Question about 1981 Yamaha XJ 650
I have a yamaha pw50 it runs slow when cold & takes about half an hour to warm up & get up to speed. Does anyone know why it would run slow when cold? thanks
Posted by Anonymous on
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.
Posted on May 11, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
May 18, 2014 | 2004 Yamaha PW 50
Nov 12, 2013 | 2008 Yamaha PW50
Sep 28, 2013 | 2004 Yamaha PW 50
Apr 14, 2012 | 2004 Yamaha PW 50
Apr 09, 2012 | 2004 Yamaha PW 50
Apr 09, 2012 | Yamaha PW 50 Motorcycles
May 27, 2017 | 2005 Yamaha PW 50
Feb 21, 2012 | 2005 Yamaha PW 50
Nov 15, 2011 | Yamaha PW 50 Motorcycles
Mar 16, 2010 | 1981 Yamaha XJ 650
477 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: