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Vehicle report

2020 YAMAHA YZ250FX

Compare every YAMAHA YZ250FX yearNHTSA and EPA records

Service bulletins

1 bulletin

Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.

M2020-006

Service Bulletin/Repair Instructions

Certain 2020 YZ250FX Models - Rich Running Condition - ECU Reprogramming Some units may experience a condition where the engine is hard to start due to a fouled spark plug. The 2020 YZ250FX’s ignition timing and air/fuel ratio were set to meet this model’s target of good low speed torque for off-road closed-course competition. When riding in certain conditions, the slightly retarded ignition timing and richer air/fuel mixture may lead to the spark plug fouling, causing a hard-starting condition. To remedy this condition, Yamaha has revised the ECU programming to address the rich running condition.

Reading this report

Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.