Question about 2005 Yamaha PW 50
I've read the liested issues on the site and will check to see if there was a resolution to the problem since mine seems to be the same. It starts but if you rev it, it will kill. Another noticed problem is that after it starts and I move the switch to run and let it warm up, it will kill if I take the choke off which last year was the case, but it didn't kill and seemed to run ok. Tried the spark plug, the air filter, and taking the baffel out of the exhaust with no luck.
Hi, Rick and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Vacuum line from the petcock to intake manifold cracked.
5. Float needle and seat sticking.
6. Float level too low.
7. Carburetor bowl vent line clogged/blocked/pinched.
8. Idle adjusting screw set too low.
9. Air/fuel mixture screw set too lean.
10. Idle port, transfer ports, slow air jet clogged.
11. Slow fuel jet clogged.
12. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on the blue links below. Good luck and have a wonderful day.
pw50 bogging down
PW50 won rev lots of things tried
OEM parts for Yamaha
Yamaha PW50 Owner Manual
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Posted on May 27, 2017
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Posted on Jan 02, 2017
SOURCE: pw50 problems stating bike
hey there matey,, just to run a few things with,, have u taken the spark plug out and cleaned it up,,try a new plug 1st,, to be sure, or if u have a new plug,, take out the spark plug place it back in its cap and rest it on the cylinder head and either elec start it or kick it over and make sure u have a spark ,, if all is ok on the above,, then turn to fuel and carburetta, make sure fuel is gettin to the carb 1st,, but u say u do eventually gettin it goin ,,then theres a blockage in jets ,,undu the bottom of the carb clean out the bowl, ,in the carb u will see a brass jet, un screw that and the needle guide that the jets screwed in to and using a pin or needle,poke the small hole clean so u can see light threw them,, bung it all back together and pray,, if no joy il get back to ,, ok m8, enjoy
Posted on Jan 10, 2009
Sounds like the plugs are fouled out, I would pull them and make sure they're about the color of a paper bag. If they're all sooty and wet you most likely have a rich condition. I would take the carbs out and clean everything and pop in a new set of plugs. I have a 87 Fz600 that was acting up until I cleaned the carbs.
Posted on Apr 20, 2009
Dawn it is running lean if it will run on 1/3 choke when you choke it like that it actually restricts the air flow into the carburetor my suggestion would be to remove the carburetor and clean it real good and try that first before going anywhere else
Posted on Apr 21, 2009
I have been working on my carb today,the pipe from the bottom of the carb should just run down by the bottom of the swinging arm,there should be another pipe from the pipe on the left side of the carb just above the fuel intake which also runs down to the swinging arm and connect to nothing.
Posted on May 30, 2009
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