Milwaukee 0730-20 User manual

OPERATOR'S MANUAL
TO REDUCE THE RISK OF INJURY, USER MUST READ AND UNDERSTAND OPERATOR'S
MANUAL.
Cat. No.
No de cat.
0730-20
28 VOLT CIRCULAR SAW

3
GENERAL POWER TOOL SAFETY WARNINGS
WARNING READ ALL SAFETY WARNINGS AND ALL INSTRUCTIONS. Failure to
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all warnings and instructions for future reference. The term “power tool” in the warn-
ings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.
BATTERY TOOL USE AND CARE
PERSONAL SAFETY
WORK AREA SAFETY
ELECTRICAL SAFETY
.HHSZRUNDUHDFOHDQDQGZHOOOLW Cluttered or
dark areas invite accidents.
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SKHUHVVXFKDVLQWKHSUHVHQFHRIÀDPPDEOH
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
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operating a power tool. Distractions can cause
you to lose control.
3RZHUWRROSOXJVPXVWPDWFKWKHRXWOHW1HYHU
modify the plug in any way. Do not use any
adapter plugs with earthed (grounded) power
tools. 8QPRGL¿HGSOXJVDQGPDWFKLQJRXWOHWVZLOO
reduce risk of electric shock.
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surfaces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric
shock if your body is earthed or grounded.
'RQRWH[SRVHSRZHUWRROVWRUDLQRUZHWFRQ-
ditions. Water entering a power tool will increase
the risk of electric shock.
'RQRWDEXVHWKHFRUG1HYHUXVHWKHFRUGIRU
carrying, pulling or unplugging the power tool.
.HHS FRUG DZD\ IURP KHDW RLO VKDUS HGJHV
RUPRYLQJSDUWVDamaged or entangled cords
increase the risk of electric shock.
:KHQRSHUDWLQJDSRZHUWRRORXWGRRUVXVHDQ
H[WHQVLRQFRUGVXLWDEOHIRURXWGRRUXVHUse of
a cord suitable for outdoor use reduces the risk of
electric shock.
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XQDYRLGDEOHXVHDJURXQGIDXOWFLUFXLWLQWHU-
rupter (GFCI) protected supply. Use of an GFCI
reduces the risk of electric shock.
attached to a rotating part of the power tool may
result in personal injury.
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balance at all times. This enables better control
of the power tool in unexpected situations.
'UHVVSURSHUO\'RQRWZHDUORRVHFORWKLQJRU
MHZHOOHU\.HHS\RXUKDLUFORWKLQJDQGJORYHV
DZD\IURPPRYLQJSDUWV Loose clothes, jewel-
lery or long hair can be caught in moving parts.
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GXVWH[WUDFWLRQDQGFROOHFWLRQIDFLOLWLHVHQVXUH
these are connected and properly used. Use of
dust collection can reduce dust-related hazards.
POWER TOOL USE AND CARE
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power tool for your application. The correct
power tool will do the job better and safer at the
rate for which it was designed.
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turn it on and off. Any power tool that cannot be
controlled with the switch is dangerous and must
be repaired.
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DQGRU WKH EDWWHU\ SDFN IURP WKH SRZHU WRRO
EHIRUHPDNLQJDQ\DGMXVWPHQWVFKDQJLQJDF-
cessories, or storing power tools. Such preven-
tive safety measures reduce the risk of starting the
power tool accidentally.
6WRUHLGOHSRZHUWRROVRXWRIWKHUHDFKRIFKLO-
dren and do not allow persons unfamiliar with
the power tool or these instructions to operate
the power tool. Power tools are dangerous in the
hands of untrained users.
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RUELQGLQJRIPRYLQJSDUWVEUHDNDJHRISDUWV
and any other condition that may affect the
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power tool repaired before use. Many accidents
are caused by poorly maintained power tools.
.HHS FXWWLQJ WRROV VKDUS DQG FOHDQ Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
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etc. in accordance with these instructions, tak-
ing into account the working conditions and
the work to be performed. Use of the power tool
for operations different from those intended could
result in a hazardous situation.
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common sense when operating a power tool.
Do not use a power tool while you are tired or
XQGHUWKHLQÀXHQFHRIGUXJVDOFRKRORUPHGL-
cation. A moment of inattention while operating
power tools may result in serious personal injury.
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wear eye protection. Protective equipment such
as dust mask, non-skid safety shoes, hard hat, or
hearing protection used for appropriate conditions
will reduce personal injuries.
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switch is in the off-position before connecting
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up or carrying the tool. Carrying power tools with
\RXU¿QJHURQWKHVZLWFKRUHQHUJLVLQJSRZHUWRROV
that have the switch on invites accidents.
