Bosch 1677MDT, 1677MD User Manual

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Operating/Safety Instructions
Consignes de fonctionnement/sécurité Instrucciones de funcionamiento
y seguridad
IMPORTANT: IMPORTANT : IMPORTANTE:
Read Before Using Lire avant usage Leer antes de usar
For English Parlez-vous français? ¿Habla español? See page 2 Voir page 15 Ver página 28
Consumer Information
Renseignement des consommateurs
Información para el consumidor
Toll Free Number: Appel gratuit : Número de teléfono gratuito:
1-877-BOSCH99 (1-877-267-2499) http://www.boschtools.com
1677MD
1677MDT
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Read and understand all instructions. Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
Work Area
Keep your work area clean and well lit.
Cluttered benches and dark areas invite accidents.
Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Power
tools create sparks which may ignite the dust or fumes.
Keep by-standers, children, and visitors away while operating a power tool.
Distractions can cause you to lose control.
Electrical Safety
Grounded tools must be plugged into an outlet properly installed and grounded in accordance with all codes and ordinances. Never remove the grounding prong or modify the plug in any way. Do not use any adaptor plugs. Check with a qualified electrician if you are in doubt as to whether the outlet is properly grounded. If the tools should electrically
malfunction or break down, grounding provides a low resistance path to carry electricity away from the user. Improper grounding can shock, burn or electrocute. Grounded tools are equipped with three conductor cord and three prong type plugs.
Before plugging in the tool be certain the outlet voltage supplied is within the voltage marked on the nameplate. Do not use “AC only” rated tools with a DC power supply.
Avoid body contact with grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased
risk of electric shock if your body is grounded. If operating the power tool in damp locations is unavoidable, a Ground Fault Circuit Interrupter must be used to supply the power to your tool. Electrician’s rubber gloves and footwear will further enhance your personal safety.
Don't expose power tools to rain or wet conditions. Water entering a power tool will
increase the risk of electric shock.
Do not abuse the cord. Never use the cord to carry the tools or pull the plug from an outlet. Keep cord away from heat, oil, sharp edges or moving parts. Replace damaged cords immediately.
Damaged cords increase the risk of electric shock.
When operating a power tool outside, use an outdoor extension cord marked "W-A" or "W." These cords are rated for outdoor
use and reduce the risk of electric shock. Refer to “Recommended sizes of Extension Cords” in the Accessory section of this manual.
Personal Safety
Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while
operating power tools may result in serious personal injury.
Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, clothing, and gloves away from moving parts. Loose clothes, jewelry,
or long hair can be caught in moving parts. Keep handles dry, clean and free from oil and grease.
Avoid accidental starting. Be sure switch is “OFF” before plugging in. Carrying tools
with your finger on the switch or plugging in tools that have the switch “ON” invites accidents.
Remove adjusting keys or wrenches before turning the tool “ON”. A wrench or
a key that is left attached to a rotating part of the tool may result in personal injury.
Do not overreach. Keep proper footing and balance at all times. Proper footing
and balance enables better control of the tool in unexpected situations.
Use safety equipment. Always wear eye protection. Dust mask, non-skid safety
shoes, hard hat, or hearing protection must be used for appropriate conditions.
!
WARNING
Power Tool Safety Rules
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Safety Rules for Circular Saws
Tool Use and Care
Use clamps or other practical way to secure and support the workpiece to a stable platform. Holding the work by hand
or against your body is unstable and may lead to loss of control.
Do not force tool. Use the correct tool for your application. The correct tool will do
the job better and safer at the rate for which it is designed.Do not use tool if switch does not turn it “ON” or “OFF”. Any tool that cannot be controlled with the switch is dangerous and must be repaired.
Disconnect the plug from the power source before making any adjustments, changing accessories, or storing the tool.
Such preventive safety measures reduce the risk of starting the tool accidentally.
Store idle tools out of reach of children and other untrained persons. Tools are
dangerous in the hands of untrained users.
Maintain tools with care. Keep cutting tools sharp and clean. Properly maintained
tools, with sharp cutting edges are less likely to bind and are easier to control. Any alteration or modification is a misuse and may result in a dangerous condition.
Check for misalignment or binding of moving parts, breakage of parts, and any
other condition that may affect the tools operation. If damaged, have the tool serviced before using. Many accidents are
caused by poorly maintained tools. Develop a periodic maintenance schedule for your tool.
Use only accessories that are recommended by the manufacturer for your model. Accessories that may be
suitable for one tool, may become hazardous when used on another tool.
Service
Tool service must be performed only by qualified repair personnel. Service or
maintenance performed by unqualified personnel could result in a risk of injury. For example: internal wires may be misplaced or pinched, safety guard return springs may be improperly mounted.
When servicing a tool, use only identical replacement parts. Follow instructions in the Maintenance section of this manual.
Use of unauthorized parts or failure to follow Maintenance Instructions may create a risk of electric shock or injury. Certain cleaning agents such as gasoline, carbon tetrachloride, ammonia, etc. may damage plastic parts.
Keep hands away from cutting area and blade.
Keep your second hand on auxiliary handle, or motor housing. If both hands are holding
the saw, they cannot be cut by the blade. Hold the saw firmly to prevent loss of control. Figures in this manual illustrate typical hand support of the saw. NEVER place your hand behind the saw blade since kickback could cause the saw to jump backwards over your hand.
Keep your body positioned to either side of the saw blade, but not in line with the saw blade. KICKBACK could cause the saw to
jump backwards. (See “Causes and Operator Prevention of Kickback.”)
Do not reach underneath the work. The guard cannot protect you from the blade below the work. Do not attempt to remove cut
material when blade is moving.
Check lower guard for proper closing before each use. Do not operate saw if lower guard does not move freely and close instantly. Never clamp or tie the lower guard into the open position. If saw is accidentally dropped,
lower guard may be bent. Raise the lower guard only with the Lower Guard Lift Lever and make sure it moves freely and does not touch the blade or any other part, in all angles and depths of cut.
DANGER
!
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Check the operation of the lower guard spring. If the guard and the spring are not operating properly, they must be serviced before use. Lower guard may operate
sluggishly due to damaged parts, gummy deposits, or a buildup of debris. Disconnect the
plug from power source. Periodically remove the blade, clean the upper, lower guards and the hub area with kerosene and wipe it dry, or blow it clean with compressed air.
Lower guard should be retracted manually only for special cuts such as “Pocket Cuts” and “Compound Cuts”. Raise lower guard by Lower Guard Lift Lever. As soon as blade
enters the material, lower guard must be released. For all other sawing, the lower guard should operate automatically.
Always observe that the lower guard is covering the blade before placing saw down on bench or floor. An unprotected, coasting
blade will cause the saw to walk backwards, cutting whatever is in its path. Be aware of the time it takes for the blade to stop after switch is released.
NEVER hold piece being cut in your hands or across your leg. It is important to support
the work properly to minimize body exposure, blade binding, or loss of control.
Hold tool by the insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or it own cord. Contact with a "live" wire will also
make exposed metal parts of the tool “live” and shock the operator.
When ripping always use a rip fence or straight edge guide. This improves accuracy
of cut and reduces the chance for blade binding.
Always use blades with correct size and shape (diamond vs. round) arbor holes.
Blades that do not match the mounting hardware of the saw will run eccentrically, causing loss of control and will not allow proper vari-torque engagement.
Never use damaged or incorrect blade washers or bolts. The blade washers and bolt
were specially designed for your saw, for optimum performance and safety of operation.
The blade washers and the bolt on your saw have been designed to work as a “VARI­TORQUE CLUTCH”. Understand the operation and settings of the VARI-TORQUE CLUTCH, because the proper setting of the CLUTCH,
combined with firm handling of the saw will allow you to control KICKBACK.
Do not run the saw while carrying it at your side. Lower guard may be opened by a contact with your clothing. Accidental contact
with the spinning saw blade could result in serious personal injury.
