Re: key parts of the magneto to replace on a 1954 evinrude fleetwin 7.5
Coils are about $20 each, Impellers are usually $10-$15, Tune up kits are usually about $20, gear lube is usually about $7 a qt., carb kits are usually about $20-$25 too. You can usually replace all of the consumable parts on these old gems for under $100. iboats has virtually everything dating back to about 1955 for most models, but yours is a 54 so it may be on the cusp. Check aomci.org per the previous post for more info, but I'm sure someone will come along with one of these that can help you with some of the specifics.