ok, my baought the quad new,, had slightly noisey valves.
rode it for a couple of months,, took it back too dealer for valve adj.
he siad they were very tight, he re adjusted and now they are very noisey.
he says this is normal,, they should be noisey, if they arent then i would have problems.
is this true,,anyone with a 400ex, are yours noisey also.
thanks

 

yea mine also had very tight valves a few months after ownng it....I ajusted my valves and they are now noisy too...think its normal though?....if they werent noisy that would mean there is no clearence....good luck