18/03/2020
When it comes to reliable, compact power, the Kawasaki FE350 engine stands out as a true workhorse. Manufactured by Kawasaki Heavy Industries Ltd., this small gasoline engine has earned a reputation for its durability and consistent performance across a variety of general-purpose applications. While you might not find it under the bonnet of your family saloon, the FE350 is a common sight in machinery where dependable, air-cooled power is paramount, particularly within the realm of golf carts and other utility vehicles.
This comprehensive guide will delve into the specifics of the Kawasaki FE350, exploring its design, performance characteristics, and crucial maintenance details. Whether you're a seasoned mechanic, a golf cart owner, or simply curious about small engines, understanding the FE350's intricacies will provide valuable insight into this robust piece of engineering.
What Exactly is the Kawasaki FE350 Engine?
At its core, the Kawasaki FE350 is a 0.35 litre (351 cc, 21.42 cu-in) single-cylinder, air-cooled, 4-stroke internal combustion engine. Designed with a horizontal shaft, it's built for versatility, making it suitable for a wide array of equipment where a compact, yet powerful, engine is required. The 'FE' designation typically refers to Kawasaki's general-purpose industrial engines, known for their reliability and ease of maintenance.
The engine's design incorporates several features that contribute to its longevity and smooth operation. For instance, its OHV (overhead valve) configuration is a key aspect, promoting efficient combustion and better power output for its size. This design allows for a more compact cylinder head and improved airflow, which translates to better fuel economy and reduced emissions compared to older side-valve designs.
Key Design and Feature Highlights
The engineering behind the FE350 is geared towards durability and user convenience. It boasts a robust cast iron cylinder liner, which significantly extends the engine's lifespan by providing excellent wear resistance. To mitigate vibrations inherent in single-cylinder engines, Kawasaki incorporated a reciprocating balancer, ensuring smoother operation and a more comfortable experience for the equipment operator. This attention to detail in vibration reduction is crucial for applications like golf carts, where user comfort is a priority.
Fuel delivery is handled by a float-type carburettor with a fixed main jet, a simple yet effective system that provides consistent fuel-air mixture. Ignition is managed by a reliable flywheel magneto transistor type system, ensuring strong, consistent spark for easy starting and efficient combustion. The engine also features a mechanical governor, which automatically adjusts engine speed to maintain a constant RPM under varying loads, a vital characteristic for steady performance in applications like generators or pumps.
Starting the FE350 is typically straightforward thanks to its recoil starter, which includes an automatic compression release for easier pull starts. For added convenience, an electric starter was available as an option, providing a push-button start capability. Lubrication is a critical aspect of engine health, and the FE350 employs a full-pressure lubrication system, complete with a spin-on oil filter to keep the oil clean and ensure all vital components are adequately lubricated. A low oil shut-off system provides an extra layer of protection, preventing engine damage if oil levels drop too low.
Air filtration is managed by either a dual-element air cleaner or an optional oil bath type air cleaner, both designed to protect the engine from dust and debris, especially in demanding environments. Perhaps one of the most user-friendly features of the FE350 is its hydraulic lash adjuster. This innovative component eliminates the need for periodic valve adjustments, significantly reducing maintenance requirements and ensuring optimal valve timing throughout the engine's life. This truly makes the FE350 a low-maintenance choice for many.
Performance Specifications
Despite its compact size, the Kawasaki FE350 delivers impressive performance figures for its class. Its bore and stroke dimensions are 83.0 mm (3.27 in) and 65.0 mm (2.56 in) respectively, contributing to its 351 cc displacement. With a compression ratio rating of 8.4:1, the engine is designed for efficient power generation using readily available unleaded gasoline.
The FE350 motor is rated to produce a maximum horsepower of 11.7 PS (8.6 kW; 11.5 HP) at 3,600 rpm. Its maximum torque output is 23.5 Nm (2.4 kg·m; 17.34 ft·lb) at a lower 2,800 rpm, indicating good pulling power at moderate engine speeds. The FE350G variant, with its 1/2 cam gear reduction, offers different power take-off characteristics, often suited for applications requiring higher torque at lower RPMs.
General Engine Specifications (FE350D / FE350G)
| Characteristic | Specification |
|---|---|
| Engine Type | 4-stroke, OHV, single cylinder |
| Displacement | 351 cm3 (21.4 cu-in) |
| Max. Horsepower | 11.7 PS (8.6 KW; 11.5 HP) at 3,600 rpm |
| Max. Torque (crank PTO) | 23.5 Nm (2.4 kg·m; 17.34 ft·lb) at 2,800 rpm |
| Carburettor | Float type with fixed main jet |
| Cooling System | Forced-air |
| Ignition System | Flywheel magneto transistor type |
| Lubricating System | Pressurised lubrication with oil filter |
| Starting System | Recoil or electric starter |
| Stopping System | Ignition primary circuit ground |
| Fuel Used | Unleaded gasoline (octane number 86 or higher) |
| Fuel Tank Capacity | 6.4 L (6.8 US qt) |
| Fuel Consumption | 240 g/HPh |
| PTO Shaft Rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
The compact nature of the FE350 makes it ideal for integration into various equipment designs. Its physical dimensions and relatively low weight contribute to its versatility and ease of installation.
| Dimension | Kawasaki FE350 D/G |
|---|---|
| Length | 378 mm (14.9 in) |
| Width | 422 mm (16.6 in) |
| Height | 454 mm (17.9 in) |
| Dry Weight | 34.4 kg (75.8 lbs) |
Common Applications: The FE350 in Golf Carts
One of the most prominent applications for the Kawasaki FE350 engine is in golf carts, particularly those manufactured by Club Car. Models such as the Club Car DS and Precedent, produced between 1996 and 2006, frequently featured the FE350 engine. Its robust design, reliable performance, and relatively low maintenance requirements made it an excellent choice for the demanding stop-and-go nature of golf course operations, as well as general utility tasks on various properties.
