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Samuel Theriault

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About Samuel Theriault

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    Quebec

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  1. Samuel Theriault

    Govenor gear not lining up??

    I heard of people having this issue on a brand new 2015 yz250 that had never been apart with 40hrs max on it and also on a 09 yz250 that only had 10hrs in. Mine is a 04 yz125 so the issue might not be there after the final major change in the engine compartment done in 06 if I am correct for 125, not sure when or if something similar is the case for 250s but we know it happended on a 09 and 15 so anything with the same engine is at risk I would assume. My guess is that this issue is still present to this day for both 125 and 250 but I wouldn't really call myself a good reference. I had to get a new oem clutch inner casing for 250$, a clutch cover for 350$ and all that + shipping. It blows me away that the cover costs more than the casing but I guess that's the way it is for bikes that have the clutch acuator assembly inside of the cover. Luckily I did not need to change the engine cases and I do not think this particular failure could cause the need of changing them. Again, sorry I am off topic.
  2. Samuel Theriault

    Govenor gear not lining up??

    I deserve that, stupid me went off topic again. Alright don't mind me I am an idiot.
  3. Samuel Theriault

    Govenor gear not lining up??

    Sorry I don't think you understand what happened to me. The bolt backed out and tore the casing apart and warped the cover round. The bike acted as it was seized because the bolt was pushing hard on the casing preventing the crank to spin. Here are pics of the mess, one of them is with the casing off to see just how much it backed out. This is an issue that happens quite a bit, sometimes with brand new bikes. Mine is a 04 yz125. Hope I make sense.
  4. Samuel Theriault

    Govenor gear not lining up??

    Yes I saw that, thanks for pointing it out! I just wanted op to know this bolt can cause issues if to backs out. Would not want anyone else have to experience this whole 700$ pit just because a couple cents weren't put into loctite.
  5. Samuel Theriault

    Govenor gear not lining up??

    That gear you are not sure of the name is called the primary drive gear. If you are still in there, make sure the bolt on there is locked in with threadlocker and well torqued to spec because I had to pay for a whole clutch inner casing AND overpriced clutch cover + a whole month of not riding waiting for parts JUST because previous owner had rebuild bottom end and had not threadlocked it. Seriously though, it only takes a couple minutes and I will always check on that bolt from this bike on. If you're having trouble torquing it, consider jamming a rag in between the gears so it won't spin. I Wish you and your friend happy riding!
  6. Samuel Theriault

    Shock bearing replacement help

    You might just be right because placed how they are now, which btw is the manual's way, would mean that the flat washer side would be rubbing on the outer and inner race of the bearing as well as the linkage which is plain dumb. But then If I put it your way, which was how it was when I took it apart, the plain washer side would be pressed on the linkage and the inner race of the bearing. All good right? but then why on earth is it not like that on the manual. Well I guess I am taking it apart again, let's hope these seals work twice...
  7. Samuel Theriault

    Shock bearing replacement help

    hmm... I guess that's what I get for paying half the overpriced oem parts my dealer sells. Anybody has an Idea how to fit this thing though?
  8. Samuel Theriault

    Shock bearing replacement help

    I was replacing my shock bearings just then and realized the manual shows a different way of installation than what it was when I took it apart. Of course I did as the manual asks but just wanted to make sure if this is the right way to do it. I will attach a picture of how I did it which is the collars pointing outwards. When I took it apart the collars pointed inwards and was just very lightly jammed in the seal, one even fell of when removing the shock from the bike. Another question... I seem to be struggling to press the upper bearing in its hole. I tried the freezer and heat gun trick but still did not work. I even have grease applied where the bearing goes to help it slide in but the main problem is that it won't fit right. It keeps slightly tilting to one side and messing everything up. And I know I am installing it on the circlip side. I am using the All Balls shock bearing kit for the upper and lower bearings, lower fit just right with the help of freezer, heat gun and grease. Also, the collars on the upper bearing kit does not include an o-ring like the oem one has. I assume this isn't an issue? Bike is a 2004 yz125 Thanks in advance!
  9. Samuel Theriault

    Pierced casing mystery

    Did you ever have a problem taking the primary bolt out when red locked. Heard they are a pain even with a torch. Thanks for responding that fast, too fast for me almost!
  10. Samuel Theriault

    Pierced casing mystery

    Sorry to revive a dead thread but now that I know lock-tite is needed for this bolt, I am wondering if it is also needed on other bolts such as the clutch spring bolts. Really don't want to wreck another casing
  11. Samuel Theriault

    Pierced casing mystery

    I am guessing this just slowly unscrews because of the vibrations and torque differences while riding? I ran this bike for a while like that. Is there a chance the sprocket could have came loose?
  12. Samuel Theriault

    Pierced casing mystery

    Did not think it would be a regular issue, I did not do the last rebuild, it was the first time I split the cases since I got it. Thanks alot. By the way is it a good idea to use compressed air to clear metal flakes in the cases or will it wreck seals and scratch from the inside when flakes slide off. Also, I assume I should open the tranny to clean it of possible debris coming from the oil routings too right?
  13. Samuel Theriault

    Pierced casing mystery

    Was riding last weekend and everything was perfect until right after shifting into third on my 2004 yz125, it would feel like the clutch was not engaging and the engine revved as I tried moving until I stopped the bike which then made it stall and seize. I looked at the bike and oil was dripping from the clutch cover gasket and I later realized a hole in the clutch inner casing. After many cusses and an annoyed trip back home I open the clutch cover. I first thought the clutch grenaded and bits went flying and made enough a mess to impede the crank from turning. Though this seemed wierd because the clutch is fairly new and the oil was only 2 hours old but this happend right after practicing pivot turns which requires some clutch work. After pulling that out and seeing it is near factory condition, I tried turning the engine, still seized. So I thought the crank had blown, but on its final grasp, the bike was revving smoothly. So I go Ahead and remove the clutch inner casing (the part that has the hole in). It required quit a bit of force and when it finally broke free, a piece that had broken off the casing flew out fast. It was pressed against something from the inside quite hard. That something turned out to be a bolt on the crankshaft holding the sproket driving the primary driven gear. The bolt is far from fully in its socket as seen in the attached picture. This bolt is exactly where the hole/piece that flew off was and both that bolt and that piece of casing are worn as if they were pressed and rotated against eachother. And this piece of casing seems to have melted and fused on itself in a strange way (see picture) (last one is only the clutch cover removed) At first I thought this bolt is like that to fit the powervalve assembly in between it and the crankshaft sprocket. But the manual shows the bolt fully in. If it is supposed to be like that then I have no idea how the sproket did not slip off the splines and how the bolt came out with enough force to be pressed on the casing from the inside and seize my engine. Is it from locking the rear wheel suddenly, dumping the clutch (both depend on the direction of the engine's rotation), I have no Idea and I would love to know why and how to prevent it from happening. To sums things up, is this bolt supposed to be like that? If not, why is it not in its place? I apologize for writing the bible for you but I want details to be there. If you want to know anything else just ask away. Thank you very much in advance!
  14. Samuel Theriault

    What is this bolt?

    Do you think I need a new actuator shaft or a new cover?
  15. Samuel Theriault

    What is this bolt?

    Bolt seems to be leaking stuff out, transmission oil??? When trying to tighten it, it just spins without much force needed and doesn't screw in. I can't find it in the manual, been bugging me for a while now. What is it and what does it do, Thanks!
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