(103 products available)
Ready to Ship
Ready to Ship
There are two types of Parsun 20hp engines: 2-stroke and 4-stroke.
Parsun 20hp 2-stroke engines
The 2-stroke engine works in two cycles: the first intake-compression and the second power-exhaust. During the intake-compression stroke, the piston rises from the bottom dead center (BDC) to the top dead center (TDC). As the piston moves up, the air-fuel mixture enters the bottom of the cylinder through a check valve, and the exhaust gases exit through the open exhaust port. When the piston reaches the top, the ports close, and the next stroke begins. The next power-exhaust stroke starts when the piston moves down from TDC to BDC. As the piston moves down, the exhaust port opens, and the remaining exhaust gases escape. At the same time, the piston descending creates a vacuum that pulls in a new air-fuel mixture from the bottom for the next cycle.
Parsun 20hp 4-stroke engines
The 4-stroke engine works in four strokes: intake, compression, power, and exhaust. During the intake stroke, the piston moves down from TDC to BDC, creating a vacuum that opens the inlet valve and allows the air-fuel mixture to enter the cylinder from below. Next, both valves are closed, and the compression stroke begins. The piston moves up from BDC to TDC, compressing the air-fuel mixture in the cylinder. In the power stroke, the spark plug ignites the compressed air-fuel mixture, causing an explosion that pushes the piston down from TDC to BDC. Finally, the exhaust stroke occurs as the piston moves up from BDC to TDC, and the exhaust valve opens to release the exhaust gases.
Regular Oil Changes
Engine oil lubricates internal parts and protects them from wear. Change the oil per the user's manual schedule, using the recommended type.
Air Filter Care
The air filter keeps dirt from entering the engine. Check it regularly and clean or replace it as needed for good airflow.
Fuel System Attention
Use fresh fuel as per instructions. Add the advised fuel additive for long storage. Inspect the fuel lines and fittings to prevent leaks.
Cooling System Checks
The cooling system stops the engine from overheating. Ensure the water pump and cooling passages work. Inspect the hoses and fittings for leaks or wear.
Spark Plug Inspection
Check the spark plugs for good engine performance. Clean or replace them as per the schedule in the user's manual.
Regular Maintenance
Follow the schedule in the user's manual for routine maintenance. This may include things like checking the oil level, adjusting the valves, and doing a general inspection of the engine parts.
Propeller Inspection
Check the propeller for damage, such as cracks or chips. Replace a damaged propeller to avoid engine strain.
Electrical System Checks
Regularly check the electrical connections, wiring, and battery. Ensure everything is clean and tight for reliable starting and operation.
Engine Cooling
The Parsun 20 HP outboard motor is water-cooled. This is done by a cooling system that uses a water pump to circulate water through the engine. This helps to regulate the engine's temperature and prevents it from overheating.
Engine Starting
The Parsun 20 HP outboard motor can be started using either an electric start or a manual start. The electric start requires a 12V battery to be connected to the outboard motor, while the manual start involves using a pull cord to manually start the engine.
Engine Speed Control
The engine speed can be controlled using the throttle control lever, which is located on the motor's tiller handle or on the remote control box (for models with remote steering). The throttle control lever allows the user to adjust the engine speed, increasing or decreasing the boat's speed as required.
Gear Shifting
The gear shift lever allows the user to shift gears. The gears available are Forward (F), Neutral (N), and Reverse (R), allowing for smooth sailing and easy docking or beaching.
Engine Stop Switch
The engine stop switch is used to stop the engine quickly in case of an emergency. It is usually located on the tiller handle or on the remote control box. Pulling the lanyard cord will disconnect the engine from the motor, stopping it immediately.
Fuel Primer Bulb
Models with fuel primer bulbs allow users to pump fuel into the fuel system, helping to prime the engine before starting. Pressing the fuel primer bulb will fill the fuel lines and carburetor with fuel, ensuring a ready fuel supply before starting the engine.
Trim and Tilt Adjustment
The trim and tilt adjustment feature allows users to adjust the angle of the outboard motor in relation to the water surface. This helps to optimize the boat's performance, speed, and fuel efficiency, depending on the water conditions and the load on the boat.
Safety Features
The Parsun 20 HP outboard motor is equipped with various safety features, such as overheat protection, low oil pressure warning, and a kill switch. These features help to ensure the engine's safe and reliable operation, minimizing the risk of damage to the engine or the motor in case of any abnormal conditions.
