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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. When mixing small 

amounts of fuel, even small inaccuracies can drastically affect the 

ratio of the mixture. 

 Gasoline 

•Use good quality gasoline.

 

    

•The lowest recommended octane grade is 90. 

Two-stroke oil 

           

•Use two-stroke engine oil, wh

ich is specially formulated for 

our air-cooled two stroke-engines.( JASO FC GRADE OIL 

OR ISO EGC GRADE) 

        •Never use oil intended for four-stroke engines. 

Recommended mixing ratio: 

 

 

 

 

25:1 Mix Chart                   

Gasoline (L)   1   2    3    4    5

 

2-cycle oil (ml) 40    80    120    160    200

 

 

30:1 Mix Chart                   

Gasoline (ml)    300      600    900      1200        1500

 

2-cycle oil(ml)    10        20      30        40            50

 

 

WARNING

 

 

keep open flames away from the area where fuel is 

handle or stored. 

 

Mix and store fuel only in an approved gasoline 

Condition        Gasoline: oil 

Up to 100 hours use        25:1 
After 100hours use          30:1 

Summary of Contents for KZ-5121CS

Page 1: ...HAINSAW OPERATOR S MANUAL 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 f...

Page 2: ...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: ...tions carefully and follow them without fail NOTES ON TYPES OF WARNINGS IN THE MANUAL WARNING This mark indicates instructions which must be followed in order to prevent accidents which could lead to...

Page 4: ...ver 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 Fuel tank 20 Bumper sp...

Page 5: ...ich you purchased the product to order new seals and affix the new seal s in the required location s 2 EXPLANATION OF SYMBOLS AND SAFETY WARNINGS 1 Read owner s manual before operating this machine 2...

Page 6: ...CHAIN OIL c The indication regarding the chock Pulling out the chock knob the chock closes d The indication regarding the switch Flipping the engine switch to the o OFF direction the engine stops e T...

Page 7: ...2 hours or less g Be sure to keep this manual handy so that you may refer to it later 4 4 SAFETY PRECAUTIONS BEFORE USING THE MACHINE a Read this owners manual carefully to understand how to operate t...

Page 8: ...when barefoot 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...

Page 9: ...h hands when the engine is running Use a firm grip with thumb and fingers encircling the handles Keep all parts of your body from the machine when the engine running Before staring the engine make sur...

Page 10: ...into your saw As a chain saw user you should take several steps to keep cutting jobs free from accident or injury 1 With a basic understanding of kickback you can reduce or eliminate the element of s...

Page 11: ...them The chain brake A can either be activated manually by your left hand or automatically by the inertia release mechanism The brake is applied when the front hand guard B is pushed forwards To relea...

Page 12: ...e of the bar is farthest away from you the chain brake is designed to be activated by the inertia in the kickback direction If the kickback is less violent or the kickback zone of the bar is closer to...

Page 13: ...e engine Leave all maintenance other that the items listed in the Owner s Manual to your competent servicing dealer TRANSPORT For longer periods of transport of the chain saw the fuel and chain oil ta...

Page 14: ...safety 1 Pull the guard towards the front handle to check that the chain brake is not on 2 loosen the nuts and remove the chain cover 3 Install the bar over the bar bolts Place the bar in its rearmos...

Page 15: ...it correctly over the drive sprocket and that the chain is correctly located in the groove in the bar Tighten the bar nuts finger tight Tension the chain by turning the chain tensioning screw clockwis...

Page 16: ...ck 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...

Page 17: ...ne The lowest recommended octane grade is 90 Two stroke oil Use two stroke engine oil which is specially formulated for our air cooled two stroke engines JASO FC GRADE OIL OR ISO EGC GRADE Never use o...

Page 18: ...troke oil Move the machine at least 3m from the refuelling point before starting it If you have spilled fuel or chain oil on the machine Wipe off the spillage and allow remaining fuel to evaporate If...

Page 19: ...e by turning the oil pump adjustment screw using a screwdriver or combination spanner The machine is supplied from the factory with the screw set to middle position Turning the screw clockwise will re...

Page 20: ...about 3 6 times The oil cup need not be completely filled 3 Put the switch to ON position 4 Pulling out the chock knob the chock is closed 5 Grip the front handle with your left hand Put your right f...

Page 21: ...s now ready for use NOTE When restarting immediately after stopping the engine leave the choke knob at the open position WARNING Do not start the engine while handing the chain saw with a hand The saw...

Page 22: ...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 STOPPING E...

