The spark plug might be defective. To determine if the spark plug is defective, remove the spark plug and inspect. Webthe recoil starter assembly engages the crankshaft to turn over the engine. If the recoil starter assembly is defective, the engine won’t turn over and the chainsaw won't start. Webjan 23, 2023 · in this article, we’ll present all the reasons why a poulan chainsaw won’t start, along with how to resolve each issue! Why won’t my poulan.