NAKAYAMA MB7005 Gasoline Cultivator User Manual

NAKAYAMA MB7005 Gasoline Cultivator

Safety warnings

1. Please read carefully the operation manual before using the machine. Make sure to get familiar with the methods of operation of this machine and its controls. Understand how to immediately terminate the operation of the machine.
2. Children are not allowed to use this machine! No adult is allowed to use the machine before reading carefully the manual!
3. Ensure no other persons or things with potential safety risks, especially children and pets, are within the working area!

Preparation

1. Check thoroughly the working area and remove all obstacles that when interfered could lead to an accident.
2. Before starting the engine, always place put the gear shifting handle in a neutral position!
3. Don’t operate the machine without wearing proper clothing. If the working area ground is slippery, wear a pair of anti-skid shoes to improve your standing stability.
4. Take care when treating fuel, which is inflammable! Pay attention to the following rules:
   • a) Use an appropriate container to hold the fuel.
   • b) When the engine is running or is hot, never attempt to refuel it.
   • c) Take extra care when refueling the engine outdoors; never try to fuel the engine indoors!
   • d) Before starting, tighten the fuel tank cap and wipe off any fuel spilled out!
5. Never try to make any adjustments while the engine is running!
6. Always wear safety glasses when making any adjustments on the machine, for example, preparation and maintenance of the machine.

Operation

1. When starting the engine, the shift lever should always be placed in the neutral position. Keep a safe distance from all moving parts of the machine.
2. When operating the machine on (or while crossing) cobbled roads, sidewalks, or highways, stay alert to the traffic conditions to notice any potential traffic risk! Never use the machine to carry any passenger!
3. If the machine bumps against any obstacles, please turn off the engine immediately, and thoroughly check whether the machine has been damaged, if so, repair it before restarting and operating it.
4. Always pay attention to the surrounding conditions to avoid slipping down, or dropping.
5. If the machine produces abnormal vibrations, turn off the engine immediately! Try to identify the fault, it’s important because abnormal vibration normally is a harbinger of fault.
6.  Before leaving the operating position to repair, adjust, check or remove things jammed between blades, always remember to shut off the engine first!
7.  If the machine is to be left uncared by the operator, all necessary preventive measures, such as disengaging the power output shaft, lowering accessory devices, shifting to the neutral position of the gear shift lever, and shutting off the engine shall be taken first!
8.  Before cleaning, repairing, or checking the machine, the operator must shut off the engine and ensure all moving parts are in a stationary state!
9.  The engine’s emission is hazardous, so never try to run it indoors!
10. Never operate the mini tiller without proper protective equipment, guard, or other protection devices in place!
11. When the machine is running, always keep it away from children and pets!
12. Never overload the machine with a big tilling depth and a high speed!
13. The machine is not allowed to run at a high speed on a slippery road. Watch back to take care when driving backward!
14. Never allow any looker-on to approach a running machine!
15.  Only the accessory devices and equipment (like the counterweight) allowed by the manufacturer of the mini tiller may be used
16.  Never try to operate the mini tiller when the view is limited or lighting conditions are poor!
17.  Take care when tilling a hard field, because the blades may hook into the ground, hence pushing the mini tiller forward. If such a result does occur, just let free the handle and don’t try to control the machine!
18.  Never operate the mini tiller on an abrupt slope!
19.  Take care not to let the machine turn over when it is ascending or descending a slope!

Repair, maintenance, and storage

1.  Check at a fixed interval whether bolts under shear stress, mounting bolts of the engine, and other bolts are tightened properly, so as to ensure the machine can work safely.
2.  The machine shall be stored indoors and away from flames, and please cool the engine before storing it.
3.  If the mini tiller is to be stored for a long time, the manual shall always be kept as an important material.
4.  Don’t repair the machine at will unless you have the proper tools and the manual to instruct disassembling, assembling, and repairing of the machine.

