Runs rough when choke pushed all the way to run position
The generator starts easy when in full choke. When the choke is pushed half way back, it runs well. However, when choke is pushed further towards run position, it begins to choke out. At first, it cut off, and now it runs rough in that position. Generator only has 2-3 hours of run time.
Also, I bought this generator from Home Depot--it had previously been returned and had no manual. Where could I get a manual for this Coleman Powermate 5500 which has a Yamaha MZ300 motor.
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Hi Joe, I had asked for a little clarification and have not received any information. I will answer this question based on the generator is in good working order and it is a recoil start. Open the petcock, (this is the fuel valve) and give it about a minute to fill the fuel bowl on the carburetor. If your generator has an engine an on/off kill switch, set to on. If the generator has an auto idle switch set it to off. If the engine has a throttle lever located under the carburetor, push it all the way down (full throttle). Pull the choke knob out completely, there is a detent on the choke for half choke, pull it past this for full choke. pull the recoil starter rapidly. As soon as the engine starts running push the choke knob to half choke, this will allow the engine to run smooth while it's warming up. Depending on the climate that you are in, warm up time will vary. After a minute or two in cold climates start pushing the choke knob in, if it starts to run poorly pull it back out too the half position and let it warm up some more. When you can posh the choke in without the engine faltering it is ready to go. In warmer climates you might be able to start the engine without the choke or in the halfway position. Robin Subaru makes some of the finest small engines available. I would choose a Robin over a Honda every time. I hope this gets your generator going, and once again this is based on the generator being in good working order. Good luck, Michael Burke.
if you are running the engine at full CHOKE, then it is flooding the engine, but if you meant off full choke, then the carb is still stopped up. Try soaking in carb cleaner overnight after removing jet & all rubber goods. HOPE THIS HELPS.
Most Generac generators have a lever for the choke that pulls out. So if the generator is being started for the first use or cold you should choke when starting . Let it run for 30-45 sec. then push it in . Once the engine has been run or warm you dont need to choke every time when starting .
1. Fuel selector: ON
2. Start run sw: ON
3. Oil Level : Full
4. Choke selector FULL ON for no more than 2 pulls initially The half choke then off
5. Spark at the Spark Plug YES? NO?
a. No spark suspect low oil level sensor is grounding the ignition either due to low oil level or it just is not working properly.
After doing all of the above...
Spark Plug WET or DRY? Dry and still won't start check fuel supply. If you use the choke with the start run switch in the off position the spark plug should get WET. Spark plug does not get wet... with choke on and ignition off. Fuel supply problem.
At this point I suspect either the Oil Level is incorrect or... that the FUEL SELECTOR is OFF.
If you need more help just respond here and we can press on.
This sounds like a problem with fuel settings or dirt in the jet.
If you can find the carb adjustment screws, with it runing on full choke - screw it in fully untill it stalls, then back out to original position, then restart.
Take off choke and adjust setting untill it runs well when warm with choke fully out.
You can then try and make it run leaner without stalling.
Fresh fuel? Does carburetor have adjustable jets? Turn the high speed jet (at bottom of float bowl) about 1/4 to1/2 CCW (looking at bottom of bowl). If no improvement, carburetor should be torn apart and cleaned. This also applies if there are no adjustable jets. Is there a fuel filter anywhere?
It sounds like you are not getting enough gas. I think it's the diaphragm, When you take it off of the choke diaphragm controls the gas flow, apparently yours is just shutting down. It's very inexpensive, and very easy to replace. Good Luck :)