Starter issue and leaky primer solenoid

[tsubaki]

With cables that size, I usually get a propane torch, flux and solder to do the job.
Clamp or vise the eyelet in the vertical position. Flux coat the cable and place into the eyelet, heat the eyelet with the torch forcing in the solder till it runs out the top.
Usually you'll need to file the eyelet to remove excess solder that ran out.