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1981 140 johnson

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lizzy5429

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Can I add anything to my lower

Can I add anything to my lower unit to prevent cavitation on my 24' pontoon with a 1981 Johnson 140 hp motor? My prop is 13x19
 
"It seems to be a rather heavy

"It seems to be a rather heavy prop for this 'boat'. Normal problem when theese boats are 'dirty' pontoons, or if alu, dented pontoons!"
 
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