Depending upon use, the switch may not last the life of the saw. If the switch should fail in the “OFF” position, the saw may not start. If it should fail while the saw is running, the saw may not shut off. If either
occurs, unplug the saw immediately and do not use until repaired.
This circular saw should not be mounted to a table and converted to a table saw. Circular
saws are not designed or intended to be used as table saws.
CAUSES AND OPERATOR PREVENTION OF
KICKBACK:
Kickback is a sudden reaction to a pinched, bound or misaligned saw blade, causing an uncontrolled saw to lift up and out of the workpiece toward the operator.
When the blade is pinched or bound tightly by the kerf closing down, the blade stalls and the motor reaction drives the unit rapidly back toward the operator.
If the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the blade can dig into the top surface of the wood causing the blade to climb out of the kerf and jump back toward the operator.
Kickback is the result of tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below:
VARI-TORQUE
CLUTCH
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Maintain a firm grip with both hands on the saw and position your body and arm to allow you to resist KICKBACK forces.
KICKBACK forces can be controlled by the operator, if proper precautions are taken.
When blade is binding, or when interrupting a cut for any reason, release the trigger and hold the saw motionless in the material until the blade comes to a complete stop. Never attempt to remove the saw from the work or pull the saw backward while the blade is in motion or KICKBACK may occur. Investigate
and take corrective action to eliminate the cause of blade binding. Wet lumber, green
lumber or pressure treated lumber require special attention during cutting operation to prevent KICKBACK. Avoid cutting nails. Inspect for and remove all nails from lumber before cutting.
When restarting a saw in a workpiece, center the saw blade in the kerf and check that saw teeth are not engaged into the material. If saw blade is binding, it may walk up
or KICKBACK from the workpiece as the saw is restarted.
Support large panels to minimize the risk of blade pinching and KICKBACK. Large panels
tend to sag under their own weight. Supports must be placed under the panel on both sides, near the line of cut and near the edge of the panel. See “Cutting Large Sheets” in this
manual.
Do not use dull or damaged blade.
Unsharpened or improperly set blades produce narrow kerf causing excessive friction, blade binding and KICKBACK.
Blade depth and bevel adjusting locking knobs must be tight and secure before making cut. If blade adjustment shifts while
cutting, it may cause binding and KICKBACK.
Using the saw with an excessive depth of cut setting increases loading on the unit and susceptibility to twisting of the blade in the kerf. It also increases the surface area of the blade available for pinching under conditions of kerf close down.
Use extra caution when making a “Pocket Cut” into existing walls or other blind areas.
The protruding blade may cut objects that can cause KICKBACK.
Some dust created by
power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known 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, and
• 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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!
WARNING
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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 safer.
Symbol Name Designation/Explanation
V Volts Voltage (potential)
A Amperes Current
Hz Hertz Frequency (cycles per second)
W Watt Power
kg Kilograms Weight
min Minutes Time
s Seconds Time
Diameter Size of drill bits, grinding wheels, etc.
n
0
No load speed Rotational speed, at no load
.../min Revolutions or reciprocation per minute Revolutions, strokes, surface speed,
orbits etc. per minute
0 Off position Zero speed, zero torque...
1, 2, 3, ... Selector settings Speed, torque or position settings.
I, II, III, Higher number means greater speed
Infinitely variable selector with off Speed is increasing from 0 setting
Arrow Action in the direction of arrow
Alternating current Type or a characteristic of current
Direct current Type or a characteristic of current
Alternating or direct current Type or a characteristic of current
Class II construction Designates Double Insulated
Construction tools.
Earthing terminal Grounding terminal
Warning symbol Alerts user to warning messages
Ni-Cad RBRC seal Designates Ni-Cad battery recycling
program
Symbols
0
This symbol designates that this tool is listed by Underwriters Laboratories.
This symbol designates that this tool is listed by the Canadian Standards Association.
This symbol designates that this tool is listed to Canadian Standards by Underwriters Laboratories.
T
his symbol designates that this tool complies to NOM Mexican Standards.
This symbol designates that this tool is listed by Underwriters Laboratories, and listed to Canadian Standards by Underwriters Laboratories.
