The following would be your engine parts guide to your serial number,
https://www.marineengine.com/parts/mercury_marine_parts/sn/00112909
Study item number 8,
https://www.marineengine.com/parts/mercury_marine_parts/sn/00112909/7004201PW/696_7
Have you had a chance to call boats.net to see if they can help better and/or call the post office too?
Where do you live?
Sometimes it takes extra time for things to move along on its own and sometimes one may have to give a call to help nudge it along some on certain things.
This website...
In the following photo image's it appears you are able to see the bushing too,
https://www.ebay.com/itm/155506732832?var=0&mkevt=1&mkcid=1&mkrid=711-53200-19255-0&campid=5338590836&toolid=10044&customid=443f7dab733c1630ea2e1b90285eb85b
https://www.mercruiserparts.com/bam/subassembly/31751/12840/20
The bushing ought to come out with a light tap and should it not for any reason then If you're already set up to change bushings out with current pressing equipment tools you may already own, then it appears you still ought to be able to change it out yourself < or you might have to go tool...
Most likely the following will be your key you need already cut and sent to your door, https://www.lostakey.net/index.php?main_page=advanced_search_result&keyword=061&search_in_description=1&categories_id=20...
Just helped someone in that area about a week ago,
https://forums.iboats.com/threads/trim-control-rubber-boot.772362/#post-5919420
Believe you'll be looking for Switch, trim part number 3856844... EBay seems to have a bunch running the number in their search area or a long order date from...
Probably why it’s harder to find…
Your model number is 7006201GB which again is hard to locate anything against it online.
That mentioned, I’m able to find a model number that is right next to it / yours in which will offer a parts catalog that should work for your model number too.
The other...
15 M (S = Short Shaft)
S/N range 684-062459 - 684-074082 =
1988
Model number 7015201NU ( MH)
https://www.marineengine.com/parts/mariner-outboard-parts/15c
Merc service manual part number 90-14679 / 386 8B covers (677)/W8 (677)/Marathon 8 (677) 9.9C (682)/15C (684) (I)...
Engine serial number is?
Possibly there’s an issue within the fuel pump cooling side of the system… Water blockage in-turn getting the fuel hot.
Without your engine serial number, here’s an example to start to compare notes, etc..
https://www.mercruiserparts.com/bam/subassembly/32557/11848/80
Your engine serial number shows it to be a 1985... Model number 7040525.
https://www.marineengine.com/parts/mariner-outboard-parts/40c-twin-carb/6e9400231-thru-6e9423162---el
With this situation about the best you can do is click on the report button under your post on the lower left side and leave a message so they can edit the post in question when the Administrator "checks in" most likely Monday or Tuesday would be a guesstimate for this site.