Desa EL-7 User Manual

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ELECTRIC CHAIN SAW
OWNER’S MANUAL
®
®
Models EL-7 16", EL-7 14", LNT-3 12",
IMPORTANT: Read and understand this manual before assembling or operating this chain saw. Improper use of saw can cause severe injury. Keep this manual for future reference.
CSA Classification for this saw is 2C; The consumer chain saw intended for general use by home owners, cottagers, etc., and for such general applications as clearing, pruning, cutting firewood, etc.
®
ELECTRIC CHAIN SAW
Read Instruction Manual
Do Not Expose to Rain or Use in Wet Conditions
Remove Plug Immediately if Cable is Damaged or Cut
Hold Chain Saw with Both Hands
Beware of Kickback
SYMBOLS INFORMATION
This symbol illustrates the computed kickback angle used as a measure of the re­action of a hand-held chain saw without chain brake when subjected, under simu­lated conditions, to a rota­tional kickback impulse.
Safety Information Warn­ings Appears Throughout This Manual
Pay close attention to them. Below are definitions for the safety information listed throughout this manual. WARNING indicates a haz­ard which can cause severe personal injury, death, or substantial property damage if you ignore warning. CAUTION indicates a hazard which will or can cause minor personal injury or property damage if you ignore warning.
SYMBOLSINFORMATION
Hearing and Eye Protection Must Be Worn
Indicates where oil should be added to lubricate saw chain
AUTO
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OWNER’S MANUAL
SAFETY
WARNINGS
Read and understand all
Warnings
Improper use of this chain saw can cause severe injury or death from fire, electrical shock, body contact with moving chain, or falling wood.
on pages 3 through 5.
BEFORE OPERATING CHAIN SAW
1. Read and understand this owner’s manual before operating chain saw.
2. Use chain saw for cutting wood only. Do not use for cutting any non-wood items.
3. Only well-instructed adults should op­erate chain saw. Never allow children to operate chain saw. First-time user should obtain informed, practical in­struction in addition to reading this manual. Practice cutting logs on a saw horse or cradle.
4. Use only electrical voltage noted on model plate of chain saw.
5. Use only extension cords marked for outdoor use. See page 8 for extension cord requirements.
6. Do not operate chain saw
• while under the influence of alcohol,
medication, or drugs
• in rain or in damp or wet areas
• where highly flammable liquids or
gases are present
• if saw is damaged, adjusted wrong,
or not fully assembled
• if trigger does not turn saw on and off.
Chain must stop moving when you re­lease trigger. Have faulty switch re­placed by authorized service person.
• while tired or in a hurry
• while in tree or on a ladder unless
trained to do so
7. Wear snug-fitting clothes when oper­ating chain saw. Do not wear loose clothing or jewelry. They can get caught in moving saw chain.
Safety
8. Wear the following safety gear when operating chain saw:
• heavy-duty gloves (wear rubber
gloves if working outdoors)
• steel-toed safety footwear with non-
skid soles
•eye protection such as safety glasses,
goggles, or face screen
• safety hard hat
• ear mufflers or ear plugs
• hair covering to contain long hair
•face or dust mask (if working in dusty
areas)
9. Before cutting, always provide the fol­lowing:
• clear work area
• secure footing
• planned retreat path from falling tree
10. Inspect tree before cutting down. Make sure there are no dead limbs or branches that may fall on you.
KICKBACK
WARNING: Avoid Kickback. Kickback can cause you to lose control of chain saw. Kickback can cause severe injury or death.
Kickback Safety Devices On This Saw
This saw has a low-kickback chain and re­duced-kickback guide bar. Both items reduce the chance of kickback. Kickback can still occur with this saw. Do not let tip of guide bar touch anything when chain is moving.
Never hold the chain saw by the front hand guard.
Cause Of Kickback
Kickback may occur when nose or tip of guide bar touches an object while chain is moving. If chain cutter catches on object, a sudden reverse action will result. The guide bar will kick up and back towards operator.
