It seems to be the standard that the rating or model ??1000 or ??1500 or ??2500 or ??5000 or??5500 or ??6500 is the kv rating of the gen-set regardless of straight or inverter
so if yours is EF1000 it will be 1000 watts or 1 kv
remember that most electric drills are 1000 watt units so a unit this small is mostly good for lights, charging batteries, small compressors for tyres
SOURCE: I have a Yamaha EF1000is
Not sure exactly what you mean but here is what I know:
1 - You shouldn't have to use any choke at all once the engine has started and warmed up, if you have to apply some choke to get the engine to run correctly then you have a carb problem. Clean and service the carb and see if that makes it all better.
2 - The idle speed is set by a small screw on the body of the carb itself, if it's set too low the engine can shut off rather than idle. Make small adjustments until you get it right.
3 - Dirty air cleaners can cause problems with idle
4 - fouled and/or misgapped spark plugs can cause idle problems
Please rank this answer,
Carl
SOURCE: Yamaha EF1000is, Will no run without choke on
It is starved for fuel. PROBABLY needs to have carbureator cleaned and adjusted OR the fuel filter may be clogged.
Testimonial: "Thanks for the help, it turned out that the intake jet was totally plugged. Cleaned it out and it runs great."
I have find the service manual with internet:
Standard compression pressure:
400 kPa
(4 kg/cm2 , 57 psi)
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