Table of Contents
Advertisement
OPERATOR'S MANUAL
CSP3816 - UT74123A - 406 mm 16 in. 38cc Chainsaw
CSP4518 - UT74125A - 457 mm 18 in. 45cc Chainsaw
CSP4520 - UT74127A - 508 mm 20 in. 45cc Chainsaw
Your new chainsaw has been engineered and manufactured to Homelite's high standard for dependability, ease of operation
and operator safety. Properly cared for, it will give you years of rugged, trouble-free performance.
WARNING:
To reduce the risk of injury, the user must read and understand the operator's manual.
Thank you for buying a Homelite chainsaw.
SAVE THIS MANUAL FOR FUTURE REFERENCE
Advertisement
Table of Contents
Related Manuals for Homelite CSP3816 - UT74123A
Summary of Contents for Homelite CSP3816 - UT74123A
- Page 1 CSP4520 - UT74127A - 508 mm 20 in. 45cc Chainsaw Your new chainsaw has been engineered and manufactured to Homelite’s high standard for dependability, ease of operation and operator safety. Properly cared for, it will give you years of rugged, trouble-free performance.
-
Page 2: Table Of Contents
IMPORTANT Servicing requires extreme care and knowledge and should be performed only by a qualified service technician. When servicing use only identical Homelite replacement parts. For safe operation, read and understand all instructions before using the chainsaw. Follow all safety instructions. -
Page 3: General Safety Rules
This includes ladders, scaffolding, trees etc. USE CAUTION WHEN HANDLING FUEL. Move the chainsaw at least 9 m (25 ft) from the refuelling point before starting the engine. DO NOT ALLOW OTHER PERSONS to be near the chainsaw when starting or cutting with the chainsaw. -
Page 4: General Safety Rules
OPERATE THE CHAINSAW ONLY in well ventilated areas. DO NOT OPERATE A CHAINSAW IN A TREE unless you have been specifically trained to do so. ALL CHAINSAW SERVICE, other than the items listed in the instruction manual, and all maintenance should be performed by competent chainsaw service personnel. -
Page 5: Specific Safety Rules
DO NOT CUT VINES and/or small underbrush less than 76 mm (3 in.) in diameter. SILENCER SURFACES ARE VERY HOT during and after operation of the chainsaw; keep all body parts away from the silencer. Serious burns may occur if contact is made with the silencer. - Page 6 Refer to “Operation” later in this manual. If the saw chain still moves at idling speed after adjustment has been made, contact a Homelite service dealer for adjustment and discontinue use until the repair is made. WARNING: All chainsaw service, other than items in the operator’s...
-
Page 7: Symbols
Important: Some of the following symbols may be used on your tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and more safely. SYMBOL NAME Safety Alert Symbol Read Your Operator’s Manual Eye, Hearing and Head Protection ®... - Page 8 SYMBOLS No Smoking Petrol Mix Petrol and Oil SAVE THESE INSTRUCTIONS UK - Page 8 Do not smoke when mixing fuel or filling fuel tank. Use unleaded petrol intended for motor vehicle use with an octane rating of 87 [R + M] / 2) or higher. Use 2-cycle oil for air-cooled engines.
-
Page 9: Specifications
Weight - No bar, chain, fuel or oil ... 4.4 kg Fuel tank capacity ... 575 cm Oil tank capacity ... 350 cm Bar lengths ... 33 - 46 cm Chain pitch ... 8.25 mm Chain gauge ... 1.25 mm Chain type ... -
Page 10: Features
FEATURES TRIGGER RELEASE SILENCER CHAIN OIL CAP FRONT HAND GUARD/ CHAIN BRAKE FRONT HANDLE SAFE-T-TIP ® CYLINDER COVER CHAIN CATCHER CHOKE LEVER PRIMER BULB CARBURETTOR ADJUSTMENT STARTER GRIP REAR HANDLE STARTER/FAN HOUSING ON/OFF SWITCH FUEL MIX CAP THROTTLE TRIGGER Fig. 2 UK - Page 10... -
Page 11: Operation
When making a replacement, be sure to order one of the Homelite bars listed for your saw in this operator’s manual. The proper size SAFE-T-TIP on the bar. Use only guide bars that have a provision for... - Page 12 Do not rely exclusively upon the safety devices built into the saw. As a chainsaw user, you should take several steps to keep your cutting jobs free from RUN POSITION accident or injury.