Kickback may also occur when wood pinches chain at guide bar nose. A sudden reverse action will also result.
The following steps will reduce the risk of kickback:
• Use both hands to grip saw while saw is running. Use firm grip. Thumbs and fingers must wrap around saw handles.
•Keep all safety items in place on saw. Make sure they work properly.
• Do not overreach or cut above shoulder height.
•Keep solid footing and balance.
• Stand slightly to left side of saw. This keeps your body from being in direct line with chain.
• Do not let guide bar nose touch anything when chain is moving (see Figure 1).
•Never try cutting through two logs at same time. Only cut one log at a time.
• Do not bury guide bar nose or try plunge cut (boring into wood using guide bar nose).
•Watch for shifting of wood or other forces that may pinch chain.
• Use extreme caution when reentering a previous cut.
• Use low-kickback chain and guide bar supplied with this chain saw. Only re­place these parts with chains and guide bars listed in this manual.
•Never use dull or loose chain. Keep chain sharp and tensioned correctly.
Direction
Do Not Let Guide Bar Nose Touch Here
90° Quadrant
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Figure 1 - Kickback Hazard Example. Do Not Let Nose of Guide Bar Touch Object While Chain is Moving
Continued
3
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ELECTRIC CHAIN SAW
SAFETY
WARNINGS
Continued
Saw Maintenance and Kickback Safety
Follow maintenance instructions in this manual. Proper cleaning of saw and chain and guide bar maintenance can reduce chances of kick­back. Inspect and maintain saw after each use. This will increase the service life of your saw.
Note:
Even with proper sharpening, risk of
kickback can increase with each sharpening.
PUSHBACK AND PULL-IN
WARNING: Avoid pushback and pull-in. These hazards can cause you to lose control of chain saw. Pushback or pull-in can cause severe injury.
Cause Of Pushback and Pull-In
Pushback may occur while cutting with top of guide bar. Pushback will force saw back towards you. Pull-in may occur while cut­ting with bottom of guide bar. Pull-in will force saw in towards wood you are cutting. These hazards can occur if chain is pinched, caught, or contacts a non-wood object.
The following steps will reduce the risk of pushback or pull-in:
• Use both hands to grip saw while saw is running. Use firm grip. Thumbs and fingers must wrap around saw handles.
• Do not overreach or cut above shoulder height.
•Keep solid footing and balance.
• Stand slightly to left side of saw. This keeps your body from being in direct line with chain.
•Have saw running at full speed before starting a cut.
•When cutting, make sure spike of saw is against wood (pull-in only). See Prod- uct Identification, page 6, to locate spike.
•Never try cutting through two logs at same time. Only cut one log at a time.
•Watch for shifting of log or other forces that may pinch chain.
• Use extreme caution when reentering a previous cut.
• Do not twist saw when removing guide bar from undercut.
• Use wedges made of plastic, wood, or light alloy (never steel or iron) to hold cut open.
CHAIN SAW OPERATION
1. Stay alert. Use common sense while op-
erating chain saw.
2. Keep work area clean. Cluttered areas
invite injuries.
3. Be aware of extension cord while op-
erating chain saw. Be careful not to trip over cord.
4. Keep children, animals, and bystand-
ers away from chain saw and extension cord. Only chain saw user should be in work area.
5. Do not cut down a tree unless you are
trained or have expert help.
6. If two or more persons perform buck-
ing and felling operations at the same time, provide plenty of distance between operations. Provide distance of at least twice the height of tree being felled.
7. Secure wood you are cutting by using
clamps or chocks.
8. Grip chain saw firmly with both hands.
Never operate chain saw with one hand. Never use hand guard as handle.
9. Keep finger off trigger until ready to
make cut.
10. Before starting chain saw, make sure
chain is not touching anything.
11. Avoid body contact with grounded ob-
jects such as pipes, wire fences, and metal posts.
