My 82 300d blows a fuse like that, but only when the fan speed is set on the variable speed. I just run it on low or high and no problem.

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82 300d 194
75 240d sold
Gulfstar 41 4-107 Perkins Westerbeke 4.4 Gen
Puegot Bicycle Legs
AYP Lawn Tractor Briggs 12.5