- Page 13 WARNING: Always turn off engine before refuelling. Never add fuel to a machine with a running or hot engine. Move at least 9 m ft.) from refuelling site before starting the engine. DO NOT SMOKE! Failure to heed this warning may result in possible personal injury. FUEL AND REFUELLING HANDLING THE FUEL SAFELY WARNING:...
-
Page 14: Starting The Engine
ADDING OIL Use HOMELITE Bar and Chain Oil. It is designed for chains and chain oilers, and is formulated to perform over a wide temperature range with no dilution required. Chainsaw should use approximately one tank of oil per tank of fuel. - Page 15 STARTING A COLD ENGINE: 3. Move the chain brake to the BRAKE position. NOTE: Set the chain brake by pushing the chain brake lever/hand guard forward (towards the bar) to the brake position. Refer to “Operation – Operating Chain Brake” for additional information.
-
Page 16: Stopping The Engine
Release the throttle trigger and let the engine return to idle. To stop the engine, move the ignition switch to the “O” stop position. Do not put the chainsaw on the ground when the chain is still moving. For additional safety, set the chain brake when the saw is not in use. - Page 17 PREPARING FOR CUTTING PROPER GRIP ON HANDLES Refer to “Specific Safety Rules – Safety Apparel” earlier in this manual for appropriate safety equipment. Wear non-slip gloves for maximum grip and protection. Hold the saw firmly with both hands. Always keep your LEFT HAND on the front handle and your RIGHT HAND on the rear handle, so that your body is to the left of the chain line.
-
Page 18: Adjusting The Carburettor
The carburettor will permit only limited adjustment of the “L” Low Jet) and “H” High Jet) needles. Any adjustment should be done by a Homelite service dealer. Under no circumstances should the “L” Low Jet) and “H” High Jet) needles be forced outside the range of adjustment. - Page 19 NOTE: The chain brake should engage and stop the chain immediately. If not, stop the saw by pressing the “ | / O ” on ignition switch. Take the saw to a Homelite service dealer for repair and discontinue use until the repair is made.
- Page 20 Do not fell trees near power lines or near buildings which could be struck by falling limbs or the tree itself. The chainsaw operator should keep on the uphill side of the terrain, as the tree is likely to roll or slide downhill after it is felled.
- Page 21 PROPER PROCEDURE FOR TREE FELLING See Figure 30. 1. Pick your escape route (or routes in case the intended route is blocked). Clear the immediate area round the tree and make sure there are no obstructions in your planned path of retreat. Clear the path of safe retreat approximately 135°...
- Page 22 After you complete the cut, reinstall the tip immediately. 5. As tree starts to fall, stop the chainsaw and put it down immediately. Retreat along the cleared path, but watch the action in case something falls your way.
- Page 23 REMOVING BUTTRESS ROOTS A buttress root is a large root extending from the trunk of the tree above the ground. Remove large buttress roots before felling. Make the horizontal cut into the buttress first, followed by the vertical cut. Remove the resulting loose section from the work area.
- Page 24 OPERATION BUCKING LOGS UNDER STRESS LOG SUPPORTED AT ONE END Make the first bucking cut one-third of the way through the log and finish with a two-thirds cut on the opposite side. As you cut the log, it will tend to bend. The saw may become FINISHING CUT LOAD pinched or hung in the log if you make the first cut deeper...
-
Page 25: Operation
FIRST CUT 1/3 DIAMETER FINISHING CUT WARNING: Spring poles are dangerous and could strike the operator, causing loss of control of the chainsaw. This could result in severe or fatal injury to the operator. UK - Page 25 SECOND CUT Fig. -
Page 26: Maintenance
ASSEMBLING THE BAR AND CHAIN See Figures 41 through 47. DANGER: Never start the engine before installing the guide bar, chain, drive case cover and clutch drum. Without all these parts in place, the clutch may fly off or explode, exposing the user to possible serious injury. - Page 27 6. Lay out the saw chain in a loop and straighten any kinks. The cutters should face in the direction of chain rotation. If they face backwards, turn the loop over. See Figure 45. 7. Place the chain drive links into the bar groove as shown in figure 46.
