This motor type left the factory with different paint colors and decals.----Was sold with different names on the decals.----Do not limit your search to one brand of motor.----Try googling the part # for the coil.
The pump you want is the 438557.-----I do not use the cheapo Chinese ones.----But your choice.----They were mounted with a bracket.----But you can hold it in place with a ty-wrap.-----Remove the pulse limiter and install a simple barb fitting.----your location ?
Coils would have nothing to do with blowing the fuse !--Remove small red wire from sonenoid.------Use a jumper wire from the solenoid and run 12 volts to the battery terminal on ignition switch.----Test again.
Post compression test values here first.-----These motors are really well built.----You may just need to reseal lower unit.----Carburetor kit.----New coils if it still has original.------Inspect first ?-----Lots of parts available new and used.
Is this a 56 model / 66 model an 86 model or 96 model ??----On 74 to 92 models at the back / underneath of the lower cowling there is a latch.-----Release it and the cowling might fall off.
The melted " sponge thingy " is the switch that sounds the horn on overheat.-----But then there are thousands of these motors out there that have never had the horn tested.