So I bought a Fazer today 2001 model, that was apparently kept in very good condition and with all services done on it from professional workshops. However the moment i got on it, i noticed it stutters and bogs down, basically little to no power below 4k rpm ( I guess not so uncommon).
I decided to ride a bit on high rpms until i get home, but then i was met with very violent vibrations. So what could be wrong? The owner told me he recently changed the spar plugs but that was probably triggered by something too, so it either aggreviated the problem or it didnt have any impact.
I would be really glad if you provide me with a list of possible solutions.
The symptoms and noise is very similar to these two videos