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Starter Rattle

This is a discussion on Starter Rattle within the Technical forums, part of the Caferacer.net Forums category; Hey Guys, I've noticed on occation when I press the starter and turn a little bit of throttle my bike makes a rattling sound somewhere ...

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Thread: Starter Rattle

  1. #1
    Senior Member Danny Yourd's Avatar
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    Starter Rattle

    Hey Guys,

    I've noticed on occation when I press the starter and turn a little bit of throttle my bike makes a rattling sound somewhere beneath the gas tank. Thats really the best way i can describe it. It does not happen after i get the bike started, only when applying throttle when starting the bike. Any thoughts on what to check for?

    Thanks!
    1973 CB450

  2. #2
    Senior Member crazypj's Avatar
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    MICE?
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  3. #3
    Senior Member Danny Yourd's Avatar
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    haha i wouldnt rule that out after what i found
    1973 CB450

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    Senior Member oneworden's Avatar
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    what king of bike?

    if it is a virago they all do that.
    Did you hear about the pirate with two wooden legs?

    They caught fire and burned his ass to the ground!

  6. #5
    Senior Member kenessex's Avatar
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    I suspect the starter one way clutch is slipping. It is behind the alternator rotor on the left end of the crank. Those early Honda clutches can crack the housing, collapse the roller springs, get loose screws or flatten rollers, not to mention a loose starter chain.

    Ken
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  7. #6
    Senior Member Danny Yourd's Avatar
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    quote:Originally posted by kenessex

    I suspect the starter one way clutch is slipping. It is behind the alternator rotor on the left end of the crank. Those early Honda clutches can crack the housing, collapse the roller springs, get loose screws or flatten rollers, not to mention a loose starter chain.

    Ken
    is that something that is fixable or will it need replaced - if that is the case?
    1973 CB450

  8. #7
    Senior Member kenessex's Avatar
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    That depends on what is wrong and how you define fix. It could be as easy as the three oval head 6mm screws holding the starter clutch to the rotor are loose. The fix is clean, loctite and reinstall. It could be the main starter clutch piece is cracked, in which case it needs to be replaced, probably along with the springs, rollers and caps. But who knows if that is even the problem, it was just an internet guess based on likely probabilities from a poor description of the symptoms. If it was mine, I'd pull the left engine cover and rotor off and take a look. It should only take about 5 minutes. You do have an alternator rotor puller, don't you?


    Ken
    WERA 119
    CCS 119
    CRA 119
    AHRMA not anymore
    \"Think twice before you speak, and then you may be able to say something more insulting than if you spoke right out at once.\"
    Evan Esar
    Newbies, Geeto and Tex (Bye Tex)hate me!!

  9. #8
    Senior Member Danny Yourd's Avatar
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    Just recorded a video of the noise my bike has been making on a cold start in the morning. Today was actually the worst its been yet. Link below of video.



    Thoughts?
    1973 CB450

  10. #9
    Senior Member Danny Yourd's Avatar
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    Just recorded a video of the noise my bike has been making on a cold start in the morning. Today was actually the worst its been yet. Link below of video.



    Thoughts?
    1973 CB450

  11. #10
    Senior Member CurbTiger's Avatar
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    Yep, the roller clutch thingy isn't catching.
    Listen to Ken. You may need another starter clutch gear, along with the rollers, plungers and springs. The snout on the gear becomes slightly notched, not allowing the rollers to grab.
    It's the red business on #2 that gets effed up...


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