Question about 2007 AJP PR4 200 Supermotard
It’s a Main/Reserve fuel valve. Its purpose is to select which of two tubes the fuel pump uses to get fuel from the fuel tank. One of the tubes is at the bottom of the tank; the other is about an inch higher. The normal “On” position gets fuel from the tube with the higher opening. When it runs dry you switch to “Reserve” which gets that last gallon or so from the bottom of the tank. That gives you enough range to make it to the next gas station for a fill-up. ,
Posted on Nov 10, 2008
SOURCE: fuel petcock
The petcock is what the fuel flows through when it comes out of the gas tank. It probably includes: * A switch with positions for On, Off and Reserve. * A fuel line going to the carburetors. * A vacuum hose attachment which attaches to a carburetor which tugs on a rubber diaphram to let gas flow through. * An overflow/drip valve from the vacuum area. It's located right under the tank on the rear/left side.
Posted on Nov 10, 2008
On your silverwing you have a "vacuum operated petcock" which means that the carbs draw a vacuum and allow the fuel to flow from the petcock. The front hose is the vacuum hose that should run to the center of the carbs. The second is a drain hose - it's advised that you do have a small hose connect here, so that dirt does not find its way into the petcock. This hose will simply run down past the swing arm to the ground. This would prevent any gas from dumping itself onto the engine if your petcock fails. If your bike runs without the vacuum hose attached, your petcock has failed and will need to be rebuilt.
Posted on Jun 15, 2009
yes, the breather line hooks to the petcock on the line facing the back, the fuel line hooks to the larger one. the line from the breather is actually a vacume line that turns on the fuel, without it you will not get fuel out of the petcock unless it is in the prime position.
Posted on Jul 04, 2009
Replace the petcock. The rubber diaphragm is ruptured. I'd also bet your fuel mileage dropped cause the ruptured diaphragm is allowing raw fuel to be sucked into the intake manifold.
Posted on Jul 23, 2009
Replace petcock assembly and any gasket to tank. Not an item you want to play around with too much because of risk of fire.
Posted on Jul 26, 2009
On the one that has two hoses does it still have an "Off" position? Usually petcocks that have two hoses, one goes to the carb vacuum, and the other is for a fuel supply for the engine. That way it only allows fuel to flow when the engine is running. I have found these to be a poor design and can often leak and allow fuel to run into the engine if your carbs are acting up. If the replacement only has one hose, then it will work fine, just be sure to cap off the vacuum port on the carb.
Posted on Sep 24, 2009
Tips for a great answer:
Apr 17, 2016 | Motorcycles
Nov 29, 2013 | 2011 Bajaj Pulsar 150
Jul 30, 2011 | 2000 Harley Davidson XL 1200 C Sportster...
Jun 01, 2011 | 2001 Harley Davidson XL Sportster 883...
May 16, 2011 | Harley Davidson FLSTF Fat boy Motorcycles
Jul 15, 2010 | 2000 Harley Davidson XL 1200 C Sportster...
Jun 17, 2010 | 2003 Harley Davidson XLH Sportster 883...
Apr 01, 2010 | 2001 Harley Davidson FLSTF - FLSTFI Fat...
Mar 31, 2010 | 2000 Harley Davidson FXDWG Dyna Wide Glide
Nov 17, 2009 | 1981 Yamaha XJ 650
185 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: