Kasei KZ-5121CS Operator's Manual
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Kasei KZ-5121CS Operator's Manual

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OPERATOR'S MANUAL
KZ-5121CS
CHAINSAW
Original Instructions
CAUTION: • Read all precautions and instructions in this manual before using this product.
Keep this manual for future reference. • Product may vary slightly from picture.

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  • Page 1 OPERATOR’S MANUAL KZ-5121CS CHAINSAW Original Instructions CAUTION: • Read all precautions and instructions in this manual before using this product. Keep this manual for future reference. • Product may vary slightly from picture.
  • Page 2 CAUTION Before using our chain saws, please read this manualcarefully to understand the proper use of your unit. Keep this manual handy. OWNER＇S MANUAL YD-50-E CHAIN SAW...

  • Page 3: Table Of Contents

    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, and for this reason you are requested to read all such instructions carefully and follow them without fail.

  • Page 4: Parts Location

    1. PARTS LOCTATION 1. Front handle 13. Chain tensioning screw oil cup 14. Clutch cover 3. Gland 15.Oil pump adjustment screw 4. Stop switch 16.Choke knob 5. Cylinder cover 17.Throttle control 6. Throttle control latch 18.Front hand guard 7. Rear handle 19.Muffler 8.

  • Page 5: Explanation Of Symbols And Safety Warnings

    2. EXPLANATION OF SYMBOLS AND SAFETY 2. EXPLANATION OF SYMBOLS AND SAFETY WARNINGS WARNINGS (1) Read owner＇s manual before operating this machine. (1) Read owner＇s manual before operating this machine. (2) Wear head, eye and ear protection. (2) Wear head, eye and ear protection. (3) Warning! Kickback is danger.

  • Page 6: Symbols On The Machine

    3. SYMBOLS ON THE MACHINE For safe operation and maintenance, symbols are carved in relief on the machine. According to the these indications, please be careful not to make any mistake . (a) The port to refuel the“ MIX GASOLINE” (b).

  • Page 7: Safety Precautions

    4.SAFETY PRECAUTIONS 4.SAFETY PRECAUTIONS ■ BEFORE USING THE MACHINE a. Read this owners manual carefully to understand how to operate this properly. ■ BEFORE USING THE MACHINE a. Read this owners manual carefully to understand how b. You should never use the product when under the influence of to operate this properly.
  • Page 8 h. Always be sure to include this manual when selling, lending, or otherwise transferring the ownership of the product. Never allow children or anyone unable to fully understand the directions given in this manual to use this product. ■ WORKING GEAR AND CLOTHING a.
  • Page 9 ■ BEFORE STARTING ENGINE Check working place, the cutting object and cutting direction. If there ò is obstacle, remove it. ● Never start cutting until you have a clear work area, secure footing and a planned retreat path from the failing tree. ●...
  • Page 10 ■ KICKBACK SAFETY PRECAUTIONS FOR CHAIN SAW USERS WARNING Take care when using your saw and make sure the kickback zone of the bar never touches any object. ● Kickback may occur when the nose or tip of the guide bar touches an object, or when the wood closes may cause a lightning fast reverse reaction, kicking the guide bar up and back towards the operator.
  • Page 11 (6) Follow manufactures sharpening and maintenance instructions for saw chain. (7) Only use replacement bars and chains specified by the manufact -urer or the equivalent. Chain brake and front hand guard ■ Your chain saw is equipped with a chain brake that is designed to stop the chain if you get a kickback.
  • Page 12 ● The way the chain brake is activated, either manually or automatically by the inertia release mechanism, depends on the force of the kickback and the position of the chain saw in relation to the object that the kickback zone of the bar strikes. If you get a violent kickback while the kickback zone of the bar is farthest away from you the chain brake is designed to be activated by the inertia in the kickback direction.
  • Page 13 MAINTENANCE ■ ● In order to maintain your product in proper working order. perform the maintenance and checking operations described in the manual at regular intervals. ● Always be sure to turn off the engine before performing any maintenance or checking procedures. WARNING The metallic parts reach high temperatures immediately after stopping the engine.

  • Page 14: Installing Guide Bar And Saw Chain

    5.INSTALLING GUIDE BAR AND SAW CHAIN WARNING The saw chain has very sharp edges ,Use thick protective gloves for safety. 1. Pull the guard towards the front handle to check that the chain brake is not 2. loosen the nuts and remove the chain cover. 3.
  • Page 15 WARNING Make sure that the edges of the cutting links are facing forward on the top edge of the bar. Fit the chain cover and locate the chain adjuster pin in the hole in the bar. Check that the drive links of the chain fit correctly over the drive sprocket and that the chain is correctly located in the groove in the bar.
  • Page 16 6. When fitting a new chain, the chain tension has to be checked frequently until the chain is run-in. Check the chain tension regularly. A correctly tensioned chain ensures good cutting performance and long life. NOTE A new chain will expand its expand its length in the beginning of use. Check and readjust the tension frequently as a loose chain can easily derail or cause rapid wear of itself and the guide bar...

