Rebuilding the petcock/fuel tap: Difference between revisions

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[[Image:FUEL_TANK.png|100px]]

~~====Checking the vent====~~

For the diaphragm to work properly, there is a small vent hole to atmosphere on the bottom side of the petcock. This has to be clear. After you disassemble the petcock, check for crud on both sides of the diaphragm. If there is debris on the fuel side, then a check of the complete fuel system would be prudent.

~~[[image:829814-2.jpg|150px]]~~

====Rebuild process====

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[[image:IMG_0032_labeled.jpg|150px]]

For the diaphragm to work properly, there is a small vent hole to atmosphere on the bottom side of the petcock. This has to be clear. After you disassemble the petcock, check for crud on both sides of the diaphragm. If there is debris on the fuel side, then a check of the complete fuel system would be prudent.

[[image:829814-2.jpg|150px]]

Make sure everything is nice and clean. Replace the o-rings on the diaphragm and lever body, then reassemble. You should now have a clean, leak-free petcock. The kit comes with a new o-ring for the petcock-to-gas tank connection as well.

You should probably change your oil now, before you start it up. If the petcock has been leaking into the oil, not only will you have too much oil, what's in there will be thinned out and much less effective. You don't want to replace major engine components just because of that.

@@ Line 42: / Line 42: @@
 [[Image:FUEL_TANK.png|100px]]
-====Checking the vent====
-For the diaphragm to work properly, there is a small vent hole to atmosphere on the bottom side of the petcock. This has to be clear. After you disassemble the petcock, check for crud on both sides of the diaphragm. If there is debris on the fuel side, then a check of the complete fuel system would be prudent.
-[[image:829814-2.jpg|150px]]
 ====Rebuild process====
@@ Line 89: / Line 83: @@
 [[image:IMG_0032_labeled.jpg|150px]]
+For the diaphragm to work properly, there is a small vent hole to atmosphere on the bottom side of the petcock. This has to be clear. After you disassemble the petcock, check for crud on both sides of the diaphragm. If there is debris on the fuel side, then a check of the complete fuel system would be prudent.
+[[image:829814-2.jpg|150px]]
 Make sure everything is nice and clean. Replace the o-rings on the diaphragm and lever body, then reassemble. You should now have a clean, leak-free petcock. The kit comes with a new o-ring for the petcock-to-gas tank connection as well.
 You should probably change your oil now, before you start it up. If the petcock has been leaking into the oil, not only will you have too much oil, what's in there will be thinned out and much less effective. You don't want to replace major engine components just because of that.