I had a 49 M. They made an MT (tricycle) and an MC (crawler).
They didn't have the pop-pop like their bigger brothers, but they will pull their hearts out.
I had a spring shank cultivator/chisel plow, a 1x16 rollover plow (never could get it to work right), and a 7 ft sickle mower with mine. It had weights front and rear PLUS had calcium front and rear, so it was a heavy little thing.
6 volt (obviously) electric start, thermosiphen water flow (no water pump). Mine had a belt pulley behind/under the seat, but the paper wheel on it had fallen apart over the years. No external hydraulics on mine; only the implement lift mechanism.
I bought mine in 1975 for about $800 (ran, but rusted), used it until 1985 (painted, decals, new wire harness, welded up gas tank leak), and sold it for $2K. At times I wish I had it back, but oh well.
When it was pulling hard in the evening, you could see the muffle glow RED! You knew you were pushing it too hard when antifreeze bubbled out the overflow.......
Ah, the memories...................
ron