Lawnboy 522R Snow Blower Category
Original Model: Tecumseh HSSK50-67259S
This has a 3/4" x 2-5/16" shaft. The newer Overhead valve style engines are about 2" wider than the HSSK50 engine toward the right side as you are facing the crankshaft. Due to this width difference on that side of the engine, it will sometimes interfere with the chute control rod especially if your control chute rod is high and close to the engine. The control chute rod is high on this snow blower and may have to be dropped down to clear the wider engine. If you can adjust your chute control rod, then one of the ohv engines listed here should work for you.
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While we may have sold many engines listed above to be used for a Lawnboy 522R Snow Blower Category, we are NOT claiming these are exact replacements unless the product notes explicitly say so. Many original equipment engines may no longer be in production because of obsolescence or EPA regulations, so in some cases there may not be an exact replacement available. Our intention here is to show that other customers have utilized these in the equipment shown, but may have had to make some modifications to do so. If we know of any required changes, we will list those, however, some adapting during installation should be expected.