Parsun 50hp

Types of Parsun 50hp

There are two main types of Parsun 50hp engines: the four-stroke and two-stroke engines.

• Parsun 50hp four-stroke engines:

  The power cycle of a four-stroke engine goes through four distinct strokes or phases of piston movement within the cylinder during two revolutions of the crankshaft. The strokes are:

  1. Intake stroke: During this stroke, the piston moves down the cylinder, and an intake valve opens. This action creates a vacuum that draws in an air-fuel mixture from the surrounding atmosphere into the cylinder.

  2. Compression stroke: The intake valve closes as the piston moves up the cylinder. This action raises the pressure and temperature of the air-fuel mixture within the cylinder. The rising piston also pushes the remaining exhaust gas out of the exhaust valve, which then closes before the next cycle begins.

  3. Power stroke: The piston reaches the bottom of the cylinder, and the spark plug ignites the compressed air-fuel mixture, producing a powerful explosion. This explosion forces the piston down the cylinder, generating power to turn the crankshaft.

  4. Exhaust stroke: The exhaust valve opens as the piston moves back up the cylinder. The upward motion pushes the remaining exhaust out of the valve, completing the cycle.

  Four-stroke engines are predominantly used in larger boats. This is because they are fuel-efficient and have lower emissions. They also have a longer engine life and are quieter.

• Parsun 50hp two-stroke engines:

  In two-stroke engines, the power cycle occurs in two strokes of the piston, resulting in one power stroke for every rotation of the crankshaft. The two strokes are:

  1. During the first stroke, the piston moves up the cylinder, creating a vacuum that compresses the air-fuel mixture in the lower part of the cylinder. This action also opens the inlet port and allows the already compressed mixture to enter from the surrounding atmosphere.

  2. The second stroke occurs when the piston moves down the cylinder, covering the inlet port and compressing the mixture in the upper part of the cylinder. The upward movement of the piston also pushes the exhaust gases out through the open exhaust port.

  Parsun 50hp two-stroke engines are mainly used in smaller boats. They are lighter, cheaper, and more powerful.

Specification & Maintenance of Parsun 50hp

Below are some of the specifications of the Parsun 50hp motor.

• Engine Type:

  Parsun 50hp has a V 2-cylinder, 4-stroke, water-cooled engine with a gear ratio of 2.08:1.

• Displacement:

  The engine has a displacement of 999 cm3.

• Max Output:

  Parsun 50hp outboard motors have an engine output power of 37.3kw at 5800r/min, and the thrust is 250kg.

• Dimension:

  The length, width, and height of the Parsun 50hp engine are 1150mm, 400mm, and 1040mm, respectively. The dry weight is 109kg, and the fuel tank capacity is 25L.

• Features:

  Some features of the Parsun 50hp include an electric starter, a manual starter, an alternator with a 12V charging system, and a 50:1 oil/fuel ratio.

Here are some maintenance tips for the Parsun 50hp motors:

• Check the oil level and ensure it's at the recommended level before using the motor.
• Inspect the cooling water supply to ensure adequate water supply before using the motor.
• Check the fuel system regularly for leaks, cracks, and damage and replace them if necessary.
• Replace the engine oil and oil filter after every 100 hours of use or at least once a year.
• Inspect the propeller for any damage or cracks and replace it if necessary.
• After every 100 hours of use, check the spark plugs and clean them if necessary.
• Check the entire motor for loose bolts and tighten them if necessary.
• After every 200 hours of use, check the valve clearance and adjust it if necessary.
• Check the anodes for corrosion and replace them if necessary.
• After every 300 hours of use, do a complete motor service.

How to choose parsun 50hp outboard motors

There are several factors_PARSE to consider when purchasing a Parsun 50hp outboard motor. Some of these factors are listed and discussed below.

• Application:

  The intended use of the outboard motor should be put into consideration. Will it be used for fishing, leisure, or commercial purposes? Different activities have different requirements. For example, frequent stops and starts are common in fishing, so a motor with good torque and reliability is needed.

