NAKAYAMA NS4010 Gasoline Sprayer Owner’s Manual

NAKAYAMA NS4010 Gasoline Sprayer

General

Please ask you carefully read the owner’s manual before operating a gasoline engine. A general-purpose gasoline engine has fine quality since it bears the advantages of easy starting, reliable power output, saving fuel, small running noise and vibration, low displacement, multi-power fan-out type, and a perfect after-sale service system to let you use without worry.

This series gasoline engine adopts a single-cylinder, four-stroke, forced air cooling, OHV25° inclined, bottom place camshaft, transistor non-contact ignition, and reliable machine oil warming system. It is small in size, light in weight, and compact in structure. This manual includes gasoline engine series lately and timely operation and service information (drawing of the manual does not completely represent actual matter and is only for reference). It has guidance for your operation. Since the product is being improved all the way, the gasoline engine will be subject to modifications and improvement without prior notice.

If this gasoline engine is resale, the manual should be regarded as a fixed part, companying with the gasoline engine to resell.

CAUTION
Please read this manual carefully before operating, and strictly operate according to the requirements of the manual. Our gasoline engine is reliable and safe without person injured and equipment damaged, but, if not following the requirement of the manual in operation, it will lead to the person injured and equipment damaged.

Application Range
A general-purpose gasoline engine, being as a power source, can be used for generating sets, water pumps, mini tillers, garden and architecture machinery, etc terminal products, except for automotive applications.

Main Description

1. Fuel Tank
2. High Temperature Appliqué
3. Oil Dipstick
4. Crankshaft fan out
5. Muffler
6. Air cleaner
7. Fuel Tank cover
8. Cylinder Head Cover
9. Carburetor Assy
10. Starter Comp
11. Starter Grip

• The manufacturer reserves the right to make minor changes to product design and technical specifications without prior notice unless these changes significantly affect the performance and safety of the products. The parts described/illustrated in the pages of the manual that you hold in your hands may also concern other models of the manufacturer’s product line with similar features and may not be included in the product you just acquired.
• Please note that our equipment has not been designed for use in commercial, trade, or industrial applications. Our warranty will be voided if the machine is used in commercial, trade, or industrial businesses or for equivalent purposes.
• To ensure the safety and reliability of the product and the warranty validity, all repair, inspection, repair, or replacement work, including maintenance and special adjustments, must only be carried out by technicians of the authorized service department of the manufacturer.

Safety Notes

WARNING

To Ensure Safe Operation
Don’t operate when you are tired, ill or under the influence of alcohol, otherwise, may result in serious injury.

CAUTION

• The operators must be specially trained. Persons who are not qualified to operate a gasoline engine are strictly forbidden to operate this gasoline engine.

• During the operation of the gasoline engine, the exhaust gas contains some compound of CO and CH (content keeping within standard). In order to avoid accidents, the engine must not be used indoors. If it has to be used indoors, the exhaust gas must be led to the out of the room and the outlet of the guide pipe must be not less than 1m from the doors & windows, meanwhile, the air in the room must be free from inhibition.

• For your and others’ safety, please pay attention to the following safety labels:
  HIGH-TEMPERATURE PART! DON’T TOUCH IT!
  The engine and exhaust system become very hot during operation and remain hot for a while after stopping. Contact with hot engine components can cause burn injuries and can ignite some materials

• Keep the gasoline out of reaching the children.

• Don’t allow to place inflammable, explosive, and any other dangerous substances around the gasoline engine to avoid firing.

• The working condition shall be ventilated. The fire source must be kept not less than 10m away from the engine. What’s more, the engine must lie in the upper wind direction of the fire source.

• When filling in fuel & lubrication oil, the engine must be stopped.

• Strictly prohibit smoke in filling, don’t allow fuel and lubrication oil overflow. If the fuel or lubrication oil overflow or leak out, thoroughly clean it before the engine is started.

