Whats this called?

[DylanM345]

I cant find the bolt circled in red, and i dont know what this area is called either

[SmokinJoe]

It's the bolt that holds the power valve linkage to the end of the power valve rod.

[DylanM345]

is a bolt supposed to go in that hole? i cant find it on motorsport

[mlatour]

Dylan, your posting history suggest it's a 2002 model year YZ125, correct?

 

If so, the parts you are looking for are in the 'governor' parts fiche, items #1 thru 6 here:

https://www.partspitstop.com/oemparts/a/yam/500449c3f8700209bc7905d6/governor

Edited Thursday at 01:40 AM by mlatour

[eXc]

YZ 250 Reference 🙂

 

 

[8675309]

More importantly WHY THE EFF does one cylinder bolt require an open end wrench? 

[Four square T]

13 minutes ago, 8675309 said:

More importantly WHY THE EFF does one cylinder bolt require an open end wrench? 

That’s what I say everytime I do a top end. My son’s yz65 is the same way.

[8675309]

Sheesh, tearing down my 250x soon and dreading that nut. 

[Kinger317]

 Use the other end, the box end

29 minutes ago, 8675309 said:

More importantly WHY THE EFF does one cylinder bolt require an open end wrench? 

 

[Four square T]

5 hours ago, DylanM345 said:

I cant find the bolt circled in red, and i dont know what this area is called either

Here you go. I am going off of another post saying it’s a 2002 yz125

[Smoking 2's]

My snap on wrenches slide on that but but like some of the old craftsman you gotta grind down or motion pro or tusk sale a special wrench and socket

[FLO_Rida]

Motion pro tool rules.  I used it from my cr125 to cr250 to yz250....  Best tool I bought. 

[8675309]

6 hours ago, Smoking 2's said:

My snap on wrenches slide on that but but like some of the old craftsman you gotta grind down or motion pro or tusk sale a special wrench and socket

Ready for a tear down, can you link me to that Motion Pro Item please, will be using RockyMountain for parts. 

Thanks guys. 

[brysonrs]

16 minutes ago, 8675309 said:

Ready for a tear down, can you link me to that Motion Pro Item please, will be using RockyMountain for parts. 

Thanks guys. 

https://www.rockymountainatvmc.com/parts/motion-pro-torque-wrench-adaptor-p

Just keep in mind that you will have to use the formula to correctly calculate torque using that tool. 

 

Edited Thursday at 04:42 PM by brysonrs

[Sullysully]

12 hours ago, Kinger317 said:

 Use the other end, the box end

 

Or use the torque wrench adapter you need to torque that bolt properly 

 

edit: I see several of you brought that up now

Edited Thursday at 05:30 PM by Sullysully

[8675309]

53 minutes ago, brysonrs said:

https://www.rockymountainatvmc.com/parts/motion-pro-torque-wrench-adaptor-p

Just keep in mind that you will have to use the formula to correctly calculate torque using that tool. 

 

Bry, 

Does that tool also fit the hidden nut? 

[brysonrs]

3 minutes ago, 8675309 said:

Bry, 

Does that tool also fit the hidden nut? 

It's designed to be smaller and it should fit. I'm not 100% sure on that though. Worked on my 250. 

[8675309]

Mines a 17 x so should work there as well. Thank you. 

Not the end of the world, have rebuilt many 2006 and newer yz's just winging it. But will try the M pro this time. 

[8675309]

Thanks guys, ordered the MP tool, not sure why I though box end didn't fit. Don't get old okay? 

[ChrisN572]

On Motorsport, oem 2002 yz125, look at governor page/ link. Looks like part number 6 is the bolt you’re missing.

www.Motorsport.com/oem-parts/Yamaha/2002/yz125/governor