Tom_H123 Posted March 26, 2019 Report Share Posted March 26, 2019 My woodruff key sheared a couple weeks back and I put a fresh one in a couple days ago, Tried to start it and it wasn’t having any of it, checked fuel supply and spark and they were both fine... cleaned the carb just in case. It very occasionally backfires when kicking it over. I can’t think what it is. I’m not sure what I’m looking for when it comes to the stator (good or bad) but I presume it’s okay as I have nice strong blue spark. I’ve got some pics so you can tell me if there’s anything wrong, cheers Quote Link to comment Share on other sites More sharing options...
Bilko Posted March 26, 2019 Report Share Posted March 26, 2019 (edited) Did you mark it before removal,if you removed it cos that looks like it's on fully retarded,which will fire after .Try central position then move either way if it runs. Edited March 26, 2019 by Bilko 1 Quote Link to comment Share on other sites More sharing options...
Tom_H123 Posted March 26, 2019 Author Report Share Posted March 26, 2019 (edited) 1 hour ago, Bilko said: Did you mark it before removal,if you removed it cos that looks like it's on fully retarded,which will fire after .Try central position then move either way if it runs. I haven’t moved the stator plate from where it was previously but I will try this anyway, I’m losing hope fairly quickly, everything else that the engine needs to run is there but it’s just not firing up, been tinkering for a couple of days trying to resolve the issue ? Edited March 26, 2019 by Tom_H123 Quote Link to comment Share on other sites More sharing options...
zippy Posted March 27, 2019 Report Share Posted March 27, 2019 Is there a 'timing" hole in the flywheel? 2nd picture looks like there is a hole in the upper portion of the stator plate that a rod could fit into if there was a corresponding hole in the flywheel, in order to time the ignition. I may be wrong. Quote Link to comment Share on other sites More sharing options...
collyolly Posted March 27, 2019 Report Share Posted March 27, 2019 Did the key locate in the slot of the flywheel properly it does not seem to protrude very much and there appears to be a bit of damage to your crankshaft end as if something did not fit. Also I would agree the timing looks to be fully in one direction, not what I would expect to see as a factory setting it's as if someone has tried to soften the engine with the timing. Quote Link to comment Share on other sites More sharing options...
wuckfitracing Posted March 27, 2019 Report Share Posted March 27, 2019 I replaced a woodruff key last week, it stuck out a lot higher than that, are you sure its the correct size. Quote Link to comment Share on other sites More sharing options...
huski Posted March 27, 2019 Report Share Posted March 27, 2019 Why did it shear the key originally? Quote Link to comment Share on other sites More sharing options...
Tom_H123 Posted March 27, 2019 Author Report Share Posted March 27, 2019 5 hours ago, collyolly said: Did the key locate in the slot of the flywheel properly it does not seem to protrude very much and there appears to be a bit of damage to your crankshaft end as if something did not fit. Also I would agree the timing looks to be fully in one direction, not what I would expect to see as a factory setting it's as if someone has tried to soften the engine with the timing. It seemed to locate properly yes, I’m taking the bike to a local engineer who’s sons ride professionally as he’s only a mile away and also a friend of my step fathers 3 hours ago, wuckfitracing said: I replaced a woodruff key last week, it stuck out a lot higher than that, are you sure its the correct size. I was wondering if it was sticking out high enough... 1 hour ago, huski said: Why did it shear the key originally? I haven’t got a clue, what sort of things cause a key to shear? Quote Link to comment Share on other sites More sharing options...
Tom_H123 Posted March 27, 2019 Author Report Share Posted March 27, 2019 2 hours ago, huski said: Why did it shear the key originally? Actually I do know why, it’s because the previous owner was a cowboy and cut down a COPPER penny... everyone knows copper is a malleable metal and won’t last 2 minutes. Quote Link to comment Share on other sites More sharing options...
guy53 Posted March 27, 2019 Report Share Posted March 27, 2019 How about the taper of the flywheel ? Guy Quote Link to comment Share on other sites More sharing options...
Tom_H123 Posted March 28, 2019 Author Report Share Posted March 28, 2019 UPDATE: tried moving the stator plate to different position, back fires each time, not got a clue what to do now, Might take it to local mechanic. Quote Link to comment Share on other sites More sharing options...
cascao Posted March 29, 2019 Report Share Posted March 29, 2019 Maybe backfire sheared the key. Replace your spark plug and check connections, engine stop button, etc Quote Link to comment Share on other sites More sharing options...
collyolly Posted March 29, 2019 Report Share Posted March 29, 2019 Backfire possibly caused by incorrect ignition timing ! Quote Link to comment Share on other sites More sharing options...
faussy Posted March 29, 2019 Report Share Posted March 29, 2019 Are you seriously saying the previous woodruff key was made from a penny?! When i seen the state of the heads of the Philips screws i knew someone had obviously been playing silly buggers with your ignition at some point in the past Quote Link to comment Share on other sites More sharing options...
suzuki250 Posted March 29, 2019 Report Share Posted March 29, 2019 If you have taken the rotor off it will need timing correctly, unless you fancy replacing a holed piston Quote Link to comment Share on other sites More sharing options...
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