4 stroke motorcycle

Types of 4-stroke motorcycles

Many 4-stroke motorcycles have become a common sight on roads worldwide, loved for their fuel efficiency and lower emissions. These bikes use a four-stroke internal combustion engine that goes through four distinct strokes or movements of the piston to complete one cycle. Below are some popular types of 4-stroke motorcycles:

• Standard or Naked Bikes

  Standard or naked motorcycles are the first kinds of 4-stroke motorcycles. Their design is simple, with an upright riding position and no windscreen or fairings. They are suitable for city commuting and everyday rides. Their engines range from small to large displacements, offering different power levels. Examples include the Honda CB series and the Yamaha MT series.

• Sport Bikes

  Sport bikes are the second type of 4-stroke motorcycles. They have a sleek and aerodynamic design, a full fairing, and a more aggressive riding position. Sport bikes are built for speed and performance, making them ideal for racing and high-speed rides. They usually have high-revving engines. Examples include the Kawasaki Ninja, Suzuki GSX-R, and Yamaha YZF-R series.

• Touring Bikes

  The third type of 4-stroke motorcycles is touring bikes. They are designed for long-distance travel and touring. Touring bikes have comfortable seating, large fuel tanks, and windscreen, luggage options, and advanced features like GPS and audio systems. They also have powerful engines to maintain highway speeds and handle extra loads. The Honda Gold Wing, BMW K1600GT, and Yamaha FJR1300 are examples of touring bikes.

• Cruisers

  The fourth kind of 4-stroke motorcycle is the Cruiser. Cruisers have low seats, relaxed ergonomics, and a classic design. Most cruisers use V-twin engines and are suitable for cruising at low to medium speeds. This makes them ideal for leisurely rides and city cruising. Harley-Davidson is well-known for its cruiser bikes, but other manufacturers like Indian Motorcycle and Yamaha also produce cruisers.

• Adventure and Dual-Sport Bikes

  The fifth type of 4-stroke motorcycles is the adventure and dual-sport bikes. Adventure bikes are designed for on-road and off-road touring. They have a comfortable seat, long suspension travel, and versatile features for different terrains. Dual-sport bikes are smaller and lighter than adventure bikes, designed mainly for on-road and off-road use. The BMW GS series, Honda Africa Twin, and Kawasaki Versys are examples of adventure bikes. The Honda CRF and Suzuki V-Strom are examples of dual-sport bikes.

• Off-road and Motocross Bikes

  The final type of 4-stroke motorcycles is off-road and motocross bikes. Off-road bikes are lightweight and have long suspension travel, rugged tires, and high ground clearance. These features make them suitable for various off-road terrains such as trails, forests, and deserts. Motocross bikes are high-performance bikes built for motocross racing. They have powerful engines, excellent suspension systems, and lightweight frames. Off-road bikes include the Honda CRF and Yamaha WRF series.

Specifications and Maintenance of 4-Stroke Motorcycles

• Engine: 4-stroke cycle engines use 4 strokes of the piston to complete one cycle. The first intake stroke sucks in air and fuel, and the second compression stroke compresses the mixture. The third power stroke ignites the compressed mixture, and the fourth exhaust stroke expels the burnt gases.
• Fuel: 4-stroke motorcycles use petrol or gasoline as fuel. The fuel should match the engine's requirements regarding octane rating and quality.
• Oil: 4-stroke motorcycles require engine oil in the crankcase for lubrication. The oil must be changed regularly according to the manufacturer's recommendations.
• Air: 4-stroke motorcycles need air to mix with fuel in the carburetor or fuel injector. The air should be clean and free of dust or debris before entering the engine.

4-Stroke engine maintenance is essential for optimal performance and durability. Following the maintenance schedule, users can keep their bikes running smoothly. Here are the general maintenance tips:

• Oil and filter change: Regularly change the engine oil and filter to ensure proper lubrication and cleanliness of the engine. This is usually done every 4 weeks or 1000km, whichever comes first.
• Air filter: Check and clean the air filter regularly, especially when riding in dusty conditions. Replace it after 5000km or according to the manufacturer's instructions.
• Valves: Check the valve clearance and adjust it as needed. This helps maintain proper engine performance and efficiency.
• Tires: Check tire pressure and condition regularly. Properly inflated tires with good tread ensure safety and optimal fuel efficiency.
• Chain: Lubricate and adjust the drive chain tension regularly. A well-maintained chain transfers power efficiently from the engine to the wheels.
• Brakes: Check the brake pads, discs, and fluid levels regularly. Ensure the braking system works correctly for safety.
• Cooling: Monitor the coolant level and condition in liquid-cooled engines. Keep the radiator and hoses in good shape for effective cooling.
• Electrical: Inspect the electrical system, including the battery, spark plugs, and cables. Ensure all connections are secure and clean.
• Frame: Inspect the frame and suspension for signs of wear or damage, mainly when riding off-road or on uneven surfaces.

