The Kawasaki FR691V is a 726 cc, air-cooled, vertical-shaft V-twin engine used in outdoor power equipment. Kawasaki Engines USA currently rates it at 23.0 hp at 3,600 rpm; Kawasaki Motors Europe lists 20.8 hp at the same speed in its specification sheet. Those figures come from different regional sources, so use the rating applicable to your engine and equipment rather than treating them as interchangeable.
Kawasaki FR691V specifications
Kawasaki describes the FR691V as a residential-use, four-cycle engine with two cylinders arranged in a 90-degree V. Its vertical-shaft configuration and equipment-specific mounting details matter when identifying a replacement engine or comparing it with another mower engine.
| Specification | Kawasaki Engines USA | Kawasaki Motors Europe |
|---|---|---|
| Displacement | 726 cc (44.3 cu in) | 726 cm³ |
| Configuration | Two-cylinder, 90-degree V-twin; four-cycle; vertical shaft; overhead valves; air-cooled | Two-cylinder V-twin; four-stroke; vertical shaft; OHV; air-cooled |
| Bore × stroke | 78 × 76 mm (3.1 × 3.0 in) | 78 × 76 mm |
| Compression ratio | 8.2:1 | not stated (Kawasaki Motors Europe specification sheet) |
| Maximum power | 23.0 hp (17.2 kW) at 3,600 rpm | 20.8 hp (15.5 kW) at 3,600 rpm |
| Maximum torque | 39.3 ft-lb (53.2 N·m) at 2,200 rpm | 39.1 ft-lb (53.0 N·m) at 2,000 rpm |
| Oil capacity | 2.2 US qt (2.1 L) with a new filter | 2.2 L |
| Dry weight | 88.2 lb (40.0 kg) | 40.0 kg |
| Dimensions | 18.85 × 18.18 × 22.24 in | 498 × 461 × 392 mm |
The figures are published in Kawasaki’s US FR691V product specifications and European FR691V specification sheet. The European sheet says its power rating is net power measured on a production engine in accordance with SAE J1349. It also notes that actual output varies with operating speed, application, environmental conditions, maintenance and other factors. Preserve the source and rated rpm when comparing horsepower or torque; the published regional figures are not one universal rating.
Design and equipment implications
The US product description lists overhead valves, pressurized lubrication, electronic spark ignition, automatic compression release, an internally vented carburetor with fuel shut-off solenoid, a rotating metal grass-chopper screen, cast-iron cylinder liners and a single-stage air filter. These features describe the engine, but they do not by themselves establish its maintenance schedule or the exact parts fitted to every mower application.
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#1 Best Overall
- 24hp Kawasaki 726cc OHV V-Twin Engine
- 1" x 3-5/32" shaft, tapped 7/16" with 1/4" keyway.
- Common replacement engine for consumer riding mowers and z-turns
- Please measure your old engine crankshaft, as Kawasaki makes 1 x 3-5/32, 1-1/8 x 3-5/32, 1-1/8 x 3.94, 1-1/8 x 4-5/16
Installation comparisons should include more than displacement or horsepower. Shaft configuration, dimensions, filtration, and the complete engine specification code can affect whether an engine or replacement component suits a particular machine. Kawasaki’s own comparison shows the FR691V with a single-stage air filter and lists the FS691V with dual-element filtration and different dimensions; matching family names or power figures alone is not enough to confirm equivalence.
Oil capacity and maintenance information
Kawasaki Engines USA lists an oil capacity of 2.2 US qt (2.1 L) with a new filter. Kawasaki Motors Europe lists 2.2 L. Capacity is not an oil-grade recommendation: the US product page does not state oil grade, fuel requirements, break-in procedure or service intervals.
Rank #2
- 【Complete Maintenance Kit】 This kit includes: 1 air filter, 1 pre-filter, 2 hose clamps, 1 oil filter, 2 spark plugs, 2-foot fuel line, and 1 fuel filter. It provides all-in-one solutions for the daily maintenance of the engine, saving you time and effort.
- 【Precise Replacement of OEM Number】 Air filter replacement: Kawasaki 11013-0726 / 11013-0752 / 11013-7047 / 11013-7049 / 99999-0384, J DMIU12555, Ariens / Gravely 21548000, Hustler 603059, Bobcat 4164631, etc.; Oil filter replacement: Kawasaki 49065-0721 / 49065-2076 / 49065-2077 / 49065-7002 / 49065-7007, JD AM119567 / AM125424, etc.
- 【Wide Compatibility for Engines & Vehicle Models】 Engine: Compatible with 4-stroke engines such as Kawasaki FR651V / FR691V / FR730V / FS481V / FS541V / FS600V / FS651V / FS691V / FS730V; Lawn Mower: Compatible with various riding and zero-turn lawn mowers from brands like JD X300 / X500 / ZTrak series, Toro TimeCutter SS5000 / SS5060 / MX5060, Hustler FasTrak / Raptor series (zero-turn from 42" to 60"), Cub Cadet, Bobcat, Exmark, Gravely, etc.
