Couple things to note here:
You need to make a custom tool like I did in the video or have an impact wrench available. You'll need a black permanent marker, a 12mm socket for the rotor bolt, a torque wrench, an allen bit for the engine cover bolts, and you'll have to remove your fairing (all of which is EASY). Also have a couple clean rags available just in case some oil spills, and have a tube of thread lock available for the bolt reinstall. You'll also need some metal files for shaving metal. Comment below if you have any questions.
First, do NOT allow the rotor to rotate counterclockwise. Some guys use an impact wrench for removing the rotor, but I don't have one so instead I made my own tool to hold the rotor in place while I unbolted the bolt that held the rotor on. My tool is basically a homemade version of the actual Yamaha tool for removing the rotor. If the rotor is allowed to rotate counterclockwise, you could end up skipping a tooth and throwing off the engine timing. That would be catastrophic to your engine. That said, it is perfectly fine if the rotor rotates clockwise as that is completely normal during engine operation anyway.
Second, make sure both metal pin-dowels are in place before you begin unbolting the rotor. It's common that the one on the right hand side will come out when the cover is pulled. Simply put it back if it does.
Third, make yourself some reference lines like I did on the chain links. This will confirm that you did not allow the rotor to rotate counterclockwise during removal of the rotor. Again, it is totally OK if the rotor rotates clockwise.
Fourth, buy a new gasket/seal for the engine cover for when you reinstall it. The stock one is probably going to tear on you after removing the cover so have a new one handy and ready to go. Just remember to remove the old gasket/seal completely off both mating surfaces of the cover and engine before installing the new gasket/seal (part number is below).
When you shave the key block on the backside of the trigger, make sure the left side of the block is shaved. So holding the trigger with the block at the top of the trigger and facing you, shave the left side .020". That will give you 2 degrees of advanced timing, and is a safe advance. You can go .030 but I am not as confident in that 3 degrees as I am with 2 degrees, but it's your call. If you stick with .020, or 2 degrees, you won't have a thing to worry about. If you go with 3 degrees or .030, there are some safety perimeters you should make yourself aware of. Just check the forums for more information.
So, to sum up: if in doubt, skip 3 degrees and stick with .020. How do you do this? Simple. Just get a good pair of digital calipers and measure the stock untouched key block. You'll find it measures 0.1978. If you want to advance 2 degrees, then shave the left side of the block .020" to end up with 0.1778.
Fifth, once done, put the rotor back in place and then tighten the bolt to 24 ft/Ib torque. It's probably a good idea to add a tad bit of thread lock. If the timing chain rotates clockwise at this point during reinstallation of the shaved rotor, then that's perfectly fine. You just don't want it to rotate counterclockwise.
** In the video, I mentioned movement on the rotor. I was saying that to literally show you that their room now for the rotor to move. HOWEVER, once you bolt the rotor down, it will no longer move so make sure you rotate the rotor clockwise and then tighten it down.
Last, once you're done installing the modified rotor, install your new gasket/seal and then put your engine cover back on. Make sure the pin-dowels line up, otherwise the cover won't go on. It should be a nice and smooth placement.
Tighten your engine cover bolts to spec (about 7 ft/Ib. torque I believe) and start your engine. Check for oil leaks and that's it. Done.
As with any modification, I have to add the common disclaimer of 'do this mod at your own risk'. I am not responsible for your bike. That being said, this is a proven mod that will make more power for the FZ6R and it's really, really easy to do. Check out the forums for more information from members, Marthy and Sti491.
Gasket/seal Yamaha part number is: 20S-81673-0-0-00
Special thanks to Marthy and Sti491 (members of the FZ6R forum for their inspiration and groundwork for this mod).
18 май 2018
