Question about 2004 Yamaha PW 50

1 Answer

Pw50 will not rev out and will hardly move when riding

Carb cleaned new plug is there some kind of adjust on the auto trans

Posted by Anonymous on


1 Answer

Gregg Mahin

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    One Above All:

    The expert with highest point at the last day of the past 12 weeks.

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.

  • Yamaha Master
  • 63,338 Answers

Hi, Anonymous and the usual suspects are:
1. Severely drained or faulty battery.
2. Faulty regulator/rectifier or high output coil.
3. Faulty power valve, solenoid or installation.
4. Clogged air filter or exhaust.
5. Cracked or incorrect float level.
6. Float needle is not seating.
7. Faulty reed valve.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
PW50 won rev lots of things tried
DOWNLOAD Yamaha PW50 PW 50 Pe Wee 2007 2012 Service Repair Manual...
OEM parts for Yamaha

Btw, I’m available to help over the phone in case u need at

Posted on Jan 09, 2017


5 Related Answers


  • 9 Answers

SOURCE: 2005 yamaha yzf 250-unstable idle

I had the same problem, Turns out that my shims were finished, replace the chims and check clearences.

Posted on Mar 12, 2009



  • 3567 Answers

SOURCE: Hyosun Scooter Carb Adjustments

Very good thought process on the adjustments. The throttle screw sets the idle speed and the air screw sets the fuel mix at idle speed. The stock setting is 1.5 turns outward. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward.

From this point you adjust the idle speed then adjust the air screw for fastest idle speed at that throttle screw setting. If the idle speed becomes faster than desired after adjustment, just reset the throttle screw and then reset the air screw.

A “very helpful” rating for this answer? Thanks!

Posted on Jun 27, 2009


  • 33 Answers

SOURCE: banshee wont rev

Usually related to TORS, specifically the safety switch in the clutch/park brake assembly. If it's defective the engine won't rev. Solution: look for a TORS removal kit.

Posted on Aug 21, 2009


  • 3567 Answers

SOURCE: my gilera stalker 50,will rev out on the main

Sounds like an air leak between the carb and cylinder. This would lean the fuel/air mix causing a lack of power on hills. It can also cause the bike to rev up by it's self on idle and flat surfaces. If the bike is not over 3 years old you should be able to tighten the manifold clamps and then tighten the manifold mount bolts. The rubber should still be soft enough to re-seal the connections. If over three years old the rubber seals and manifold connections are probably hard and cracked and will no longer seal properly. Just get new seals, gasket, and rubber manifold and you should be back in shape. If not, it is possible the crank seals are the problem. They can go bad and lean the mix. I mention the seals last because it is not an easy fix. I hope this helps.

Posted on Jan 23, 2010


gavin jones

  • 1508 Answers

SOURCE: Pw50 starts first time everytime but will not

PW have the stop\start\run switch and will not rev in the start position, there may be a problem in this switch, wire, or the ignition box which controlls this.
The small 50s can also build up carbon in the exhaust port, or the exit end of the muffler.
They also need the original air filter and cover (dont know why, but they wont rev without it).
I realize you may have checked some of these, but not much else goes wrong

Posted on Jun 08, 2011

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

800 ford tractor won't start new plugs wires new points new condenser,new coil has fire to plugs timing is correct rebuilt carb turns over good if fully choked almost starts

Spray starter fluid (something flammable) in the carb and see if you can keep it running. If you can keep it running that way, your carb is not clean, not set up properly, mis-adjusted or ???

Sep 25, 2017 | Ford Garden

2 Answers

Why does my 1964 ford fairlane 500 3 speed manual trans. Run rough when not under load.

Hey Fred, I AM SOOOOO JEALOUS!!! My teenage years Saturday nights were spent in a 64 Fairlane...(4 speed - 390 - WOW!!)..
Any way.. your carb needs some TLC, a valve clearance setting-get a qualified pro to do this!!), new spark plugs (wires maybe) .. a new air filter.... mainly the carb needs a QUALIFIED PROFESSIONAL to clean and set it once you have put in the plugs/air filter.. This will eliminate possible rough idle issues and give the mechanic peace of mind when he is adjusting the carb.
Good luck...

Jul 04, 2017 | Ford Cars & Trucks

1 Answer

My stihl fs56 strimmer will not start,i have a spark & fuel new plug cleaned carb help please

if you have spark and fuel then id be looking at lack of compression.. damaged piston ring or damaged crank seal/gasket

Apr 15, 2014 | Stihl Garden

1 Answer

750 virago 1983. Dying after giving it any throttle

If the bike has been sitting awhile it more than likely needs a carb clean. But don't do a carb clean by putting any kind of cleaner in the gas. It will just plug the jets that much more.

I’m happy to assist further over the phone at

Nov 12, 2013 | Motorcycles

1 Answer

I put new fuel new filter cleaned carb and replaced enrichener, checked for power to enrichener, and was good, if I hand choke or use starting fluid it starts but is cold blooded but then runs fine wh

The blast almost doesn't need the enrichener unless your trying to start it in 30 degree weather. I would think that you have a fueling issue - carb air passages are plugged. There is a lot to cleaning a Keihn CV carb correctly. if not done the right way it will act just as you describe.

May 04, 2012 | Buell Blast Motorcycles

2 Answers

My 88 blazer won't shift out of first gear until its up to 35 to 40 mpg, its a 700 auto. Any suggestions

Check all your vacume lines for leeks.If there are no leeks then may have a bad modulater.There will be one vacume line that goes down your fire wall to your trans.Where the vacume line plugs in,this is your modulater and controls your shifting.The part runs anywhere from $10-15 for a new one and most just screw into the trans or have a fork retainer with a single bolt.This only applies on gas motors.Well good luck and hope this helps.,

Apr 21, 2010 | 1988 Chevrolet Blazer

1 Answer

Will cleaning my Troy-Bilt TB25CS carburetor heal it?

Since the air from the air filter does not go through the carb, the carb cleaner will not either. If you remove the carb and spry all of it that you can get to, you may get the plug. If you were to open the carb and go through it and clean it you would need to get new gaskets and maybe that will do the job. You may be able to adjust the carb. There is a "hi" and "low" setting. Try adjusting the "hi"...Lee

Aug 24, 2009 | Troy Bilt Tb70ss Gas Trimmer

2 Answers

Car wants to die at idle and slow rpm speeds

Got a quadrajunk carb on there? If so, unscrew the needle valves in the front of the baseplate and spray carb cleaner into the ports. Put them back in and turn out about two turns each. adjust back and forth to get the highest vacuum reading, then use a tach to get the best steady idle.Do this with the advance disconnected and plugged, adjust final idle speed with linkage adjustment.

May 23, 2009 | 1979 Pontiac Firebird

Not finding what you are looking for?
2004 Yamaha PW 50 Logo

Related Topics:

1,018 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts


Level 3 Expert

3063 Answers

Neil Lancaster
Neil Lancaster

Level 1 Expert

14 Answers


Level 3 Expert

501 Answers

Are you a Yamaha Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides