It has a briggs and straton engine and need to get the voltage higher
There are many different models of Briggs used however simple methed is to find the governor shaft. Attached to the small shaft will be a lever with the governor spring and linkage that connects to the throttle. One end of the governor spring attaches to the lever and other is attached to either an adjustment screw with locknut or metal tab that can be bent. Increasing the pull of the governor spring on the lever will cause the engine rpm to increase. Bend the tab to allow for greater pull or adjusting the bolt with locknut. Make sure that the engine is not turning much more than 3600 rpm. Use a digital meter with Hz setting to set the output cycles at 60. When set at 60 cycles the engine should be turning about 3600 rpm which is where the engine develops max power.
SOURCE: three year old coleman 5000/6250 generator. High
Your RPM's are too high. There is no voltage regulator in coleman generators (generator is actually made by generac) and is 100% dependent on engine speed. There is a screw under the tank when your looking in from the recoil side. It controls the governor arm. Screw it in and it incresses the rpm, out decrease. Plug something in that draws a decent load while setting the rpms since you want it to put out 120 and 240 underload. Your idle voltage does not matter.
SOURCE: Coleman 6250 Generator won't turn over
try removing the air filter and try starting if it dirty or to oily , no vacuum is created to pull the fuel into the carb
Testimonial: "I removed the air filter,then put air filter back on,it started for 2 mintes.I shut it off, but then allot of gas just spewed out of the air filter?"
SOURCE: Generator with Briggs & Stratton,no gas is getting in carburetor
The needle valve may be stuck which would not let gas into the carb. I don;t think rebuild kits are too expensive. Pull the carb and take it to a lawnmower repair shop and they should have the parts. Before that though pull the bowl and make sure it has gas in it. If no then remove the fuel line and make sure gas flows from it. If no then could be the fuel shutoff valve is not operating properly or junk in the gas tank is obstructing the line.
SOURCE: where can I get a manual for a Coleman 6250 Generator
go to the coleman web site here is the site for the free manual. http://lawnandgarden.manualsonline.com/manuals/mfg/coleman/coleman_portable_generator_product_list.html
SOURCE: Briggs & Straton 20 HP, two cilinder engine idle speed
Surging is usually caused by a lean condition You can try to turn the mixture screw ccw about 1/4 to 1/2 turn. If this does not solve the problem your carb will have to be removed, cleaned thoroughly, and reinstalled.
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