12. Keep all parts of body away from chain
when saw is running.
13. Do not force chain saw while cutting. Apply light pressure.
14. Cut small brush and saplings with ex­treme care. Slender material may catch in chain and be whipped toward you. This could also pull you off balance.
15. When cutting limb or tree trunk that is under tension, use extreme caution. Be alert for wood springing back. When wood tension is released, limb could spring back and strike operator caus­ing severe injury or death.
16. Do not activate the chain brake to stop saw. Always release trigger to stop saw.
17. Carry chain saw from one place to an­other
• with chain saw unplugged
•by holding front handle (never use
front hand guard as handle)
• with finger off trigger
• with guide bar and chain to rear
• with scabbard in place
WARNING: This product con­tains chemicals known to the State of California to cause can­cer or birth defects, or other re­productive harm.
WARNING: Some dust cre­ated by power sanding, sawing, grinding, drilling, and other con­struction activities contains chemicals known (to the state of California) to cause cancer, birth defects, or other reproductive harm. Some examples of these chemicals are:
• lead from lead-based paints
• crystalline silica from bricks
and cement and other masonry products
• arsenic and chromium from
chemically-treated lumber
Your risk from these exposures varies, depending on how often you do this type of work. To re­duce your exposure to these chemicals: work in a well venti­lated area, and work with ap­proved safety equipment, such as those dust masks that are spe­cially designed to filter out mi­croscopic particles.
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OWNER’S MANUAL
SAFETY
WARNINGS
Continued
MAINTENANCE AND STORAGE OF CHAIN SAW
1. Unplug chain saw from power source
• when not in use
• before moving from one place to an­other
• before servicing
• before changing accessories or at­tachments
2. Inspect chain saw before and after each use. Check saw closely if guard or other part has been damaged. Check for any damage that may affect operator safety or operation of saw. Check for align­ment or binding of moving parts. Check that switch turns motor on and off. Check for broken or damaged parts. Do not use chain saw if damage affects safety or operation. Have damage re­paired by authorized service person.
3. Maintain chain saw with care.
•Never expose saw to rain.
•Keep chain sharp, clean, and lubri-
cated.
•Follow steps outlined in this manual
to sharpen chain.
•Keep handles dry, clean, and free of
oil.
•Keep all screws and nuts tight.
• Inspect power cord often. If dam-
aged, have repaired by authorized service person.
•Never carry chain saw by power cord.
•Never yank power cord to unplug it.
•Keep power cord from heat, oil, and
sharp edges.
• Inspect extension cords often and re-
place if damaged.
4. When servicing, use only identical re­placement parts.
5. Always store chain saw
• in a high or locked place, out of
children’s reach
• in a dry place
• in a carrying case or with scabbard
over guide bar
Keep this manual for reference. It is your guide to safe and proper operation of this chain saw.
CHAIN SAW NAMES AND TERMS
Bucking Process of cutting a felled tree or
log into lengths.
Felling Process of cutting down a tree. Felling Cut Final cut when felling a tree.
Make this cut on opposite side of tree from notching cut.
Front Hand Guard Shield between front
handle and guide bar. Protects left hand while using saw.
Front Handle Located at front of saw body. Guide Bar Metal bar that extends from saw
body. The guide bar supports and guides chain.
Guide Bar Nose Tip or end of guide bar. Kickback Quick backward and upward
motion of guide bar. Kickback may occur when tip of guide bar touches an object while chain is moving. The guide bar will kick up and back towards operator.
Limbing Process of cutting limb(s) from a
felled tree.
Low-Kickback Chain Chain that reduces
chance of kickback as required by CSA Standard Z62.3.
Normal Cutting Position Stance used
while making bucking and felling cuts.
Notching Cut Notch cut in tree that directs
fall of tree.
Oiler Control System for oiling guide bar
and chain.
Power Head Chain saw without chain and
guide bar. Also known as saw body.
