NHTSA campaign 14V056000
Hazard
Honda is recalling certain model year 2013 CB500 (FA, F, XA, X) and CBR500 (RA, R) motorcycles. The rocker arm shaft retaining bolts may have been manufactured incorrectly resulting in the bolts loosening during engine operation. A loose bolt will initially result in a slow leak of engine oil, but if not addressed, the bolt can come out of the cylinder head entirely.
Consequence
Without a bolt, the engine will have reduced power which may result in a stall, increasing the risk of a crash.
Remedy
Honda will notify owners, and dealers will replace the rocker arm shaft retaining bolts, free of charge. The recall began on March 11, 2014. Owners may contact Honda Customer Service at 1-866-784-1870.
The text above is quoted verbatim from the NHTSA record. Confirm the affected units and the remedy with the manufacturer or NHTSA. Recall data may be incomplete, delayed, or superseded.