Black Mountain Rider Posted February 10, 2019 Share Posted February 10, 2019 Hi Everyone,I am new to this forum and hope you can offer some advice on a problem with a Husqvarna 125. The bike belongs to my neighbours son who recently purchased the bike in supposedly good running order. Unfortunately it seems it has been in the hands of someone whohas not been to kind to it in the past. Having some mechanical knowledge I have offered my help to try and sort out some of the issues, my main interest is with vintage stationary engines so this is a little different for me. The problem we have at present is oil leaking from the casing on the ignition side. I am guessing this is a crankcase seal gone or maybe the bearing as well? We took the cover off and found what is in the photo attached. My questions are; I presume the centre nut holds the rotor on via a woodruff key...would this be a right or left handed thread? Can the seal be accessed from outside or will the engine need to be split?Hope someone can offer some advice about how we proceed next, it's been a frustrating journey so far for the lad.Thoughts appreciated.TimHusqvarna%20125 Quote Link to comment Share on other sites More sharing options...
mikestrivens Posted February 10, 2019 Share Posted February 10, 2019 Hello and welcome Quote Link to comment Share on other sites More sharing options...
rennie Posted February 10, 2019 Share Posted February 10, 2019 Hello and Welcome You'll need to post again before we can see your pic. Quote Link to comment Share on other sites More sharing options...
Black Mountain Rider Posted February 10, 2019 Author Share Posted February 10, 2019 Thank you Mike,Struggling to get the photo to attach?Will give it another go.Tim Quote Link to comment Share on other sites More sharing options...
oldgrump Posted February 10, 2019 Share Posted February 10, 2019 Hi Tim, welcome to the forum.It should be a normal r/h thread, so when engine running the nut tightens up. When you undo nut there may be a internal thread inside flywheel, that takes a puller and pulls off flywheel.As you say it's on a tapered shaft with a woodruff key. Once you remove flywheel there's normally another plate that has the stators on, then behind that is the seal.The seal sometimes can be removed from engine at this point, But on some 2 strokes the seal has a lip and can only be fitted after a complete engine strip and fitted from the inside.The Bearing is normally fitted to the crankcase, again only ever fitted internally.I would see if you could locate a manual, or a crankshaft seal to see if there's a lip on it. And if you have oil coming out then it may mean r/h seal has also gone allowing oil from gearbox into combustion chamber. Quote Link to comment Share on other sites More sharing options...
Black Mountain Rider Posted February 10, 2019 Author Share Posted February 10, 2019 Thank you oldgrump for your reply.I will try and locate a manual and spec the seal. Can anyone suggest a good uk parts supplier for this make of bike, if thats allowed?Tim Quote Link to comment Share on other sites More sharing options...
oldgrump Posted February 10, 2019 Share Posted February 10, 2019 Hi, Try this website, then dealer search, List all main dealers in UK. www.husqvarna-motorcycles.com, what model 125 is it and year? Quote Link to comment Share on other sites More sharing options...
Black Mountain Rider Posted February 10, 2019 Author Share Posted February 10, 2019 I am told It's a Husqvarna cr 125 2007.I will check out the dealers, thanks again.Tim Quote Link to comment Share on other sites More sharing options...
oldgrump Posted February 10, 2019 Share Posted February 10, 2019 Hi Tim, [mention]Black Mountain Rider[/mention] Try this link for Manual https://www.manualslib.com/manual/948706/Husqvarna-Cr125-2007.html. Quote Link to comment Share on other sites More sharing options...
Black Mountain Rider Posted February 11, 2019 Author Share Posted February 11, 2019 Thats just what we needed Oldgrump, thank you.Have located a seal set but cannot see if it's a lipped seal or not, will read the manual tonight to seeif we need to split the crankcase!Tim Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.