Mechnova MS20B-4SB 20L Knapsack Sprayer – 35.8cc 4-Stroke Petrol Engine

Mechnova MS20B-4SB 20L Petrol Knapsack Sprayer – 35.8cc 4-Stroke Engine

Mechnova MS20B-4SB is a 20-litre petrol-powered high-pressure knapsack sprayer designed for agricultural spraying, crop protection, horticulture, orchards, nurseries, plantations and gardening applications.

The machine is powered by a JX35 35.8cc air-cooled 4-stroke petrol engine with a specified maximum output of 1.0 kW at 7000 RPM and maximum torque of 1.4 Nm at 5000 RPM.

The spray system operates within approximately 1.5–2.5 MPa and delivers a liquid flow rate of 3.3–7 litres per minute. The sprayer is equipped with a 20-litre solution tank, built-in top filter, measuring scale and adjustable shoulder straps.

Product Specifications

Key Features & Benefits

• 20 Litre Solution Tank: Suitable for agricultural spraying with fewer refills compared with smaller tanks.
• 35.8cc 4-Stroke Engine: Equipped with a JX35 air-cooled petrol engine.
• 1.0 kW Maximum Power: Specified maximum engine output at 7000 RPM.
• 1.4 Nm Maximum Torque: Specified maximum torque at 5000 RPM.
• High-Pressure Spraying: Operates at approximately 1.5–2.5 MPa.
• 3.3–7 L/min Flow Rate: Supports different spraying requirements within the specified flow range.
• Built-In Top Filter: Helps restrict larger unwanted particles from entering the spray system.
• Measuring Scale: Helps monitor solution quantity.
• Recoil Starting: Manual engine-starting system.
• Adjustable Shoulder Straps: Designed for knapsack-style field operation.

Applications

• Pesticide spraying
• Insecticide application
• Fungicide spraying
• Herbicide application
• Liquid fertilizer spraying
• Plant nutrient application
• Crop protection
• Orchard spraying
• Nursery maintenance
• Plantation spraying
• Garden maintenance
• Horticultural applications
• Commercial agricultural spraying

Suitable Working Areas

• Agricultural farms
• Crop fields
• Vegetable farms
• Orchards
• Nurseries
• Plantations
• Gardens
• Horticultural farms

How to Use

1. Inspect the sprayer before operation.
2. Check the engine-oil level according to manufacturer instructions.
3. Fill the fuel system with the recommended petrol.
4. Inspect the solution tank, hose, lance, nozzle and connections.
5. Check that the top filter is clean.
6. Prepare the spray solution according to the agricultural chemical label.
7. Pour the solution into the tank through the filter.
8. Do not exceed the 20-litre rated capacity.
9. Secure the tank cap.
10. Start the engine using the recoil starter.
11. Adjust pressure according to the application requirement.
12. Apply uniformly over the target crop or area.
13. Switch off the engine before cleaning, adjustment or servicing.

Pesticide & Insecticide Spraying

The Mechnova MS20B-4SB can be used with compatible pesticide and insecticide formulations. Always follow the chemical label regarding crop, pest, dose, dilution, water volume, spray timing and safety requirements.

Fungicide Application

Use compatible fungicide formulations according to their product labels. Maintain suitable coverage while avoiding unnecessary runoff.

Herbicide Application

When applying herbicides, prevent spray drift onto desirable vegetation. Use the correct nozzle and pressure according to the herbicide label.

Thoroughly clean the tank, hose, lance and nozzle before using the sprayer for another crop-protection product.

Liquid Fertilizer & Plant Nutrient Application

Compatible liquid fertilizers and foliar nutrients may be used where their labels permit powered spray application. Verify formulation compatibility before filling the tank.

Maintenance Instructions

• Check engine oil regularly.
• Replace engine oil according to the manufacturer's schedule.
• Clean the air filter periodically.
• Wash the 20-litre solution tank after use.
• Clean the top filter.
• Flush the hose, lance and nozzle after spraying.
• Check hoses, seals and connections for leakage or damage.
• Inspect the pump and pressure system.
• Keep nozzle openings clean.
• Check the recoil starter.
• Keep engine cooling passages free from dirt.
• Do not leave spray solution inside the tank during storage.
• Store in a clean, dry and covered location.

Safety Instructions

• Read the equipment manual before operation.
• Read the agricultural chemical label before preparing the spray.
• Wear suitable gloves and protective clothing.
• Use eye protection.
• Use respiratory protection when required by the chemical label.
• Avoid skin and eye contact.
• Avoid inhaling spray mist.
• Never spray toward people or animals.
• Avoid spraying in strong winds.
• Keep children and animals away from the operating area.
• Do not refuel while the engine is running or hot.
• Keep petrol away from flames, sparks and heat sources.
• Stop the engine before maintenance or cleaning.

Frequently Asked Questions

What is the model number?

The model is MS20B-4SB.

What is the solution tank capacity?

The sprayer has a 20-litre solution tank.

What type of engine does it use?

It uses a JX35 35.8cc air-cooled 4-stroke petrol engine.

What is the maximum engine power?

The supplied specification is 1.0 kW at 7000 RPM.

What is the maximum torque?

The supplied specification is 1.4 Nm at 5000 RPM.

What is the operating pressure?

The operating-pressure range is 1.5–2.5 MPa.

What is the liquid flow rate?

The specified flow rate is approximately 3.3–7 L/min.

Does it have a top filter?

Yes. The supplied specifications list a built-in top filter.

Does the tank have a measuring scale?

Yes. An integrated measuring scale is listed in the supplied specifications.

Can it be used for pesticide spraying?

Yes. It can be used with compatible pesticide formulations according to their label directions.

Can it be used for herbicides and fungicides?

Yes, provided the formulation is compatible with the equipment and all chemical-label instructions are followed.

Is the tank material HDPE?

The tank material was not provided in the supplied specifications, so it should not be listed as HDPE without manufacturer confirmation.

Disclaimer

Product specifications, appearance and included accessories may vary by production batch. The information above is based on the supplied Mechnova MS20B-4SB details. Always verify the physical machine, included accessories and manufacturer's operating manual before use.