Safety symbols
The following symbols are to remind you that if you don’t pay attention, you might be severely injured. Please carefully read the symbols and notices about safety in the manual. If these symbols peel off or are illegible, please contact the distributor to replace such symbols.

Technical Data

• Displacement/Engine type: 212cc/4-stroke
• Horsepower: 7hp
• Tyre dimensions: 424222cm
• Working width: 110cm
• Oil tank capacity: ~700ml
• Engine/Transmission Oil type: SAE20w50
• Transmission oil capacity: 2L
• Tiller tines: 12+12

Main parts

1. Gear shifting handle
2. Handlebar adjusting handle
3. Throttle lever
4. Clutch lever
5. Reverse gear lever
6. ON/OFF switch
7. Oil tank cap/oil tank filling port
8. Fuel tank
9. Fuel tank cap
10. Recoil starter rope
11. Air filter box
12. Fuel switch
13. Choke lever
14. Reverse gear safety lever
15. Toothed joint
16. Drag bar
17. Transmission oil cap
18. Horizontal adjustment handle

Main functions and initial settings

Caution! The knives are placed on both sides of the drive shaft. Make sure you tighten the shaft properly and the knives using the appropriate screws.

Assembly

1.  Attaching the wheels: Attach the rear (inner) side of the wheels to the shaft plate using the four provided screws. Support the tiller and place the drive wheels on the hexagon shaft of the machine, making sure that the shaft holes are on the same side of the hexagon, as the drive shaft holes on the drive shaft. Then insert the long M8 screws (or safety pins) and nuts M8 into the holes and tighten them well.
2.  Attaching the steering handlebars: place the handlebars on the tiller by joining the toothed sections of the joint (15) together. Then install the handlebar adjusting handle(2) and its accessories, and adjust the height of the steering wheel according to your height and the requirements of each application. Adjust the position of the steering handlebar to the left or right with the help of the Horizontal adjustment handle (18).
3.  Placing the wheel covers (bumpers): first place the support frames on the tiller. The two small bases are placed on the front of the tiller’s main body, at the point where the engine is supported. The larger base is placed on the back of the tiller, above the drag bar. Place the two covers on top of the bases on the respective sides (right-left) and screw them with the screws provided in the package.
4.  Connecting the gear shifting lever: Connect the lever to the connection point and secure it with the provided safety pin.

Installation and adjustment of the control cables

1. Clutch cable wire:
   Tighten the nut on the regulator screw so that the wire is as long as possible. Screw the retractor screw on the clutch arm to the end of its rotation. Then press the clutch arm and pass the wire into the hole just below them as you can see in the photo.  Caution! The component where the wire is placed should be placed with the large hole down so that the end of the wire (barrel) is fixed inside its hole. Unscrew the clutch regulator so that the lever has an inactive path about 3cm before engagement and then tighten the regulator nut.

2. Reversing cable (reverse gear)
   Relax the nut on the regulator screw. Screw fully the retoucher screw to the end of its rotation. Insert the end (barrel) of the cable to the reversing arm. Push the reverse arm upwards and insert the cable and the casing of the cable through the slit of the regulator.

Check and add engine oil and gearbox oil

1.  Check that all screws and connectors are installed correctly and that they are tightly fastened.
2.  Check that the handles on the operating system are positioned correctly. If they are not in the correct position, adjust them as needed.
3.  Place the gear lever in the neutral position (N).

For safety reasons, the machine may be delivered without engine oil and gearbox oil. Fill SAE20w-50 oil in the engine oil tank until the level is at the top edge of the hole and in the gearbox taking care that the level does not exceed the top line of the indicator, the indicator, and the oil port (17) is on the right side of the machine as observed from the operator’s control position. Gearbox oil capacity: ~ 2 liters. Place the machine on a flat surface, and add oil through the engine oil port (7). The amount of oil should be ~ 700ml. Check the oil level with the help of the oil indicator. Check the level before each use. Choose the right engine oil type depending on the conditions and temperature of the environment. We recommend SAE20w-50 oil for gasoline engines.
Caution! The oil level should always be at the ceiling.