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Functional Description and Specifications
Disconnect the plug from the power source before making any assembly, adjustments or changing accessories. Such preventive safety
measures reduce the risk of starting the tool accidentally.
!
WARNING
Circular Saw
FIG. 1
Blade 7-1/4" Maximum Capacities Blade arbor hole Diamond Depth of cut at 90° 2-3/8"
Depth of cut at 45° 1-15/16" Depth of cut at 50° 1-13/16"
NOTE: For tool specifications refer to the nameplate on your tool.
DEPTH ADJUSTMENT
LEVER
LOWER GUARD
LIFT LEVER
LOWER GUARD
CALIBRATED
BEVEL
QUADRANT
BEVEL
ADJUSTMENT
LEVER
UPPER
GUARD
AUXILIARY
HANDLE
TRIGGER
SWITCH
SAW HOOK
To use, simply lift up hook
until it snaps into the
open position.
When not in use, always
lower hook until it snaps
into the closed position.
FOOT
LOCK
BUTTON
OIL
PLUG
ALIGNMENT
SCREW
45º
STOP
SPRING
CALIBRATED
DEPTH BRACKET
Calibrated For
Standard Lumber Sizes
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Assembly
ATTACHING THE BLADE
Disconnect the plug from the power source before
making any assembly, adjustments or changing accessories. Such preventive
safety measures reduce the risk of starting the tool accidentally.
1. Press the lock button and turn wrench until lock button engages. Saw shaft is now locked. Continue to depress button, turn wrench clockwise and remove BLADE STUD and OUTER WASHER (Fig. 2).
2. Retract the lower guard all the way up into the upper guard. While retracting the lower guard, check operation and condition of the LOWER GUARD SPRING.
3. Make sure the saw teeth and arrow on the blade point in the same direction as the arrow on the lower guard.
4. Slide blade through slot in the foot and mount it against the INNER WASHER on the shaft. Be sure the large diameter of the INNER and OUTER washers lay flush against the blade.
5. Reinstall OUTER WASHER. First tighten BLADE STUD finger tight, then TIGHTEN BLADE STUD 1/8 TURN (45˚) WITH THE WRENCH PROVIDED.
Do not use wrenches with longer handles, since it may lead to over tightening of the blade stud.
VARI-TORQUE CLUTCH
This clutching action is provided by the friction of the OUTER WASHER against the BLADE and permits the blade shaft to turn when the blade encounters excessive resistance. When the BLADE STUD is properly tightened (as described in No. 5 of Attaching The Blade), the blade will slip when it encounters excessive resistance, thus reducing saw’s tendency to KICKBACK.
One setting may not be sufficient for cutting all materials. If excessive blade slippage occurs, tighten the blade stud a fraction of a turn more (less than 1/8 turn). OVERTIGHTENING THE BLADE STUD NULLIFIES THE EFFECTIVE­NESS OF THE CLUTCH.
!
WARNING
Tighten
Loosen
OUTER WASHER
Large Diameter
Faces Blade
INNER WASHER
Large Diameter
Faces Blade
LOWER GUARD
BLADE
STUD
BLADE
LOWER GUARD SPRING
UPPER
GUARD
FIG. 2
LOCK
BUTTON
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DIRECT CORD CONNECT
SYSTEM HAS BEEN CONFIGURED TO BE USED WITH 12AWG SJ CORD, MAXIMUM LENGTH OF 50 FEET. INSPECT THE CORD, DO NOT USE IF DAMAGED.
1. Loop cord as shown in figure A.
2. Insert looped end of cord through slot in handle and loop cord into channel provided in handle as shown figure. B).
ATTENTION: before inserting plug into handle, always make sure you leave enough cord at plug end to avoid tension on plug when inserted into tool.
3. Push end of plug through spring clip and into female outlet in handle as shown below .
4 To remove plug from tool, simply remove from outlet and pull away from spring clip.
NOTE: If the spring clip does not securely hold the plug it may be necessary to lightly squeeze the clip together with a pliers.
Installing Power Cord
FIG. A
FIG. B
!
