fuel, good carb. Compression is 60 psi cold. Is this good? Bad? I can't find anything on what compression should be.