XT600e running badly
I'm in desperate need for some expert advice / opinions and hope somebody can help.
The motor on my XT600e (2001 model) runs well. Starts on the 1st push of the button, idles well, does not smoke - everything fine.
About 2,000km ago, I noticed a constant 'rocking back and forth' sensation.
The motor does not miss-fire or strains when this sensation occurs. This 'rocking' sensation is really very pronounced at low speeds (20-30km/h) in 1st & 2nd gear. When in 5th gear I do not have the 'rocking' sensation. Only 1st, 2nd, 3rd & 4th. When I pull the clutch when I feel the 'rocking' sensation, it stops immediately.
I thought it might be a carb setting so followed the advise posted on the HUBB here and adjusted the air / fuel mix to a point where the plug colour is chocolate milk - not change in the 'rocking'.
I adjusted the chain as per the manufacturer's specs, adjusted valve clearances 100% correct, changed the plug, changed the coil & ignitor unit, made sure the air filter's 100% clean, checked wheel bearings, cleaned all fuel filters, cleaned carb - no change in the 'rocking'.
Can anybody shed some light on where the problem may be?
Thank you very much for the feedback