Nakayama PS3100, Manual

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Chain oil lube

Use an appropriate chainsaw chain lube.

Note: Do not use wasted or regenerated oil that can cause damage to the oil pump. 

Fuelling the unit

1. Untwist and remove the fuel cap. Rest the cap on a dustless place.

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2. Put fuel into the fuel tank to 80% of the full capacity.

3. Fasten the fuel cap securely and wipe up any fuel spillage around the unit.

Operation (P)

(1) Stop switch 

5. Set the stop switch to the ‘‘ -  ‘‘position. Set the throttle trigger to the start position (1 - 2 - 3).

Place the unit on a flat, firm place.

Keep the cutting head clear of everything around it. 

6. Press the primer bulb several times until the overflow fuel comes into the transparent tube. 

Warning: The product is equipped with a centrifugal clutch mechanism, so the cutting attachment begins to ro tate as soon as the engine is started by putting 

the throttle into the start position. When starting the en gine, place the product onto the ground in a flat clear area and hold it firmly in place so as to ensure 

that neither the cutting part nor the throttle come into contact with any obstacle when the engine starts. 

Important: Avoid pulling the rope to its end or returning it by re  leasing the knob. Such actions can cause starter fail ures. 

7. Move the choke lever downward to open the choke and restart the engine (Q).

(1)Choke lever (2) Close  (3) Open

8. Allow the engine to warm up for a several minutes before starting operation. 

Note: 1.  When restarting the engine immediately after stop ping it, leave the choke open.

2. Over-choking can make the engine hard to start due to excess fuel When the engine failed to start after several attempts, open the choke and repeat pulling 

the rope, or remove the spark plug and dry it.

Stopping the engine

1. Release the throttle lever and run the engine for half a minute.

2. Shift the stop switch to the STOP position. 

Important: Except for an emergency, avoid stopping the engine while pulling the throttle lever.

When it doesn’t stop at the stop switch, move the choke level to the closed position. 

Adjusting the throttle cable (R) 

The normal play is 1 or 2mm when measured at the carburettor side end. Readjust the cable adjuster as required

(1) Cable adjuster

Adjusting the idling speed (S)

(1) Idle adjusting screw

1. When the engine tends to stop frequently at idling mode, turn the adjusting screw clockwise.

2. When the cutting head keeps rotating after releasing the trigger, turn the adjusting screw counter-clockwise.

Note: Warm up the engine before adjusting the idling speed. 

Warning: The cutting head will start rotating upon the engine starts.

Feed fuel into the fuel tank and tighten the cap securely (T), (U).

(1) Fuel  (2) Chain oil

2. Rest the unit on a flat, firm place. Keep the cutting head off the ground and clear of surrounding objects, as it will start rotating upon starting of the engine.

3. Push the primer several times until overflown fuel comes out in the transparent tube. 

4. Move the choke lever to the closed position | \ |. 

Cutting (line head)

Warning:  1. Always wear eye protection such as safety goggles. Never lean over the rotating cutting head. Rocks or other debris could be thrown into eyes and 

face and cause serious personal injury.

2. Keep the cutting attachment guard in place at all times when the unit is operated.

Trimming Grass and Weeds

Always remember that the TIP of the line does the cutting. You will achieve better results by not crowding the line into the cutting area. Allow the unit to trim 

at its own pace.

1. Hold the unit so the head is off the ground and is tilted about 20 degrees toward the sweep direction.

2. You can avoid thrown debris by sweeping from your left to the right.

3. Use a slow, deliberate action to cut heavy growth.

The rate of cutting motion will depend on the material being cut. Heavy growth will require slower action than will light growth.

4. Never swing the unit so hard as you are in danger of losing your balance or control of the unit.

5. Try to control the cutting motion with the hip rather than placing the lull workload on the arm and hands.

6. Take precautions to avoid wire, grass and dead, dry, long-stem weeds from wrapping around the head shaft. Such materials can stall the head and cause the 

clutch to slip, resulting in damage to the clutch system if repeated frequently.

Adjusting the line length

Our brush cutters are equipped with a semi- auto type nylon line head that allows the operator to ad vance the line without stopping the engine. When the line 

becomes short, lightly tap the head on the ground while running the engine at lull throttle.

Each time the head is ped, the line advances about 25.4mm For better effect, tap the head on solid ground or hard soil. Avoid ping in thick, tall grass as the 

engine may stall by overload.

EN

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