Cleaning/replacing spa jets in attached spa

[viksis]

I ordered a Pool Tool 138 Pooltool Spa Clogged Jet Cleaner as I believe I have one or more clogged jets in my attached spa (no blower). I can't find any instructions or videos on how this is done. I know the jets are deep inside the wall. Is it difficult to get the end of the tool to the jet?
Yes, I am a newbie.

 

[kadavis]

Drain the spa into the pool to just below the jets or top of seat then you can look into jets to see the nozzles. Then put valves back to spa and run, use the tool to unblock any jet not working. If this doesn't work you may have to remove the nozzles next

 

[viksis]

Thank you!