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so what's that other bolt by the oil drain plug?

33383 Views 6 Replies 7 Participants Last post by  Russell Campbell
The one with the copper crush washer. An the sping an pin. Ill assume its something to do with the gear shifter?

I thought that was the drain plug at first. An I put everything back in an prayed. But she still works fine. Idk if it was because I changed the oil at the same time. But feels like my gears shift smoother too.
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Nope, that is the cam chain tensioner. I dropped it too. Then the mechanics laughed and said the oil drain would be a 17mm not a 14mm. It goes in this order: plug, spring with tapered end butting up to silver end of rod meaning the black end goes in first.
As long as you don't bump the motor over or try and move it in gear, you won't have any problems with the cam chain or timing as long as you put the cam chain tensioner assembly back together properly. I think there's a service manual PDF on here if you search little bit.
I've got a home made service manual, made from the official bits, but written for the newbie. For some reason I can't attach files, but pm me you email, and I'll send it over. feel free to pass it round too.
Did the same thing on my 125 HOnda clone motor... just out of curiosity. My first thought "SHIT! What fell out?" I freaked a little bit and tore down one of my old Honda 50 motors to see what it was. :/
Nope, that is the cam chain tensioner. I dropped it too. Then the mechanics laughed and said the oil drain would be a 17mm not a 14mm. It goes in this order: plug, spring with tapered end butting up to silver end of rod meaning the black end goes in first.
I too did the same thing. I hope I put it in right. A pic would be great.
Does anyone have the Torque spec for the bolt? I know what the oil drain plug torque of 18 lb-ft but this cam tensioner bolt should be a lot less. TIA from AZ. The diagrams from the service manual should show the torque values of all the screws and bolts on the machine. Grazie!

Further searching I found the torque specs in the service manual which is available on the forum for a Honda CT125 under the Tech Discussion main topic as a chapter.
Honda Trail 125 Forum
For this Cam Tensioner Bolt the torque spec is 16 FT-LB
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