Remove the shift shaft and cam assembly from the drive. Turn the drive shaft and see if you can move the clutch (in between the gears) up or down and get it centered. Also see if the timing marks will align by rotating
Also does the cam center when removed?
INFO Only
Mercruiser have been making 860246Q11 for a couple years and there are issues with the castings. Merc knows what the problems are but may not ever fix, who knows. Includes the ceramic coated
Bringing this up from a OSO member discussed with Merc and they will not fix...
What is the drive serial number?
Could be a couple things, O rings slipped out of place, incompatible lower with up
Seals 3, 4, 5
https://www.mercruiserparts.com/bam/subassembly/30967/1943/220
The antisiphon valve is attached to the fuel tank and the rubber fuel line attaches to it. It is a spring and ball to keep gas from siphoning into the bilge if the line breaks.
You traced the Red/Wht wire to a 20amp breaker and had 12V on both sides. Good this means you don't have a fuse you have a breaker and its is passing voltage so all goo on the Red/Wht to pin 30 and 85 of the relay. You should have 12V on both terminals 30 and 85 of the fuel pump relay.
Pin...
Post a pic of your ignition module should look like item 9 mounted on a plate
https://www.mercruiserparts.com/bam/subassembly/31480/2694/50
Double check your firing order
The ECM turns ON the fuel pump by applying a ground to pin 86 on the relay from pin J1-23
Place meter probe on pin 86 of the relay Black/Yellow wire. With the key OFF you should see 12V on the Blk/Yel, and when ignition key is turned to ON it should go to zero volts
The GXI-B uses a Tan/Black wire on the ground side of the beeper (on the motor) and that wire goes to pin J1-8 on the ECM and also to pin 6 on the 10 pin connector. Pin 4 goes up to the helm and connects to the alarm under the helm
Leaking on the exhaust side will have nothing to do with overheating, it just puts water in the boat. The impeller would be the first thing that could cause it
Flappers are installed pointing down. This allows water to pass easy and spring back in place if water tries to flow back toward the...