valve adjustment
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  1. #1
    Seat Tester
    My Bike(s)
    06 M50
    Posts
    86

    valve adjustment

    Decided to check the valves today. Bike just rolled over 8000 miles. Every thing within specs. Was wondering if these bikes need valve adjustments very often? I guess I will check them again at 15000 miles. Will order the gauges from Suzuki next time. Luckily I had got me some Hemostats to hold the feeler gauges.
    David

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  3. #2
    Can Ride And Chew Gum
    My Bike(s)
    '08 Suzuki M50,1975 Goldwing,1982 Silverwing
    Location
    Hensley, Arkansas
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    2,012
    Manual shows to inspect at 600,7500,and 14500 miles so around 15000 is pretty close.
    If you can't dazzle 'em with brilliance,Baffle 'em with Bulls!!t!

    Roadburner Street Pro's on my M http://www.youtube.com/watch?v=Hf0IYPcoiVc

  4. #3
    Seat Tester
    My Bike(s)
    06 M50
    Posts
    86
    Anyone use this method




    jpaige wrote:
    Throw away the feeler gages, back off 1/8 turn for intakes, 1/4 turn for exhausts.


    If you do the math, you convert the pitch of the screw into degrees of rotation.


    .75mm pitch = .02952756" per revolution = .000082" per degree
    intake .003" to .005" = 36-60 degrees (call it 45)
    exhaust .007" to .009" = 85-109 degrees (call it 90)


    Sooo, to achieve the clearance for the intake valve, loosen the lock nut, screw the tappet down until it touches the top of the valve, and then back it off 45 degrees (1/8 turn) Same thing for the exhaust, back off 90 degrees (1/4 turn).

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  6. #4
    Can Ride And Chew Gum
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    '08 Suzuki M50,1975 Goldwing,1982 Silverwing
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    Have not.Sounds interesting though.Do you think it works?
    If you can't dazzle 'em with brilliance,Baffle 'em with Bulls!!t!

    Roadburner Street Pro's on my M http://www.youtube.com/watch?v=Hf0IYPcoiVc

  7. #5
    Seat Tester
    My Bike(s)
    06 M50
    Posts
    86
    Quote Originally Posted by AloRaptor View Post
    Have not.Sounds interesting though.Do you think it works?
    They have used this method for several years. Next adjustment going to try this. Then check it with feeler gauges to see if it works. Going to make me a tool out of the wire nut and square headed screw.
    David
    Last edited by warlock; 05-31-2015 at 03:11 PM.

  8. #6
    Super Moderator

    My Bike(s)
    Vulcan 900, Can-AM Spyder
    Location
    Ocala, FL
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    11,081
    I used to set the tappets on my 283 Chevy by feel.
    Don't believe everything that you think.

  9. #7
    Seat Tester
    My Bike(s)
    06 M50
    Posts
    86
    Seen that done several times

  10. #8
    Newbie
    My Bike(s)
    Suzuki GSX 250
    Posts
    5
    Anyone know of a utube video of adjustment of the valves on a 1980 Suzuki GSX 250 as I don't have a manual for the bike and not had it long

    Any help or if anyone has it electronically that can send it to me I would be grateful

    Cheers

  11. #9
    Super Moderator

    My Bike(s)
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    Quote Originally Posted by Dubloman View Post
    Anyone know of a utube video of adjustment of the valves
    PLEASE do not post the same question in multiple threads. That just makes things confusing.
    You get a pass on this one but future duplicates will be removed.
    Don't believe everything that you think.

  12. #10
    Newbie
    My Bike(s)
    M50
    Posts
    18
    Logically, it should work? However, I didn't have the special tool to hold the tappet, so whenever I cranked the lock nut, I lost clearance. I then added a little more clearance, assuming I'd loose a thousandth or so after tightening. Had to do it 2-3 times per valve until I finally got it right.

    Quote Originally Posted by warlock View Post
    Anyone use this method




    jpaige wrote:
    Throw away the feeler gages, back off 1/8 turn for intakes, 1/4 turn for exhausts.


    If you do the math, you convert the pitch of the screw into degrees of rotation.


    .75mm pitch = .02952756" per revolution = .000082" per degree
    intake .003" to .005" = 36-60 degrees (call it 45)
    exhaust .007" to .009" = 85-109 degrees (call it 90)


    Sooo, to achieve the clearance for the intake valve, loosen the lock nut, screw the tappet down until it touches the top of the valve, and then back it off 45 degrees (1/8 turn) Same thing for the exhaust, back off 90 degrees (1/4 turn).

  13. #11
    M-J Lifetime Achievement Award
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    Perth WA
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    A lot of tappets have a square head which just so happens to be the same as some decking screw head patterns. Many here use one of the screws driven into a small wooden handle, a small file handle is perfect, and then use that to prevent the tappet turning when nipping up the lock nut.
    Smoke me a kipper I'll be home in time for breakfast

  14. #12
    Newbie
    My Bike(s)
    M50
    Posts
    18
    Great tip. That sure beats using a needle nose pliers with minimal success. Thanks!

    Quote Originally Posted by Aussie Steve View Post
    A lot of tappets have a square head which just so happens to be the same as some decking screw head patterns. Many here use one of the screws driven into a small wooden handle, a small file handle is perfect, and then use that to prevent the tappet turning when nipping up the lock nut.


 

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