Page 23: ...trolled with one hand Always have a secure firm grip around the handles with both hands Always use full throttle when cutting Reduce the speed to idle after every cut running the engine for too long a...

Page 24: ...f heavy branches ease of job after felling and other factors 1 while cleaning the area around the tree arrange a good foothold and retreat path 2 Make s notch cut one third of the way into the tree on...

Page 25: ...pposite side A Log handing off the ground In area A saw up from the bottom one third and finish by sawing down from the top In area B saw down from the top one third and finish by sawing up from the b...

Page 26: ...after taking off the Cylinder cover Split the air filter into halves When refitting make sure that the air filter seals tightly against the filter holder Clean the filter by brushing or shaking it The...

Page 27: ...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 cha...

Page 28: ...n 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 3 Sprocket Check for cracks and for excessive wear inte...

Page 29: ...n catcher is not damaged and is firmly attached to the body of the chain saw 5 Muffler 1 Regularly check that the muffler is securely attached to the machine 2 Some mufflers are equipped with a specia...

Page 30: ...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 WARNING Be...

Page 31: ...r every cutter has been set check the depth gauge and file it to the proper level as illustrated WARNING Be sure to round off the front edge to reduce the chance of kickback or tie strap breakage Use...

Page 32: ...rmal spark plug sparkplugfouledwithoily eposits sparkpluginsulation deposits sparkgapistoolargeor small clean the oily deposits replace spark plug adjust spark gap 0 5 0 65 mm highvoltage wirespark ab...

Page 33: ...posits clean fuel filter clean fuel road adjust carburetor clean the oily deposits Compress press is shortage piston piston ring cylinder attrite replace piston piston ring engine leak conjoint surfac...

Page 34: ...sound engine overheats burning room fouled with oily deposits gasoline branded is unfit avoiduse it for long time high speed and heavy load clean the oily deposits replacerequirebranded octane engine...

Page 35: ...r min 2 65 6500 Carburetor Diaphragm type ignition C D I Spark plug CMR6A Oil feeding system Automatic pump Starting system Recoil Starter Guide bar Type Sprocket nose Guide bar Size in 20 standard Sa...

Page 36: ...witching device 5 KZ 5121 CS E05 Pin B3 22 6 KZ 5121 CS E06 Choker Pull Rod 7 KZ 5121 CS E07 Choker Plug 8 KZ 5121 CS E08 Choker Handler S N PART NO DESCRIPTION 9 KZ 5121 CS E09 Screw M4x20 10 KZ 5121...

Page 37: ...ction disk 46 KZ 5121 CS E46 Bearing 47 KZ 5121 CS E47 Oil Pump Worm Gear 48 KZ 5121 CS E48 Oil Pump cover S N PART NO DESCRIPTION 49 KZ 5121 CS E49 Oil pump Fuel pipe 50 KZ 5121 CS E50 Oil Pump 51 KZ...

Page 38: ...Cylinder Spring 8 KZ 5121 CS H08 Chain Catcher 9 KZ 5121 CS H09 Plug S N PART NO DESCRIPTION 10 KZ 5121 CS H10 Fuel Pipe 11 KZ 5121 CS H11 Ventilate Plug 12 KZ 5121 CS H12 Admitting Valve 13 KZ 5121 C...

Page 39: ...H40 Tensioning Cover Plate 41 KZ 5121 CS H41 Initiative Tensioning Gear 42 KZ 5121 CS H42 Passive Tensioning Gear 43 KZ 5121 CS H43 Protect Lump S N PART NO DESCRIPTION 44 KZ 5121 CS H44 Spring 45 KZ...

Page 40: ...should be cleaned then use closed packaging packaging should be firm Store the machine in dry place For transportation safety The machine should comply with ISTA Meaning of crossed out wheeled dustbin...

Page 41: ...Product Name Product Serial No Invoice DN No Date of Delivery Dealer s Office Seal Dealer Sign Customer Sign I We accept the terms and conditions of Warranty as in the Warranty Card DEALER S COPY Warr...

Page 42: ...le using the pressure washers to draw water which is contaminated with dust solvents eg paint thinners gasoline oil etc vii Repair done by unauthorized service people viii Those parts subject to wear...

Page 43: ...ck and Adjust the Carburetor Tuning Check and Sharpen the cutting Tools Start and Check the Noise Vibration Loosen Fasteners etc Product familiarization on Usage Routine maintenance and Storage Custom...

Page 44: ...44 Small Maintenance Big Savings Small Maintenance Big Savings Small Maintenance Big Savings...

Page 45: ......

Page 46: ...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 COMPA...

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