1975 Johnson 6hp (6RL75R) — idle timing off due to play in throttle shaft, need diagram of shaft/socket coupling

[Crosbyman]

i know folks love100s but 75 should not stop your engine from running... maybe not full strenght at WOT but fine for trolling... some engines like the 9.5s work fine at 65 psi. put the beast aside for a week or two start fresh. recheck crab's slow speed circuit carb, side channel to the top clear all passages under the dime size plug make certain idle needle tip can be seen poking out when you have that round plug taken out... open LS needle per spec


patience brings joy...

 

[flyingscott]

I finally think I have identified the problem as being low compression. It shows around 75 for both cylinders. If I add a little oil to the cylinders, the compression increases to around 90. At this point, I'm fed up with trying to fix the motor in home conditions.

Compression is fine nothing wrong with it.

 

[racerone]

Your location?----Find the local chapter of the ---aomci----You may be able to find a gray haired member who knows this motor and how simple they are.

 

[meser300]

Your location?----Find the local chapter of the ---aomci----You may be able to find a gray haired member who knows this motor and how simple they are.

Mission, BC, Canada

 

[racerone]

I am 5 days driving away.---There must be a local shop that can sort this out in minutes.

 

[Crosbyman]

stuff to read

Johnson 6hp

download this free book look up the carb section on models CD AD FD these carbs all work the same way and need cleaning the same way

https://www.socalaomci.com/library/johnson_service_manual_10th_edition.pdf