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GSX-R 750 Pictures of how I adjusted the valves on my 1985 1986 1987 Suzuki GSX-R750 motorcycle.


But first, lets pay some bills:
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  1. She ran a bit rough when I got her, so I assume she needs a valve job. I took off the tank and plastics. Damn, I love this bike.
    I love Veronica


  2. To adjust the valves, I need to take off the valve cover. The valve cover bolts have little plastic plugs in them. I popped those out.
    plugs


  3. I need to remove all these to remove the valve cover: Four bolts in the field, eight allen bolts on the perimeter, one more allen in the front and one more in the back, and two small allen bolts holding on each oil line.
    bolts


  4. The small allen in front is hard to see, but I could feel it and I took it off.
    sneaky allen


  5. When my wife got this little electric screwdriver for me for my birthday, I looked at it condescendingly and forced a smile. As I said thank you, I wondered where I would keep this toy power tool so it would not get too dusty from disuse. I use the damn thing more than any other tool I have. I love it. If you do not have one, go get one. Thank you, dear. Anyway, four bolts in the middle...
    four bolts


  6. and each bolt has a washer.
    washers


  7. The oil lines have o-rings. I did not lose them, they are still good, I reused them, and no leaks after reinstall.
    o-rings


  8. There is the valve train with the valve cover off. All those valves. I am so glad they are not shim type valves.
    many valves     valves


  9. I need to take off the signal generator / stator cover, to turn the crankshaft, to rotate the engine, to rotate the camshafts into the correct positions, to check the valve clearances. More allen bolts.
    timing cover


  10. There's the signal generator, and I think that's the oil pressure switch under it. The allen in the middle of the crank holds on the signal generator rotor. The outer bolt on the rotor is keyed into the crankshaft.
    signal parts


  11. I rotated the engine with a wrench on the larger rotor, not on the smaller allen in the middle, as that could damage the threads that hold on the rotor. I rotated it to bring the mark to the left pickup coil.

    Hey, I have a Vance and Hines Racing ignition advancer. VHR. Who knew?
    pickup coil


  12. From the Factory Service Manual (FSM), check the valves marked C when the marks on the camshafts point out, and the valves marked D when the marks on the camshafts point in.
    FSM


  13. There is a shot with the cam in position "C."
    D


  14. There is a shot with the cams in position "D."
    C


  15. Every time I rotated the engine, some oil poured out of the oil channel next to the oil pressure switch.
    oil


  16. I measured the valve clearances, and every one was tight. Surprise.
    measure valve clearance


  17. I want all the valve clearances on the loose end, as close to 0.15 mm as I can get them, without going over.
    tight


  18. I made this little tool to adjust the valves. A square drive screw, and a wingnut to hold onto it. Later I added a nut to lock the wingnut, a big washer to push on, and a rubber washer because that was the biggest washer I had.
    valve adjustment tool


  19. The square drive screw head slot holds onto the center of the valve clearance adjuster and keeps it from rotating while I tighten the locking nut. I adjusted all the valves so that I could just BARELY, SNUGLY, insert the 0.15mm feeler.
    valve adjustment tool


  20. After all the valves were adjusted, I retorqued all the head bolts.
    retorque


  21. And this tiny head bolt in the front. See the little box end wrench.
    tiny head bolt


  22. And one of the valve bolts was leaking, so I put a bit of my favorite and often used Permatex, their excellent Ultimate Grey Moto Seal. No more leaks. Hey Permatex, please send me some free Moto Seal. Also a t-shirt, XL.
    product placement


  23. Next I sold out to make 02ยข so I can fulfill my lifelong dream of owning a 1986 944 with blown head gaskets.
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    But no minivans!


  24. Then I finished my beer.
    Beer


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Last modified: 11/25/2014
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