2 vent plugs?

[racerone]

Picture in post #7.------The plug at the lower ( second from the bottom ) front may have something to do with the shift mechanism.

 

[boscoe99]

The model is c40elrq, I'll get the pic posted when I learn how to get it posted

 

[Teseal]

Shift Mechanism, interesting. When I can I will remove the plug and peek inside to see if/how it aligns with the shifter.

Also I will try to interpret the sn number and post it, the tag is damaged and hard to read.

 

[Teseal]

sn 6E9 L 552857
The center plug does align with the shifter wedge, probably more towards it's top but I couldn't tell by looking into it because it's so small. The plug itself is smaller than the top and bottom ones and is the magnetic plug.

 

[Teseal]

Geez I hate to bug you guys again but I still could use some advice, back to the lower unit for the Yamaha c40elrq. Testing the unit for shifting before reinstalling yesterday I ran into a problem. Neutral is fine, free and no noise, forward the prop locks in one direction and ratchets the other but when shift to reverse the prop locks both direction and will not turn. Put some force on the drive shaft still seemed locked and wouldn’t turn. Tried pushing the shift rod down further but it didn’t move much nor did it change anything. Tried reverse again today before disassembling and found that now it is still locked both directions but with a bit of force it would at least turn the driveshaft. Turns it in both directions. Yesterday I loosen the carrier jam nut to pull the prop shaft and that made the difference. Still not right but seems loosening freed the reverse gear to at least turn. As I mentioned before my goal was to replace the driveshaft bearings so the prop shaft assembly was not disassembled.

Any thoughts on what to look for?

 

[racerone]

Ratcheting in one direction when in forward is NORMAL.

 

[Teseal]

Yes understand forward and neutral are normal, reverse is the problem.

 

[Grub54891]

Hopefully you didn’t remove the screw for the shift mechanism. If you did it may have dropped the shift fork.

 

[racerone]

I doubt that there is a shift fork in there.

 

[Grub54891]

Yeah, on my old evinrude it has a shift fork retaining plug. I just don’t know if the op’s has one.

 

[Teseal]

No shift fork in this 40, it has a three step shift wedge that positions the spring loaded shift plunger and clutch.

 

[Teseal]

Guess the question I need to answer is what is keeping the clutch from backing off the reverse gear. Something with the spring? Nothing appeared to be physically damaged. Don't know how it could be the shift wedge. Wish I knew how it was reacting before I disassembled it but I wonder now, because I didn't have the prop shaft assembly apart, if it could have been this why prior and still power the boat ok in both gears?

 

[Teseal]

Maybe I misread some of the posts but after removing the prop shaft assembly and simulating a shift into reverse by pushing in the plunger, it is hard to believe there is enough spring left to allow the clutch to push back against it to clear the reverse gear. The plunger in the picture is pushed about as far as it will go just to engage the clutch to the gear.

 

[Teseal]

It's not suppose to rachet in reverse. Going to get it ack together and tank test it.

 

[99yam40]

it is my understanding that it is spring loaded to forward.
you have to compress the spring to put it into neutral anf reverse