John Deere 425 Engine Specs

Engine Model

• Kawasaki created the engine for the 425 tractor, and the model number is FD620D. It runs on gasoline and uses natural aspiration, and it has six cylinders.

Engine Specs

• The John Deere 425 engine bore is 2.992 inches, and the engine stroke is 2.68 inches. The engine bore is the diameter of the engine's pistons, and the stroke is the total length that the pistons can travel within the cylinder. This engine produces up to 20 horsepower, and it has a compression ratio of 9 to 1. It has a liquid cooling system, and the coolant tank holds up to 3 qt. It has an electric starter, and it needs at least 12 volts and 1.1 horsepower to start. The engine displacement is 35.7 cubic inches, which refers to the total volume that the pistons can move through the cylinders in a single action.

Power and Additional Specs

• The engine's rated rpm is 3,550, which is the power needed to move the tractor at a fixed speed. It produces between 1,450 and 3,550 rpm when idling. The oil tank can hold up to 1.6 qt. The engine air cleaner is made of paper. The tractor weighs between 805 and 900 lbs., and its dimensions are 75 inches long by 45 inches wide. It uses 16-inch by 7.50- to 8-inch diameter tires on the front and 23-inch by 10.50- to 12-inch diameter tires on the rear. This is a 4-by-2 two-wheel drive tractor, but you can purchase it with four-wheel steering if you ask for that optional feature. The cab is open, but it does have a cage to protect you from flying debris. The tractor uses wet disc brakes, and it has a hydraulic power take-off system.