Pushback (Kickback, Pinch) Rapid
pushback of chain saw. Pushback may occur if chain along top of guide bar is pinched, caught, or contacts a foreign object.
Rear Handle Handle located at rear of saw
body.
Reduced Kickback Guide Bar Guide bar
that reduces chance of kickback.
Replacement Chain Chain that complies
with CSA Standard Z62.3 when used with a specific saw. It may not meet CSA require­ments when used with other saws.
Saw Chain (Chain) Loop of chain having
cutting teeth for cutting wood. The motor drives chain. The guide bar supports chain.
Spiked Bumper (Spike) Pointed teeth at
front of saw body beside guide bar. Keep spiked bumper in contact with wood when felling or bucking. It helps maintain posi­tion of saw while cutting.
Sprocket Toothed wheel that drives chain. Switch Device that completes or interrupts
electrical circuit to motor of saw.
Switch Linkage This device connects
switch to trigger. It moves switch when you squeeze trigger.
Switch Lockout Device that reduces acci-
dental starting of saw.
Trigger Device that turns saw on and off.
Squeezing trigger turns saw on. Releasing trigger turns saw off.
Trimming (Pruning) Process of cutting
limb(s) from a living tree.
Undercut An upward cut from underside
of log or limb. This is done while in normal cutting position and cutting with top of guide bar.
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5
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ELECTRIC CHAIN SAW
PRODUCT IDENTIFICATION
Rear Handle
Rear Hand Guard
Power Cord
Front Handle
Spike
Motor Housing
Figure 2 - Electric Chain Saw
UNPACKING
1. Remove all items from carton.
2. Check all items for any shipping dam­age. If you find any damage or if any parts are missing, promptly inform dealer where you bought chain saw.
Front Hand Guard
Saw Chain
Sprocket Cover
Oil Level Sight Hole (located on saw body, hidden by front handle)
Oil Cap With Squeeze Bulb
Switch Lockout
Trigger
Guide Bar Nose
Guide Bar
Scabbard
ASSEMBLY
Note:
Some models are pre assembled. As­sembly is not needed on these models. See Saw Chain Tension Adjustment, page 8.
WARNING: Cutting edges on
chain are sharp. Use protective gloves when handling chain.
The plastic hardware bag should include:
• two guide bar bolts
• two guide bar nuts
• one Phillips-head tapping screw
1. Lay chain out flat.
2. Install front hand guard onto saw body. Do this by pressing two mounting stand­outs on hand guard into hex-shaped holes in saw body (see Figure 3, page 7).
3 Insert tapping screw through hand
guard and into saw handle. Tighten screw firmly.
4. Turn adjusting screw counterclockwise (see Figure 4, page 7). Continue to turn adjusting screw until adjusting block is to rear of adjusting plate.
5. Install guide bar onto saw body. Place rear of guide bar between adjusting plate and sprocket support.
IMPORTANT:
Make sure to insert ad­justing block into oval adjusting hole on guide bar.
6. Line up holes on sprocket support with center slot on guide bar and holes in saw body.
7. Insert guide bar bolts through front hand guard, saw body, center slot of guide bar, and sprocket support. Attach guide bar nuts to guide bar bolts.
IMPORTANT:
Tighten guide bar nuts finger tight only. Make sure adjusting block is in oval adjusting hole on guide bar.
8. Place chain around drive sprocket, then along top groove of guide bar and around guide bar nose.
Note:
Make sure cutting edges of chain are facing the right direction. Position chain so cutting edges on top of guide bar face guide bar nose (see Figure 3, page 7).
CAUTION: Do not place chain on saw backwards. If chain is backwards, saw will vibrate badly and will not cut.
9. Adjust saw chain tension. Follow steps under Saw Chain Tension Adjustment, page 8.
IMPORTANT: Do not clamp chain saw in vise during assembly.
