Yamaha F4A problem.

[Fish Magnet]

Hi Folks,
I recently purchased a secondhand boat, part of the deal was a Yamaha F4A [4stroke 4 hp] auxillary outboard [prev owner said it was ran twice] Today I started the engine , with the water intake in a barrell of water, but there was no tell tale flow of water from the water outflow. I stopped the engine to prevent overheating, then I checked the water intake it was clear, so I guess that the impeller has become coated in salt and siezed, could somebody please tell me where in the outboard can find the impeller housing, so I can inspect the impeller?
All replies greatly appreciated.

Fish Magnet

[ChrisP]

The water pump is on top of the gearbox. You have to split the gearbox away from the upper leg. The impeller is in a housing around the drive shaft. It may have become set and inflexible with so little use.

[Fish Magnet]

Thanks Chris P, will try and get at the pump tomorrow.