Links to products I have in my tool bag.
Air filter. https://amzn.to/2SGOmyU
Compression tester. https://amzn.to/2NMgeze
Spark PLUG TESTER. https://amzn.to/3jEcZH3
Inline Spark Checker. https://amzn.to/3bnXjmA
Feeler Gauge set. https://amzn.to/3rTsZK6
Chemical bottle. https://amzn.to/3eWcGVs

Above are affiliate links which means we receive a percentage of the revenue made from purchasing products via those links.

There's a reason they made this simple little mowers and you may not realize just important they are.