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ASSEMBLY
Continued
OWNER’S MANUAL
Tapping Screw
Guide Bar Bolts
Mounting Stand-Outs
Front Hand Guard
Towards Guide Bar Nose
Cutting Edge
Drive Sprocket
Cutting Edge
Guide Bar Nuts
Saw Chain
Guide Bar
Adjusting Hole
FILLING OIL TANK
1. Remove oil cap.
2. Fill oil tank with SAE #30 motor oil.
Note:
For temperatures below -1°C, use SAE #10 oil. For temperatures above 24°C, use SAE #40 oil.
3. Replace oil cap at once. Tighten oil cap firmly for good seal. This will avoid oil seepage from tank.
4. Wipe off excess oil.
Note:
It is normal for oil to seep when saw is not in use. Empty oil tank , tighten oil cap, and store upside down after each use to prevent seepage.
Figure 3 - Assembling Guide Bar, Chain, and Hand Guard
Adjusting Block
Figure 4 - Part Locations For Assembling Guide Bar
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Adjusting Plate
Adjusting Screw
Sprocket Support
7
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ELECTRIC CHAIN SAW
SAW CHAIN TENSION ADJUSTMENT
WARNING: Unplug chain saw from power source before adjust­ing saw chain tension.
WARNING: Cutting edges on chain are sharp. Use protective gloves when handling chain.
WARNING: Maintain proper chain tension always. A loose chain will increase the risk of kickback. A loose chain may jump out of guide bar groove. This may injure operator and damage chain. A loose chain will cause chain, guide bar, and sprocket to wear rapidly.
Note:
For pre assembled models, the saw
chain tension is properly set at factory. A new chain will stretch. Check new chain after first few minutes of operation. Allow chain to cool down. Follow steps below to readjust saw chain tension.
1. Before adjusting chain, make sure guide bar nuts are only finger tight (see Figure 3, page 7). Also make sure adjusting block is in oval adjusting hole on guide bar (see Figures 3 and 4, page 7).
2. Turn adjusting screw clockwise until all slack is out of chain (see Figure 5).
Note:
There should be no gap between side links of chain and bottom of guide bar (see Figure 6)
3. Wearing protective gloves, move chain around guide bar. Chain should move freely. If chain does not move freely, loosen chain by turning adjusting screw counterclockwise.
4. After chain tension is correct, tighten guide bar nuts firmly. If not, guide bar will move and loosen chain tension. This will increase the risk of kickback. This can also damage saw. chain will stretch. Check new chain after first few minutes of operation. Allow chain to cool down. Readjust chain tension.
Figure 5 - Turning Adjusting Screw
Guide Bar Nuts
Guide Bar
Gap
Incorrect
Tension
Figure 6 - Saw Chain Adjustment
Note:
A new
Guide Bar
Correct
Tension
OPERATING CHAIN SAW
WARNING: Read and under­stand this owner’s manual before operating this saw. Make certain you read and understand all
Warnings.
chain saw can cause severe in­jury or death from fire, electrical shock, or body contact with mov­ing chain, or falling wood.
Improper use of this
EXTENSION CORDS
Use proper extension cord with this chain saw. Use only extension cords marked for outdoor use. Use an extension cord no less than 1.5 mm2 (14SWG) at distances up to 30 meters (100 feet). The cord must be marked with suffix W following the cord type marking.
Use an extension cord heavy enough to carry the current your saw will draw. An under­sized cord will cause a voltage drop at the saw, loss of power, and overheating.
Keep cord away from cutting area. Make sure cord does not catch on branches or logs during cutting. Inspect cords often. Replace damaged cords.
The extension cord may come undone from the power cord during use. To avoid this, make a knot with the two cords as shown in Figure 7.
Extension Cord
Figure 7 - Tying Extension Cord and Power Cord in Knot
Example:
SJTW
Safety
Chain Saw Power Cord
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OWNER’S MANUAL
OPERATING CHAIN SAW
Continued
OILING CHAIN
Always check oil level before using saw. To oil chain, press squeeze bulb on oil cap. Do not attempt to operate the oiler while cut­ting with the saw. Oil will feed onto guide bar and chain. Press squeeze bulb on oil cap at least once before each cut. Check oil level often by looking at oil sight level hole. Oil sight level hole is on left side of saw, be­tween front handle and front hand guard.
