Neptune Portable Sprayers are conventional and most popular equipment used world wide. They are ideal to spray insecticides, pesticides, fungicides, herbicides etc. in field areas to protect the crop from pest attack. These Sprayers have multiple applications, and are widely used in agriculture, horticulture, sericulture, plantations , forestry, gardens etc. ... 2 stroke & 4 stroke Feature 2-Stroke Power Sprayer 4-Stroke Power Sprayer Fuel Used Petrol mixed with 2T oil Only petrol (20W-40 oil separate add) Maintenance Higher maintenance required Low maintenance Fuel Efficiency Less fuel efficient More fuel efficient Noise Level More noise Less noise, smoother running Starting Easy and quick start Smooth and stable start Weight Lighter in weight Slightly heavier Power Output High power for short duration work Consistent power for long duration work Operating Cost Higher running cost Lower running cost Best Usage Small farms, occasional use Large farms, regular & professional use