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Ok here is a bit of unusual one? Don’t most motors pop off of forward due to a bad clutch dog? My motor pops out of reverse. Possibly the previous owner had the problem in forward and reversed the dog? I adjusted the cable to make sure it was going into full reverse, and the shift lever running down lower unit seems to working properly.
Before I open up the gear case (I picked up a new clutch dog and reverse gear) is there any other parts that I should look at for wear, or adjustment?Thanks,
Bob D
Don, when I shift into reverse with my Simplex that I rebuilt with all new parts (below), if I don’t hold it in reverse it comes out of gear.
Good point…..let me disconnect the cable, and just try using the shift lever on the motor and see what happens.
Only problem in upstate NY, I have to wait for the darn rain to stop. It has been ridiculous, every day for weeks.Thanks,
Bob D
A bad clutch dog/gear usually causes problems at higher speeds than you’d go in reverse. I’d suspect a cable or shift rod adjustment problem. Are your cables new?
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If Don’s idea works, then I’d replace the shift cable (actually I’d replace both). If it’s an original shift cable, who knows the condition. If someone has cut the inner cable slightly off, it will reduce the range of motion and cause the problem you describe.
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Divide and conquer is definitely the way to go. You have eliminated the control box and cables as your main problem. MY next step would be to pull the shift cover off the exhaust housing and grab hold of the shift rod and/or connector….maybe with needle nose vise grips….and try to limit up and down motion of the shift rods, while trying to move the shift lever back and forth. You would be checking for excessive lost motion in the linkage under the power head. I used to see some bad wear up there, sometimes. IF that checks out okay, loosen up the shift handle on the horizontal shift shaft, so it is free to move within its adjustment range. Don calls this “the fine adjustment.” Now, move the shift rod up and down, through full engagement, forward and reverse, and see if that adjustment is always within an obtainable place. (Now you’d be checking for excessive lost motion in the gear case.) I’m not sure how to better explain that. What I am trying to say is that if shift rod travels up and down more than the shift handle and shaft can travel, then you have a gear case problem, in my opinion. You might find a bent or worn shift fork, wrong size clevis pin, (I have seen it) etc. You may also have a worn out FORWARD gear, and someone over-adjusted the fine adjustment, to over-compensate for it, which leaves you short on travel in reverse.
Long live American manufacturing!
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Heed Bill’s advice, “lost motion”/slop could be the issue here. One more simple thing to try. Have an assistant hold that vertical shift detent out of the way against its spring pressure. Now spin the prop and shift into reverse to the engine its travel in reverse. Does the shift lever’s pin travel way past where the vertical detent rod would normally position it in reverse? If so, then I would suspect lost motion/slop as the issue.
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