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turning the power tool on. A wrench or a key left
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the manufacturer. A charger that is suitable for
RQHW\SHRIEDWWHU\SDFNPD\FUHDWHDULVNRI¿UH
when used with another battery pack.
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nated battery packs. Use of any other battery
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4
SPECIFIC SAFETY RULES
SERVICE
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IURP RWKHU PHWDO REMHFWV OLNH SDSHU FOLSV
coins, keys, nails, screws, or other small metal
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terminal to another. Shorting the battery terminals
WRJHWKHUPD\FDXVHEXUQVRUD¿UH
8QGHUDEXVLYHFRQGLWLRQVOLTXLGPD\EHHMHFW-
HGIURPWKHEDWWHU\DYRLGFRQWDFW,IFRQWDFW
DFFLGHQWDOO\RFFXUVÀXVKZLWKZDWHU,IOLTXLG
contacts eyes, additionally seek medical help.
Liquid ejected from the battery may cause irritation
or burns.
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repair person using only identical replacement
parts. This will ensure that the safety of the power
tool is maintained.
Cutting procedures
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DUHD DQG WKH EODGH .HHS \RXU VHFRQG KDQG
RQDX[LOLDU\KDQGOHRUPRWRUKRXVLQJIf both
hands are holding the saw, they cannot be cut by
the blade.
'RQRWUHDFKXQGHUQHDWKWKHZRUNSLHFHThe
guard cannot protect you from the blade below the
workpiece.
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the workpiece. Less than a full tooth of the blade
teeth should be visible below the workpiece.
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across your leg. Secure the workpiece to a
stable platform. It is important to support the work
properly to minimize body exposure, blade binding,
or loss of control.
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surfaces only, when performing an operation
where the cutting tool may contact hidden
wiring. Contact with a “live” wire will also make
exposed metal parts of the power tool “live” and
could give the operator an electric shock.
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edge guide. This improves the accuracy of cut and
reduces the chance of blade binding.
$OZD\VXVHEODGHVZLWKFRUUHFWVL]HDQGVKDSH
GLDPRQGYHUVXVURXQGRIDUERXUKROHVBlades
that do not match the mounting hardware of the
saw will run eccentrically, causing loss of control.
1HYHUXVHGDPDJHGRULQFRUUHFWEODGHZDVKHUV
or bolt. The blade washers and bolt were specially
designed for your saw, for optimum performance
and safety of operation.
Further safety instructions for all saws
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– Kickback is a sudden reaction to a pinched,
bound or misaligned saw blade, causing an un-
controlled 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 saw misuse and/or incor-
rect operating procedures or conditions and can
be avoided by taking proper precautions as given
below:
0DLQWDLQ D ¿UP JULS ZLWK ERWK KDQGV RQ WKH
saw and position your arms to resist kickback
forces. Position your body to either side of the
blade, but not in line with the blade. Kickback
could cause the saw to jump backwards, but kick-
back forces can be controlled by the operator, if
proper precautions are taken.
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a cut for any reason, release the trigger and
hold the saw motionless in the material until
WKHEODGHFRPHVWRDFRPSOHWHVWRS1HYHUDW-
WHPSWWRUHPRYHWKHVDZIURPWKHZRUNRUSXOO
the saw backward while the blade is in motion
or kickback may occur. Investigate and take
corrective actions to eliminate the cause of blade
binding.
:KHQUHVWDUWLQJDVDZLQWKHZRUNSLHFHFHQWUH
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.
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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.
'RQRWXVHGXOORUGDPDJHGEODGHVUnsharp-
ened or improperly set blades produce narrow
kerf causing excessive friction, blade binding and
kickback.
%ODGHGHSWKDQGEHYHODGMXVWLQJORFNLQJOHYHUV
must be tight and secure before making cut. If
blade adjustment shifts while cutting, it may cause
binding and kickback.
8VHH[WUDFDXWLRQZKHQVDZLQJLQWRH[LVWLQJ
walls or other blind areas. The protruding blade
may cut objects that can cause kickback.
Lower guard function
&KHFNORZHUJXDUGIRUSURSHUFORVLQJEHIRUH
each use. Do not operate the saw if lower guard
GRHVQRWPRYHIUHHO\DQGFORVHLQVWDQWO\1HYHU
clamp or tie the lower guard into the open
position. If saw is accidentally dropped, lower
guard may be bent. Raise the lower guard with the
retracting handle and make sure it moves freely
and does not touch the blade or any other part, in
all angles and depths of cut.

