2005 CRF450 cam chain tensioner plug/bolt
  • bhkeith
    Posts: 2
    Joined: Fri Aug 10, 2018 12:44 am

    2005 CRF450 cam chain tensioner plug/bolt

    by bhkeith » Fri Aug 10, 2018 12:56 am

    Hi all,

    First post here. Recently bought a CRF450 with a freshly rebuilt engine from a friend. Upon initial run in the stock auto cam chain tensioner plug/bolt has worked free and been ran upto half revs for 45 mins. I had done a few heat cycles before hand and never noticed the bolt missing, any oil leaking or odd noises. What damage could I have done if the cam chain was running slack? I don't think it has jumped any teeth as was running fine and oil loss was minimal and still well above the low mark after run in.

    Is it possible to buy this plug/bolt on its own without a full auto cam chain tensioner? Is it just a standard bolt of a certain length that also seals oil in? Or does it push against a mechanism inside?

    Sorry for my ignorance, thanks in advance for any replies.
  • bhkeith
    Posts: 2
    Joined: Fri Aug 10, 2018 12:44 am

    Re: 2005 CRF450 cam chain tensioner plug/bolt

    by bhkeith » Fri Aug 10, 2018 12:45 pm

    After some investigating and a trip to a local bike shop I found a parts diagram and it seems it's basically an m6x10mm long bolt with either an o-ring or copper washer. Hopefully I have not done any damage with the minutes it ran with the plug bolt out.

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