No Reverse

[mrelmo]

Some one told me he though that I may have slack in my shifter cable as the shift lever was hitting the ignition box when it is put in reverse, well today I could feel it go into reverse but it was hard to get it into reverse but then there is no throttle. 1995 70HP. how do I go about adjusting the shift cable.

[boats.net]

You need to be able to move lever to full reverse without hitting anything, if can't then need to move what ever it is that's in the way or put a spacer under control box.

[mrelmo]

OK I understand about the spacer, but explain the movement of the cables please. There are 2 cables throttle and shift. My understanding is when the control lever is moved (forward or reverse) the shift cable has a short travel, engages a detente and some how is no longer affected by the lever. The throttle cable will have a longer travel but when you go in reverse is the throttle cable moving in a opposite direction?

[Joe Reeves]

Originally posted by mrelmo View Post

OK I understand about the spacer, but explain the movement of the cables please. There are 2 cables throttle and shift. My understanding is when the control lever is moved (forward or reverse) the shift cable has a short travel, engages a detente and some how is no longer affected by the lever. The throttle cable will have a longer travel but when you go in reverse is the throttle cable moving in a opposite direction?

Moving the single lever into forward or into reverse causes the shift lever alone to move the inner shift cable approximately 15 degrees in the appropriate direction, forward or reverse.

After that 15 degree movement, the mechanical aspects within the control box switch the cable movement to the throttle cable which "always" moves in the same direction which is to extend its inner cable to advance the throttle.

(Centering Shift Cable)
(J. Reeves)

When all is as it should be, the proper method to adjust the shift cable is to disconnect the cable from the engine. Move the shift linkage on the engine to find the center of the play in neutral, and when found, leave it centered.

Now, grab the end of the shift cable sleeve, push and pull it to find the center of the play there, and center that play.

Adjust the trunion on the threaded portion of the shift cable so that the centered play of the cable lines up with the centered play of the engine's shift linkage. Install and lock the shift cable with the retaining clamp in that position. That's it.

[mrelmo]

Thanks for the explanation, when I move the lever I can feel a detente for forward, reverse and neutral. The 15 degrees of travel is interesting.

[mrelmo]

what kind of rpms should I get when in reverse

[Joe Reeves]

Originally posted by mrelmo View Post

what kind of rpms should I get when in reverse

It varies.... but in any case, nowhere as much as what you get in forward gear.

[mrelmo]

OK Joe this issue came after I replaced the impeller the more I think about it the rod may have spun when I pulled the lower unit. Rather than mess with the cable I am thinking of pulling the lower unit and checking the rod length, I took a 36" steel scale and put a Number 10 screw through it at 21 21/32 inches. In your opinion do you think this would be a better starting point than playing with the cable. If it is not going into reverse I am guessing the rod is too short, and if it is not engaging reverse then there is no rpm from the throttle

[Joe Reeves]

That L/U shift rod measurement, whatever it's supposed to be (I don't have it here).... yeah, that's got to be perfect before doing anything else... so if it were me, I'd drop the lower unit first to make sure that's where it belongs.

In neutral, the measurement must be correct, measuring from the top surface of the lower unit to the center of the shift rod hole.

[mrelmo]

On these evinrudes it is a real pain trying to lineup the rod upon reinstall as the rod wants to rotate as the unit is installed, you could really use an extra hand with long needle nose for the last inch or so, unless you know of a better way to line up the rod

[Joe Reeves]

Before installing the L/U... move the shift lever so that the shift clevis is moved up out of the way of the shift rod when installing the unit.

[mrelmo]

Hmmmm, nice

[mrelmo]

YAHOO upon readjusting the shift rod and reinstalling the lower unit, I noticed that the label on the CDI module looked like a new part, (I bought this boat last year at the end of the season) and the shift lever was hitting the CDI module, also I saw a mounting hole that had several wear marks on it to the rear of the module apparently it looks like someone replaced the module and used the wrong mounting hole, once I used the more rear ward hole it gave my shift lever all the room it needs for full travel, as you can see I have been working on this since mid june. BACK ON THE WATER