Check oil bolt

Lets talk about it here instead of cluttering up other threads?

Is it a "bleed" bolt...Haven't read any manuals that say it is. Only read that it is a "check oil" bolt.

*If they wanted my to use it every time then they should have called it the "loosen and check for oil flow every time you change your oil or your engine will blow up" bolt.

inspector wrote:

Lets talk about it here instead of cluttering up other threads?

Is it a "bleed" bolt...Haven't read any manuals that say it is. Only read that it is a "check oil" bolt.

*If they wanted my to use it every time then they should have called it the "loosen and check for oil flow every time you change your oil or your engine will blow up" bolt.

It's written in the owner manual. In the procedure to change oil. All the warnings you are asking for is indicated there.

Dancamp wrote:

inspector wrote:

Lets talk about it here instead of cluttering up other threads?

Is it a "bleed" bolt...Haven't read any manuals that say it is. Only read that it is a "check oil" bolt.

*If they wanted my to use it every time then they should have called it the "loosen and check for oil flow every time you change your oil or your engine will blow up" bolt.

It's written in the owner manual. In the procedure to change oil. All the warnings you are asking for is indicated there.

I guess the question is, what is written in the owner's manual? (I don't have mine here at work). Does it actually say to bleed the air out of the system with the bolt? Shit....I'll use it every time then!
If people want to use that bolt, fine by me. It doesn't upset me like things upset that so-cal dude, (lol).

Name me some other motorcycles or cars that have or use such a thing?

Why did my 14,000 rpm FZR400 not have something like that?
Why did my 11,500 rpm R1 not have it?

Why should I use it on my WR?

The Yamaha manual says I should shift gears way earlier than I do.
it also says not to change oil filter but once every 6000 miles.

What ? Huh ? Moi ? Upset ?

I have no idea what, and have never heard of the bolt you guys are talking about.

X-Racer wrote:

What ? Huh ? Moi ? Upset ?

I have no idea what, and have never heard of the bolt you guys are talking about.

Haha. No not you (I actually had to search for awhile cause I couldn't remember his screen name...surfer x (sp)...getting upset about wd-40

Doesn't say anything about "BLEEDING" to me?

I think the main use for that bolt is to check pressure. If your bike is running ok, don't worry about that bolt. The only thing your "bleeding" is the air out of that channel. I assume that channel you are "bleeding" just goes to that bolt, so it doesn't matter if there is a little air in there.

Sorry - here's the missing "A" part



It's an oil pressure check feature.

The oil system is not an airtight system. There will always be air present.
In the system, and suspended in the oil itself.

Perhaps there was not room to put a "idiot" light regarding oil pressure on that little dash. Besides when that light come on the R1 it isn't telling you anything about pressure. It's telling you your oil level is low. At any rate, it is one bolt. Don't have time for it? Fine. If you do? Fine. I have a cool swivel-head ratchet box wrench that fits it just right. I use that wrench any time I can.

The 08 (Wr25RX(C)) manual is slightly different, but there is a CAUTION note and it does say to check it after changing the oil.

Since I'm not one who can logically, or technically argue against the manufacturer's recommendation (and in particular a CAUTION note), my sometimes feeble mind says to do it. ~ shrug ~

What are the manufacturers recommended shift points?

I seem to remember the R1 manual recommending being in 6th gear by 60 mph or something of that nature.

Which was a gigantic laugh when first gear red-lined at 70mph.

^^^ Isn't this an entirely different topic. And, yes, manuals are very conservative in general.

Since this is a bleeding thread we can only talk about bleeding (oil, forks or bodies are all fair game) .

The point being that the manual recommends things....but that doesn't mean you have to follow the recommendations.

My only point is I'm tired of people cluttering up other threads with this


I understand some people use it, some don't. I will continue not to until someone is pointing and laughing at me saying "I told you so..."

* pointing and laughing at you * I told you so !

I told you NOT to!!!

Hell, this bolt is a PITA. Oil comes out of it making a mess and it might break. Come to think of it, I'm not changing my oil filter either. That makes a mess & that has three (count em 3) bolts with a proven reputation for breaking. You know what, as long as the bike is running good, forget changing the oil too. That's another bolt! I'm an American. Free to not follow the owner manual (or as I like to call it -- The Book of Lies). Don't worry if you're not from the U.S. I'll vouch for ya. Free yourself from the slavery that is bike maintenance. Revolution!

Anyone interested in buying my old socks? I no longer need to save them as future oil rags. I'm keeping the tools. My little voice says I should.

* wonder if I can get spanked by SheWolf if I take mine out * ...the bolt that is.

WROld: You are f'n hilarious ! .....but you ain't workin on MY bikes ! * LOL *

BTW: You think THAT is a mess, You have to actually BURP ( and that is exactly what it does !) on BOTH my KTMs (oil resevoir is in main downtube) ! Talk about a mess ! Sox ? F the sox ! I'm talking BEDSPREADs !

Evidently, I'm not even working on my own bike.

I've witnessed the KTM oil change. Made me check the calendar to see if it was April 1st.

WrOld: Relax... Don't do it. If you wanna get to it.

https://www.youtube.com/watch?v=lyl5DlrsU90

Inspector is there for you. ...and I'll help you clean up. * gag *

It might just be a potential problem. The kind of trouble that happens once a decade. But Yamaha installed a procedure that if the problem arises, they will be able to say they provided a mean to prevent this problem. Maybe a potential weakness.

Anyway if some want to follow the procedure it won't kill others that do not follow it.

X-Racer wrote:

* pointing and laughing at you * I told you so !

+1!
My take: Yamaha have designed & built a hi-tech machine that is robust, lightweight, & made to be revved/thrashed/driven hard. I am sure they have rigorously tested everything & estimated life expectancy/mileage etc. They also designed the service procedures, intervals & owners' manual. So, it is my belief that they know WAAAAY better than me what does or does not need doing. Therefore, I see the oil bleeding as a necessity.
I am also sure that someone on this forum is either a Yamaha employee or techie, or at least knows one. If so, can we PLEASE have a definitive explanation on what the bleed bolt does EXACTLY, & how necessary it is to follow procedure.
Thanks!