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Thread: push start button....nothing

  1. #1
    gregp Guest

    Default push start button....nothing

    1981 GS750E
    I have been restomodding it for a couple months now. The bike started and ran good before i started my clean up and mods and started up fine several times during the process. Basically the bike is stock mechanically and electrically as far as i can tell. In my process of cleaning, paint touchup etc. i had a lot of the electrical connectors unplugged to remove various items for better access. Now after putting everything back together she wont start...push the start button nada, no click, no buzz, nothing.
    Not everything is connected yet such as rear brake light and turn signals. The battery is good. When I switch the kill switch to run position i get 10.6 volts at the switch (seems low?). Push the start button i get nothing. I am not very good with the electricals but i can be talked through just about anything. I have checked that the battery negative lug has continuity with the two grounding points i know of. When i turn the ignition key the headlight comes on, the horn works. but she no start.

    I have disconnected and reconnected a lot of connectors and bullet connectors to be sure they are seated well but this at this point i am doing random things and hoping for it to magically start working. Am i forgetting something?

    What do i check next?

  2. #2
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    Check at starter solenoid.. Make sure bike is in neutral! Jump across the two big terminals and see if stsrter turns. If yes, then you got problems with solenoid trigger wire,maybe clutch safety switch,back up to kill switch,etc
    1981 gs650L

    "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

  3. #3
    kerrfunk's Avatar
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    Neutral, and clutch in?
    "I have come to believe that all life is precious." -- Eastman, TWD6.4

    1983 GS 650GL (my fourth GS) -- 23,500 miles.




  4. #4
    gregp Guest

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    Quote Originally Posted by tom203 View Post
    Check at starter solenoid.. Make sure bike is in neutral! Jump across the two big terminals and see if stsrter turns. If yes, then you got problems with solenoid trigger wire,maybe clutch safety switch,back up to kill switch,etc
    Hi Tom...Yes the neutral thing got me once a few weeks ago! so it is in neutral...but that brings up another question. The idiot lights are not connected so i don't know if the green light is on. Is it possible to be in neutral sort of? the bike rolls like in neutral but she doesn't think she's in neutral?

    Jump across two big terminals?...forgive my newbness...which two big terminals?

    clutch safety switch? i don't see this on the schematic. although i see a starter disconnect switch on the schematic which i see no sign of on the bike. There is a single bullet connector (grn/yel wire) that looks like that is where it would have been...not sure. but she did start originally so something has changed.

  5. #5
    gregp Guest

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    Quote Originally Posted by kerrfunk View Post
    Neutral, and clutch in?
    it is in neutral...at least i think so...but does the bike think so?...
    clutch in?...this is required?...i wasn't aware of that. My CX500 does not require clutch in if in neutral...anyway, clutch in does not help. But if it is required to be "clutch in" even when in neutral i should look at that switch...actually right now it is not even connected and i don't even see it on the schematic. i have an extra yellow wire and an extra brown wire coming out of the main harness. the wires from the clutch switch are both grn/yel and not shown on the schematic...the brown i see on the schematic, looks like tail/brake light and probably not used

  6. #6
    Redman's Avatar
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    I dont know specificaly on the E, but on the G, the clutch switch is shown on the factory schematic only as "Interlock". Is in the circuit between the starter button and the starter solenoid.

    TO check the battery and the starter motor and the main power connections: Jump between the two big connections on the solenoid.

    Yah, 10 volts at the kill swtich sounds low. Check at the battery, if battery is 10 volts, well , need to deal with that first.

    Had 850G for 14 years. Now have GK since 2005.
    GK at IndyMotoGP Suzuki Display... ... GK on GSResources Page ... ... Euro Trash Ego Machine .. ..3 mo'cykls.



  7. #7
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    Quote Originally Posted by gregp View Post
    clutch in?...this is required?...i wasn't aware of that. My CX500 does not require clutch in if in neutral...
    That is because Honda chose to go with a more-complex logic circuit. If the bike is in Neutral, you do not need to pull the clutch. However, if the bike is in gear, you DO need to pull the clutch. My Golddwing operates the same way.

    Suzuki chose to go with a much simpler idea. Pull the clutch every time, whether in Neutral or in gear. It is easy to bypass this "safety" feature so you don't have to pull the clutch any time. It's possible that a previous owner might have already done that for you.

    .

    mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
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    "image.jpgJump across two big terminals?...forgive my newbness...which two big terminals?"

    Look at this pic of starter solenoid... You can jump /bridge across the two big terminals with pliers or something. One big terminal gets the wire going to positive battery,the other big guy gets the wire going to starter motor. When these are connected,voila, the starter spins.
    Note also the small yellow wire with green stripe... this is the trigger wire for the solenoid which runs up to clutch safety switch. Note also the small ground wire connection.
    1981 gs650L

    "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

  9. #9
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    Quote Originally Posted by tom203 View Post
    Note also the small ground wire connection.
    Please also note that the ground wire connection does not exist on most GS solenoids.

    The ground connection is formed through the case and the screw that mounts it to the bike.

    However, most solenoids are mounted on a rubber-isolated battery box, so there is a ground wire from the mounting screw to the chassis.

    .

    mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
    hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
    #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
    #2 son: 1980 GS1000G
    Family Portrait
    Siblings and Spouses
    Mom's first ride
    Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
    (Click on my username in the upper-left corner for e-mail info.)

  10. #10
    kerrfunk's Avatar
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    One time when I was about nineteen years old I was back from college and had a dentist appointment or something. I jumped into my dad's car and it would not start, no engine turning, nothing. I had to take my mom's car.

    Dad's car was a manual transmission and I had forgotten to put the clutch in and that's why it wouldn't start.

    When I was working on my starter recently I wrapped a wire around the clutch lever so I could check the start without both hands on the bars.
    "I have come to believe that all life is precious." -- Eastman, TWD6.4

    1983 GS 650GL (my fourth GS) -- 23,500 miles.




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