Hi everyone,


A while ago I rebuilt my carb, since it was overflowing when engine was off (leaking into cylinder) and overflowing when running idle. As expected some of the rubbers were shot.

I used this set: http://www.ebay.de/itm/KR-Vergaser-Reparatur-Satz-Carburetor-Repair-Set-x4-YAMAHA-FZS-600-Fazer-98-03-/162156361779


Since then, the carb is not leaking anymore, everything seemed fine.
However, now the engine hesitates between 2000 and 5000 rpm, especially near the 4000 rpm range. I've set the pilot screws as listed in the manual to 2 turns out.
But I remember when overhauling the carb, the screws were out less than 2 turns (rather 1 or 1.5).


In high rpm's or at high trottle positions everything runs great.
Things I've checked/done so far:
-checked the condition of the TPS (throttle sensor position) --> goes nicely to 5000 rpm, so it's OK
-replaced the spark plugs
-checked and rechecked the pilot screw settings (2 turns out)
-spraying water on the exhaust manifold when idling: they seem to be all quite at the same temperature
-reduce the pilot screw turns out (1 turn out instead of 2 turns out) on second cylinder --> no change notable


When I check the spark plugs, the spark plug on cylinder 2 looks realy black.
Spark plug 1, 3 and 4 look like this:



While spark plug no. 2 looks like this:



Any suggestions on what to do?
Open up the carb again and see if there is something wrong with the pilot screw of the second cylinder? Or could this be caused by anything else?

Thanks guys!

Hi everyone,


I just bought (2 weeks ago) a fazer FZS600.
I bought the bike when the fuel was on reserve, so I never noticed at that time that the fuel gauge doesn't work.
However, the light goes on when in reserve.

Any ideas what might cause this (gauge not working, warning light does work)?
I checked the connection and seems like it's OK.

I'm also wondering if I should replace the front sprocket nut, on this 2001 model?
Should I order at dealer or is there a better aftermarket alternative?

Best regards,
Jan