Chainsaw won't start

Links to products I have in my tool bag. Compression tester. https://amzn.to/2NMgeze Spark Checker. https://amzn.to/3bnXjmA Tygon Fuel Line. https://amzn.to/3aCGntm Carburetor Adjustment tools. https://amzn.to/3k7cgxe Primer Bulb. https://amzn.to/3bwLLxj Fuel Filter. https://amzn.to/2ZC0T7i Chemical squirt 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. Thanks for watching. This chainsaw has spark, fuel and compression but it still won't start and the reason is kind of strange.