MS333 - Pump Maruyama - Free user manual and instructions

Product Type	High-pressure water pump for agricultural spraying and irrigation
Brand	Maruyama
Model	MS333
Dimensions (L × W × H)	403 × 243 × 281 mm
Weight	7.2 kg
Max crankshaft speed	1300 rpm (irrigation)
Max suction capacity	35 L/min (irrigation)
Max pressure	3.5 MPa (irrigation)
Required power	2.1 kW (2.9 PS)
Engine oil type	SAE10W-30 or SAE30 non-detergent
Oil capacity	0.42 L
Suction hose	19 × 3000 mm, G3/4 fitting
Overflow hose	13 × 3000 mm, G1/2 fitting
Main valve	G1/4 × 2
Usage	Agriculture, irrigation, chemical spraying (non-industrial)
Maintenance	Oil change every 50 hours; inspection of valves and pistons; antifreeze protection
Pressure adjustment	Adjustment knob from 0 to 3.5 MPa; regulation button
Spare parts	Seal, valve, piston, strainer, hoses available at authorized dealer
Warranty	Contact an authorized Maruyama dealer

Frequently Asked Questions - MS333 Maruyama

How to start the MS333 pump?

Before starting, check the tightness of the screws, fill the oil sump (SAE10W-30) to the center level of the dipstick, pour a few drops of oil into the engine crankcase holes, then install the suction and overflow hoses. Open the main valve and start the engine. If water does not come out, purge the air by opening the purge valve.

What oil to use for the Maruyama MS333 pump?

Use SAE10W-30 or SAE30 non-detergent oil. The oil sump capacity is 0.42 liters. Check the level with the dipstick and fill to the center.

How to adjust the spray pressure?

Use the pressure adjustment knob located on the pump. Turn it clockwise to increase pressure (up to 3.5 MPa) and counterclockwise to decrease it. For irrigation, set to about 2.5 MPa. Refer to the performance curves for precise adjustment.

What to do if the pump does not suction liquid?

Check that the main valve is fully open. If the pump still does not suction, open the valve, let the air escape, then close it as soon as liquid arrives. Also ensure the strainer is not clogged and that the hoses are properly connected without leaks.

Why do the hoses vibrate during operation?

The vibrations are due to air in the air chamber. To eliminate them, lift the suction strainer out of the water for about 10 seconds so it draws air, then put it back in the water. The vibrations will stop after the air is released.

The pressure does not rise, what to check?

Check the belt tension (it should deflect 15 to 20 mm under moderate pressure). Inspect the pressure regulating valve for wear and replace if necessary. Also ensure the nozzle is not clogged or too large in diameter.

How to clean the pump after use?

After each spraying, rinse the pump with clean water by running the sprayer with water for one minute. Then remove the suction and overflow hoses, and set the regulation button to the 0 position.

How to protect the pump from frost in winter?

Completely drain the water from the pump before winter storage. Follow steps 11 to 18 of the shutdown procedure: wash with clean water, run without liquid for one minute, then remove hoses and drain all water.

What is the oil change frequency?

Replace the engine sump oil every 50 hours of use after the first startup. Use SAE10W-30 or SAE30 non-detergent oil.

Where to find spare parts for the MS333 pump?

Contact an authorized Maruyama dealer or the store where you purchased the device. Common parts (seals, valves, pistons, strainers, hoses) are available. Check the reference on the serial number label.

USER MANUAL MS333 Maruyama

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INSTRUCTION MANUAL

MODE D'EMPLOI

Specifications

Model			MS157		MS333
Dimensions	Overall length (mm)		378		403
	Overall width (mm)		215		243
	Overall height (mm)		288		281
Weight (kg)			6.9		7.2
			Maximum	Irrigation	Maximum	Irrigation
Specifications	Crankshaft speed	(rpm)	1000	1400	1050	1300
	Suction capacity	(L/min)	13	17.5	30	35
	Pressure	MPa	3.5	1.0	3.5	2.5
	Required power	kW	1.0	0.5	2.1	2.0
		(PS)	(1.4)	(0.7)	(2.9)	(2.7)
Suction hose (mm)			13× 3000, G^1/_2		19× 3000, G^3/_4
Overflow hose (mm)			13× 3000, G^1/_2
Main cock			G^1/_4×2
Type of Lubricant			SAE10W-30, or SAE30 Non-detergent
Lubricant volume(L)			0.23		0.42

Performance curve

Specifications

Model			MS157		MS333
Dimensions	Overall length		14.9"		15.9"
	Overall width		8.5"		9.6"
	Overall height		11.3"		11.1"
Weight (lbs)			15.2		15.9
			Maximum	Irrigation	Maximum	Irrigation
Specifications	Crankshaft speed	(RPM)	1000	1400	1050	1300
	Suction capacity	(GPM)	3.4	4.6	7.9	9.2
	Pressure	PSI	510	146	510	364
	Required power	HP	1.3	0.7	2.8	2.7
Suction hose			^1/2"× 9.8', G^1/2		^3/4"× 9.8', G^3/4
Overflow hose			^1/2"× 9.8', G^1/2
Main cock			G^1/4× 2
Type of Lubricant			SAE10W-30, or SAE30 Non-detergent
Lubricant volume (OZ)			8		14.5

Performance curve

Operating procedure

Be sure to check all the screws for tightness.

4 Attaching the strainer for the hose coupling.

8 Starting

1 Lubricating oil.

Fill the lubricating oil into the crankcase up to the center level of the gauge.

5 Insert the suction hose and overflow hose into the chemical tank.

9 Pressure regulation.

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2 Oiling

Feed a few drops of oil into the 3 holes of the crankcase.

6 Coincide knob of pressure regulator with 0.

10 Spraying

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3 Installing the suction hose and overflow hose.

When installing the suction hose, check the condition and presence of sealing gaskets at the threaded couplings.

7 Close the valve.

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11 Stopping spraying

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12 Wash up with the clean 15 Stopping the operation. water after spraying.

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13 Running the Power Sprayer.

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16 Detach the suction hose and overflow hose.

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14 Continue to run the sprayer for one minute after raising the strainer.

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17 Resume knob to 0 position.

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Caution!!

Running the sprayer for more than one minute without the presence of liquid may cause severe pump damage!

Protection from freezing.

Water should be completely drained during winter storage to prevent freezing. The operation is performed according to items from 11 to 18 in the operation procedure.

Inspection and adjustment

Discharge valve and its vicinity.

Inspect discharge valve and valve seat for wearing degree over their contact surface. Replace worn or spoiled ones, if any.

Piston and its vicinity.

Inspect parts as exploded for damage wear break, etc. Lubricate mobile oil over piston packing when reassembled.

Replacement of Crankcase oil.

Replace at 50 hours operation after initial operation.

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Precautions

Thank you very much for your purchase this time. Needless to say, no matter how excellent the quality of the product may be it won't display its maximum potential performance unless operated properly.

Read this instruction manual repeatedly prior to operation in order to make the best use of the product.

Power sprayers are for agricultural or irrigation uses and not for industrial use. Therefore, do not use chemicals, seawater, hot water, etc. When agrichemicals are used, read and follow the instruction manual for chemicals.

For further information or assistance, please contact the nearest authorized Maruyama Dealer of the store which you purchased this product from.

When pump fails to suck liquid.

graph TD
    A["① Open main cock."] --> B["② Once pump sucks liquid."]
    B --> C["③ Close main cock."]

When hoses are vibrating themselves...

Hose vibration occurs when air is released out of air-chamber. It will stop if you let air send forth as following procedural.

When pressure fails to get accumulated...

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Attention !!

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Précautions

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2 Lubricación

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Cuidado!

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Precaución