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Thread: Oil Change, Valve Clearance Adjustment, and - Coolant change?

  1. #1
    Member Daniszeman's Avatar
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    Oil Change, Valve Clearance Adjustment, and - Coolant change?

    Hey guys, just did the first 8,000 mile service to the bike by myself. Was pretty nice, did the oil change first - never was able to do a full oil change before (had to use the screwdriver trick) but it seemed to go very well. I could not figure out how to ever use the strap wrenches, they seemed to have no grip at all. Did a couple of test drives, no problem. Then did the valve clearance adjustment by moving the radiator out of the way (not removing it), scraped my knuckles a bit, five out of the eight valves were in spec (7 out of the 8 technically were) so I readjusted them and learned that a quarter turn of those little screws is quite a bit of of a difference. Put everything back together except the lower fairing, so I can watch for leaks or anything weird.

    Then, because I lost some radiation fluid/coolant during the valve check, I filled up the reserve to the max line (previously at minimum line) and believed that the vacuum pressure of how the radiator and everything works it would suck some back into the system - but after a few test drives, the coolant level has not changed in the reserve tank. The high temp light has not turned on during riding. I also wanted to flush the coolant but I cannot find any drain plug for it.

    So my questions are: Where is that little drain plug for the coolant? Instead of the drain plug, it just the bottom radiator hose on the port side of the bike? Why hasn't the coolant level changed even though quite a bit got drained when moving the radiator out of the way? The manual states to not remove the radiator cap (black with a tapper screw in it) and instead fill up from the reserve tank - should I attempt to remove the radiator cap and refill/check instead from the reserve?

    Thanks guys

  2. #2
    Senior Member Oil Change, Valve Clearance Adjustment, and - Coolant change? Fuzzy's Avatar
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    Quote Originally Posted by Daniszeman View Post

    Then, because I lost some radiation fluid..............
    Do you have an engine mod you haven't told us about?
    Apply dog logic to life:
    "Eat Well, Be Loved, Get Petted, Sleep A Lot, and Dream Of A Leash Free World."

    ATG ATT

  3. #3
    Senior Member netizen's Avatar
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    Quote Originally Posted by Daniszeman View Post

    Then, because I lost some radiation fluid..............

    Quote Originally Posted by Fuzzy View Post
    Do you have an engine mod you haven't told us about?
    He must have the nuclear powered NC700x

    I think maybe it's a 2015 version that is still under wraps Oil Change, Valve Clearance Adjustment, and - Coolant change?-smileymelt-jpg
    on NC700x, also have a VFR 750

  4. #4
    #1 Elite Oil Change, Valve Clearance Adjustment, and - Coolant change?
    Oil Change, Valve Clearance Adjustment, and - Coolant change?
    Beemerphile's Avatar
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    Quote Originally Posted by Daniszeman View Post
    I could not figure out how to ever use the strap wrenches, they seemed to have no grip at all.
    Try folding a small sheet of 80 - 100 grit sandpaper and placing it between the strap wrench and the filter.

    The manual states to not remove the radiator cap (black with a tapper screw in it) and instead fill up from the reserve tank - should I attempt to remove the radiator cap and refill/check instead from the reserve?
    That is the "normal" process if the system has not been opened. If the system has been opened, you need to remove the radiator cap and fill the radiator (cold) to the brim, replace the cap, and fill the expansion tank to the full mark.

  5. #5
    Senior Member Oil Change, Valve Clearance Adjustment, and - Coolant change? StratTuner's Avatar
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    Quote Originally Posted by Beemerphile View Post
    ...you need to remove the radiator cap and fill the radiator (cold) to the brim, replace the cap, and fill the expansion tank to the full mark.
    Is it safe to remove the radiator cap and just look in to see if it's full? Top it off as you described with coolant?
    - StratTuner
    NC700XFJR1300

    "If you don't understand him, and he don't die young,
    he'll probly just ride away."
    - Willie Nelson

  6. #6
    #1 Elite Oil Change, Valve Clearance Adjustment, and - Coolant change?
    Oil Change, Valve Clearance Adjustment, and - Coolant change?
    Beemerphile's Avatar
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    Quote Originally Posted by StratTuner View Post
    Is it safe to remove the radiator cap and just look in to see if it's full? Top it off as you described with coolant?
    Yes, so long as the bike is at room temperature.

  7. #7
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    How often do we need to check the valve clearance. I am new to bikes and have never done it before? Is it difficult?

  8. #8
    Senior Member n30r3l0ad3d's Avatar
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    Quote Originally Posted by wukie View Post
    How often do we need to check the valve clearance. I am new to bikes and have never done it before? Is it difficult?
    Check them at 8k miles initially. Once I hit the 8k mark *probably won't be till next season* I will do up a how to video. And from what I've seen, it's not terribly difficult. If you are not comfortable with taking the top end of the motor apart I would not recommend doing it. You will need a feeler gauge and know how to set TDC with a timing mark to adjust the valves.
    2014 Honda CB1100
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    Youtube Channel: https://www.youtube.com/user/n30r3l0ad3d/

  9. #9
    Member Daniszeman's Avatar
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    Thanks guys, removed the tapper screw and filled up with some fluid. Bike is running very smooth.

  10. #10
    Senior Member Oil Change, Valve Clearance Adjustment, and - Coolant change? FlaNC700X's Avatar
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    Good thing you didn't have any more radiation fuild leak the Department of Nuclear Energy was thinking of visiting you. Then again you could be on something. The first nuclear powered motorcycle, never needs gas and leaves all riders sterile!
    John B.




    Previous Bikes- XS 400 Yamaha (77), Honda Hawk (78), Honda CB500 , Honda CB600 Custom, Honda GL500, Nighthawk S, FZR 750 Yamaha, CB600F4i, VFR 800, NC700x. National Spearfishing Competitor.

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