I have found a person with an H14 & H15 for sale. He said that the H14 & H15 have interchangable parts, just the engines are different HP. I have heard of H16 & H14 being the same, but I have not hears that H15 is the same? Will H15 parts fit an H14??
Do you mean a 1556 (H15)? This a little older than the H14/16. Different color scheme and such. The 1556 is a 1972 and came after the 1257 (1970) and before the H14/16. The 1256 and 1556 were available in 1972 as hydro models. I am pretty sure alot of the parts are gonna be the same on the H14 and 1556.