Question about 2004 Yamaha PW 50

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Pw50 fires but won't stay running

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Hi, Jj9871 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. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting screw set too low.
8. Air/fuel mixture screw set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on blue links below. Good luck and have a wonderful day.
pw50 won start please help
My Son Has Yamaha Pw50 That Will Start But Won Stay Runn
https://books.google.com/books?id=ozV8-Aer4N8C&pg=PA84&dq=pw50+manual&hl=en&ei=TCS2TcbdJ4PW0QG0z9jmDw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CGUQ6AEwAA#v=onepage&q=pw50%20manual&f=false
OEM parts for Yamaha
Yamaha PW50 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Posted on Apr 25, 2017

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6ya6ya

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  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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ckoira57

ckoira57

  • 267 Answers

SOURCE: i have a yamaha pw50, it runs slow when cold &

Most likely a combination of sparkplug heat range (type of plug) and jetting, needle or air mixture settings in the carburetor. Assuming good condition of air filter and operation of the choke plunger. Are you using the correct octane fuel and fuel/oil ratio? Give the plug a clean and emery the spark contacts, set gap at 0.7mm., ideally take the plug to a Yammy dealer and check for correct range for your bike in the area where you ride.
Best to have a range of spare clean plugs handy for wet or hot days etc.
The jetting maybe dirty or wrong size too. In the meantime move the throttle needle clip down one notch. Refer to the site below for a diagram of the carburetor parts. Cheers.
http://www.cmsnl.com/yamaha-pw50r-2003_model11163/partslist/A-09.html

Posted on May 11, 2010

Azrael SRL

  • 11800 Answers

SOURCE: Honda, 80 elite with 41

First make sure that the bystarter is indeed functional: look at it, it should move when powered. Simple test to confirm that: remove the screws that hold the unit into the carb, and lift the choke slightly out of the carb body while cranking the engine : if it runs, then the carb is ok, choke is not. If necessary remove the air filter, put your hand in front of the carburetor to choke it even more and then start the motor.
If the engine dies even now then the problem is in the carburetor: either the idle is badly adjusted or the level in the bowl is too low.

Posted on Aug 04, 2011

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Pw50 starts but no power it wont rev.I have new carb,plug.clean filter.fresh gas


Hi, Anonymous and the usual suspects are:
1. Severely drained or faulty battery.
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Pw50 leaks gas


Hi, Anonymous "ABSOLUTELY" and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
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 carb won stop leaking fuel
Yamaha PW 50 checking carb
https://books.google.com/books?id=ozV8-Aer4N8C&pg=PA84&dq=pw50+manual&hl=en&ei=TCS2TcbdJ4PW0QG0z9jmDw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CGUQ6AEwAA#v=onepage&q=pw50%20manual&f=false
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Yamaha PW50Y Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


Jun 01, 2012 | 2005 Yamaha PW 50

1 Answer

Yamaha PW50 stalls when throttle applied


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
https://books.google.com/books?id=ozV8-Aer4N8C&pg=PA84&dq=pw50+manual&hl=en&ei=TCS2TcbdJ4PW0QG0z9jmDw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CGUQ6AEwAA#v=onepage&q=pw50%20manual&f=false
OEM parts for Yamaha
Yamaha PW50 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

May 27, 2017 | 2005 Yamaha PW 50

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