5
SPECIFICATIONS
Cat. No. Volts DC No Load RPM %ODGH6L]H Arbor Depth of Cut at 90° Depth of Cut at 45°
0730-20 28 4200 6-1/2" 5/8" 0 to 2-1/8" 0 to 1-9/16"
FUNCTIONAL DESCRIPTION
SYMBOLOGY
1. Front handle
2. Lock-off button
3. Trigger
4. Handle
5. Upper guard
6. Shoe
7. Lower guard lever
8. Lower guard
9. Blade bolt
 %ODGHÀDQJH
16
15
18
14
17
19
20
8
76
5
4
3
1
11
2
9
10
12
13
11. Blade
12. Sight line
13. Spindle lock button
14. Wrench
15. Bevel pointer
16. Bevel adjusting knob
17. Bevel scale
18. Rip fence adjusting
knob
19. Rip fence slot
20. Depth adjusting lever
Use only MILWAUKEE M28™ or V28®battery packs.
Volts
Direct Current
No Load Revolutions per
Minute (RPM)
Underwriters Laboratories, Inc.
United States and Canada
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If the guard and the spring are not operating
SURSHUO\ WKH\ PXVW EH VHUYLFHG EHIRUH XVH
Lower guard may operate sluggishly due to dam-
aged parts, gummy deposits, or a build-up of
debris.
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only for special cuts such as “plunge cuts”
and “compound cuts.” Raise lower guard by
retracting handle and as soon as blade enters the
material, the lower guard must be released. For
all other sawing, the lower guard should operate
automatically.
$OZD\VREVHUYH WKDW WKHORZHU JXDUG LVFRY-
ering the blade before placing saw down on
EHQFKRUÀRRU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.
0DLQWDLQ ODEHOV DQG QDPHSODWHV These carry
important information. If unreadable or missing,
contact a MILWAUKEE service facility for a free
replacement.
:$51,1* 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:
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FU\VWDOOLQHVLOLFDIURPEULFNVDQGFHPHQWDQGRWKHU
masonry products, and
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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 spe-
FLDOO\GHVLJQHGWR¿OWHURXWPLFURVFRSLFSDUWLFOHV
CUS

6
ASSEMBLY
WARNING Recharge only with the
FKDUJHUVSHFL¿HGIRUWKHEDWWHU\)RUVSHFL¿F
charging instructions, read the operator’s
manual supplied with your charger and
battery.
WARNING $OZD\V UHPRYH EDWWHU\
SDFN EHIRUH FKDQJLQJ RU UHPRYLQJ DFFHV-
sories. Only use accessories specifically
recommended for this tool. Others may be
KD]DUGRXV
5HPRYLQJ%DWWHU\3DFNIURP7RRO
Push in the release buttons and pull the battery
pack away from the tool.
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To insert the battery pack onto the tool, slide the
pack onto the body of the tool. Make sure it latches
securely into place.
6HOHFWLQJ%ODGH
Always use sharp blades. Dull blades tend to
overload the tool and increase the chance of
KICKBACK (see "Causes and Operator Prevention
of KICKBACK"). Only use thin kerf blades with a
maximum safe operating speed greater than the no
load RPM marked on the tool's nameplate. Read
the blade manufacturer's instructions before use.
Do not use any type of abrasive cut-off wheel or
dry diamond cutting blades. Use the correct blade
type for your application. Using the wrong blade
may result in reduced performance or damage to
the blade. Do not use blades that are cracked or
have broken teeth.
Checking the Operation of the Lower Guard
Check the operation and condition of the lower
guard lever. If the guard and the lever are not op-
erating properly, they must be serviced before use.
Lower guard may operate sluggishly due to dam-
aged parts, gummy deposits, or a buildup of debris.
1. Unplug tool before checking the lower guard.
2. Place the tool on its side.
NOTE: This procedure will not show proper lower
guard operation if the tool is not on its side.
3. Grasp the lower guard by the sides and push it
all the way back into the blade housing.
4. Release the lower guard.
,IWKHJXDUGLPPHGLDWHO\VSULQJVEDFNLQWRSODFH
it is working correctly and you may continue with
use.
,I WKHJXDUG GRHVQRW LPPHGLDWH VSULQJ EDFN
into place, clean the upper and lower guards
to remove all chips and debris. Then, check
the operation again by starting with step 1.
,I WKH JXDUGVWLOO GRHV QRWLPPHGLDWHO\ VSULQJ
back into place, contact a MILWAUKEE service
facility for repairs.
$GMXVWLQJ'HSWK
1. Remove battery pack.
2. To adjust the depth of the cut, hold the saw by
the handle and loosen the depth adjusting lever
by pushing it down toward the shoe (Fig. 1).
