Have a dealer replace the air filter element more frequently if you are riding in unusually wet or dusty areas. Yamaha MT- 125 Pdf User Manuals. Haynes Workshop Manual Yamaha MT- 125, YZF- R125 & WR125R/ X Repair Service. This manual should stay with this vehicle if it is sold. Page 1 OWNER’ S MANUAL MT- 125 MOTORCYCLE Read this manual carefully before oper- ating this vehicle. Page 2 EAU46091 Read this manual carefully before operating this vehicle. MT125 MT125A BR3- F8199- E0. Manual Description Replacing the air filter element and cleaning the check hose The air filter element should be replaced at the intervals specified in the periodic maintenance and lubrication chart. Haynes Workshop Manual Yamaha XJ900F FoursNew Service Repair See more like this.