When selecting a parsun 20hp outboard motor, consider the following:
Type of Engine
Parsun offers two types of engines for their 20 HP outboard motors: 2-stroke and 4-stroke. The 2-stroke engines are lighter and provide more power for their weight, making them suitable for high-speed applications. They are also simpler and require less maintenance. However, they are less fuel-efficient and produce more emissions. On the other hand, the 4-stroke engines are more popular because they are fuel-efficient, have lower emissions, and provide better torque. They are also quieter and require less lubrication.
Fuel Efficiency
When using a 4-stroke engine, buyers can expect to save up to 40% more fuel compared to a 2-stroke engine. This is because 4-stroke engines are designed to use fuel more efficiently. They have a separate chamber for fuel and oil mixing, leading to lower emissions and better fuel efficiency.
Weight and Portability
Consider the weight and portability of the outboard motor. If a lightweight motor is needed, the 2-stroke engines are typically lighter than the 4-stroke engines. Parsun offers a 20 HP outboard motor that weighs 45 kg, making it a lighter option. A lighter motor can be beneficial for tasks such as lifting, carrying, or mounting on a boat.
Noise Level
Noise level is an important factor to consider when choosing an outboard motor. The 4-stroke engines are generally quieter than the 2-stroke engines. If a peaceful boating experience is desired, opting for a 4-stroke engine would be more suitable.
Torque and Thrust
If more torque and thrust are needed, the 4-stroke engines are the better choice. They provide consistent power delivery, making them ideal for tasks that require pulling or pushing heavy loads.
Maintenance
Maintenance requirements vary between the two types of engines. 2-stroke engines are generally easier to maintain, requiring less frequent maintenance and fewer components. However, regardless of the engine type, regular maintenance, such as checking the oil level, spark plugs, and cleaning the fuel system, is essential for optimal performance and longevity.
Application
Consider the intended use of the outboard motor. If the motor is to be used for fishing, a trolling-friendly motor with lower-speed options would be beneficial. For recreational purposes, a motor with higher speeds and performance capabilities may be preferred.
Price
Parsun offers affordable 20 HP outboard motors. However, the 2-stroke engines are usually cheaper than the 4-stroke engines. It's important to consider the budget and find a motor that fits the desired features and performance within the price range.
Below is a step-by-step guide on how to replace a Parsun 20hp engine.
Step 1: Safety Precautions
Before beginning the replacement process, it's important to ensure safety. This includes disconnecting the battery to prevent any electrical accidents and being aware of the weight of the outboard motor when lifting or handling it.
Step 2: Prepare the New Engine
Before installation, make sure that the new engine has been compared to the old one. This includes checking that the mounting points, exhaust and cooling water paths, fuel and oil systems, electrical systems, and control systems are all equivalent to ensure perfect integration.
Step 3: Remove the Old Engine
To remove the old engine, first, detach all systems that were connected to the old engine, such as the fuel system, electrical system, and control system. Then, unmount the engine from the transom and carefully lift the engine out of the boat.
Step 4: Install the New Engine
Put the new engine onto the transom and ensure it is aligned properly. Then, use mounting hardware to secure the engine to the transom. After that, connect all systems, including the fuel system, electrical system, and control system.
Step 5: Check and Test
Once the new engine has been installed, it is important to check all systems to ensure there are no leaks and all connections are secure. After that, perform a test run to ensure the engine is running smoothly and all systems are functioning properly.
Q1: How fast does a 20 HP motor go?
A1: The top speed of a 20 HP motor depends on several factors, including the weight and design of the boat, the water conditions, and the type of boat. Typically, a 20 HP motor can achieve speeds of 10-15 mph (16-24 kph) with an average-sized boat in normal water conditions.
Q2: Is a 20 HP engine good for a boat?
A2: A 20 HP engine can be good for small and lightweight boats, such as canoes, kayaks, or small sailboats. It's also suitable for slow-speed cruising, fishing, or recreational activities. However, for larger boats or those needing higher-speed performance, a 20 HP engine might be underpowered.
Q3: How do you break in a Parsun 20hp engine?
A3: To break in a Parsun 20hp engine, users should run it at varying speeds and avoid full-throttle operation for the first few hours. Regular maintenance and adherence to the user manual are also important during the break-in period.
Q4: Can people upgrade from a 15hp to a 20hp engine on their existing boat?
A4: Upgrading from a 15hp to a 20hp engine is generally feasible, provided the boat's transom, fuel system, and overall design can accommodate the additional weight and ensure proper balance. Users should consult with a marine technician or the engine manufacturer to confirm compatibility before upgrading.
浙公网安备 33010002000092号
浙B2-20120091-4