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Ez zl600 valve clearance check method?

torontobikeguy Nov 11, 2019

  1. torontobikeguy

    torontobikeguy New Member

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    Reading that while I'm sorting out my carbs I may want to check valves for adjustment. I have the supplement manual but some videos suggest it's wrong. Am I correct that if I set the crank at tdc i will know if it's #1 or #4 just looking at the cam for the lobe center actuation on 12 exhaust or 34 exhaust?
     
  2. 87kawzl

    87kawzl Supporting Member

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    You should follow the manual.

    I usually make a diagram of the valves to keep track of which ones are done.

    The lobes of the cam need to be pointed 180° away from the tappet when gauging them.

    I always double check my measurements after all are gone through once.
     
  3. Trojan441

    Trojan441 Well-Known Member

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    Start with the engine cold! Cylinder 1 is on the Left sitting on the Bike, gear change side. Remove Cylinder 1 & 4 spark plugs. Spin the rotor by turning the crankshaft nut! Ignore the single on it's own T Mark, TDC is the T amongst the other letters align with the Line mark on the casing The IN & EX marks on the camshaft will point towards one another when cylinder 1 is at TDC. I usually use a pencil down the spark plug hole to check TDC is physically matching where it should be! In this position all valves in cylinder 1 can be adjusted, the Exhaust valves for cylinder 2 & the Inlet valves for cylinder 3. Rotate the crankshaft one full turn, align the TDC mark, the IN & EX on the Camshaft will be facing away from each other, with piston 4 @ TDC you can adjust cylinder 2 Inlets, cylinder 3 Exhausts, all of cylinder 4s valves.
    See attached. When you are finally ready to adjust and everything is static, place a rag in the camshaft tunnel to avoid anything falling down there, as happened to me this Summer! A Ba spanner 10 Ba fits the stem. Screenshot at 2019-11-13 22:01:23.png
     

    Attached Files:

    Last edited: Nov 13, 2019
  4. Trojan441

    Trojan441 Well-Known Member

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    The IN EX marks on the Cam and their orientation tell you which cylinder 1 or 4 is @ TDC!
     
  5. Trojan441

    Trojan441 Well-Known Member

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    20190827_150432.jpg
     

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