  • Page 17: Fual And Chain Oil

    6.FUEL AND CHAIN OIL ■ FUEL The machine is equipped with a two-stroke engine and must always be run using a mixture of gasoline and two-stroke oil. It is important to accurately measure the amount of oil to be mixed to ensure that the correct mixture is obtained.
  • Page 18 container. NOTE Most engine troubles are caused ,directly or indirectly, by the fuel used on the machine .Take special care not to mix a motor oil for 4 cycle engines. ■ CHAIN OIL Use motor oil SAE＃30-＃40 in summer and SAE＃20 in winter. NOTE Do not use wasted or regenerated oil that can cause damage to the oil pump.
  • Page 19 ADJUSTMENT OF THE OIL PUMP ■ NOTE The saw chain oil tank and the fuel tank are designed so that the fuel runs out before the saw chain oil. Adjustments are made by turning the using a oil pump adjustment screw screwdriver or combination spanner.

  • Page 20: Starting And Stopping

    7.STARTING AND STOPPING ■ STARTING ENGINE 1. The chain brake should be activated when starting the chain saw. Activate the chain brake by pushing the front hand guard forwards. 2. Press the oil cup repeatedly until fuel begins to fill the diaphragm (about 3~6 times).
  • Page 21 7. By disengaging the throttle latch in order to the chock is opened. Pull the starter handle with your right hand and pull out the starter cord rapidly until the engine starts. 8.Pulling the front hand guard back towards the front handle. The chain saw is now ready for use.
  • Page 22 BREAK ■ 1.Don’t accelerate abruptly due to bad lubrication of the engine at the beginning of start-up. 2.Avoid the speedy idle motion and over speed motion. If the engine will run over speed, which not only shortens the service life of the engine but also causes more problems in the engine.

  • Page 23: Sawing

    8.SAWING WARNING ● Before proceeding to you job, read “For safe precautions” section. it is recommended to first practice sawing easy logs. This also helps you get accustomed to your unit. ● Always follow the safety regulations. The chain saw must only be use for cutting wood, It is forbidden to cut other types of material.
  • Page 24 stop or does not stop, replace the brake band and clutch drum before use. 2. It is extremely important that the chain brake be checked for proper operation before each use and that the chain be sharp in order to maintain the kickback safety level of this saw, removal of the safety devices.
  • Page 25 Before starting work, check the direction of bending force inside the log to be cut. Always finish cutting from the opposite side of bending direction to prevent the guide bar from being caught in the cut. A Log lying on the ground Saw down halfway.

  • Page 26: Maintenance

    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 accident starting. ■ MAINTENANCE AFTER EACH USE 1.Air filter and Gland WARNING The air filte rand gland must be regularly cleaned to remove dust and dirt in order to avoid Carburettor malfunctions.
  • Page 27 Grease the nose sprocket from the feeding port on the tip of the bar. To prolong the life of the bar you should turn it over daily. 3.Oiling port Remove the guide bar and check the oiling port for clogging. 4.Chain brake Brush off any wood dust, resin and dirt from the chain brake and clutch drum.
  • Page 28 ■ PERIODICAL SERVICE POINTS 1.Cooling system Dust clogging between the cylinder fins will cause overheating .Removing the Starter and the cylinder cover. Clean the cooling system with a brush once two week. 2.Spark plug Clean the electrodes with a wire brush and reset the gap to 0.5~0.65mm as necessary.
  • Page 29 (1) Needle bearing (2) Sprocket (3) Spacer Clutch Sprockets have a needle bearing on the drive shaft, which has to be greased regularly (once a week). Use only high quality bearing grease or engine oil 4. Chain catcher Check that the chain catcher is not damaged and is firmly attached to the body of the chain saw.
  • Page 30 6.SAW CHAIN WARNING It is very important for smooth and safe operation to keep the cutters always sharp. The cutters must be regularly to sharp in order to avoid: 1).Sawdust becomes powder-like. 2).You need extra force to saw in. 3).The cut way does not go straight 4).Vibration increases 5).Fuel consumption increases Cutter setting standards:...
  • Page 31 4).Round file diameter Always file cutting teeth from the inside face. Reduce the pressure on the return stroke. File all the teeth on one side first, then turn the chain saw and file the teeth on the other side. After every cutter has been set, check the depth gauge and file it to the proper level as illustrated.

  • Page 32: Trouble Shooting

    10. TROUBLE SHOOTING 1.Failure to start Problem Probable cause Remedy fuel system these is no fuel in tank add fuel in tank abnormality fuel filter obstruct clean fuel filter spark fuel fuel is too dirty instead fuel plug there is water in fuel instead fuel spark fuel...
  • Page 33 2.Low output problem probable cause remedy fuel filter obstruct flameoutwhen speedup clean fuel filter、clean fuel fall short of fuel the smoke is thin road、adjust carburetor muffler fouled with carburetorspout backward clean the oily deposits oily deposits Compress press is piston、piston replace piston、piston ring shortage ring、cylinder attrite...
  • Page 34 3.Engine running unstable Problem Probable cause Remedy piston,pistonring,cylinder there are replace piston,piston ring attrite knock sound replace piston pin, piston piston pin,piston attrite in engine replace bearing bearing of crank shaft attrite engine overheats avoiduse it for long time 、high there are burning room fouled with speed and heavy load clean the...