WARNING
SPRING CLIP
SPRING CLIP
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90° CUTTING ANGLE CHECK
Disconnect plug from power source. Set foot to maximum depth of cut setting. Loosen bevel adjustment lever, set to 0° on quadrant, retighten bevel adjustment lever first, then the depth adjustment lever and check for 90° angle between the blade and bottom plane of foot with a square (Fig. 4). Make adjustments by turning the small alignment screw from bottom side of foot, if necessary (Fig. 4).
BEVEL ADJUSTMENT
Disconnect plug from power source. The foot can be adjusted up to 45° by loosening the bevel adjustment lever at the front of the saw and aligning foot to desired angle on calibrated quadrant. To maintain adjustment, Always tighten bevel adjustment first, then the depth adjustment lever (Fig. 5).
For 50° cuts, loosen bevel adjustment lever, depress 45° stop spring, adjust foot to 50° and tighten lever (Fig. 5). Because of the increased amount of blade engagement in the work and decreased stability of the foot, blade
binding may occur. Keep the saw steady and the foot firmly on the workpiece.
DEPTH ADJUSTMENT
Disconnect plug from power source. Loosen the depth adjustment lever located between the guard and handle of saw. Hold the foot down with one hand and raise or lower saw by the handle. Tighten lever at the depth setting desired. Check desired depth (Fig. 3).
Not more than one tooth length of the blade should extend below the material to be cut, for minimum splintering (Fig. 3).
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Operating Instructions
LINE GUIDE
For a straight 90° cut, use the large notch in the foot. For 45° bevel cuts, use the small notch (Fig. 6). The cutting guide notch will give an approximate line of cut. Make sample cuts in scrap lumber to verify actual line of cut. This will be helpful because of the number of different blade types and thicknesses available. To ensure minimum splintering on the good side of the material to be cut, face the good side down.
BLADE
90°
FOOT
BEVEL
ADJUSTMENT
LEVER
QUADRANT
FIG. 4
QUADRANT
BEVEL
ADJUSTMENT
LEVER
FIG. 5
45° STOP
SPRING
FIG. 6
FOOT
45° / 50° BEVEL CUTS
90° VERTICAL CUTS
PUSH
45°STOP
SPRING IN
DIRECTION
OF ARROW
FOR 50°
BEVEL
ADJUSTMENT
FIG. 3
DEPTH ADJUSTMENT
LEVER
ONE TOOTH LENGTH SHOULD
PENETRATE WOOD FOR MINIMUM SPLINTERING
ALIGNMENT
SCREW
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SWITCH When starting the tool, hold it with both hands.
The torque from the motor can cause the tool to twist.
To turn tool “ON”, squeeze the trigger switch. To turn the tool “OFF”, release the trigger switch, which is spring loaded and will return to the off position automatically.
Your saw should be running at full speed BEFORE starting the cut, and turned off only AFTER completing the cut. To increase switch life, do not turn switch on and off while cutting.
GENERAL CUTS
Always hold the saw handle with one hand and the auxiliary handle or housing with the other.
Always be sure either hand does not interfere with the
free movement of the lower guard.
Maintain a firm grip and operate the switch with a decisive action. Never force the saw. Use light and continuous pressure.
After completing a cut and
the trigger has been released, be aware of the necessary time it takes for the blade to come to a complete stop during coast down. Do not allow the saw to brush against your leg or side, since the lower guard is retractable, it could catch on your clothing and expose the blade. Be aware of the necessary blade exposures that exist in both the upper and lower guard areas.
When cutting is interrupted, to resume cutting: squeeze the trigger and allow the blade to reach full speed, re-enter the cut slowly and resume cutting.
When cutting across the grain, the fibers of the wood have a tendency to tear and lift. Advancing the saw slowly minimizes this effect. For a finished cut, a cross cut blade or miter blade is recommended.
CUTTING MASONRY/METAL
This tool is not recommended for continuous and general usage with metal or masonry cut­off wheels. If you use your saw for cutting these materials, use the appropriate wheel for the material being cut.
When cutting masonry, do not cut a depth of more than 1/4 inch (6 mm). Make successive passes to achieve desired depth. Apply a
light forward pressure. Do not overload motor. Disconnect plug from power source and clean dust from air vents frequently. Metal cutting is done at full depth.
Clean guards frequently to assure a rapid return of
lower guard. The lower guard may become
sluggish when cutting masonry materials.
Abrasive Cut Off Wheels
must have a maximum safe operating speed greater than the “no load RPM” marked on the tool’s nameplate. Wheels running over the rated
speed can fly apart and cause injury.
Do not use the abrasive
cut off wheel near flammable materials. Sparks from the
wheel could ignite these materials.
This machine is not
intended to be used with Wet Diamond Wheels. Using water or other
liquid coolants with this machine may result in electrocution or shock. Use of Dry Diamond Wheels is acceptable.
POCKET CUTS
Disconnect the plug from the power source before making adjustments. Set depth adjust­ment according to material to be cut. Tilt saw forward with cutting guide notch lined up with the line you’ve drawn. Raise the lower guard, using lift lever and hold the saw by the front and rear handles (Fig. 7).
With the blade just clearing the material to be cut, start the motor. Gradually lower the back end of saw using the front end of the foot as the hinge point.
As blade starts cutting the
material, release the lower guard immediately. When the foot rests flat on
the surface being cut, proceed cutting in forward direction to end of cut.
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!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
LOWER GUARD
LIFT LEVER
LINE
GUIDE
FOOT
FIG. 7
!
WARNING
!
WARNING
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Allow blade to come to a
complete stop before lifting the saw from cut. Also, never pull the saw backward since blade will climb out of the material and KICKBACK will occur.
Turn saw around and finish the cut in the normal manner, sawing forward. If corners of your pocket cut are not completely cut through, use a jigsaw or hand saw to finish the corners.
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RIP CUTS
The combination blade provided with your saw is for both cross cuts and rip cuts. Ripping is cutting lengthwise with the grain of the wood. Rip cuts are easy to do with a rip fence (Fig. 10). Rip Fence is available as an accessory (not included). To attach fence, insert fence through slots in foot to desired width as shown and secure with the wing nut (not included).
RIP BOARD GUIDE
When rip cutting large sheets, the rip fence may not allow the desired width of cut. Clamp or nail a straight piece of 1" (25 mm) lumber to the sheet as a guide (Fig. 11). Use the right side of the foot against the board guide.
FIG. 10
FIG. 11
RIP FENCE
DESIRED
WIDTH OF
CUT
DESIRED
LINE OF CUT
RIP
BOARD
GUIDE
CUTTING LARGE SHEETS
Large sheets and long boards sag or bend, depending on support. If you attempt to cut without leveling and properly supporting the piece, the blade will tend to bind, causing KICK­BACK and extra load on the motor (Fig. 8).
Support the panel or board close to the cut, as shown in (Fig. 9). Be sure to set the depth of the cut so that you cut through the sheet or board only and not the table or work bench. The two-by-fours used to raise and support the work should be positioned so that the broadest sides support the work and rest on the table or bench. Do not support the work with the narrow sides as this is an unsteady arrangement. If the sheet or board to be cut is too large for a table or work bench, use the supporting two-by-fours on the floor and secure.
RIGHT
FIG. 8
WRONG
FIG. 9
!
WARNING
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Service
Preventive maintenance
performed by unauthorized personnel may result in misplacing of internal wires and components which could cause serious hazard. We
recommend that all tool service be performed by a Bosch Factory Service Center or Authorized Bosch Service Station.
TOOL LUBRICATION
Your Bosch tool has been properly lubricated and is ready to use. However it is recommended that the gears be relubricated only with Bosch lubricant: WD7LUB or Skil
80111.
Always check the oil level before using the saw. To check and add oil: Remove plug from power source and place the saw’s foot on a horizontal surface. Remove oil plug using the same wrench used to remove the saw blade. The oil level should never be below bottom threads in the housing. When adding oil, fill until oil starts to run out of oil hole at arrow on housing and replace oil plug.
