Thanks. I guess I had always just assumed that the belt that drives the wheels should be straight. In fact it looks like it was also on a slight angle.

I am beginning to think I am wasting my time and should just put the old engine back on. I went to a motor "expert" and he told me the Honda GX-200 will not have the correct torque to drive this machine properly. Does he know what he is talking about?

The G300 torque was 1.5 kg·m; 10.8 lbf·ft at 3,600 rpm.

The GX-200 torque is 1.3 kg·m, 9.0 ft·lb) at 2,500 rpm (about 1.8 kg.m at 3,600).

All three have a maximum RPM of 3600.

G300 had 7 HP.

GX-200 has 6.5 HP. The Chonda clone I purchased is rated at 7 HP, which might be boasting a little.

So the GX-200 has a little less HP but equivalent torque. Personally I can't see the problem, or am I missing something?