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Seized Flywheel? How to Use a Three-Legged Puller the Right Way | Practical Boat Owner
September 30, 2025 · 8 min · 2K views
What this video covers
Removing a seized engine flywheel requires a three-legged puller to apply even pressure across the component's mounting holes.▶ 0:46 First, remove the 17mm nut securing the flywheel to the tapered crankshaft.▶ 2:15 Select the appropriate bolts—in this instance, 6mm—to match the flywheel's threaded holes.▶ 1:55 Thread these bolts through the puller arms and into the flywheel, ensuring they are seated securely.▶ 3:06 Place the center screw of the puller against the end of the crankshaft to provide a stable pivot point.▶ 3:06 Gradually tighten the center screw to apply tension, using washers if necessary to prevent the bolts from bottoming out or damaging the threads.▶ 4:11 As tension increases, the flywheel will eventually break free from the tapered shaft with an audible pop.▶ 5:05 Always leave the securing nut partially threaded onto the shaft during the initial pull to prevent the flywheel from flying off suddenly once it releases.▶ 4:11
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