I just picked up my raptor petcock with the number 5LP-24500-01-00. I saw on ebay they were selling raptor 660 petcocks with the number
5LP-24500-00-00. Is it the same thing, or is there a difference? Also the petcock has a clear rubber tube around the white plastic screen on the end of the brass piece. The clear tube is open on the end to let gas in. The parts guy said leave it on there ? Is that right? Thanks!

on Evil Bay you have to be careful,  you can never tell what it really is till it actually lands at your house and you open the package.

R.F.

...
I know I'm right!...
I'm as right, as that parts guy is wrong... ...

You should go back to that guy, and give him the clear tubes, and say...
"I thought you might want these for your bike, because if yours is running,... you don't have any on there right now"...
...

rl153 wrote on 04/09/13 at 12:46:48:


They must be recruiting "parts guys" from an employment agency that hires people with no mechanical background.

The clear tube only protects the plastic filter during shipping.  I have also received one with a white foam sleeve that fit around both tubes.

The tube has to come off before installation.....as others have said.

i'm convinced, i'm glad i asked. any body know about that other number petcock they sell on ebay ,that i mentioned in my previous post?

JPSBOBBER wrote on 04/11/13 at 05:47:30:


The stock vacuum petcock works just fine......most of the time...... and it is very convenient.  If the diahpragm fails, it can create symptoms that are hard to figure out.   It can run fuel into the vacuum hose and make the bike run rich, it can flood the air cleaner with fuel.....or it can make the bike stop running if it does not flow fuel properly.  It can also fail to operate properly when engine or air cleaner mods change the amount of engine vacuum availalbe.

There are plenty of stock vacuum petcocks that are working just fine, and there are about 1-5 postings here a month that end up being caused by faulty vacuum petcocks.

For a lot of us the replacement of the stock vacuum petcock with one form a Yamaha Raptor 660 is a step forward in reliablity.

Do you plan to mod your bike?  New exhaust pipe that is less restrictive?  New air filtration system that is less restrictive?

Uncorking your bike to get to the last 10 hp that the factory wouldn't give you throws off the vacuum level and makes the factory vac petcock work more unreliably.   It will die eventually anyway due to hardening/cracking diaphragm, etc, but playing "get more power" games that alter the vac level that supports it makes it go whacky a lot sooner.

People do sometimes replace the vac petcock system as a pure reliability issue "pre-emptive strike", but note they also are generally the same folks planning on modding their bikes anyway.

The hard fact is, once you know the trouble symptoms of  vac petcock failure you are on the lookout for them and when they first occur a Raptor petcock gets ordered.

Look here for symptoms.   Don't just skim it -- READ both pages carefully.
 http://suzukisavage.com/cgi-bin/YaBB.pl?num=1251932429/1

Start with a restrictive stock air filter and an engine sucking hard at it -- vacuum suction level is high at the take off point on the carb.  Petcock system works as designed, more or less.

Replace filter with low resistance system, more air flows more freely, vacuum suction is lower at the take off point.   System becomes marginal, as you have monkeyed with the input vac level some.

The vac petcock operates off the air pressure differential between the carb intake tract and the outside ambient air pressure.

Effect of a free flowing pipe is more vague and is likely less important than changes we do to the intake side.