Question about 2005 Yamaha PW 50

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My sons pw50 was running fine then all of a sudden it stopped, I tried to kick start it again it will kick over but not engage, help

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  • Yamaha Master
  • 59,350 Answers

Hi, Dan and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Air/fuel mixture screw improperly adjusted.
10. Accelerator pump damaged or not working.
11. Water or dirt in the fuel system, carburetor or filter.
12. Restricted, blocked or kinked fuel line.
13. Fuel tank empty.
14. The gas cap is not venting properly or fuel tank venting system blocked.
15. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
16. Needle and seat stuck closed in the float bowl.
For more information about your issue and valuable "FREE" downloads that you need please click on the links below. Good luck and have a nice day.
Yamaha pw50 wont run Please help
pw50 won start please help
yamaha pw50 service manual pdf free
OEM parts for Yamaha
http://www.yamaha-motor.com/assets/service/manuals/2009/lit-11626-22-24_pw50_1574.pdf

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

Posted on Feb 03, 2017

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Posted on Jan 02, 2017

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tellme2

terry weightman

  • 137 Answers

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

sisadsl

gavin jones

  • 1508 Answers

SOURCE: hello my sons pw50 petrol off and on switch,the up

those tricky japs
could be o off s start or o on s stop
from memory up is off and down is on , with the lever following the direction of flow


just pull the hose of the carb and turn the tap to find out for sure. if nothing come out either remove the tap and clean it

Posted on May 02, 2010

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Pw50 fires but won't stay running


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.
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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

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My car died at a stop light. When I try to start, it cranks very well but no kicking over.


This may be a long shot, but if the vehicle was running well before stopping, and you stopped rather suddenly, the fuel pump shut off may have been engaged. It's made to stop fuel flow in the event of a minor accident, but if the switch were rather touchy, it may have triggered. Not sure where it's located on your vehicle- check manual. On many cars, it's located behind the passenger side kick panel.

Good luck.

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Hello my sons pw50 petrol off and on switch,the up position has the letter s the side position has an o do they mean start stop off on can you help?


those tricky japs
could be o off s start or o on s stop
from memory up is off and down is on , with the lever following the direction of flow


just pull the hose of the carb and turn the tap to find out for sure. if nothing come out either remove the tap and clean it

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I was riding my rmx 250 and it suddenly died! i kicked it again and started and died again. i tried to start it again and the kick shift wouldnt move. what would cause this


Suddenly stopping then starting momentarily again sounds like dirt in the gas to me. It may be in the tank or the filter or, gosh, any place between.

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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

Jan 10, 2009 | Yamaha G5 Motorcycles

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