Today here is another picture of this ski.
Fuel pump assy from fuel tank.
Fuel pump strainer sitting on bottom of fuel pump.
After dry of strainer, very dirty.
After clean of strainer, much better now.
This is top view of fuel tank after drain all fuel but still black color water stain sitting on bottom of tank. 
This water stain was cause of fuel pump strainer change to dirty. Suck all water stain and cleaned tank inside.After clean and put back together all parts, finally this ski engine start and keep run.
