Question about 2001 Yamaha YZF-R1
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Carbs leaking Here is how to fix it
2000 2001 Yamaha YZF R1 Service Manual R1 Moto Data Project
OEM parts for Yamaha
Posted on Sep 02, 2016
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Posted on Jan 02, 2017
Well, a couple things may be wrong.
1) debris could be lodged under the needle valve. Remove the float by gently slideing the float pin out, the needle will either slide out with the float or remain in the seat and a pair of needle nose pliers will help to retreave it. clean the seat and inspect the needle valve for damage.
*note that even the smalles debris can keep the needle from seating so take care during reassembly*
2)depending on the type of carb cleaner used, and the exact type of needle valve in your carbs, the needle valves may have been dammaged during the cleaning. Some carb cleaners can "eat" neoprene or rubber components in carbs. It is always best to fully disassemble them before cleaning, if you are not confident in your ability, have a pro do it for you.
The solution for this is to remove the needle valve as above, and inspect the needle and float for damage. **If in doubt replace the needle valve**
Posted on Mar 25, 2010
You probably have a stuck float needle or a float needle that missed the hole check the leaking carb again. It could be a piece of dirt on just the one float needle or worst case scenario a sunk float(you have to test them by floating them in a cup of gas.).Note: black plastic/foam style floats are susceptible to saturation sinking when used in ethanol fuel (gasohol). If this happens you have to replace the float.
Posted on May 16, 2010
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