Engine not primed -- pump primer system 8.
Pontoon motor won't go down. When smoke is emitting from the exhaust or from anywhere it is likely to cause. Carburetor adjustments too lean not allowing enough fuel to start engine 9. After this the depreciation tends to level off and the boats depreciate in a similar manner to most other boats.
Trim the engine as you approach so it reduces draft and just starts gasping for air then drop it back down a couple of inches. The PCB on the rear of the motor is the positioning encoder. If then everything goes back to normal you will know for sure its the float and maybe needle.
Tell me a bit more about whats going on so the Marine Mechanic can help you best. One problem that can arise with your engine is that it can overheat. Retry if it fails.
Compress moving internal portion of valve 14. Typical pontoon boats seem to go down in value quickly. Next hook up the ground clamp to any ground that is visible on the engine.
If you get to the ramp and the motor is halfway up but wont go either way when you press the trim switch you might have a corrosion build-up issue. This is done by using a load tester to check the battery and battery cable status. My pontoon was the opposite.
Both my buddy and I had to plant our fat butts in the back of the boat to keep the prop in the water while we gimped back to the landing. It tells the unit where to start and stop and is not going to the the reason for the fault. As always recommended put a cheap plastic inline fuel filter BETWEEN the fuel pump and carb.