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Section 3 Fitting the Bar & Chain 1 Check the chain tension frequently when operating the chain saw. Always use protective gloves. With the engine off, follow the ensuing instructions: • Pull the guard (Fig. 1) towards the front handle to check that the chain brake is not on. 2 • Remove the bar nuts (A) and the chain cover (B, Fig. 2). • Remove and discard the plastic shim from the bar studs (C, Fig. 3). • Take the chain tightener pawl (D, Fig. 3) to the limit stop, by unscrewing all the chain
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Fitting the Bar & Chain (continued) • Put down the chain cover, inserting it into its housing 5 and, keeping it pressed against the bar, screw on the chain tightener screw (L, Fig. 5) so that the pawl (D, Fig. 3) goes into the hole (G, Fig. 3) of the bar. • Fit the chain cover and the relative nuts without tightening them. • Tension the chain by means of the tensioning screw (L, Fig. 5). • Hold the tip of the guide bar up and tighten the chain cover nuts securely (Fig. 7). The chain should be t
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Section 4 Oil and Fuel FUEL MIXTURE 9 Refer to the values in Figure 9. Use a 2% (50:1) oil/gasoline mixture. + UNLEADED GAS 2 CYCLE OIL (2%) 1 GALLON US 2.56 FL. OZ. Two-stroke engines have high specific horsepower (3.8 LITERS) (76 ml) and we therefore recommend the use of well- 1 LITER 20 ml known, super gasoline, without lead and an octane rating of no less than 90. When preparing the MIXING RATIO - 50:1 mixture, only use a high quality oil designed for air- cooled two stroke engines. Shake t
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Section 5 Operation STARTING THE ENGINE 12A 12B 1. Fill the carburetor by pushing primer bulb (A, Fig. 12B). 2. Put the ON/OFF switch (C, Fig. 12A) in the START position. 3. Pressing the push button (E, Fig. 14) opens the decompression valve. It will automatically close at the first start. We suggest to press the push button before every start. 4. Pull the choke lever (D, Fig. 12B). 5. Place the chain saw on the ground in a stable position. Check that the chain is free to turn and will 13 n
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Operation (continued) STOPPING THE ENGINE 15 Release the throttle lever and let the engine return to idle. (B, Fig. 15). Turn off the engine, putting the ON/OFF switch (C) in the STOP position. Do not put the chain saw on the ground when the chain is still moving. BREAKING-IN THE CHAIN New chains will stretch and must be tightened frequently. Tension adjustment must only be made when the chain is cool. 1. Turn the chain and lubricate it with additional oil 16 (Fig. 16). 2. Start the saw and a
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Section 6 Carburetor Adjustment CARBURETOR 18 Before adjusting the carburetor, clean the starter cover (Fig. 18), the air filter (Fig. 19) and warm up the engine. This engine is designed and manufactured in order to comply with the applicable Exhaust Emission Standards. The Exhaust Emission Control System includes the ignition system, the air inlet system and, mainly, the carburetor. In this engine, the carburetor (Fig. 20) is designed to permit only the adjustment of L and H screws in a range o
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Section 7 Kickback PRECAUTIONS AGAINST KICKBACK 21 Kickback is a dangerous reaction that can lead to serious injury. Do not rely only on the safety devices provided with your saw. As a chain saw user, you must take special safety precautions to help keep your cutting jobs free from accident or injury. KICKBACK WARNINGS Refer to Figures 21, 22, 23. 22 KICKBACK occurs when the moving chain contacts an object at the upper portion of the tip of the guide bar or when the wood closes in and pinches
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Kickback (continued) RECOMMENDED BAR & CHAIN COMBINATIONS Chains .325”x.058” Model Bar length Bar description Chain description .325 490-700-0004 CS5018 18” 490-700-0008 .325 490-700-0005 CS5220 20” 490-700-0009 Section 8 Chain Brake 25 INERTIAL CHAIN BRAKE The inertial chain brake ensures maximum safety when using the chain saw. It protects the operator from dangerous kickback which can occur during working phases. The chain brake can be actuated in two ways. First, when the operator pres
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Section 9 (Felling, Limbing Bucking) Cutting Techniques 31 29 30 32 OPERATING INSTRUCTIONS Never cut in high wind, bad weather, when visibility Always follow the safety precautions. The chain is poor or in very high or low temperatures. Always saw must only be used for cutting wood. It is check the tree for dead branches which could fall forbidden to cut other types of material. Vibrations during the felling operation. and kickback vary with different materials; the safety requirements and regu