Starting the engine
Useful tips for starting the engine

1. Carefully read the engine starting instructions.
2. You should let the machine run without any load for about 2-3 minutes at idling speed.
3. Check that the machine is operating normally. If not, turn it off and check.
4. Make sure the gear lever is in the neutral position.

Safety tips on engine operation
Caution! Exhaust fumes and vapors may contain poisonous substances.

• Do not operate the machine indoors.
• Do not smoke during refueling.
• Caution! Be careful not to spill fuel during refueling.
• Stop the machine before refueling.
• Keep children at a safe distance.
• Keep the machine at least 1 meter away from any flammable objects.

Figures 3 and 4: Just above the clutch lever, a safety mechanism (safety lever) is placed. When starting the tiller, the safety lever must be secured in the closed position with the help of the special metal safety (to be pressed and secured, as shown in Figure 4). The safety lever is automatically unlocked as soon as it is pressed.

Engine starting instructions
Caution! During the start-up process, the gear levers must be in the neutral position (N).

1. Turn the fuel switch to the ON position.
2. Turn the ON / OFF switch to the ON position.
3. Turn the chuck lever to the closed position (chuck in operation).
4. Pull the recoil starter handle until you feel slight resistance and then pull hard.
5. Turn the chuck lever to its original position (chuck inactive).
6. Set the throttle lever (throttle) to the required speed.

Turning the engine off

1. Set the gear lever in the neutral position.
2. Reduce the engine speed with the throttle lever.
3. Turn the engine off by turning the ON / OFF switch to the OFF position

Operating instructions

Low speed – 1st slow
Press the clutch lever with your left hand. Pull the gear lever backward with your right hand and check that it is set at low speed. Release slowly the clutch lever.

High speed – 2nd fast
Press the clutch lever with your left hand. Pull the gear lever backward with your right hand and check that it is set at high speed. Slowly release the clutch lever.

Reverse gear (Reverse)
To engage the reverse gear:

1. Make sure the gear levers are in the neutral position (N).
   Caution! Its speed cannot be reversed unless the gear lever is set first on the neutral gear.

2. Press and hold the clutch lever.

3. Press and hold the reverse lever while pressing the lever safety mechanism.

4. Slowly release the clutch lever while holding the lever back.

To disengage the reverse gear:

1. Slowly release the gear shifting lever.
2. Hold down the clutch lever.
3. Put the gear lever on the dead.
4. Release the clutch.
   Caution! Speed shifting should only be done when the machine is stationary

Stopping work
Hold down the clutch lever, place the lever on the neutral (N), and release the clutch slowly.
Connecting the components

1. Connecting the knives: Remove the wheels and place the knives on the drive shaft. Make sure you place the knives correctly on both sides of the shaft. After placing the knives, place the bumpers (wheel covers) to avoid any injury that may be caused by the knives.
2. For moist soils: When the depth of wet soil is less than 25cm you can dig with curved knives. When the depth is 25-40cm you should use regular knives.
3. To connect the groove, you must first remove the working depth regulator and replace the groove by adjusting its depth and height.

Maintenance

Due to the way the digger works and the vibrations created, the screws and fittings can loosen or even wear out during operation. These changes can affect the function of the digger and cause damage to the digger. In order to reduce the wear of your digger, inspections of the digging sections should be carried out frequently and proper maintenance should be carried out. This way the digger will have the best possible performance and longer life.

1. When a digger is new or has undergone significant repairs it should not operate for more than one hour with a large load. After 5 hours of use, you must empty the oil from the engine and gearbox and install a new one. Then let the machine work for 3-5 minutes at idle to clean well. Refuel and inspect the machine every 4 hours. With the above actions, the machine will operate at optimal performance for quite some time.

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.

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