YBR125 Fork Cap Socket Size

[Mark65]

Hi
As the title, does any one know the correct size i have one in 11mm but its abit too small. I plan to change my fork oil and spring preload this weekend so i need to buy the correct size, its a female bolt, also the italian sevice manual i have says 0.154 litres of oil or 0,136 imp qt which doesnt sound like a lot really?, then it shows a diagram of fork oil height suggesting 166mm from top of tube?. Can any one confirm this pls?. And would a litre bottle of fork oil be enough for both forks?.
Thanks for any help.

Mark
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07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[ms51ves3]

154ml is sod all. My TZR takes 444ml.

Get a tape measure out and measure flat to flat. You say it is a female bolt so I assume it is an allen head then?

If so once you have the size, if you don't have an allen key for it, go and buy a bolt and two nuts with the right size head, tighten one nut up against the bolt head and another nut up against the first nut and then use a spanner on the first nut to undo the cap.

[neil.]

14mm hex plug. Quite hard to come by from places like Halfords. Had to order one on eBay which was a 1/2 inch square socket. I also needed an adaptor to go between 1/2 inch and 3/8 inch as all my stuff (torque wrench, breaker bars, extensions etc are 3/8. Did my fork oil today as it goes.

You could probably use this if you have a normal 17mm socket in your collection: https://cgi.ebay.co.uk/DRAIN-PLUG-KEY-14mm-HEX-17mm-HEX-1575-SUMP-PLUG-TOOL_W0QQitemZ370269546901QQcmdZViewItemQQptZUK_Hand_Tools_Equipment?hash=item5635c8e995

I used this: https://cgi.ebay.co.uk/NEWSOME-14mm-Hex-Key-Socket-Allen-Bit-1-2-Drive_W0QQitemZ290355349870QQcmdZViewItemQQptZUK_Hand_Tools_Equipment?hash=item439a87096e

Edit: yes each fork takes 154cc of oil (same measure as ml) and 166mm is the right measurement when the inner tube is not extended. I used 0.5l of Castrol Fully Synthetic 10W.
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CBT February 2008 | A2 June 2008 | Yamaha YBR125 (written off) | Honda CBF125 (current)

[neil.]

Also, seriously get the Haynes book, it knocks socks off the service manual. I can't rate it highly enough. I tend to cross reference both books if I'm not sure on something. I have the English (rather than Italian) service manual in PDF if you want it?
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CBT February 2008 | A2 June 2008 | Yamaha YBR125 (written off) | Honda CBF125 (current)

[Mark65]

Great stuff thnx.
Neil, ive seen the book on ebay for £13 free delivery, if this months wages permit i will order it.

Thnx for the links guys

Mark
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07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[Mark65]

Thnx Neil
I have an english pdf manual but its for a 2005 and the italian version has clearer images, but yes pls send it to me thnx.
I should be able to get the Haynes jobbie this paycheck.

https://cgi.ebay.co.uk/Yamaha-YBR125-and-XT125R-X-Service-and-Repair-Manual-2_W0QQitemZ270469816848QQcmdZViewItemQQptZUK_Books_NonFictionBooks_NonFictionBooks_SM?hash=item3ef941e210

Mark
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07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[Mark65]

Hi all
Update: well you were right , it was a peice of piss to take the forks off and drain, springs are 135mm so are spot on, now on the oil amount should i go off the amount 156ml or height 166mm from top, now if i go with height is that with the forks extended full or not ? and with the spring in or not?.

Now to tweak, i will use 15w fork oil, so as i want a bit mor preload and stiffer dampning should i put 10mm worth of washers in to start with and extra 10-20mm of fluid height?, Any recommendations pls.

Mark
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07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[ms51ves3]

Always go off the height as there will still be some oil left in the forks which is not accounted for in the 156ml.

Measure the gap when the forks are full compressed and without the spring.

[TUG]

You want to go off air gap mark, not measurements.
A piece of clear pipe with mm measurements on with a syringe at the top will do the job and cheap too, i have syringes at work thought i think they're dead now.
i got your email btw, Use heavier oil, and some spacers to make things stiffer, i'd take the forks off but thats just me, i find it simple that way as theres no messing around it only takes a few mins to do, the only bastard is the mudguard... i hate those mudguards.
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Haz ER-5, innit!

[Mark65]

All off and stripped down in the garage lonewolf, will have to nip in tomm for 15w oil as i cant seem to find any. halfords only have 10w. I tried the car acc shop in hindley but his valvoline bike oil was dated 2005 , oh and i need brake pads they are almost at there limit, so do i go yamaha or ebc?

Mark
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07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[TUG]

I've always fitted EBC, not had a problem with them yet, on my own bikes i like to fit Armstrong HH pads, i've fitted some HH ebc's to the SRAD thought so will have to see what they're like.
Price them up and see what you thinks best to have, personally if the EBC's are cheaper i'd use them but thats just me.
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Haz ER-5, innit!

[Acemastr]

[TUG]

[neil.]

I would also add when you put the new oil in, pump the forks quite a few times until you don't hear 'bubbling' any more (the sound changes quite noticeably), so the oil gets into the nooks and crannies BEFORE you measure.

As for brake pads, there is a lot of differing opinions on sintered vs non-sintered (organic/kevlar). I chose organic in the end to reduce wear on the disc and for a low power bike I didn't feel I needed extra braking power. Also, it is my understanding that sintered pads work better in the warm, but I'll be running the bike in winter. However that's all I know so someone else here will probably chime in with more info. My 2005 YBR (3D91) uses EBC FA101 size pads. The 2007+ (3D92) model uses a completely different pad - EBC FA464.


____________________
CBT February 2008 | A2 June 2008 | Yamaha YBR125 (written off) | Honda CBF125 (current)

[Acemastr]

[Mark65]

Ace there are two different pads for the,, the later ones are larger 2007 and on i think, the bad news is my forks are bent slightly, i havnt crashed or owt so im thinking the chap before me may have bent them or they may be faulty, when they are installed you cant see the bend as it is only 2-3mm, i only noticed when i extended them, so im waiting to see what yamaha say.
So its the car for a few days Now just in case yamaha have me grab my ankles, where can i get ybr fork tubes cheap (just the inners).

Mark
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07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[ms51ves3]

If they are only slightly bent you can have a look at getting them straightened. It may be cheaper than buying new ones.

[Mark65]

[ms51ves3]

[TUG]

[Mark65]

[ms51ves3]

[Mark65]

Now if i have to take the legs off do i need to remove the seals or can i slide the tubes out of the fork legs and then back in when fixed without removing the seals, or do i need to put new seals in? and what does the special tool look like that goes inside the legs.

Mark
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07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[Mark65]

Well phoned Wigan Yamaha up and the service chap has no idea what i was talking about, so after going through it and putting his views, which were basically if youve ridden with the forks bent for this amount of time whats the problem , But my point is they are faulty and unless you take them off you would not have seen it. Now i did say i didnt think anyone was to blame here but there must be a solution to the problem that will keep both partys happy.
I have said if the fork tubes are £60 retail i would be happy if they were supplied to me at £30 each, obviously they are not loosing £30 as they would not be paying £60 for them from Yamaha, then i would install them myself, i think this is a fair solution really, but if they palm me off with crap as i have a feeling they will then when its time to buy the big bike my money will go elswhere, so for the sake of £60 they could loose a thousand or so.

Mark
____________________
07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[ms51ves3]

Go talk to them in person and take your forks with you to show what's wrong and tell them you want to come to an agreement about the rectification of the issue.