CHAINSAW OWNER’S MANUAL MODEL: DS4016CS Caution: Before using our chain saw, please read this manual carefully to understand the proper use of your unit. Keep this manual available for reference at all times.
OWNER’ S MANUAL SAFETY FIRST Instructions contained in warnings within this manual marked with a symbol concern critical points which must be taken into consideration to prevent possible serious bodily injury, for this reason you are requested to read all the instructions carefully and follow them without failure. NOTES ON TYPES OF WARNINGS IN THE MANUAL △ WARNING ！ This mark indicates the instructions must be followed to prevent accidents which could lead to serious bodily injury or death.
Owner’s Manual 1.WARNING LABELS ON THE MACHINE a. Read owner's manual before operating this machine b. Wear head, eye, and ear protection c. Use the chain saw with two hands d. Warning! Kickback danger e. Warning/Attention △ WARNING ！ Never remodel the product. We won’t warrant the machine if you use the remodeled product or you don’t observe the proper usage written in the manual.
OWNER’ S MANUAL 2. SYMBOLS ON THE MACHINE For safe operation and maintenance, symbols are carved in relief on the machine. Per these indications, please be careful not to make a mistake. a. The port to refill the “Mixed Gasoline”. b. The port to refill the “Chain Oil”. I O c. Flipping the engine switch to “O” direction will stop the engine. d. Pulling out the choke knob closes the choke. e. “MIN” direction - the oil flow decreases. “MAX” direction - the oil flow increases. f.
Owner’ s Manual 3. SPECIFICATIONS Name Chain Saw Type Single cylinder, air cooled, two stroke Model DS4016CS Displacement（cc） 40 Max. Power/Speed 1.2/8500 （kW/r/min） Ignition System Pointless(CDI) Carburetor Diaphragm Start Mode Recoil Starting Spark Plug BPMR7A 、 RCJ6Y 、 L6RTC Spark Plug Gap（mm） 0.6~0.7 Fuel Mixture (40:1) Lubricating Oil FC Chain Oil Bar & Chain Oil Fuel Tank Capacity（oz.） 10.48 Oil Tank Capacity（oz.） 7.10 0.7 Sprocket（Teeth×Pitch） Guide Bar Size 6T×0.
OWNER’ S MANUAL 4.SAFETY PRECAUTIONS BEFORE USING THE MACHINE a. Read this owners manual carefully to understand how to operate this unit properly. b. You should never use the product when under the influence of alcohol, when suffering from exhaustion or lack of sleep, when suffering from drowsiness because of having taken cold medicine, or at any other time when a possibility exists that your judgment might be impaired or that you might not be able to operate the machine properly and in a safe manner. c.
Owner’ s Manual WARNING CONSIDERING HANDLING OF FUEL a. The engine of this product is designed to run on a mixed fuel which contains highly flammable gasoline. Never store cans of fuel or refill the fuel tank in any place where here is a boiler, stove, wood fire, electrical sparks, welding sparks, or any other source of heat or fire which might ignite the fuel. b. Smoking while operating the product or refilling its fuel tank is extremely dangerous.
OWNER’ S MANUAL WHEN OPERATING THE ENGINE a. Keep the handles dry, clean, and free of oil or fuel mixture. b. Never touch the muffler, spark plug, or other metal parts of the engine while the engine is in operation or immediately after stopping the engine. Doing so could result in serious burns or electrical shock. c. Use extreme caution when cutting small size brush and saplings because slender material may catch in the saw chain and be whipped toward you or pull you off balance. d.
OWNER’ S MANUAL 5.INSTALLING GUIDE BAR AND SAW CHAIN A standard saw unit package contains the items as illustrated (1) power unit (2) Bar protector (3) Guide bar (4) Saw chain (5) Plug wrench (6) Hexagon wrench Open the box and install the guide bar and the saw chain on the power unit as follows: a. Loosen the nuts and remove the chain cover. b. Gear the chain to the sprocket, while fitting the saw chain around the guide bar, mount the guide bar to the power unit.
OWNER’ S MANUAL 6.FUEL AND CHAIN OIL FUEL △ WARNING ！ a. Gasoline is very flammable. Avoid smoking or bringing any flame or sparks near fuel. Make sure to stop the engine and allow it cool before refueling the unit. Select outdoor bare ground for fueling and move at least 3m away from the fueling point before starting the engine. b. Please use an anti-oxidant added quality oil expressly labeled for air-cooled 2-cycle engine use. (JASO FCGRAD OIL or ISO EGCGRADE) c.
