We have a 5hp Tohatsu 2 stroke on our 93 H-19. It starts easily, runs fine and pushes the boat right along, but the vibration is tremendous. At any speed above a fast idle the whole boat buzzes, and the boarding ladder rattles like mad. Is there a fix for this like a different type motor mount or just a different motor? I had a 9.9 4 stroke Honda on my previous H-23.5 and didn't have this problem.
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Motor Suspect
My 6HP Merc exhibits none of the vibration that you have experienced. Sounds like the rubber mounting pads in you motor have gone hard. I found the stock mounting position on my '93 H-19 to be too low, my motor hood hitting seat when tilted up. Hunter provided me with SS mounting brackets which I promptly modified. Motor now sits some 4 inches higher and 3 inches further aft.
My 6HP Merc exhibits none of the vibration that you have experienced. Sounds like the rubber mounting pads in you motor have gone hard. I found the stock mounting position on my '93 H-19 to be too low, my motor hood hitting seat when tilted up. Hunter provided me with SS mounting brackets which I promptly modified. Motor now sits some 4 inches higher and 3 inches further aft.
Pad the mount...
I've added rubber slabs cut from an old tire. Just slip them in place when mounting the outboard. We have a Honda 5HP 4 stroke which can vibrate a little too much. I think it is because it is a single cylinder. Anyway the rubber has quieted things down. Oh yeah, a band of tape around the side rail of the ladder where the clamp contacts helps too
I've added rubber slabs cut from an old tire. Just slip them in place when mounting the outboard. We have a Honda 5HP 4 stroke which can vibrate a little too much. I think it is because it is a single cylinder. Anyway the rubber has quieted things down. Oh yeah, a band of tape around the side rail of the ladder where the clamp contacts helps too
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