- Page 28 11. Replace the outer guide bar plate, ensuring that the bar pin groove is at the bottom with the upper and lower edges angled away from the guide bar. 12. Replace the clutch cover and bar mounting nuts. 13. Tighten the bar mounting nuts finger tight only. The bar must be free to move for tension adjustment.
-
Page 29: Adjusting The Chain Tension
ADJUSTING THE CHAIN TENSION WARNING: Never touch or adjust the chain while the motor is running. The saw chain is very sharp. Always wear protective gloves when performing maintenance on the chain. 1. Stop the engine before setting the chain tension. 2. - Page 30 NOTE: Inspect the drive sprocket for wear or damage when replacing the chain. If signs of wear or damage are present in the areas indicated, have the drive sprocket replaced by a Homelite service dealer. See Figure 56. INSPECT DRIVE SPROCKET...
- Page 31 CHECK FOR WEAR OR DAMAGE MAINTENANCE RIGHT-HAND CUTTERS Fig. 59 CAUTION: A dull or improperly sharpened chain can cause excessive engine speed during cutting, which may result in severe engine damage. WARNING: Improper chain sharpening increases the potential of kick-back. Fig.
- Page 32 TOP PLATE FILING ANGLE CORRECT 30° – file holders are marked with guide marks to align file properly to produce correct top plate angle. LESS THAN 30° – for cross cutting. MORE THAN 30° – feathered edge dulls quickly. SIDE PLATE ANGLE CORRECT 80 –...
- Page 33 RESTORE ORIGINAL SHAPE BY ROUNDING MAINTAINING THE GUIDE BAR CAUTION: Make sure the chain has stopped before you do any work on the saw. Every week of use, reverse the guide bar on the saw to distribute the wear for maximum bar life. See Figure 68. The bar should be cleaned every day of use and checked for wear and damage.
-
Page 34: Cleaning The Air Filter
TIGHTEN 3/4 OF A TURN MOUNTING THE SAFE-T-TIP® NOSE GUARD See Figure 70. 1. Mount the SAFE-T-TIP on the bar nose. See Figure 70. ® 2. Fit the locking rivet or tab in the recessed hole in the guide bar. 3. - Page 35 Never run the saw without all the parts, including the drive case cover and starter housing, securely in place. Because parts can fracture and pose a danger of thrown objects, leave repairs of the flywheel and clutch to trained Homelite service dealer personnel. CLEAN CYLINDER FINS...
-
Page 36: Maintenance
WARNING Silencer surfaces are very hot during and after operation of the chainsaw. Keep all body parts away from the silencer. Serious burns may occur if contact is made with the silencer. 1. Allow the silencer to cool. -
Page 37: Bar And Chain Combination
Air Filter” earlier in this manual. 3. Clean spark arrester screen. Refer to “Maintenance – Cleaning the Spark Arresting Silencer” earlier in this manual. 4. Contact a Homelite service dealer for carburettor adjustment. UK - Page 37 Chain Part Number... - Page 38 If oil is present the chain may be dull or bar may be damaged. If no oil is on the SAFE-T-TIP, contact a Homelite service dealer. 1. Release chain brake, refer to “Operation – Operating Chain Brake” earlier in this manual.
-
Page 39: Warranty
GUARANTEE – STATEMENT RTSA / RTUK / RTG) All Homelite products are guaranteed from defects in material and workmanship, for a period of twenty-four (24) months, effective and evidenced from date of original invoice or delivery note. Defects caused by normal wear and tear, unauthorised/improper maintenance/handling or overload are excluded from this guarantee, as are accessories such as battery packs, bulbs, blades and bits etc. - Page 40 OPERATOR’S MANUAL CSP3816 - UT74123A - 406 mm 16 in. 38cc Chainsaw CSP4518 - UT74125A - 457 mm 18 in. 45cc Chainsaw CSP4520 - UT74127A - 508 mm 20 in. 45cc Chainsaw Ryobi Technologies GmbH Itterpark 7 D-40724 Hilden Germany Tel.: +49 0)2103 / 29 58 0...