For owners of these golf carts, the FE350 engine provides ample power for carrying passengers and equipment, navigating varied terrains, and enduring long hours of operation. Its integration into Club Car vehicles speaks volumes about its dependability and suitability for recreational and light-duty commercial use.
Maintenance Essentials: Keeping Your FE350 Running Smoothly
Proper maintenance is crucial for extending the life and ensuring the continued reliability of any engine, and the Kawasaki FE350 is no exception. While its design incorporates features like hydraulic lash adjusters to reduce some maintenance tasks, regular checks and adherence to service guidelines are still vital.
Service Information
Monitoring key operational parameters can help diagnose potential issues before they become major problems. The engine's maximum speed is rated at 4,000 ± 100 rpm, with an idle speed of 1,300 ± 150 rpm. Cylinder compression should ideally be between 3.0-4.0 kg/cm2 (42-57 psi) at 600 rpm. Consistent compression is an indicator of healthy piston rings and valves.
Oil System
The lifeblood of your FE350 is its engine oil. It’s essential to use the correct type and maintain adequate levels. Kawasaki recommends a 4-stroke engine oil or an equivalent, meeting SF, SG, SH, or SJ classifications. Specifically, SAE 10W-30 is the recommended viscosity for general use. The oil capacity is 1.3 litres (1.4 US qt), and it’s important not to overfill or underfill the crankcase. Regular oil changes, along with filter replacement, are paramount for preventing premature wear and maintaining engine efficiency.
Ignition System
A healthy ignition system ensures reliable starting and efficient combustion. For the spark plug, an NGK: BP5ES is specified. The spark plug gap should be set between 0.7-0.8 mm (0.028-0.031 in) to ensure a strong, consistent spark. Additionally, the ignition coil air gap should be checked and maintained at 0.3 mm (0.012 in). These small adjustments play a significant role in the engine's overall performance and fuel efficiency.
Tightening Torque Specifications
When performing any engine work that involves loosening or tightening fasteners, adhering to the correct torque specifications is critical. Over-tightening can strip threads or damage components, while under-tightening can lead to leaks or parts coming loose during operation. Always use a calibrated torque wrench for these tasks.
| Component | Torque Specification |
|---|---|
| Connecting rod bolt | 23 Nm; 2.3 kg·m; 17 ft·lb |
| Cylinder head bolt | 25 Nm; 2.5 kg·m; 17 ft·lb |
| Flywheel nut | 137 Nm; 14.0 kg·m; 101 ft·lb |
| Crankcase cover | 31 Nm; 3.2 kg·m; 23 ft·lb |
| Oil drain plug | 32 Nm; 3.3 kg·m; 24 ft·lb |
| Spark plug | 23 Nm; 2.3 kg·m; 17 ft·lb |
Fuel System Considerations
The Kawasaki FE350 is designed to run on unleaded gasoline with an octane number of 86 or higher. While the engine's fuel system is relatively straightforward, comprising a float-type carburettor, questions often arise regarding compatible fuel pumps, especially for golf cart applications. It's important to note that specific fuel pump compatibility can vary greatly depending on the exact model of the golf cart and any modifications it may have. Universal recommendations are difficult to provide without specific product details. For compatible fuel pumps, it is always best practice to consult the golf cart's service manual or check product listings from reputable suppliers, as options may differ based on the year and specific configuration of your Club Car FE350 model.
Rebuilding Your FE350 Engine
For engines that have seen extensive use, or those requiring significant repairs, rebuilding is a viable option to restore performance. Rebuild kits are readily available for the Kawasaki FE350, particularly for its common applications in Club Car DS and Precedent golf carts. These kits typically include essential components such as pistons and ring sets, intake and exhaust valves, springs, various gaskets, and oil seals. Performing a rebuild can significantly extend the operational life of the engine, often bringing it back to, or even exceeding, its original performance specifications. When undertaking such a task, always ensure you use high-quality replacement parts and adhere strictly to the manufacturer's service manual for proper assembly and torque specifications.
Frequently Asked Questions (FAQs)
What type of fuel does the Kawasaki FE350 use?
The Kawasaki FE350 engine is designed to run on unleaded gasoline with an octane number of 86 or higher.
Does the FE350 require valve adjustments?
No, the Kawasaki FE350 engine features hydraulic lash adjusters, which automatically maintain the correct valve clearance, making manual valve adjustments unnecessary.
What is the oil capacity of the Kawasaki FE350?
The oil capacity for the Kawasaki FE350 engine is 1.3 litres (1.4 US qt).
What kind of golf carts use the Kawasaki FE350 engine?
The Kawasaki FE350 engine was commonly used in Club Car golf cart models, particularly the DS and Precedent, from around 1996 to 2006.
How often should I change the oil in my FE350?
While specific intervals can vary based on usage and operating conditions, a general recommendation for small engines like the FE350 is to change the oil every 50-100 operating hours or at least once a year, whichever comes first. Always refer to your equipment's specific owner's manual for precise maintenance schedules.
Conclusion
The Kawasaki FE350 engine is a testament to robust small engine design, offering dependable power and a relatively low-maintenance profile thanks to features like its hydraulic lash adjuster. Its widespread adoption in applications such as Club Car golf carts underscores its reliability and suitability for general-purpose tasks. By understanding its specifications, key features, and adhering to recommended maintenance practices, owners can ensure their FE350 continues to provide years of reliable service. Whether for recreational use or light commercial duties, this air-cooled single-cylinder engine remains a solid choice in the small engine market.
If you want to read more articles similar to Kawasaki FE350: Unveiling This Robust Small Engine, you can visit the Engines category.