USED ON MTD LAWNFLITE MODELS. MTD Lawnflite 504/505/506/507 (1983/1995) 13-504/507. Lawnflite (MTD) > Lawn tractors > (1987)137-504- 611. Lawnflite (MTD) > Lawn tractors > (1988/1989) 138-501-611. Lawnflite (MTD) > Lawn tractors > (1988/1989) 138-504-611.
