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Message
Shift linkage on a Yamaha outboard
Posted on 6/30/18 at 3:27 pm
Posted on 6/30/18 at 3:27 pm
Took the boat out today and it cranks, but doesnt go in "neutral", just grinds in reverse and doesnt gon reverse at all if I actually try to go in reverse. Forward works fine but cant turn more than 4500 rpms. I think it's something with the shift linkage and hope its nothing with the lower unit. Anyone ever have this problem?
2
Posted on 6/30/18 at 4:01 pm to maisweh
Sounds more like the clutch dog in the lower unit. Your shift linkage moved the clutch dog forward and backward. The clutch dog fits over the prop drive shaft spline and it slides forward and backward. Your linkage is moving this piece. Moves forward and it engages gears that turn the prop shaft one way... moves backward and it engages gears that turn prop shaft the other way (reverse).
Normally if the clutch dog gear is wearing the motor has a tendency to "bump" out of gear and it might grind a bit also. Basically you are going along and all of a sudden it bumps into neutral. Doesn't sound like the linkage but hard to tell. Check for small metal pieces in your lower unit oil.
Normally if the clutch dog gear is wearing the motor has a tendency to "bump" out of gear and it might grind a bit also. Basically you are going along and all of a sudden it bumps into neutral. Doesn't sound like the linkage but hard to tell. Check for small metal pieces in your lower unit oil.
Posted on 6/30/18 at 4:05 pm to Tridentds
Oh its grinding alot... but only in reverse, not forward. And doesnt bump out of gear either. From when I crank the motor up, the prop is spinning.
Posted on 6/30/18 at 4:44 pm to maisweh
Sounds like the clutch got somehow mispositioned. Did you remove the lower unit recently?
Posted on 6/30/18 at 5:05 pm to tight lines
No, last year or year before.
Posted on 6/30/18 at 10:26 pm to maisweh
these things dont just "stop working right", unless you hit something with the lower unit to "maybe" bend the shift linkage, which is very near impossible, then something internal to the lower unit is buggered up and time to bring it to the shop before damaged becomes worse
Posted on 7/2/18 at 6:10 am to keakar
quote:
these things dont just "stop working right", unless you hit something with the lower unit to "maybe" bend the shift linkage, which is very near impossible, then something internal to the lower unit is buggered up and time to bring it to the shop before damaged becomes worse
didn't hit anything with this lower. tore it down, seemed the cables and linkage were out of adjustment, the nuts were loose. cranked up and the prop didn't spin. going to see if it fixed the issue this weekend.
if it was something in the lower unit, then the problem would replicate itself in forward as well since its the same gears, not a separate reverse gear.
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