balikian Posted August 28, 2016 Share Posted August 28, 2016 Hey all. I joined as I'm starting a little project to get my Sister-in-law's 1973 AT3 running as a birthday gift to her. I apologize if what I'm about to ask has been covered in the forums, but I honestly don't even know how to go about searching for an answer... On her bike, there's a small lever just below the clutch lever that connects by cable to something on the engine head. Pulling the lever lifts this connection, but I have NO IDEA what it does. I got a manual and haven't been able to find anything in the manual about it. There seems to be a bit of old oil around this area, though the bike hasn't been started or ridden in a few years. Just wondering if someone could explain what this is. If pictures are suggested, I can take a couple today and post them. Thanks a bunch! Link to comment Share on other sites More sharing options...
JimR Posted August 29, 2016 Share Posted August 29, 2016 In the UK this was just a blank bolt see http://www.ebay.com/itm/Yamaha-AT3-125-2459-Cylinder-Head-/360519255448 but I have seen setups like this before (non yamaha) that just 'let the compression out' which in turn just stopped the engine (early kill switch) ... I have known other people intall a spare spark plug in place of it as it has the same thread as a spark pug http://www.ebay.co.uk/itm/151865172178?clk_rvr_id=1084552117386&rmvSB=true Link to comment Share on other sites More sharing options...
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