How to Choose 4 Stroke Motorcycles

Business buyers should consider the following before purchasing 4-stroke motorcycles.

• Engine Size and Performance

  Buyers should purchase motorcycles with engine sizes and performance levels that suit their customers' needs and preferences. Customers who prefer riding on the road may purchase larger engines, as they offer more power. On the other hand, those who ride on the road may settle for smaller engine sizes.

• Type of 4-Stroke Motorcycle

  Buyers should select the type of 4-stroke motorcycle suitable for their customers' needs. If their customers need a bike for commuting, they should go for an affordable and fuel-efficient model. For customers who need a motorcycle for off-road purposes, they should look for a sturdy and durable bike.

• Brand Reputation

  Buyers should purchase motorcycles from reputable brands that are known for producing quality and reliable motorcycles. Going through online reviews can help buyers know the brand with a good reputation.

• Price and Value

  Buyers should purchase 4-stroke motorcycles that offer value for their money. Additionally, they should look for features such as maintenance costs and fuel efficiency that can impact the overall value of the motorcycle.

• Features and Specifications

  Buyers should look for features and specifications that suit their customers' needs. Some important features to look out for are suspension systems, braking systems, and fuel tank capacity.

• Warranty and Support

  Buyers should purchase 4-stroke motorcycles with a solid warranty and good customer support. This will ensure they have the necessary assistance in case of an issue.

• Test Ride

  Where possible, buyers should take the motorcycle for a test ride. This will enable them to know how it handles and its comfort level.

How to diy and replace 4-stroke motorcycles

Maintaining a 4-stroke cycle is very important in order to enjoy long rides and keep the bike in good condition. Here are some simple steps of how to replace some parts of the 4-stroke cycle.

• Replacing engine oil: To replace the engine oil, first, any new oil must comply with the manufacturer's specifications. The oil level must be checked using the dipstick while the motorcycle is upright. The oil should be filled until it reaches the recommended level if it is low. If the oil is overfilled, a siphon or suction pump can be used to remove the excess oil. After a long ride or when the engine is still running, the oil should be changed because it is hot and thin. The oil drain bolt located at the bottom of the oil pan should be removed, and a container should be placed underneath to catch the oil. The new oil should be poured into the oil fill port after letting the old oil drain completely. The oil drain bolt should be reinstalled after cleaning any residual oil from the pan. Before riding, it should be ensured that the oil drain bolt is tight to prevent leaks.
• Changing the air filter: Air filters should be changed at regular intervals or when wear and tear is visible. To change, first, the air filter should be removed and inspected. The air filter housing is located on the right side of the bike. The screws holding the cover in place should be removed using a screwdriver, and the cover should be gently pried off. The air filter should be carefully removed, taking care not to drop any debris into the engine. The new air filter should be installed by placing it in the housing and ensuring a proper seal. The air filter cover should be reinstalled and secured with the screws that were removed earlier.
• Changing the spark plug: Spark plugs should be replaced every 5,000 to 10,000 miles or when the engine misfires. To change a spark plug, first, the spark plug socket should be used to loosen the spark plug from the engine and then be removed by hand. The new spark plug should be gapped to the manufacturer's specifications using a feeler gauge. It should be carefully threaded into the engine and tightened to the specified torque using a torque wrench. The ignition coil should be reconnected to the spark plug, and the engine should be started to ensure proper operation.

Having a skilled mechanic check out the motorcycle is necessary if any major issues are discovered during these inspections or replacements.

Q and A

Q1: Are 4-stroke motorcycles good for long-distance travel?

A1: Yes, four-stroke motorcycles are generally suitable for long-distance travel. They tend to be more fuel-efficient and have lower emissions compared to their two-stroke counterparts. Additionally, four-stroke bikes usually offer a broader torque range, making them more comfortable for sustained RPM changes on highways or trails.

Q2: What are the advantages of 4-stroke motorcycles?

A2: Four-stroke motorcycles have several benefits. They are more fuel-efficient, produce less noise, and have longer lifespans compared to two-stroke engines. Additionally, they produce less pollution, making them a more environmentally friendly choice. Their broader torque range makes them versatile and suitable for various riding styles and conditions.

Q3: Do 4-stroke motorcycles require special fuel?

A3: Most four-stroke motorcycles run on unleaded petrol. However, some high-performance models may require premium petrol with a higher octane rating. Always check the manufacturer's specifications to ensure the appropriate fuel type is used for optimal performance and engine health.

Q4: Can beginners ride 4-stroke motorcycles?

A4: Yes, four-stroke motorcycles are often recommended for beginners due to their smoother power delivery and manageable torque. Some models are designed specifically for novice riders, featuring lower seat heights and reduced engine power.

Q5: How do I know if a motorcycle is 4-stroke?

A5: Users can check the owner's manual or the manufacturer's website to determine the engine type. Additionally, four-stroke motorcycles tend to have a more complex valve train and may be slightly heavier than two-stroke models due to the additional components.