Question about McCulloch 13HP 338 Cc Portable Generator # FG6000MK
The problem seems to be worse when the air temperature is 50 degrees or above.
Posted by Anonymous on
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Posted on Jan 02, 2017
This is a typical problem with small engines that are not used often or only used seasonally
The problem exist when it is not prepped for storage properly, meaning that the fuel is not shut off and the engine allowed to burn off the remaining fuel that's left in the carburetors float bowl, causing the un-spent fuel to sour and later creating a condition called varnishing which clogs the carburetor venteries
All of these steps will require the use of skin and eye protection!!!
The solution is to replace the old fuel in the tank with fresh, its not a bad idea to replace the fuel filter at this time, then with the petcock in the off position remove the carburetor float bowl, inspect the gasket or seal for imperfections (replace as needed) and clean it along with the float assy. and piston check valve with a spray type carburetor & choke cleaner and gently wiping with a clean lint free cloth so as to remove all yellowish colored varnish and any debris, before reassembly place a glass or metal catch pan or bowl under the carburetor and turn the petcock to the on position to allow fresh fuel to flush out the fuel line and now LIGHTLY & GENTLY (without resistence) lift the float up, the fuel should stop flowing. If it does not stop, repeat cleaning procedure. If it does turn the petcock to off and reassemble. After reassembly turn the petcock to on, the engine should run.
Another preventive step is the use of a product called STA-BIL fuel stabilizer
Posted on Feb 20, 2009
You need to trace out the power wires the come out of the genset. They will end up on a breaker. With a volt meter measure both sides of the breaker. If one side has voltage and the other side doesn't, then your breaker is opened. Press the breaker in closed to see if it actually closes. If it don't then you will need a breaker. However, if no voltage is being produced, it is possible that the voltage regulator let go.
Posted on May 09, 2009
SOURCE: McCulloch 11HP FG6000MK surging
I just came across this post. Hopefully you have it solved. But for others who may run into this problem here is my advice. This model has a low oil sensing system. Over time the oil breaks down or gets contaminated. This can cause sympoms very akin to carb issues. I'd check this 1st as its the easiest fix. Drain and replace oil to the factory recommended specs. Make sure it is to the proper level. Your not finding any carb issues makes this almost a sure thing. DO NOT DISCONNECT or DISABLE the sensor or you defeat its purpose.
Posted on Jan 12, 2010
Have Generator McCullough FG 6000 was running fine motor still running fine than NO power output, any suggestions ?? Can you get replacement parts and repair diagram off the interent ??
Posted on Jul 12, 2010
The spark coil is bad if you have no spark
Small engine repair. Part is expensive.
Have you checked spark for sure?
1) Spray WD-40 directly into carburetor
If machine has spark, it will fire
2) Is exhaust port clogged with carbon and dirt?
3) Get new spark plug
Pull out old spark plug
Put spark wire on plug
Hold spark plug wire with fingers
Put spark plug threads against metal opening where spark plug came out.
Metal to metal
Pull cord or push starter
Look for spark between metal
No spark, then spark coil is bad.
Posted on Oct 26, 2010
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