I recently removed the lower unit on my son's 2008 F9.9 Fourstroke to find why there wasn't any water coming out the weep hole when running. Turned out ther was nothing wrong with the impeller, but only an obstruction in the line to the cooling water manifold.
When reinstalling the lower unit, I apparently reconnected the shift linkage incorrectly, because when I put the boat in the water, and shifted into reverse to back away, I got no reverse. the RPMs climb appropriately as I move the engine control aft, but no reverse thrust.
In Neutral, I'm getting forward thrust, and in Forward, everything works fine up to full throttle. If I clunk it into reverse, it in fact goes to Neutral, zero thrust.
I read the Service manual, which says to screw the nut onto the shaft 5 turns. That yields the results I described above. So I put the shifter into remote so I could see/adjust the upper nut, and I ran it all the way up and down the threaded shaft going into the lower unit, in increments of about 1/8 inch, and tested the shifting action at each point.
The result is the same in all positions. When I put it in Neutral, there is forward thrust, and I cannot get any reverse. Forward works fine.
Did I misinterpret the Service Manual? Should I have removed the long nut on the upper shaft going to the shift linkage, then reinstalled it to the invisible shaft above 5 full turns? Or does that nut just turn freely on the upper shaft, as I have been assuming?
Help! I'm baffled, and feel like an idiot. Can anybody help?
Muldoon
When reinstalling the lower unit, I apparently reconnected the shift linkage incorrectly, because when I put the boat in the water, and shifted into reverse to back away, I got no reverse. the RPMs climb appropriately as I move the engine control aft, but no reverse thrust.
In Neutral, I'm getting forward thrust, and in Forward, everything works fine up to full throttle. If I clunk it into reverse, it in fact goes to Neutral, zero thrust.
I read the Service manual, which says to screw the nut onto the shaft 5 turns. That yields the results I described above. So I put the shifter into remote so I could see/adjust the upper nut, and I ran it all the way up and down the threaded shaft going into the lower unit, in increments of about 1/8 inch, and tested the shifting action at each point.
The result is the same in all positions. When I put it in Neutral, there is forward thrust, and I cannot get any reverse. Forward works fine.
Did I misinterpret the Service Manual? Should I have removed the long nut on the upper shaft going to the shift linkage, then reinstalled it to the invisible shaft above 5 full turns? Or does that nut just turn freely on the upper shaft, as I have been assuming?
Help! I'm baffled, and feel like an idiot. Can anybody help?
Muldoon
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