  • Page 35: Technical Data

    11.TECHNICAL DATA Chain saw Model KZ 5121CS Mixture Fuel (Gasoline25:Two-cycle oil 1) Fuel tank capacity(ml) Chain oil Motor oil SAE 10W-30 Oil tank capacity(ml) Displacement(cc) 50:8 Rated power kW/r/min 2.2/9000 Max. TorqueNm/r/min 2.65 /6500 Carburetor Diaphragm type ignition C.D.I Spark plug CMR6A Oil feeding system Automatic pump...
  • Page 36 ENGINE DIAGRAM & PART LIST OF KASEI CHAINSAW KZ 5121CS S.N. PART NO. DESCRIPTION S.N. PART NO. DESCRIPTION KZ-5121-CS-E01 Guide Cover KZ-5121-CS-E09 Screw M4x20 KZ-5121-CS-E02 Gland 10 KZ-5121-CS-E10 Cylinder KZ-5121-CS-E03 Start Rope Reel 11 KZ-5121-CS-E11 summer and 12 KZ-5121-CS-E12 Start Spring...
  • Page 37 S.N. PART NO. DESCRIPTION S.N. PART NO. DESCRIPTION Oil pump Fuel 18 KZ-5121-CS-E18 Gasket 49 KZ-5121-CS-E49 pipe 19 KZ-5121-CS-E19 M5x20 50 KZ-5121-CS-E50 Oil Pump 20 KZ-5121-CS-E20 Piston Ring Oil pump Fuel 51 KZ-5121-CS-E51 pipe 21 KZ-5121-CS-E21 Piston 52 KZ-5121-CS-E52 Cleaner Cover 22 KZ-5121-CS-E22 Ring Igntion Coil...
  • Page 38 HANDLE & ACCESSORIES DIAGRAM & PART LIST OF KASEI CHAINSAW KZ 5121CS S.N. PART NO. DESCRIPTION S.N. PART NO. DESCRIPTION Front Hand KZ-5121-CS-H10 Fuel Pipe KZ-5121-CS-H01 Guard KZ-5121-CS-H11 Ventilate Plug Guidance Lump KZ-5121-CS-H02 Washer KZ-5121-CS-H12 Admitting Valve KZ-5121-CS-H03 Guidance Lump...
  • Page 39 S.N. PART NO. DESCRIPTION S.N. PART NO. DESCRIPTION KZ-5121-CS-H19 Cover KZ-5121-CS-H44 Spring Spring cover KZ-5121-CS-H20 Reoil Spring KZ-5121-CS-H45 plate KZ-5121-CS-H21 Start Cover Assy. KZ-5121-CS-H46 Brake Reed KZ-5121-CS-H22 Starter Handle Brake Cover KZ-5121-CS-H47 Plate KZ-5121-CS-H23 Oil Tank Lid KZ-5121-CS-H48 Bolt Carburettor KZ-5121-CS-H24 Bottom Pad KZ-5121-CS-H49...
  • Page 40 INSPECTION & MAINTENANCE For safety use, make sure the machine is cleaned every three-months. Before working, make sure to inspect the filter and the nozzle,and ensure there is no impurity. After working, make sure there is no water in the pump and the hose. If the machine needs to be repaired in the guarantee period, please return the machine to the shop.
  • Page 41 Warranty Card CUSTOMER COPY Purchaser’s Name & Address Date of Delivery Dealer’s Office Seal Product Name KZ-5121CS CHAINSAW Product Serial No. Dealer Sign Customer Sign. Invoice / DN No. I/We accept the terms and conditions of Warranty as in the Warranty Card.
  • Page 42 1. LIMITED WARRANTY PERIOD : For a period of six months from the date of Sale / delivery of the product which ever is earlier. 2. LIMITED WARRANTY OBLIGATION : Replacement of defective part(s) by authorized dealer are free of charges. If found defective by reasons of defective material / poor workmanship, parts will be replaced and there will be no value re-imbursement.
  • Page 43 ISO 9001-2008 CERTIFIED COMPANY FREE SERVICE COUPON (30 Days / 20 hrs (Which ever is earlier) Model Serial Number KZ-5121CS CHAINSAW PDI Date Service No. Operations: • Check and Test the Fuel Mixture. • Check and Clean the Air Filter Purchase bill no.
  • Page 44 Small Maintenance. Big Savings. Small Maintenance. Big Savings. Small Maintenance. Big Savings.
  • Page 46 Multi-products, multi-applications Imported & Marketed by RATNAGIRI IMPEX PVT LTD Annapurna House, #1/1G, 7th Cross, New Guddadahalli Mysore Road, Bangalore-560 026 Customer Care: 1800-425-3036 email: info@ratnagiriimpex.com www.ratnagiriimpex.com AN ISO 9001:2008 CERTIFIED COMPANY...

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