Boat Repair Questions? Ask a Marine Mechanic for Answers ASAP
Hi my name is Tan I will assist you.
When you say kick out of gear does the boat stop all forward motion or just slows down?
Can you shift in to forward or reverse or does the boat not move at all?
Please explain with as much detail as possible.
Does the speedometer read at all or intermittent?
Have you hit anything?
Could I get an engine serial number please?
It will stay in gear under approx. 3000 RPM. It comes out of gear, but will continue to run at higher RPMs. I can shift into both forward and reverse. Boat will run at slower speeds.
Speedometer worked just fine, until the transmission problem occurred. I don't believe we hit anything, but we were in some weeds. I did notice a very tiny ding on one of the prop blades.
Mercruiser 3.0L, 135 HP, serial #1A642693
If the engine rev's and the boat doesn't move. The prop hub is likely damaged and will not allow you to go over 3,000 rpm's.
Remove the prop and check the hub. This is the hub kit click here for you drive and prop. The black part will be cracked and damaged.
These are designed to absorb any kind of impact or running aground so you don't damage the drive.
The speedometer pick up is on the very front of the drive, you will find a very small hole that gets clogged up with debris use a small drill bit to clean the hole out. The hole is in the very front of the lower unit about 3 inches up from the nose of the lower unit.
Post back with questions.
Disassembled hub. Black part is completely intact.
Any other ideas?
Prop locks when turning to the left in forward. It also locks when turning to the right in reverse. Gear lube looks clean.
The only thing I noticed out of the ordinary when it jumps out of gear is that the oil pressure guage jumps up for an instant.
Yes, the motor continues to rev when it jumps out of gear. When I bring it down to a lower RPM, it re-engages.
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