Nakayama PS3100 Manual page 15

EN
Warning: Make sure that the engine has stopped and is cool before performing any service to the machine. Contact with moving cutting head or hot muffler
may result In a personal injury.
Air filter (Z1)
The air filter, if clogged, will reduce the engine perfor mance. Check and clean the filter element in warm, soapy water as required. Dry completely before
installing. If the element is broken or shrunk, replace with a new one.
(1) Air filter
Fuel filter (Z2)
When the engine runs short of fuel supply, check the fuel cap and the fuel filter for blockage.
(1) Fuel filter
Spark plug
Starting failure and misfiring are often caused by a faulty spark plug. Clean the spark plug and check that the plug gap is in the correct range. For a re placement
plug, use the correct type specified by your supplier.
Important: Note that using any spark plug other than those des ignated may result in the engine failing to operate prop erly or In the engine becoming over-
heated and dam aged.
To install the spark plug, first turn the plug until it is finger tight, then tighten it a quarter turn more with a socket wrench.
Tightening torque: 9.8-11.8 Nm.
Muffler
Warning: Inspect periodically, the muffler for loose fasteners, any damage or corrosion. If any sign of exhaust leakage is found, stop using the machine and have
it repaired immediately.
Note that failing to do so may cause the engine to catch fire.
Intake air cooling vent (Z4)
Never touch the cylinder, muffler, or spark plugs with your bare hands immediately after stopping the engine. The engine can become very hot when in oper-
ation, and doing so could result in severe burns.
When checking the machine to make sure that it is okay before using it, check the area around the muffler and remove any wood chips or leaves which have
attached themselves to the brush-cutter. Failling to do so could cause the muffl er to become overheated and that in turn could cause the engine to catch on
fire. Always make sure that the muffler Is clean and free of wood chips, leaves, and other waste before use.
Check the Intake air cooling vent and the area around the cylinder cooling fins after every 25 hours of use for blockage, and remove any waste which has at-
tached Itself to the brushcutter. Note that It Is necessary to remove the engine cover In order to be able to view the upper part of the cylinder.
Important: If waste gets stuck and causes blockage around the intake air cooling vent or between the cylinder fins, it may cause the engine to overheat, and
that in turn may cause mechanical failure on the part of the brushcutter.
(1) Cylinder
(2) Intake air cooling vent (back)
Procedures to be performed after every 100 hours of use
1. Remove the muffler, insert a screwdriver into the vent, and wipe away any carbon build-up. Wipe away any carbon build-up on the muffler exhaust vent and
cylin der exhaust port at the same time.
2. Tighten all screws , bolts, and fittings.
3. Check to see if any oil or grease has worked its way in between the clutch lining and drum, and if it has, wipe it away using oil-free, lead-free gasoline.
Refilling trimming line (Z6)
1. For replacement line, use a diameter of 2.4mm ( .095in).
The spool is capable for a line up to 6m (20ft) on the 10cm head. Avoid using a larger line as it may cut down the trimming performance.
Warning: For safety reasons, do not use metal reinforced line.
2. Pinch the slotted area on the both sides of the spool housing to unhook the bottom cap.
3. Remove the spool and remove the old thread. Divide the thread and pass it to the point where the slit in the spool is.
4. Wind up the line in the correct direction as indicated on the spool.
5. Hook each end of the line in the slot on the edge of the spool, and then put the ends through the eyelets on the housing. Make sure that the spring and the
washers are in place.
6. While holding the spool against the housing, pull the line ends to release them from the slot.
7. Line up the slot on the bottom cap with the hook on the housing , press the cap against the housing until it clicks.
Angle transmission (Z14)
The reduction gears are lubricated by angled transmission grease in the angle transmission. Apply new grease every 25 hours of use or more often depending
on the job condition.
Remove the cutter holders before installing new grease to arrange for old grease to exit.
Blades (Z15)
When refilling the tank or resting, it is often a good idea to use the time to oil the cutting blades.
If a gap exists between the upper and lower blades, follow the procedure below to adjust them so that they fit more closely together.
(1) Upper Blade, (2) Lower blade
1. Loosen lock nut (A) as shown in the diagram.
2. Tighten screw (B) fully, and then turn one-third to one half of a rotation backward.
3. While holding onto the screw to keep it in position, tighten the lock nut.
4. Check to make sure that the flat washer (C) is loose enough so that it may be turned by pressing on it with a finger.
Note: Screwing in the screw too tightly may make it impossible for the blades to move. Conversely, not screwing in the screw tightly enough may make the
blades of the trim mer feel dull and cause leaves and branches to become caught in the blades of the trimmer.
15
WWW.NAKAYAMATOOLS.COM