FR691V-DS18S - Engine VTwin 23HP

STD 1.125X100MM PTO 

New Kawasaki FR691V 23 HP V-Twin Engine | Spec FR691V-DS18S

Repower your commercial or residential zero-turn mower with a brand new, genuine Kawasaki FR691V 23 HP engine. Renowned for its smooth power delivery and legendary reliability, this 726cc vertical-shaft V-Twin is a commercial-grade workhorse designed to handle heavy cutting seasons with ease.

This specific factory build (Spec DS18S) features a standard 1.125" (1-1/8") diameter x 100mm (approx. 3-15/32") length vertical PTO crankshaft, making it a drop-in replacement for dozens of premium zero-turn mowers.

⚙️ Full Mechanical Specifications:

• Model/Spec Number: FR691V-DS18S (Directly replaces older sub-specs like AS18, BS18, CS18)

• Power Output: 23 Gross HP / 726cc Displacement

• Crankshaft Type: Vertical PTO Shaft

• Crankshaft Dimensions: 1.125" (1-1/8") Diameter x 100mm Length (with standard keyway)

• Starter: 12V Bendix-Drive Electric Start

• Charging System: Heavy-Duty Alternator / Regulator included

• Lubrication: Full Pressure Lubrication with spin-on oil filter

• Cooling: High-volume cooling fan with integrated top rotating grass screen

🚜 Verified Equipment Applications:

This exact 1.125" x 100mm PTO configuration is widely used across premium lawn care brands, including:

• Ariens / Gravely (Zero-Turn series)

• Toro TimeCutter & Titan series

• Hustler Turf mowers

• Scag, John Deere, and Wright equipment matching this specific 1-1/8" shaft footprint.

⚠️ Critical Buyer Checklists (Read Before Buying!)

1. Measure Your Crankshaft: Please verify your old engine's PTO shaft diameter before ordering. This engine features a 1.125" (1-1/8 inch) shaft. If your original engine uses a smaller 1" diameter shaft, your mower pulley clutch will not slide onto this engine.

2. Muffler Assembly: Brand new Kawasaki replacement engines do NOT include a muffler assembly from the factory. You will simply swap over your mower's existing exhaust manifold/muffler onto this new block using fresh gaskets.

3. Shipping Regulations: Due to local environmental and state emission rules, this gasoline engine cannot be shipped to California addresses.

📦 What is Inside the Factory Box?

• 1x Brand New, Unused Kawasaki FR691V-DS18S Engine

• 1x Official Kawasaki Owner’s / Service Manual

• Comes fully enclosed in original heavy-duty factory crating.

🚀 Premium Shipping & Safe Handling

• Secure Freight / Heavy Crate Packaging: This engine is packed securely inside thick factory reinforced structural cardboard and wood-reinforced framing to protect the crankshaft and aluminum casings during transit.

• Fast Tracking & Dispatch: We understand your machine is your livelihood. We dispatch units quickly so you can get back to cutting turf!

Still unsure if this is the exact match for your zero-turn model? Send us a direct message with your mower's model number and a photo of your old engine's barcode decal. We will gladly cross-reference the database for you!