Massey Harris 101 Gear B

Massey had the "Twin Power' feature, which was a bit of an advertising gimmick. What it did was enable the operator to allow the governor to increase engine speed past the regular RPM setting in two situations - first, when you are shifted into 4th or road gear, and second when you are doing belt work. Your friend didn't have a pulley, but the transmission (or at least the shifting platform) was still the same.

On the front of the transmission housing on the right (carb) side, there is a little box-like structure that is activated when the tractor is shifted into 4th gear, or in the 'B' (belt) location on the shift housing. There is a little lever that comes out of this structure that moves forward and activates a long control shaft that moves to the governor. At the governor, this long shaft moves a cam forward which somehow allows the governor to go past the regular speed control. On my first Massey, this long shaft was missing (although the little box and lever was there). On a fully equipped and operating Twin Power Massey, there are 3 horizontal rods along the right side of the engine. One from the throttle control to the governor, another from the governor to the carb, and this 3rd long one from the little box to another location on the governor.

When you shift your tractor into 4th, or into 'B', the little lever on this box will move forward (whether or not the control rod to the governor is there or not). The actual way that it works at the governor I do not understand, nor do I want to. If you stand beside the tractor and shift it into either 4th or 'B', you will see that little lever click forward. Maybe you don't have the control rod, or maybe you don't even have the box. This whole thing is probably really confusing now.