Logo
FULL SITE MENU

T8 shifting rod adjustment

T

The Machinist

New member
I recently purchased a older Yamaha T8 that needed a new impeller. However I could not get the coupler up high enough to disengage from the lower rod. Had to cut the lower rod under the jam nut to be able to remove the lower unit. But the coupler was seized on the upper rod and with minimal amount of room still could not get the coupler off. I had to pull power-head to access more of the upper rod and coupler to finally get it off. Ran tap & dies to clean up threads. Now my question is where do I locate the coupler nut on the upper shifting rod as a starting point in reassembly ??
 
Did you replace the shift cam assembly which you cut at the top?

What is the complete model of the motor?
 
I cut that lower rod as low as possible below the threads, enough that it was welded back on saving all threads. Cannot give model or serial number as it was a saltwater motor, with all ID gone. It has an older 2 star emission certification sticker. It is also a Extra Long shaft, but that should not make any difference in the adjustment setup. From what I can gather, when final assembly is done, the upper rod & lower rod ends should be early touching end to end. Is that correct???
 
Yes to the upper rod nearly touching the lower rod when the coupling nut is turned downward to capture the threads on the lower rod.

The coupling nut should simply screw down enough to capture the threaded portion on the lower rod. The jam nut is then raised to lock the coupling nut into place.

Has the lower unit been shifted into reverse with the upper shift rod also being in the reverse position?
 
Back
Top