johnson 18 hp fd-19
So I took the boat out yesterday after resealing the lower end. When I had it apart everything look perfect inside, and it went back together great. Actually its pretty simple. So at the end of the day Im heading back to the dock running at 3/4 throttle and the motor starts over revving. I think ok must have lost the shear pin due to hitting some debris. So after coming to a stop I hit the gas again and Im moving again, Im doing about 10 mph so I throttle up higher and it starts slipping again. This time I take it out of gear and take a look, everything looks good no broken prop. I check reverse, check foward it shifts and sounds perfect. So after I get the boat trailered I take the prop off and the shear pin isnt sheared, hmmm. So my next thought is maybe the prop hub is slipping, so when I get home I checked the hub and I cant get it to slip, maybe not enough force? One thing I notice is the shear pin isnt brass, looks like steel. I will check it with a magnet tonight. So I check the lower end fluid and it looks perfect, no water or metal shavings. I drained about 3 tablespoons. So Im a little stumped at this point. I really dont want to take the lower end apart again because I cant see it being the problem, any suggestions? Sorry for the long post. Thanks.
So I took the boat out yesterday after resealing the lower end. When I had it apart everything look perfect inside, and it went back together great. Actually its pretty simple. So at the end of the day Im heading back to the dock running at 3/4 throttle and the motor starts over revving. I think ok must have lost the shear pin due to hitting some debris. So after coming to a stop I hit the gas again and Im moving again, Im doing about 10 mph so I throttle up higher and it starts slipping again. This time I take it out of gear and take a look, everything looks good no broken prop. I check reverse, check foward it shifts and sounds perfect. So after I get the boat trailered I take the prop off and the shear pin isnt sheared, hmmm. So my next thought is maybe the prop hub is slipping, so when I get home I checked the hub and I cant get it to slip, maybe not enough force? One thing I notice is the shear pin isnt brass, looks like steel. I will check it with a magnet tonight. So I check the lower end fluid and it looks perfect, no water or metal shavings. I drained about 3 tablespoons. So Im a little stumped at this point. I really dont want to take the lower end apart again because I cant see it being the problem, any suggestions? Sorry for the long post. Thanks.
