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Prior to owning the OMC Universal Puller, I had a Harbor Freight harmonic balancer puller. The puller did not come with the 1/4-20 bolts that are needed for the smaller OMC motors. Had to buy the bolts and washers.
Besides the depth of embedment, it’s also very important that the bolts are embedded to the exact same depth. crosbyman has a good idea with the nylon stops to achieve this. It’s easy to strip threads on a stubborn flywheel when the bolts are not even.
The OMC puller has some awesome shoulder screws that when installed properly keep the puller exactly even. The measurement from end of screw to the shoulder is 13/32″ which would be a good dimension to set your stoppers at.
Fleetwin brings up a good point about the quality of the tool. Larger motors have more torque on the flywheel and therefore put more stress on the puller/bolts. I would assume that the H.F. puller is made from pot metal. The OMC tool is very well made.
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