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Good day everyone, I have done a compression test on my bike a f650 gs 2002 and can only get 75 psi with no oil and 90 psi with some oil added ,I think I will remove the head and do a top end job . can someone help with a work shop manual ?

egbert
 

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Hi Egbert,
plenty appear on eBay, copyright issues if some one points you to online version ?
suggest check valve clearances first, may save your self some work,
but sounds like rings/bore with oil increasing PSI,
 

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Good day everyone, I have done a compression test on my bike a f650 gs 2002 and can only get 75 psi with no oil and 90 psi with some oil added ,I think I will remove the head and do a top end job . can someone help with a work shop manual ?

egbert
The problem doing a compression test on an F650GS is that it is fitted with an auto compressor which reduces the pressure in the cylinder on start up. It's possible your measured pressures are ok. Before going too far, I would take off the valve cover, remove the decompressor and then try the test again. If you then get less than 150-180 psi, a top end overhaul is probably required.
 

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Good day everyone I recently bought a f 650 GS 2000 model which struggles to start in the morning. I have to give it quite some throttle to get it running and have to constantly play with the throttle or to keep it alive or it will die on me I recently did a compression test and it showed about 35 psi ??...Is that even possible on a bike like this ? Considering I can still spin the wheel in second gear if I'm reving it and the bike still pulls really good. I also wanna add that it does have tons of oil in the air tank, about 200ml comes out when i drive about 50 km
 
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