• Don’t allow starting of the gasoline engine to avoid the gasoline engine damage before filling lubrication oil or filling lubrication oil not enough.

CAUTION
If long time repeated contact with gasoline, it can lead to skin cancer. Though it is a small possibility, each day contact with gasoline can be possible. After each using gasoline, wash hands with water and soap as soon as possible. Keep it out of reach of the children.

CAUTION
Carefully protect the environment when disposing of used gasoline. We suggest that sent to the wasted product station after the sealed container. Don’t pour the used gasoline to the dustbin or soil and sewer. Keep level position can quickly and thoroughly drain gasoline out when the engine is hot.

Technical Data

• Displacement: 196cc/4stroke
• Horsepower: 6,5hp
• Delivery: 14-22L/min
• Pressure: 25-40bar

Operation

Preparation And Check Before Operation

NO MACHINE OIL IN THE ENGINE, PLEASE FILL THE MACHINE OIL IN!

Check engine oil level:
Unscrew the oil dipstick to check whether the engine oil is within the range of the specified limit. If the oil level is too low, add the engine oil from the filling hole to the specified height. Using different brands of engine oil will vary according to the environment temperature. Our recommended engine oil is SAE 10W-30.

1. Oil Dipstick Hole
2. Highest Oil level
3. Lowest Oil Level

Check fuel level:
Open the fuel tank cover and check the fuel level. If the level is too low, add the fuel from the filling hole till the oil level reaches the red stop plate inside of the strainer. Our recommended fuel brand is standard gasoline (unleaded gasoline is standard). Do not mix the gasoline with the engine oil. Do not use gasoline with foreign materials.

Fuel tank 2. Hole 3, Red basic line for upper fuel level

Check air cleaner
Air cleaner has two types semi-dry and oil bath. Check whether the air cleaner is clean and the foam shall be free from dust. First using an oil bath air cleaner, filling the clean machine oil level (oil level marked on the outer case of the oil bath air cleaner) should be flushed with the oil level of the air cleaner outer case. Clearly see safety and warning appliqué before starting.

1. Butterfly nut,
2. Air cleaner cover,
3. Butterfly nut
4. Paper filter-element,
5. Foam filter element,
6. Gasket
7. Cleaner base plate.

Starting the Engine

• Open the throttle switch, close the choke, and adjust the throttle valve to the proper position, first, slightly pull the starting handle till feeling a little resistance, then pull forcefully to start the gasoline engine.
• After starting, let the engine run for 1-3 minutes at idle speed, meanwhile, check the engine’s working condition whether it runs stably or smoothly and if there is any abnormal noise, then open the choke to maximum and adjust the throttle opening to obtain the required speed. To the present, the starting process is completely over.

1. Throttle Switch
2. Open Position of the Throttle Switch
3. Drain plug
4. Pulling Cable Assembly
5. Choke
6. Set choke to the off position

Stopping the engine

When running the engine, keep yourself far away from the muffler and don’t face the exhaust outlet for your health. Pay attention to the abnormal state of the engine in the running. If finding an abnormal sound, grate vibration, serious traveling, firing a gun, etc. stop the engine at once.

CAUTION
Urgency stopping engine: Set the stopping switch to OFF position or directly pull out the spark plug. Correct stopping the engine is: First remove load, idle run 2-3 minutes, then, set the stopping switch to OFF position or directly pull out the spark plug, the machine will stop at once.

CAUTION
Don’t directly stop the engine without removing the load in normal conditions.

