Gravely PRO300 Mower, Commercial Walk Behind Category
Original Model: Briggs Vanguard 303777-1142
One of the engines that has been used is a Briggs Vanguard 303777-1142 and another is the Kohler Magnum MV20S-57513 which had a 1-1/8" x 3-5/32" Shaft. You cannot interchange these two engines.
Parts List
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General Disclaimer
While we may have sold many engines listed above to be used for a Gravely PRO300 Mower, Commercial Walk Behind 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.