3. Raise or lower the shoe to the desired position.
Markings in 1/4" increments are located on the
inner side of the upper guard for depth setting.
For the proper depth setting, the blade should
extend no more than 1/8" to 1/4" below the mate-
rial being cut (Fig. 2).
4. Lift the depth adjusting lever up towards the
motor housing to secure the shoe position.
Bolt
Outer
ÀDQJH
Inner
ÀDQJH
Spindle
Arrow
Fig. 1

Fig. 2
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1. REMOVE BATTERY PACK BEFORE INSTALL-
ING OR REMOVING BLADES.
 3ODFHWKHVDZRQDÀDWVXUIDFHZLWKWKHEODGH
facing upwards. To remove the bolt from the
spindle, push in the spindle lock button. While
holding in the spindle lock button, use the wrench
provided with the tool to turn the bolt clockwise.
5HPRYHWKHEROWDQGEODGHÀDQJH
3. Slide the lower guard lever up to raise the lower
guard. Remove the blade from
the spindle. Always clean the
spindle, upper guard and lower
guard to remove any dirt and
sawdust.
NOTE: Do not remove inner
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blade.
4. To install a blade, place
the blade on the spindle
with the teeth pointing in
the same direction as the
arrow on the lower guard.
Release the lower guard
lever.
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tighten the bolt.
6. While holding in the spindle lock button, use the
wrench to turn the bolt counterclockwise and
tighten.

7
OPERATION
WARNING To UHGXFHWKHULVNRILQMXU\
keep hands away from the blade and other
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cally recommended accessories. Others may
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The shoe has been adjusted at the factory to a 90
degree setting. Inspect the saw regularly to make
sure the blade is 90 degrees to the shoe.
1. Remove battery pack.
2. Set the bevel pointer to zero.
3. To make sure the blade is 90 degrees to the
shoe, place saw on the blade side and retract
lower guard. Place a square against the blade
and shoe to inspect the degree setting.
4. To adjust the degree
setting, loosen the bevel
adjusting knob. Turn the
bevel adjustment screw
in or out until the blade is
at a 90 degree angle with
the shoe.
5. Tighten the bevel adjust-
ing knob securely.
WARNING $OZD\V UHPRYH EDWWHU\
SDFN EHIRUH FKDQJLQJ RU UHPRYLQJ DFFHV-
sories. Only use accessories specifically
recommended for this tool. Others may be
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Bevel
Adjustment
Screw
the saw backward while the blade is in motion
or kickback may occur. Investigate and take
corrective actions to eliminate the cause of blade
binding.
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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.
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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.
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ened or improperly set blades produce narrow
kerf causing excessive friction, blade binding and
kickback.
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must be tight and secure before making cut. If
blade adjustment shifts while cutting, it may cause
binding and kickback.
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walls or other blind areas. The protruding blade
may cut objects that can cause kickback.
General Operation
Always clamp the workpiece securely on a saw
horse or bench. See “APPLICATIONS” for the cor-
rect way to support your work in different situations.
1. Draw a cutting line. Place the front of the shoe on
the edge of the workpiece without making blade
contact. Hold the handle with one hand and the
front handle with the other (Fig. 4).
Fig. 4
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– Kickback is a sudden reaction to a pinched,
bound or misaligned saw blade, causing an un-
controlled 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 saw misuse and/or incor-
rect operating procedures or conditions and can
be avoided by taking proper precautions as given
below:
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saw and position your arms to resist kickback
forces. Position your body to either side of the
blade, but not in line with the blade. Kickback
could cause the saw to jump backwards, but kick-
back forces can be controlled by the operator, if
proper precautions are taken.
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a cut for any reason, release the trigger and
hold the saw motionless in the material until
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Fig. 3
4. Tighten the bevel adjusting knob securely.
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1. Remove battery pack.
2. To adjust the angle of the cut, hold the saw by
the handle and loosen the bevel adjusting knob.
3. Hold the front of the shoe and rotate the saw by
the handle to the desired angle as indicated by
the markings on the bevel scale (Fig. 3).

8
5. If making a partial cut, restarting in mid-cut or
correcting direction, allow the blade to come to
a complete stop. To resume cutting, center the
blade in the kerf, back the saw away from cutting
edge a few inches, push the lock-off button down
while pulling the trigger and re-enter the cut slowly.
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and release the trigger immediately. Hold the
saw motionless in the workpiece until the blade
comes to a complete stop.
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closes and the blade comes to a complete stop
before setting the saw down.
