Grasshopper 720 Onan Mower, Front Mount Deck Category

Original Model: Onan Horizontal shaft

1.125" x 2.5" crankshaft. The origial Onan engine is no longer available. Our Briggs conversion kit engine works nicely in this unit.

Parts List

1 Products



23hp OHV V-Twin with kit to fit into a Grass Hopper 720 with Onan Engine Briggs & Stratton Engine


In Stock:2

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General Disclaimer

While we may have sold many engines listed above to be used for a Grasshopper 720 Onan Mower, Front Mount Deck 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.