Yamaha Mt-09 (fz-09) Common Problems
Known issues to inspect before buying a used Yamaha Mt-09 (fz-09). What to check and how much repairs cost.
Throttle abruptness / snappy low-speed fueling
MINORTest slow roll-on in 1st gear, ECU flash helps
Fix cost: $0-$150
Stator and charging system failure
SERIOUSCheck battery voltage at idle, should read 13.5-14.5V
Fix cost: $300-$600
Subframe cracking under hard use
MODERATEInspect subframe welds around passenger peg mounts
Fix cost: $200-$500
Front fork seal leaks, soft suspension
MODERATELook for oil residue on lower fork legs and dust seals
Fix cost: $150-$350
Pre-Purchase Checklist
โCheck for stator charging output at idle
โInspect subframe welds for hairline cracks
โTest throttle response at low RPM roll-on
โLook for fork oil leaks on lower legs
Reliable, fun bike with a few known weak spots