1. Throttle Switch handle
2. Close position of the throttle Switch
3. Carburettor Drain Bolt

Adjustment of the gasoline engine

Each gasoline engine has been strictly tested and inspected in our factory, general, the machine can normally run without any adjustment. After operating some time, adjust to gasoline engine as the following procedure if necessary:

• Adjust the valve gap: intake valve gap: 0.10-0.15mm; exhaust valve gap: 0.15 0.20mm. a. Grasp valve gap adjusting nut and release valve lock nut. b. Turn valve gap adjusting nut to the specified gap. C. Grasp valve gap adjusting nut and screw up valve lock nut. Torque: 10N.m (1.0kg.m) d. After screwing up the valve lock bolt, recheck the valve gap.
• Adjust the governor system (big and small tension spring, throttle support, and throttle governor lever)
  • Remove the fuel tank.
  • Screw off the lock nut and move the throttle support to completely open the valve.
  • After moving the throttle support, opening the valve, and turning the throttle governor lever in the same direction to a farther-most position where it can reach, screw up lock nut. Check if throttle support and valve move smoothly. e. Install the fuel tank.

Throttle Governor Lever

Notes of unpacking
Carefully make the gasoline engine in normal condition when unpacking. Carefully check whether they are completed according to the packing list. Our company provides gasoline engines with fine quality, environment, performance and cost ratio high. If you have any questions about the operation, please consult with a local dealer or directly telephone our after-sale service center.

CAUTION
Don’t disassemble the gasoline engine by yourself within the warranty period! (If disassembling by the user, can’t join war-rant certification).

Maintenance

Everyday maintenance:

• Check the filter element of the air cleaner and remove the dirt and foreign materials to keep the element clean.
• Check the fastening nuts whether are tightened.
• Check the lubrication Oil level and whether it is kept within the specified range. After the engine runs for about 25 hours, the air cleaner should be cleaned. After the engine runs for about 50 hours, the spark plug must be checked, remove its carbon deposits, and adjust its gap to 0.7-0.8mm.

1. remove the spark plug
2. and adjust the spark plug gap1

Check radiating fin and remove the dirt among them. Replace the lubrication oil, unscrew the drain plug, tilt the engine slightly and let the lubrication oil drain out, add the kerosene to clean, and then drain it out, finally, tighten the drain plug and fill in the new lubrication oil to the specified oil level. CAUTION: Add correct oil brand, the filling volume for 160F 168FA/B is 0.61,,for 173F, 177F, 182F and I88F is 1.1L.

1. Oil drain plug
2. Fill oil hole
3. Specified oil level

After every 100 hours of running, the fuel tank and filter strainer must be cleaned. Open the fuel tank cover, take out the filter strainer and clean it with a brush. Take off the fuel tank, clean the inside of the tank, and remove the dirt and water attached to the internal surface of the tank. Reassemble the tank and fit the strainer, then fill in new fuel oil till the oil level reaches the red basic line.
After running every two years, check the aging condition of the oil tube. If there is any aging, hardening, or crack, it must be replaced. Tighten the replaced oil tube joints and check their leakage.

Maintenance before stopping use for a long time
For some reason, if the engine is not used for a long time, it must be maintained one time before is stored: Take off the fuel tank, drain out all fuel and clean the dirt and water inside of the tank. Open the fuel cock, unscrew the drain plug at the bottom of the carburetor, drain out the fuel in the carburetor thoroughly, and then, screw the drain plug to its original position. B Unscrew the drain plug at the bottom of the crankcase and drain out the lubrication oil in the crankcase thoroughly, then tighten the drain plug. C Clean the outer surface of the gasoline engine with clean cotton, remove the dirt and dust, etc., then store the gasoline engine in a clean and dry place that is in good ventilation condition. D Turn the crankshaft and make the gasoline piston stop at the upper limit position in order to avoid ai entering in. Disposing of wasted oil: Please use a special container to collect wasted oil from the gasoline engines and send it to the local wasted oil station for disposal. Don’t pour everywhere.

Transportation & Storage

Lightly handle the loading and unloading, keep upright, and don’t incline. Strictly prohibit bumping and protect from drenching in the transportation. The gasoline engine should be stored in a clean, ventilating, moisture-proof, and damp-proof place. If storing the engine for a long time:

1. Store the gasoline engine in a clean, ventilating, moisture-proof, and damp-proof place.
2. Drain the fuel completely out of the machine (including machine oil in the oil bath-type air cleaner).