6. When starting a cut, place moving chain against wood. Hold saw firmly in place to avoid possible bouncing or skating (sideways movement) of saw.
7. Guide saw using light pressure. Do not force saw. The motor will overload and can burn out.
8. Remove saw from a cut with saw run­ning at full speed. Stop saw by releas­ing trigger. Do not use the chain brake. Make sure chain has stopped before setting saw down.
9. Practice until you can maintain a steady, even cutting rate.
Front Hand Guard
Switch Lockout
Trimming a tree is the process of cutting limbs from a living tree. Make sure your footing is firm. Keep feet apart. Divide your weight evenly on both feet. Follow direc­tions below to trim a tree.
1. Make first cut 15 centimeters (six inches) from tree trunk on underside of limb. Use top of guide bar to make this cut. Cut 1/3 through diameter of limb (see Figure 10).
2. Move five to ten centimeters (two to four inches) farther out on limb. Make second cut from above limb. Continue cut until you cut limb off.
3. Make third cut as close to tree trunk as possible on underside of limb stub. Use top of guide bar to make this cut. Cut 1/3 through diameter of stub.
4. Make fourth cut directly above third cut. Cut down to meet third cut. This will remove limb stub.
CAUTION: Seek professional help if facing conditions beyond your ability.
Figure 8 - Pressing Squeeze Bulb on Oil Cap to Oil Chain
CUTTING WITH THE CHAIN SAW
1. Connect saw to extension cord. Con­nect extension cord to power supply.
2. Make sure section of log to be cut is not laying on ground. This will keep chain from touching ground as it cuts through log. Touching ground with moving chain will dull chain.
3. Use both hands to grip saw. Always use left hand to grip front handle and right hand to grip rear handle. Use firm grip. Thumbs and fingers must wrap around saw handles (see Figure 9).
4. Make sure your footing is firm. Keep feet apart. Divide your weight evenly on both feet. Stand slightly to left side of saw. This keeps your body from be­ing in direct line with chain.
5. When ready to make a cut, press in switch lockout with right thumb and squeeze trigger (see Figure 9). This will turn saw on. Releasing trigger will turn saw off. Make sure saw is running at full speed before starting a cut.
Trigger
Figure 9 - Front Hand Guard, Switch Lock­out, and Trigger Location
TRIMMING A TREE (Pruning)
WARNING: Avoid kickback. Kickback can result in severe in­jury or death. See 3 to avoid risk of kickback.
WARNING: Do not operate chain saw while
• in a tree
• on a ladder or any other un-
stable surface
• in any awkward position You may lose control of saw caus­ing severe injury.
WARNING: Do not cut limbs higher than your shoulders.
Kickback,
page
4th Cut - Final Stub Cut
15 cm
(6")
5 to 10 cm (2" to 4")
1st Cut - Pruning Undercut (to avoid
splintering) 3rd Cut - Stub Undercut (to
avoid splintering)
Figure 10 - Cutting A Limb
2nd Cut ­Pruning Cut (to avoid pinching)
Continued
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9
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ELECTRIC CHAIN SAW
OPERATING CHAIN SAW
Continued
FELLING A TREE (Cutting Down a Tree)
WARNING:
• Avoid kickback. Kickback can result in severe injury or death. See
Kickback,
risk of kickback.
• Do not fell a tree without ample skill or expert help.
• Keep children, animals, and bystanders away from area when felling a tree.
• If two or more persons per­form bucking and felling op­erations at the same time, pro­vide ample distance between operations. Provide distance of at least twice the height of tree being felled.
WARNING: When felling a tree, be aware of your surroundings. Do not endanger any person, strike utility lines, or cause property dam­age. If tree strikes utility lines, con­tact utility company at once.
