What year is muy Johnson Seahorse

[Johndog]

I have a 9.9 Johnson Seahorse model # 10r77a ser # C48740. Does anybody know what year this is?

 

[Xcusme]

Re: What year is muy Johnson Seahorse

Yup, it's a 1977 9.9hp Johnson 50:1 fuel mix

 

[TN-25]

Re: What year is muy Johnson Seahorse

Welcome to i-boats, Johndog!

1977 marked a return to all white motors at Johnson. Previous white Johnsons were 1959 - 1966 models.

Your 9.9 marks the first year of CD ignition. The advantage is a hotter spark, which is a big plus. The drawback is more expensive parts.