Troubleshooting

Problem| Cause| Solution|
---|---|---|---
No spark at the spark plug| Spark Plug| Spark Plug deposit existing. Spark plug gap too big or too small

Spark plug insulator damaged

| Clear Deposit Adjust to 0.7-0.8 Renew spark plug|
Other|
Igniter damaged Flywheel magnetic force week|
Renew igniter Renew flywheel|
Having spark at the spark plug| Compressing fine| Cylinder fuel too much Fuel poor, having water or dirt| Screw out the spark plug, dry and screw in.

Renew fuel

|
No gasoline flowing out after screwing off drain screw at the bottom of the carburet- tor.| Pin valve blocked| Wash or renew carburettor|
Supplying oil normal, but compressing poor.| Piston ring worn Spark plug loosen

Cylinder head leaking, valve

gap or timing wrong

| Renew

Screw in tightly

Clear, reinstall or readjust

|
Igniting and supplying gaso- line normal| High voltage cable contacting with spark plug poor.

Stopping switch malfunction or short circuit.

Machine oil alarm damaged.

| Eliminate and correct Eliminate

Renew

|
Speed or power insufficiency| Choke no opening

Muffler Ventilation is poor Moving parts are worn Governor kit not to reach optimum balance

Igniting energy too low Valve gap too big

Cylinder head existing carbon

deposit

|  | Open the choke Renew the muffler Check or replace Adjust the governor kit

Renew the igniter or renew the flywheel.

Adjust to specified range Clear the carbon deposit.

|
Speed weaving too big| Governor kit no to reach optimum matching state Wrong carburetor

Spark plug gap not correct

|  | Adjust the governor kit Renew the carburetor Adjust the gap|
Speed too high| Governor bar nto pressing the governor slider tight or governor slider off.|  | Readjust or assemble the governor slider.|
Abnormal sound| Wrong the valve gap Cam gear is damaged|  | Adjust the valve gap Renew the camshaft|
Carburetor leakage| Pin valve sticking with dirt|  | Lightly tap carburetor or

clean

|
O-Ring deformed|  | Renew|

Pump

Description

Operation Instructions

1. Check every fastener and make sure that the sprayer and
2. Set the two pulleys in a straight line, and the belt in an appropriate tightness.
3. Every joint of the hoses must be tightened to prevent horn leaking.
4. Before starting the motor, shut off the Valve. Loosen the pressure Adjusting Screw and pull the Pressure Adjuster to the top.
5. Start the motor to power the sprayer, and keep a proper revolution. Press the pressure Adjuster to the bottom. Keep the pressure around 21-35Kgs by adjusting the Pressure Adjusting Screw.
6. Open the Valve to start spraying.
7. After the spraying is over, pull the Pressure Adjuster to the top and operate the sprayer with fresh water to clean out the remaining chemicals.

Pump Lubrication

1. Replace the engine oil after the sprayer has been used for the first 10 hours, 50 hours, and thence every 70 hours.
2. Drain away the dirty engine oil by screwing off the Drain Plug.
3. After the Drain plug is screwed on, remove the oil Inlet Cover and refill # 30-40 fresh engine oil.
4. Keep the oil level at 2/3 of the oil Glass.
5. Always fill the Grease Cups with grease. Screw on the Grease Cups 2-3 cycles every 2 hours of spraying.

Trouble Shooting
Feeding Failure & Pressure Instability.

1. Check whether the Suction Hous is leaking or is stuck.
2. Open the valve to release the surplus air.
3. Remove the suction Chamber and the Water Outlet Chamber and check if the Valve Assembly is stuck or damaged.

Cylinder Leakage

1. Remove the Dust-proof Cover and wind up the Adjusting Rings.
2. If still in vain, replace the V – packings in the Cylinder.

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