CAUTION: Seek professional help if facing conditions beyond your ability.
Felling is the process of cutting down a tree. Make sure your footing is firm. Keep feet apart. Divide your weight evenly on both feet. Follow directions below to fell a tree.
page 3, to avoid
Before Felling a Tree
1. Before felling, inspect tree. Make sure there are no dead limbs or branches that may fall on you. Study natural lean of tree, location of larger branches, and wind direction. This will help you judge which way tree will fall.
2. Clear work area around tree.
3. Plan and clear a retreat path before fell­ing. Make retreat path opposite to planned direction of fall of tree and at 45° angle (see Figure 11).
4. Remove dirt, stones, loose bark, nails, staples, and wire from tree where you will make felling cuts.
5. Stay on uphill side when felling tree. Tree could roll or slide downhill after falling.
Retreat Path
Direction of Fall
45°
Retreat Path
Figure 11 - Retreat Path From Tree
Tree
Felling Procedure Felling Notch
A properly placed felling notch will deter­mine direction tree will fall. Place felling notch on side of tree in direction you want tree to fall (see Figure 12). Follow direc­tions below to create a felling notch.
1. Make lower notch cut as close to ground as possible. Hold saw so guide bar is horizontal. Cut 1/3 the diameter of tree trunk (see Figure 12). ways make this horizontal lower notch cut first. If you make this cut second, tree can pinch chain or guide bar.
2. Start upper notch cut the same distance above first cut as first cut is deep.
Example:
If lower notch cut is 20 cen­timeters deep (eight inches), start up­per notch cut 20 centimeters (eight inches) above it. Cut downward at 45° angle. The upper notch cut should meet end of lower notch cut (see Figure 12).
3. Remove tree trunk wedge created by notching cuts.
Note:
Al-
Felling Cut
1. Make felling cut five centimeters (two inches) higher than lower notch cut and on opposite side of tree (see Fig­ure 12). Keep felling cut parallel to lower notch cut.
2. Cut towards notch.
WARNING: Do not cut all the way through tree. Leave about five centimeters (two inches) of tree diameter uncut directly behind fell­ing notch (see Figure 12). This uncut portion acts as a hinge. The hinge helps keep tree from twist­ing and falling in wrong direction.
3. As felling cut nears hinge, tree should begin to fall. wedges into felling cut to control direc­tion of fall. If tree settles back and pinches chain, drive wedges into felling cut to remove saw. Only use wedges made of wood, plastic, or aluminum. Never use wedge made of steel. This could cause kickback and damage to chain.
4. When tree begins to fall, quickly
•remove saw from felling cut
•release trigger to turn saw off
• put saw down
•exit area using retreat path
WARNING: Be alert for falling overhead limbs. Watch your foot­ing while exiting area.
3rd Cut ­Felling Cut
5 cm (2 inches)
Figure 12 - Felling A Tree
5 cm (2 in.)
Note:
If needed, drive
Hinge
Direction of Fall
2nd Cut ­Upper Notch Cut
1st Cut ­Lower Notch Cut
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OWNER’S MANUAL
OPERATING CHAIN SAW
Continued
LIMBING A TREE
WARNING: Avoid kickback. Kickback can result in severe in­jury or death. See 3, to avoid risk of kickback.
WARNING: When cutting limb that is under tension, use extreme caution. Be alert for wood spring­ing back. When wood tension is released, limb could spring back and strike operator causing se­vere injury or death.
CAUTION: Seek professional help if facing conditions beyond your ability.
Limbing is removing branches from a fallen tree. Make sure your footing is firm. Keep feet apart. Divide your weight evenly on both feet. Do not remove larger limbs un­der tree that support log off ground. Remove each limb with one cut (see Figure 13). Clear cut limbs from work area often. This will help maintain a safe work area.
Kickback,
page
BUCKING A LOG
WARNING: Avoid kickback. Kickback can result in severe in­jury or death. See 3, to avoid risk of kickback.
