footballshmootball

I've removed the pump now and have had 2 full nights out on it and its running perfect, even when fuel is low. I spoke to the guys at Splatshop but they haven't heard of anything like this before so god knows. Out of curiosity I may try and modify it like the 2013/14 bikes where there is a T piece between the pump and carb which feeds back into the top of the tank. Thanks for replies.

Hi guys, I have a 2012 Sherco 290 which did not have a fuel pump fitted when I bought it, it ran fine but thought it must come with one for a reason so I bought one and fitted it. Was running fine with the new fuel pump fitted but half first outing it started leaking fuel from the carb bowl overflow. I stripped carb and cleaned it all out and found the mount on the floats where the inlet needle attached was set too low so the needle wasn't stopping the incoming fuel once the bowl had filled causing the overflow. I had the carb set up again and it has happened again, could the pump be pumping in fuel against the needle hard enough to bend the where it attaches to the floats? I read somewhere about a 2.5mm fuel restrictor but I have no idea where or if that is relevant at all. Hopefully someone can help! Cheers

UPDATE: Ok so I'm pretty sure i've sorted out both the oil and water leak. Oil leak: Replaced the clutch casing gasket (not the o-ring) and the leak seems to be fixed. I went for the more expensive metal gasket rather than the paper one. Water leak: After we fixed the oil leak we started the bike and sure enough there was definitely a water leak coming from between the crank casings just under the exhaust port. Turn out the casing bolts were loose so had to remove the stator amongst other things to tighten back up and seems to have cured it. Thank the lord and fingers crossed as I was ****ting my pants with that one! Whilst doing this work to the bike I noticed that the previous owner has removed the diaphragm fuel pump. Has anyone ever ridden a bike with this removed? It seems to be running fine but not sure if it will affect it when its low on fuel. Thanks for replies.

I think thats is could well be to do with the sump pushing the casing up but everything looks straight unlike the pictures in that thread above. Maybe it has had just enough of a bump to damage the gasket but not the casing. Should have an update tonight.

Hi all, Just picked up a 2012 Sherco ST290, it's only done 2 trials and some practice and is in pretty good condition. I took it home and rode it in the garden for about 20 mins then stopped and checked the bike over. Firstly I've found there is an oil leak from between the clutch casing and the inner casing, on the bottom. Everything looks straight and no cracks so I assume it can only be the gasket which is getting changed tomorrow and will hopefully solve that problem. Secondly I think there could be a very small water leak which looks like its coming from the gasket between the 2 main casings just under the exhaust port. Has anyone had either of these problems? I'm sure the bike hasn't been ridden hard so seems weird to have gasket problems like this. Wouldn't expect to have to rebuild a 2012 bike thats don't 2 trials and been ridden by a woman the rest of the time! Thanks

Getting back into trials after quite a while out. Competed in the Inverness and district club and the Scottish championship from 2000 to 2004 in the schoolboy class, now I ride motocross, enduro and trials. Bikes I've had: Yamaha PW80 Yamaha YZ80 Fantic 200 1999 Beta Techno 250 2000 Beta Rev3 250 Kawasaki KX 125 1998 Gasgas TXT250 2010 KTM 150XC 2011 Kawasaki KX250F 2008 RM250 2012 Sherco ST290 Will be starting competing in the Inverness and district trials in the next few months, cant wait!