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Cutting Techniques (continued) 33 36 34 35 Now, make your felling cut on the opposite side of the BUCKING trunk. Start the cut about 4-5 cm (2”) higher than the When bucking up the trunk to desired lengths, there is a center of the notch (3 - Fig. 30). basic rule to follow. Look to see where the trunk is Always leave a hinge (A, Fig. 31 and 32) which allows you supported, and determine which way the two halves will to control the direction the tree falls in. Put a wedge into fall when cut. the
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Section 10 Maintenance 37 39 38 Always wear protective gloves and eye protection A sharp chain produces well-defined chips. When during maintenance operations. Do not carry out your chain starts to produce sawdust, it is time to sharpen the chain. maintenance when the engine is hot. After sharpening the cutters 3-4 times, it is important to CHAIN SHARPENING check the height of the depth gauges. If necessary, you The pitch of the chain (Fig. 37) is .325”x.058”. should lower them using the flat fi
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Maintenance (continued) GUIDE BAR 40 The guide bar has a sprocket at its base that must be lubricated with grease using a lubrication syringe (Fig. 40). Reverse the guide bar every 8 working hours to ensure uniform wear. Keep the bar groove and lubrication hole clean using the bar groove cleaner (Fig. 41). Check the bar rails frequently for wear. If they are sufficiently worn, remove the burs and square-up the rails using the flat file (Fig. 42). 41 Never mount a new chain on a worn sprocket (F
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Maintenance (continued) FUEL FILTER 45 Check the fuel filter periodically. Replace it if it is too dirty (Fig. 45). OIL PUMP (automatic / adjustable) Flow adjustment is pre-set by the manufacturer. Oil flow can be adjusted by the operator according to specific requirements. This is accomplished by the special adjusting screw (Fig. 46). Oil flow occurs only when the chain is moving. 46 Never use or operate with used oil. STARTER ASSEMBLY VENT CLEANING Use a brush or compressed air to keep the c
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Professional
Landscaping Tools
CS5018 / CS5220
18 or 20”
CHAIN SAW
IMPORTANT: READ SAFETY RULES AND
INSTRUCTIONS CAREFULLY
DO NOT THROW AWAY
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Table of Contents Content Page Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Fitting the Bar & Chain . . . . . . . . . . . .
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Section 1 Safety The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and their explanations, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate any danger. The instructions or warnings they give are not substitutes for proper accident prevention measures. SYMBOL MEANING SAFETY ALERT SYMBOL: Indicates danger, Failure to obey a safety warning will result in warning or caution. Attention is required i
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Safety (continued) • Avoid accidental starting. Be in the starting position Kickback Safety Precautions whenever pulling the starter rope. The operator and unit must be in a stable position while starting. See Starting/Stopping Instructions. • Before you start the engine, make sure that the saw’s KICKBACK may occur when the nose or tip of the chain is not contacting anything. Do not cut near guide bar touches an object, or when the wood electrical cables or power lines. closes in and pinches th
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Safety (continued) • Use caution when handling fuel. Move the chain saw at • Store the unit in a dry area, locked up, located up high lest 10 feet (3 m) from the fueling point before starting and located out of the reach of children to prevent the engine. unauthorized use or damage. • Do not allow other persons to be near the chain saw • Never douse or squirt the unit with water or any other when starting or cutting with the chain saw. Keep liquid. Keep handles dry, clean and free from debris.
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Safety (continued) Safety and International Symbols This operator's manual describes safety and international symbols and pictographs that may appear on this product. Read the operator's manual for complete safety, assembly, operating and maintenance and repair information. SYMBOL MEANING SYMBOL MEANING •ON/OFF STOP CONTROL • SAFETY ALERT SYMBOL ON / START / RUN Indicates danger, warning, or caution. May be used in conjunction with other symbols or pictographs. •ON/OFF STOP CONTROL OFF OR STOP
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Section 2 Know Your Unit Chain Saw Components 1 - Choke lever 2 - Throttle trigger 3 - Throttle trigger lockout 4 - Carburetor adjustment screws 5 - Inertial brake lever 6 - Exhaust muffler 7 - Chain 8 - Guide bar 9 - Air filter cover 10 - On/off switch 11 - Fuel tank cap 12 - Starter handle 13 - Oil tank cap 14 - Primer bulb 15 - Decompression valve 16 - Lateral chain tensioner screw 7
