Nakayama 038153, Instructions Manual

EN

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Regulate the choker (see Figure 4) to close position in winter and at the first time to full open position when the engine 
is hot. Pull the starter lightly for 3-5 times to make the fuel flow to the cylinder. Then pull it fast to start the engine. 
Note: After start, the start rope should be contracted back slowly with hand’s help. If the rope contracts back fast, it may 
cause damage of the starter. After start, put the choker slowly to full open position. Regulate the fuel handle to a proper 
position to run at low speed for 3-5 minutes, then make spraying operation. New machine should not work at full open 
position within the first 4 hours. The speed should be controlled at 4000-5000 rpm thus enabling the engine to have a 
good match and do reliable job.

Spraying

Adding chemical liquid: Before adding chemical liquid, spray which water to test if there is leakage. When adding chem

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ical liquid, it should be neither very fast nor excessive full. The liquid must be assured to be through the filter in order to 
avoid foreign matter coming into the chemical tank to cause coming into the chemical tank to cause machinery break

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downor nozzle block. After finish of adding liquid, screw down chemical tank lid in order to avoid leakage, when adding 
liquid, the machine need not stop, but should be at low speed.(i. e. not at spraying position).

Pressure regulation

When the engine’s speed is 5000-6000r/min, regulate the  water pressure of plunger pump. This has been done before 
leaving the factory. If it is necessary to regulate, please do this procedure as per the instruction of Figure 5.

Spraying: Put the machine on the back. Regulate the fuel handle to let the machine run at about 6500 rpm and turn on the handle spraying valve, then start 
spraying operation. Some important notes for spraying operation:

a. Swing the spraying tube with hand after turning on the handle valve. In order to avoid chemical harm, it is strictly prohibited to spray only at one place.
b. Operator should face to wind. The spraying tube should form about 15

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 angle with level.

c. During spraying, the spraying tube should be swung continuously between the left and the right to increase spraying range. Advanced steps should cooperate 
with the swing speed.

Safe Operation

Read the instruction book carefully. Inquire the local retailers if there is anything confused.

Protective clothing: a) Wear flanged cap, b) Wear dirt/fog-proof glasses, c) Wear gauze mask, d) Wear coat guarding against poisons, e) Wear long-sleeve 
gloves, f) Wear boots. 

Mentally disabled, persons that have consumed alcohol, underaged or people of old age, persons without any knowledge of the machine,  persons who have 
just exercised strenuously or slept inadequately and also breast feeding or pregnant women should not use the knapsack sprayer under no circumstances. 

Avoidance of fire 

i) Do not make fire or smoke nearby the machine, ii) Never refuel the machine when it is hot or running, iii) Never pour fuel on the machine. If you do, please 
clean it off. After adding fuel, please screw down the fuel tank lid, then move the machine to another place for start.

Spraying operation

i) Chemical-spraying should be performed under cool weather with little wind. For example, in the early morning or in the late afternoon. This can reduce evap

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orations and drift of chemicals and improve protecting effect, ii) The operator should move towards winds, iii) If chemical spattered into mouth or eyes, wash 
them with clean water and then go to see the doctor, iv) If the operator has o headache or dizziness, stop working immediately and go to see the doctor in time.
v) For the operator’s safety, spraying must be carried out strictly according to the instruction of the chemicals. It is strictly prohibited to spray extreme poison

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ous chemicals. 

Maintenance and long time storage 

Daily maintenance: 

The following maintenance should be done after daily job: a) Clean the surface of the machine b) Clean chemical tank with clean water and dry it, c) Check all 
the connections whether there is leakage of water or fuel. If there is leakage, remedy procedures are very necessary, d) Check all the screws to see if they are 
loose or lost. If there is, please screw tightly or replace, e) Lubricating oil should be injected into the oil inlet after every 24-hour’s operation, f) This machine 
after maintenance should be put in dry and ventilating place. It must be far away from fire source and avoid sunlight.

Long term storage: 

a) Clean the machine surface carefully, b) Discharge fuel in the tank and carburetor entirely, turn off the choker, pull the starter 3-5
times, c) Remove the spark plug and pour some oil into the cylinder, then pull the starter for 2-3 times lightly, finally put on the spark plug d) Inject lubricating 
oil into the gearbox and crankcase, e) All the plastic parts must neither exposed to the sunlight nor pressed by heavy matter.

Figure 2 

Figure 4 

Figure 5