- 【Upgraded Materials & Easy Installation】 The air filter is equipped with a reinforced design using metal mesh, which is more durable and can effectively prevent dust and debris from entering the engine. It can be directly replaced without the need for modification, and the installation is simple and quick.
- 【Professional After-sales Guarantee】 We offer a complete set of high-quality maintenance kits, strictly controlling the quality to ensure smooth engine operation. If you have any installation or usage issues, please feel free to contact us at any time. We provide 24-hour online technical guidance and friendly customer service to help you maintain your equipment with peace of mind.
For those instructions, consult the owner’s manual for the engine and the manual for the mower or other equipment it powers. Kawasaki’s technical-download page lists the owner manual titled OM FR651-691-730V, along with service data and a four-stroke troubleshooting guide: Kawasaki technical downloads. Follow the documentation applicable to your exact engine and equipment rather than assuming every FR691V installation has identical service requirements.
Finding the right FR691V parts
Kawasaki Europe lists multiple FR691V parts catalogs for different specification codes and instructs users to select the correct specification. The model name alone may not identify the right component. Before ordering, match the complete engine code and confirm the mower or equipment application in its manufacturer’s parts information.
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- Engine Compatibility: FR691V FR730V tune up kit designed for Kawasaki FR651V FR691V FR730V FS481V FS541V FS600V FS651V FS691V FS730V 4 stroke engines
- Replace Part Numbers: Air Filter replaces Kawasaki 11013-0752 11013-7049 11013-0726 11013-7047 99999-0384 11013-7043, John D MIU12555, BobCat 4164631, Gravely 21548000; Oil Filter replaces Kawasaki 49065-0721, 49065-2076, 49065-7002; John D AM125424
- Wide Equipment Compatibility: 11013-0752 air filter maintenance kit fits Kawasaki FR FS series engines; fits John D X300 X500 ZTrak series, and also fits Cub Cadet, Husqvarna, BobCat, Exmark, Gravely, Hustler FasTrak Raptor 42" 48" 52" 54" 60" zero turn mower tractor
- Reliable Performance: Durable rubber seals and pleated filter media help capture dust and debris, supporting clean airflow, smooth operation and reliable engine performance
- Easy Maintenance: Includes 1 air filter, 1 pre-cleaner, 1 oil filter, 1 fuel filter and 2 spark plugs for convenient installation and routine maintenance
- Air filter: The US product page identifies a single-stage air filter. Use the matching catalog for the complete engine specification and application; no universal replacement part number is established here.
- Other maintenance parts: Kawasaki’s genuine-parts navigation includes oil filters, fuel filters, oil drain hoses, tune-up kits, engine oils, fuel and fuel treatment. Confirm each item against the correct catalog entry rather than relying on the FR691V name alone.
- Parts diagrams and manuals: Start at Kawasaki’s technical-download page and select the catalog for the engine’s specification code. Check the equipment maker’s parts information as well when the engine is installed in a mower or other machine.
How to compare the FR691V with another engine
For a useful comparison, line up the same kinds of information and keep each rating’s basis attached to its number:
- Displacement, cylinder count and layout.
- Rated power and torque, including rated rpm, source region and stated test method.
- Lubrication and air-filtration design.
- Dimensions and shaft configuration for the equipment installation.
- Parts and documentation availability for the exact engine specification code.
A horsepower comparison by itself can conceal meaningful differences in filtration or fit. Kawasaki’s FR-series product information is a starting point for its listed comparisons; verify dimensions and fitment against the equipment maker’s information before treating two engines as interchangeable.
Quick Recap
Rank #4
- Upgraded Element: Metal mesh surrounded design, replace for Kawasaki OEM # 11013-7047 11013-7049 11013-0726 11013-0752 99999-0384 KM-11013-7047 KM-11013-0752 air filter, fit Kawasaki FR FS series engines lawn mower tractor air filter.
- Mower Parts: Sturdy air filter with pre cleaner, easy to clean, prolong working life. Also replace for model Hustler 603059, Gravely 21548000, John Deere MIU12554 MIU12555, Bobcat 4164631, Stens 102-442, MTD 490-200-M022 air filter.
- Perfect Fit: 6-5/8" L x 2-3/4" W x 3" H, the same size as OEM, easy to install. Air filter for Cub Cadet, Husqvarna, Toro TimeCutter, Bobcat, Exmark, Ariens, Hustler Raptor FasTrak TrimStar series 42" 48" 52" 54" 60" zero turn mower.
- High Quality: Air filter with pre cleaner provide double protection, metal mesh prolong element life. Well made and good seal air filter allows a constant supply of fresh air, and effectively prevent damaging against dust and dirt.
- What You Get: Emmawin 2 Pack 11013-0726 air filter (metal mesh surrounded), 2 Pack 11013-7046 pre cleaner, 24-hour online guidance, and friendly customer service.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