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The electric brake engages when the trigger is
released, causing the blade to stop and allowing
you to proceed with your work. Generally, the saw
blade stops within two seconds. However, there
may be a delay between the time you release the
trigger and when the brake engages. Occasionally
the brake may miss completely. If the brake misses
frequently, the saw needs servicing by an autho-
rized MILWAUKEE service facility. The brake is not
a substitute for the guard, and you must always wait
for the blade to stop completely before removing
the saw from the workpiece.
Troubleshooting
If the blade does not follow a straight line:
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object such as a nail or stone, dulling teeth on one
side. The blade tends to cut to the side with the
sharpest teeth.
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If the blade binds, smokes or turns blue from friction:
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Ripping Wood
Ripping is cutting lengthwise with the grain. Select
the proper blade for your job. Use a rip fence for
rips 4" wide or less. To install the rip fence, slide
the bar through the rip fence slot in either side of
the shoe. The width of the cut is the distance from
the inside of the blade to the inside edge of the rip
fence. Adjust the rip fence for the desired width,
and lock the setting by tightening the rip fence
adjusting knob.
When ripping widths greater than 4", clamp or tack
1" lumber to workpiece and use the inside edge of
the shoe as a guide.
Cross-Cutting Wood
Cross-cutting is cutting across the grain. Select the
proper blade for your job. Advance the saw slowly
to avoid splintering the wood.
Fig. 5
Pocket Cutting
Pocket cuts are made in the middle of the work-
piece when it can not be cut from an edge. We
recommend using a Sawzall®reciprocating saw
or jig saw for this type of cut. However, if you must
use a circular saw to make a pocket cut, USE EX-
TREME CAUTION. To maintain control of the saw
during pocket cutting, keep both hands on the saw.
1. Beginning at a corner, line up the sight line with
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the front of the shoe on the workpiece (Fig. 7).
The blade should be just above cutting line, but
not touching it. Raise the lower guard using the
lower guard lever.
APPLICATIONS
WARNING To reduce the risk of elec-
tric shock, check work area for hidden
pipes and wires before making pocket cuts.
Fig. 6
2. Line up the sight line with your cutting line. Posi-
tion your arms and body to resist KICKBACK.
3. To start the saw, push the lock-off button down
while pulling the trigger. Allow the motor to reach
full speed before beginning cut.
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not force the saw through the workpiece. Forcing
a saw can cause KICKBACK.
Cutting Large Panels
Large panels and long boards sag or bend if they
are not correctly supported. If you attempt to
cut without leveling and properly supporting the
workpiece, the blade will tend to bind, causing
KICKBACK.
Support large panels. Be sure to set the depth of
the cut so that you only cut through the workpiece,
not through the supports.

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advance the saw to the far corner (Fig. 9). Re-
lease the trigger and allow the blade to come to
a complete stop before removing it from work-
piece. Repeat the above steps for each side of
the opening. Use a Sawzall® reciprocating saw,
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if they are not completely cut through.
Fig. 7
Fig. 8
Fig. 9
Maintaining Tool
Keep your tool, battery pack and charger in good
repair by adopting a regular maintenance program.
After six months to one year, depending on use,
return the tool, battery pack and charger to A
MILWAUKEE service facility for:
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dles, bearings, housing, etc.)
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operation
If the tool does not start or operate at full power
with a fully charged battery pack, clean the contacts
on the battery pack. If the tool still does not work
properly, return the tool, charger and battery pack,
to a MILWAUKEE service facility for repairs.
MAINTENANCE
Cleaning
Clean dust and debris from charger and tool
vents. Keep tool handles clean, dry and free of oil
or grease. Use only mild soap and a damp cloth
to clean the tool, battery pack and charger since
certain cleaning agents and solvents are harmful
to plastics and other insulated parts. Some of these
include gasoline, turpentine, lacquer thinner, paint
thinner, chlorinated cleaning solvents, ammonia and
household detergents containing ammonia. Never
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Repairs
For repairs, return the tool, battery pack and charger
to the nearest service center.
WARNING To reduce the risk of per-
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tool, battery pack or charger in liquid or allow
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WARNING 7RUHGXFHWKHULVNRILQMXU\
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battery pack from the charger or tool before
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semble the tool, battery pack or charger.
Contact a MILWAUKEE VHUYLFH IDFLOLW\ IRU
ALL repairs.
ACCESSORIES
WARNING $OZD\VUHPRYHEDWWHU\SDFN
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Continuous overloading may cause permanent
damage to tool or battery pack.
2. To start the saw, push the lock-off button down
while pulling the trigger. Allow the motor to reach
full speed before beginning cut. Using the front
of the shoe as a hinge point, gradually lower the
back end of the saw into the workpiece (Fig. 8).
Release the lower guard lever and grasp the
front handle.
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