I am looking for ideas of who can help repair my outboard engine. The bolt hole where the throttle arm linkage connects to the cast frame is "augured" out from use, creating a ton of slop in the linkage and making it so the linkage gears slip out of place frequently. I have looked for larger bolts that might help fill the gap, but nothing that would fit the other parameters of the tight space. Another idea I had was to find a sleeve of some kind to put around the bolt to take up the extra space, but no luck on that either yet. My thought right now is to have the hole "welded" shut completely and then re-drilled out to the correct diameter for the existing bolt, but not sure who is capable of welding that kind of cast frame. The outboard is a late 70's vintage Evinrude 15hp.
The arrow in the attached photo is pointing to the location of where the hole mentioned above is located.
Any idea/help would be appreciated.