• Weight and boat size:

  Consider the boat size and the boat's weight that will be powered by the outboard motor. A heavier motor can affect the boat's performance and stability. As a rule of thumb, boat owners should ensure that their boat has one or two additional people onboard to test the motor's performance before purchasing.

• Fuel efficiency:

  Generally, 4-stroke engines are more fuel-efficient than 2-stroke engines. For casual boat owners who are not ready to spend a lot on fuel, a fuel-efficient motor is their best choice. Parsun 50hp 4-stroke outboard motors are known for their fuel-efficient capabilities.

• Noise and emissions:

  There are no standard measurements for the noise level of outboard motors. However, users can compare the specifications of different models to know the one with the lowest noise level. Also, considering the emissions level of the outboard motor is important for environmentally conscious boat owners. Electric outboard motors are virtually emission-free.

• Maintenance:

  When choosing an outboard motor, maintenance should be considered. Some motors require more frequent servicing than others. Users should choose motors that are easy to maintain and have accessible service points.

How to DIY and Replace Parsun 50hp

Parsun 50hp outboard motors can be replaced with some technical skills. Here are the steps to follow:

• Gather all necessary tools: This includes a socket wrench set, screwdrivers, and the new outboard motor. Make sure to have a soft blanket or foam padding to protect the boat's transom and the outboard motor from scratches.
• Shift the new motor to the work area close to the boat for easy access during installation.
• Disconnect the battery: This is done by removing the negative terminal from the battery. The process prevents any electrical short circuits or accidents while replacing the motor.
• Drain the fluids: Use the appropriate tools to drain the motor's oil and fuel into a suitable container. This prevents spills and makes it easier to replace the motor.
• Disconnect the steering: This is done by loosening the steering shaft clamp and separating it from the motor.
• Disconnect the control cables: This includes the throttle and shift cables. Make sure to take a photo or make a note of their routing and connections for reinstallation.
• Remove the motor: Use a socket wrench to remove the bolts or nuts securing the motor to the boat's transom. Carefully lift the outboard motor off the transom by sliding a piece of plywood or a transom pad under the motor's lower unit.
• Prepare the transom: Clean the area where the new motor will be mounted. This includes removing any old silicone sealant or caulking and inspecting the transom for any damage or rot.
• Mount the new motor: Position the new motor so that its lower unit is aligned with the transom. Carefully lower the motor onto the transom, ensuring it is centered and straight.
• Secure the motor: Use a socket wrench to install the bolts or nuts fastening the motor to the transom. Tighten the bolts or nuts in a crisscross pattern to distribute the pressure evenly.
• Reconnect the control cables, steering, and electrical system: Refer to the notes or photos taken during disassembly to ensure the cables are routed and connected correctly.
• Refill the fluids: Fill the new motor with oil according to the manufacturer's specifications. Do not fill the fuel tank and connect the fuel lines to the outboard motor.
• Reconnect the battery: This is done by attaching the negative cable to the battery's terminal.
• Perform a test run: Start the new motor and let it idle for a few minutes. Check for any leaks, unusual noises, or vibrations. Test the throttle and steering to ensure everything functions.

Q and A

Q1: How fast can a 50hp outboard motor be?

A1: The speed of a boat with a 50hp outboard motor depends on various factors, including the boat's size and type, weight, and water conditions. Generally, a 50hp outboard motor can propel smaller, lighter boats to speeds ranging from 25 to 30 mph (40 to 48 kph) or more. Larger or heavier boats may have lower top speeds, typically between 20 to 25 mph (32 to 40 kph).

Q2: How often should the oil be changed on a 50hp outboard?

A2: Oil changes on a 50hp outboard should be performed regularly, typically every 100 hours of operation or at least once a year, whichever comes first. However, more frequent oil changes may be necessary for high-load or recreational use.

Q3: Can a 50hp outboard be used for freshwater fishing?

A3: Yes, a 50hp outboard is suitable for freshwater fishing. It provides adequate power for most fishing boats, including smaller bass boats, canoes, and fishing skiffs.