My guess and the most common complaint on fixya -
the gas was left in the engine from the last use and turned to gunk.
Drain the old gas. Clean the carb.
If it will run for a little after removing the air filter and putting a couple of quick squirts of starter fluid into the carb, it means the carb is gunked up and all the orifices need unstopping.
SOURCE: Makita G11oo portable generator. starts on choke. cuts off run
Just noticed your question... If you still need a little help:
1. If the gas is from last year, drain the tank and the carb bowl and replace gas with new. Visually inspect the inside of the tank ..be sure there's no sediment that needs to be cleaned out.
2. remove air cleaner and make sure it's not plugged or dirty
3. plug the spark plug and clean with spray carb cleaner.
4. At end of season, mix some gas stablizer in with the fuel to keep it from going bad while in storage.
Let me know how it goes..
k
SOURCE: I have a G5500R Makita
hi there
pauly46 here
sounds like you will need to remove carby and give a good clean and soak for a while
to remove to green gum / varnish causes blockage of passageways and fuel needle valves to stick and remain open / or closed as well as making it run funny if it runs and flood as you mention
note do not soak any longer than 20 to 30 mins in a carb type cleaner solution as these can attack
non metallic parts and runin them , use compressed air to clean passageways and jets
blow some brake cleaner through them to , if the unit still floods after this , replace the fuel needle valve and seat
here is web site for parts list and parts ordering on line
http://www.ereplacementparts.com/makita-g6100r-generator-parts-c-97_683_688.html
its a god site take look
hope this helps
cheers pauly46
SOURCE: My Makita G5500r power generator doesn't have smooth Idle?
sounds like the carb needs to be cleaned inside any fuel the was left in the carb goes bad and it never runs it all out
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