Owner’ s Manual FUELING THE UNIT a. Untwist and remove the fuel cap. Rest the cap on a dustless place. b. Put fuel into the fuel tank to 80％ of the full capacity. c. Fasten the fuel cap securely and wipe up any fuel spillage around the unit. △ WARNING ！ a. Move at least 10feet (3meters) away from the fueling point before starting the engine. b. Stop the engine before refueling the sufficiently agitate the mixed gasoline in the container. FOR YOUR ENGINE LIFE, AVOID: a.
Owner’ s Manual 7. OPERATING Starting the engine 1. Fill fuel and chain oil tanks respectively and tighten the caps securely. 2. Put the switch to “I” position. 3. Push the choke knob upward. The choke will close and the throttle lever will then be set in the starting position. ⑴ Chain oil ⑵ Fuel ⑶ Switch ⑷ throttle lever ⑸ Throttle interlock ⑹ Choke knob （2） （1） Note When restarting immediately after stopping the engine, leave the choke knob at the open position.
Owner’ s Manual ADJUSTING CARBURETOR The carburetor on your unit has been adjusted by the factory, but may require fine turning due to change in operating conditions. Before adjusting the carburetor, make sure that provided are clean air/fuel filters and fresh, properly mixed fuel. When adjusting, take the following steps. a. Stop engine and screw in both H and L needles until they stop. Never force. Then set them back the initial number （2） of turns as show below.
OWNER’ S MANUAL 8.SAWING △ WARNING ！ a. b. It is not necessary to force the saw into the cut. Apply only light pressure while running the engine at full throttle. When the saw chain is caught in the cut, do not attempt to pull it out by force, but use a wedge or a lever to open the way. GUARD AGAINST KICKBACK This saw is equipped with a chain brake that will stop the chain in the event of kickback if operating properly.
OWNER’ S MANUAL Bucking and Limbing △ WARNING ！ a. Always ensure your foothold. Do not stand on the log. b. Be alert to the rolling over of a cut log. Especially when working on a slope, stand on the uphill side of the log. c. Follow the instructions in this manual to avoid kickback of the saw. A log lying on the ground Saw down halfway, then roll the log over and cut from the opposite side.
OWNER’ S MANUAL 9.MAINTENANCE △ WARNING ！ Before cleaning, inspecting or repairing your unit, make sure that engine has stopped and is cool. Disconnect the spark plug to prevent accidental starting. MAINTENANCE AFTER EACH USE a. Air Filter To clean dirt in the meshes, split the cleaner into halves and brush in gasoline. When using compressed air, blow from the inside. b. Oiling port Dismount the guide bar and check the oiling port for clogging. (1) Oiling port c.
Owner’ s Manual SERVICE POINTS a. Cylinder fins Dust clogging between the cylinder fins will cause over heating of the engine. Periodically check and clean the cylinder fins after removing the air cleaner and the cylinder cover. Cylinder fins Note Be sure to block the air intake hole. b. Fuel filter a. Using a wire hook, take out the filter from the filler port. b. Disassemble the filter and wash with gasoline.
OWNER’S MANUAL 10. MAINTENCE OF SAW CHAIN AND GUIDE BAR △ WARNING ！ It is very important for smooth and safe operation to keep the cutters always sharp. a. Your cutters need to be sharpened when: Sawdust becomes powdery/fine. You need extra force to saw in. The cut line does not go straight. Vibration increases. Fuel consumption increases. b. Cutter setting standards: Make sure the saw chain is held securely. Make sure the engine is stopped. Use a round file of proper size for your chain.
Owner’ s Manual 11. STORAGE If the chain saw isn’t going to be used for a long time, maintain as follows: 1) Remove the fuel, the chain oil in the tank, and in the carburetor. 2) Take off the spark plug, add a small amount of oil down the spark plug hole into the cylinder, and pull the starter 2~3 times to move the piston to the top dead center, then replace the spark plug.
Owner’s Manual 2) Lack of Power Description Cause 1) Clogged element 2) Air penetration from carburetor joint 3) Faulty fuel 4) Engine overheating Compression is normal and no misfire Countermeasure Clean Tighten Replace Cool down, avoid long time operation in high speed or overloading 5) Muffler choked with carbon Clean 6) Carbon deposited on the exhaust port of cylinder Clean 1) Fuel too lean 2) Carbon deposited in the cylinder Overheating Abnormal knocking sound 3) Poor lubrication 4) Clogging
Owner’s Manual 3) Stop during operation Description Cause Countermeasure File the cylinder and piston, Stop abruptly Stop gradually 1) Piston burn out replace the piston ring 2) Short circuit of spark plug electrodes Clean 3) Magneto inside failure Check 1) Lack of fuel Refuel 2) Clogged carburetor Check and clean Replace 3) Fuel with water 4) Oil in the oil pump does not come out or the oil flow is very little Description Cause Countermeasure 1) Oil is not adjusted properly Adjust the lev
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