NOTE: If oil is extra dirty or thick, replace the plug and run the saw for one minute to warm up the oil. Then remove oil plug and turn saw upside down, to remove all oil. Fill housing with kerosene. Replace plug and run for one minute to flush out the gear housing. Drain out the kerosene and add fresh Bosch lubricant. With a new saw, change the oil after the first ten hours of use.
CARBON BRUSHES
The brushes and commutator in your tool have been engineered for many hours of dependable service. To maintain peak efficiency of the motor, we recommend every two to six months the brushes be examined. The brushes should be free from dust and dirt. Brushes should be replaced when they have worn down to 3/16" in length. The brushes should slide freely in and out of the holders without sticking.
To check brushes: Disconnect plug from power source. Unscrew the brush caps on the motor housing and lift out the brushes; note
which way they face, so that the brushes can be returned to their original position. Clean the brush holder openings with compressed air or a clean cloth and replace the brushes and caps.
Only genuine Bosch replacement brushes specially designed for your tool should be used.
BEARINGS
After about 300-400 hours of operation, or at every second brush change, the bearings should be replaced at Bosch Factory Service Center or Authorized Bosch Service Station. Bearings which become noisy (due to heavy load or very abrasive material cutting) should be replaced at once to avoid overheating or motor failure.
Cleaning
To avoid accidents always disconnect the tool from
the power supply before cleaning or performing any maintenance. The tool may
be cleaned most effectively with compressed dry air. Always wear safety goggles when
cleaning tools with compressed air.
Ventilation openings and switch levers must be kept clean and free of foreign matter. Do not attempt to clean by inserting pointed objects through openings.
Certain cleaning agents and solvents damage
plastic parts. Some of these are: gasoline,
carbon tetrachloride, chlorinated cleaning solvents, ammonia and household detergents that contain ammonia.
CARE OF BLADES
Blades become dull even from cutting regular lumber. If you find yourself forcing the saw forward to cut instead of just guiding it through the cut, chances are the blade is dull or coated with wood pitch.
When cleaning gum and wood pitch from blade, unplug the saw and remove the blade. Remember, blades are designed to cut, so handle carefully. Wipe the blade with kerosene or similar solvent to remove the gum and pitch. Unless you are experienced in sharpening blades, we recommend you do not try.
!
WARNING
!
WARNING
Maintenance
!
CAUTION
OIL
PLUG
OIL
LEVEL
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Accessories
If an extension cord is
necessary, a cord with adequate size conductors that is capable of carrying the current necessary for your tool must be used. This will prevent
excessive voltage drop, loss of power or overheating. Grounded tools must use 3­wire extension cords that have 3-prong plugs and receptacles.
NOTE: The smaller the gauge number, the heavier
the cord.
RECOMMENDED SIZES OF EXTENSION CORDS
120 VOLT ALTERNATING CURRENT TOOLS
Tool’s
Ampere
Rating
Cord Size in A.W.G.
Wire Sizes in mm
2
3-6 6-8
8-10 10-12 12-16
18 16 16 14 0.75 0.75 1.5 2.5 18 16 14 12 0.75 1.0 2.5 4.0 18 16 14 12 0.75 1.0 2.5 4.0 16 16 14 12 1.0 2.5 4.0 — 14 12 — — — — — —
25 50 100 150 15 30 60 120
Cord Length in Feet Cord Length in Meters
!
WARNING
* Blade * Wrench ** Rip Fence
(*= standard equipment) (**= optional accessories)
The Model 1677MDT is equipped with a “Twist-To-Lock” male connector as shown. Use only a 3-wire extension cord which has a mating “Twist-To-Lock” female connector on one end and a 3-prong grounding plug on the other end. (See Electrical Safety section on page 2 for grounding information.)
TWIST-TO-LOCK CONNECTOR INSTRUCTIONS FOR MODEL 1677MDT ONLY 20 AMP, 125
VOLT “TWIST-TO-LOCK”
NEMA L5-20P
BM 2610917132 10-03 10/28/03 11:07 AM Page 14
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