Hi yes13q, welcome to Outdoorking. Hopefully we will be joined in this thread by some of our Greenfield owners, some of whom have the 12-32 model.

Starting with the easy bit, heavy steering is likely to be caused by one of three things:
1. Flat tyres. You have already checked this and it is not the problem.
2. Damaged components. If you have something like a bent tie rod or king pin, you may have substantial toe-in or toe-out of the front wheels (i.e., they do not point in the same direction).
3. Lack of lubrication of the mechanism, in particular the king pins or steering gear.
4. Worn out steering mechanism, in particular at the bottom of the steering column, but wear problems in the king pins can also be a problem.

Turning to the problem of not getting much tractive force in reverse, there are a couple of things you need to check. Because it is an assymetrical problem (only in reverse), I suggest you begin by checking that the automatic tensioner of the drive belt does not need a little manual assistance right now. The automatic tensioner works by sliding the pulley circled in green:

[Linked Image]

There is a ratchet mechanism which allows the pulley to slide in one direction only. Sometimes the pulley does not quite manage to move a full notch, and belt slip results. I suggest you use a lever to apply some incentive to it to move in the belt-tightening direction, listening for a small click from the ratchet.

If it isn't belt slip, there is likely to be a problem with the clutch linkage. If you had lost forward but not reverse, the obvious suspect would be a worn-out forward clutch, but it would be unusual for the reverse clutch to be worn out before the forward clutch, so begin by taking a look at the linkage. Your Greenfield appears to be an early model, like the one in the picture above, with the long shaft through the large pulleys/clutches. I think there were two different clutch linkages on those, one with an adjustable pull-rod from the pedal to the clutch fork (the fork is between the two pulleys/clutches). If yours is the adjustable-rod model, see if you can adjust that rod to get more symmetrical fork movement between forward and reverse.

One possibility to consider is that the forward clutch is worn out, and your ancestor adjusted the clutch linkage to compensate.

When you've checked out these points, please post some pictures of the machine, its steering, and its clutches, drive belt, and clutch linkage, together with your report on what you find. We should be able to work through your problems (there is quite a lot of history on Greenfields in our archives, and quite a few Outdoorking members have Greenfield experience) so please continue this thread.