It should work fine, we had a two blade and this is what the prop shop gave us, like i said i dont recall if it was the backup for the 6 or 4hp motor, call the prop shop, I think my bro would liet it go for $20.00,

it will at least get ya back on the water,

Bud 425-821-9511
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''Should have been here yesterday, It was like the old days"