imported post
When you put the case back together , are you sure the shift spindle was indexed correctly on the shift arm ?
If your trying to shift with the shifter lever , is it set correctly on the gearshift arm ? If its mounted a spline to high it will hit the bottom of the cylinder head .
4 pins are correct . you push and pull to move from neutral to first / back to neutral into second . same pin works in both directions for that one .