I bought a spare prop for my 1983 Suzuki 5 HP two stroke twin. On the old prop it is marked. F610 200x170 I ordered a prop from Browns Point Marine because they showed props in stock under the F610 part number for 1983 5 HP Suzuki's. When the new prop came in it is marked; F610 200x190 I have poured over the parts book for this engine and the web site for Browns and can not seem to find the specs for the 200x170 prop but I know something must be different. Anybody know what the markings mean?