Ariens 1540 Mower, Lawn and Garden Tractor Category
Original Model: Briggs 15hp 28P777-0644 or 28n777
This unit has an electric cluth and a fuel pump. This engine normally has an angle bracket on the oil filter that makes it point toward the spark plug end of the engine. If an engine with an oil filter that comes straight out of the block with no angle bracket on it, it will fit in your tractor and the 31M977-0111 engine should work for you. If you do not have room then you could use an engine without an oil filter. You will have to use your fuel pump and purchase a new dip stick tube as this engine pulls its vacuum from the dip stick tube instead of the side of the block like your engine. Briggs part number 697085.
Parts List
3 ProductsDipstick
Engines
33S877-0001
19hp Briggs & Stratton EX1900 Series Engine, Vertical 1"x3-5/32" Shaft, Electric Start, 9 Amp Alternator, Fuel Pump, ReadyStart
33S877-0043
19hp Briggs & Stratton EX1900 Series Engine, Vertical 1"x3-5/32" Shaft, Electric Start, 9 Amp Alternator, Fuel Pump, Choke-a-Matic (replaces 33S877-0019)
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General Disclaimer
While we may have sold many engines listed above to be used for a Ariens 1540 Mower, Lawn and Garden Tractor 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.