Yamaha Engine

[Julian Porter]

The Yamaha 4, 5 and 6 HP are the same engines (139cc, 1cyl, 4 stroke). I suppose they make different power-ratings by different carburetors.

I spoke to the dealer about this. He said they just had different jets and that you could modify a 5hp to give higher power but it would invalidate any warranty.

[Nick Martin]

I had a Yamaha 6HP 2cylinder with coil and saildrive prop .. a bit heavy and had to mod boat very slightly to get in .. but a FANTASTIC bit of kit .. very economical .. beautiful engineering .. don't skimp on power if going to sea! .. definitely get the right prop too