WARNING:
• If on slope, make sure log will
not roll down hill. Secure log by using wooden stakes. Drive wooden stakes into ground on downhill side of log. Stand on uphill side of log while cutting. Log may roll after cutting.
• Never try cutting through two
logs at same time. This could increase the risk of kickback.
• While cutting log, never hold
log with your hand, leg, or foot.
• While cutting log, never allow
another person to hold log.
• Turn off and unplug saw be-
fore moving from one place to another.
CAUTION: Seek professional help if facing conditions beyond your ability.
Kickback,
page
Bucking a log is cutting a log into sections. Make sure your footing is firm. Keep feet apart. Divide your weight evenly on both feet. Stand slightly to left of saw. This keeps your body from being in direct line with chain. When possible, raise log or section off ground. Do this by using limbs, logs, chocks, etc.
When cutting through log, maintain control by reducing cutting pressure near end of cut. Do not relax your grip on chain saw handles. Do not let moving chain touch ground. Ground will dull moving chain. After cut­ting through log, release trigger to turn saw off before moving saw.
Follow directions below to buck a log.
Entire Length Of Log On Ground
Cut log from top (see Figure 14).
Make sure you start your cut where limb will not pinch saw during cutting. To avoid pinching, start cut on freely hanging limbs from above limb. Start cut on limbs under tension from under limb. If pinch occurs, turn saw off, lift limb, and remove saw.
Figure 13 - Limbing A Tree
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11
Figure 14 - Bucking Log With Entire Length On Ground
Continued
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ELECTRIC CHAIN SAW
OPERATING CHAIN SAW
Continued
Log Supported On One End
1. Make first cut on underside of log (see Figure 15). Use top of guide bar to make this cut. Cut 1/3 through diam­eter of log. This cut will keep section from splintering when cut.
2. Make second cut directly above first cut. Cut down to meet first cut. This cut will keep log from pinching guide bar and chain.
2nd Cut
1st Cut
Figure 15 - Bucking Log When Log Is Supported On One End
Log Supported On Both Ends
1. Make first cut from above log (see Fig­ure 16). Cut 1/3 through diameter of log. This cut will keep section from splintering when cut.
2. Make second cut on underside of log, directly under first cut. Use top of guide bar to make this cut. Cut up to meet first cut. This will keep log from pinch­ing guide bar and chain.
1st Cut
2nd Cut
Figure 16 - Bucking Log When Log Is Supported On Both Ends
CLEANING AND MAINTENANCE
NOTICE: Below are instructions for servicing your chain saw. Any servicing not mentioned below should be done by an authorized service person.
CLEANING SAW BODY
WARNING: Unplug chain saw from power source before servic­ing. Severe injury or death could occur from electrical shock or body contact with moving chain.
WARNING: Cutting edges on chain are sharp. Use protective gloves when handling chain.
WARNING: When cleaning
saw body
• do not submerge saw in any liquids
• do not use products that con­tain ammonia, chlorine, or abrasives
• do not use chlorinated clean­ing solvents, carbon tetrachlo­ride, kerosene, or gasoline
Keep saw body clean. Use a soft cloth damp­ened with a mild soap and water mixture. Wipe saw body to clean.
CARE OF GUIDE BAR
Uneven bar wear causes most guide bar prob­lems. Incorrect sharpening of chain cutter and depth gauge settings often cause this. When bar wears unevenly, it widens guide bar groove (see Figure 17). This causes chain clatter and rivet popping. Saw will not cut straight. Replace guide bar if this occurs.
Inspect guide bar before sharpening chain. A worn or damaged guide bar is unsafe. A worn or damaged guide bar will damage chain. It will also make cutting harder.
Guide Bar Groove
Guide Bar
Normal Guide Bar Guide Bar With
Uneven Wear
Figure 17 - Guide Bar Cross Section Showing Uneven Bar Wear
For more information, visit www.desatech.com
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