Tucson, if you study the link that runs between the dash mounted crank and the door, you should find that there are a set of stops that are adjustable under the dash. They limit the travel of the crank as it goes over center. You will find this information in Sec. 3, pages 7 & 8.
If you can't push the pin in far enough to pop the door open, maybe those stops need some work. If the door stops are set right, I don't think that it will take much of a push to pop the door open.
If that's not the problem, maybe there's something wrong with the pin hardware. Does it have the rounded end?
For what it's worth.
would like to use my stock door closer and latch on my 4106 but can't unlatch from out side. looked under dash, all parts are in place but can't push the handle far enough ( from outside) with the old push rod to unlatch. Any of you guys ever adjusted one of these? according to the book the only adjustment in the mechanism is a turn buckle sort of adjustment in the main link to the door.
Am I not seeing something? Maybe another adjustment?
Hope someone knows..............Tucson