Grasshopper 621 Mower, Front Mount Deck Category
Original Model: Briggs Vanguard 303447-0454
You may have to change minor parts from your original engine to make this work the same as your current engine. You will need to use the drive adapter and muffler off of your original engine. You may have to use the oil filter bracket as well and the wiring may be slightly different. If you drive off the flywheel side of the engine and your engine uses a Booster Fan, you can use any of the engines listed but you will have to use your flywheel, shroud, and starter or starter gear from your old engine. You will need to match up your starter to the correct flywheel, eg: aluminum gear on your flywheel to nylon gear on starter or steel gear on starter to steel gear on flywheel. The 356447 series engine is about 1-3/8" wider than the 303447 or 350447 series. 16hp Vanguards have an all cast flywheel with the fan as a part of the flywheel. The 18hp and up Vanguards have a cast flywheel with a plastic fan that bolts to the flywheel.
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While we may have sold many engines listed above to be used for a Grasshopper 621 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.