Operation

Installing Blade

Fig. 4

1.To remove blade bolt from spindle, push in spindle lock button (Fig. 2) while turn- ing bolt clockwise with 6 mm hex wrench (provided with tool) until spindle locks. Remove outer blade washer and spring washer.

Fig. 2
5
3
51.5
2
1
45
0
1
Spindle
lock
button

NOTE: Do not remove inner blade ﬂange. Large diameter of inner ﬂange (Fig. 3) should face the blade.

Fig. 3	Blade
	Outer
	blade
	washer
Inner
blade
ﬂange	Blade
Spring	Blade
washer	bolt

2.Push lower guard lever up to raise lower guard (Fig. 4). Place blade on spindle with teeth pointing the same direction as the arrow on lower guard. Release lower guard lever.

Lower

guard

lever

3.Place outer blade washer, spring washer, and blade bolt on spindle.

4.Push in spindle lock button while turning bolt counterclockwise with 6 mm hex wrench until spindle locks. Tighten bolt securely.

5.To remove blade, reverse the above steps. Always clean dirt and sawdust from spindle, washers, upper guard and lower guard after use.

Adjusting Depth

1.To adjust depth of cut, place saw on edge of workbench and pull up depth adjusting lever.

2.Keeping shoe ﬂat against workbench, raise or lower saw to desired position. Lowering saw will increase depth of cut. Raising saw will decrease depth of cut. For proper depth setting, blade should extend no more than 1/4" below material being cut. Use the depth of cut scale for standard depths.

3.Push down depth adjusting lever to lock. Check to be sure depth adjusting lever is secure.

Adjusting Miter Angle

1.To adjust angle of cut, place saw on edge or workbench and pull up miter adjusting lever.

2.Hold down shoe and slide saw to desired position (up to 45˚) according to markings on miter scale.

3.To increase the angle of cut up to 51.5˚, push in the override button and tip the saw to the desired angle.

4.Push down miter lever to lock. Check angle with a square. Also check to be sure miter adjusting lever is secure before cutting.

WARNING

To reduce the risk of injury, wear safety goggles or glasses with side shields. Unplug the tool before changing accessories or making adjustments.

Preventing Kickback

Kickback is the sudden reaction to a pinched blade, which could cause a saw that is not under control to lift up and out of the work- piece towards the user. Take the precautions below to help prevent kickback.

1.Maintain a ﬁrm grip and correct body po- sition. Position arms and body to control the upward and backward reaction force of kickback (Fig. 5).

Fig. 5

Kickback

2.Keep blades sharp and clean. A sharp blade will tend to cut its way out of a pinching condition. A dull blade produces a narrow kerf (path cut by blade) and is likely to be pinched by the workpiece. Dull or pitch coated blades also tend to encourage the user to force the saw, causing reduced control and blade bind- ing. Any blade with a small set, even though it is sharp, may be likely to kick back (Fig. 6).

Fig. 6	Set

Sharp blade

Dull blade

3.Set the depth of cut for no more than 1/8" to 1/4" greater than the thickness of the stock (Fig. 7). The less blade exposed, the less chance of binding and kickback. Before cutting, be sure depth and miter adjustments are tight.

Fig. 7

1/8" - 1/4"

4.Be cautious of pitchy, knotty, wet or warped stock. These are most likely to create pinching conditions and possible kickback. Do not rip warped lumber. Avoid cutting nails.

5.Support workpiece properly. Improperly supported material can sag or bow, pinch- ing the blade. When cutting down the center of your workpiece, support material on both sides of the cut. Large sheets of thin material such as paneling, formica, etc. must be well supported over their entire length (Fig. 8) (see “Cutting Large Panels”). When cutting the end off of your workpiece, rest the saw on the supported portion outside of the supports and allow the cut off end to fall away (see “General Operation”).

Fig. 8

6.Always allow blade to come to a full stop before removing the saw from the workpiece. Never remove the saw from a cut while the blade is moving. If restarting or correcting direction in mid-cut, allow blade to coast to a stop, back saw up a few inches and center it in the kerf before restarting.

7.Stay alert. Any distraction can cause twisting or binding. Repetitive cuts may lull the user into careless movements.

6577-20, 6477-20, MILWAUKEE HEAVY-DUTY WORM DRIVE SAW specifications

The Milwaukee Heavy-Duty Worm Drive Saw, models 6477-20 and 6577-20, represents an innovative approach to woodworking and cutting projects, offering a blend of power, precision, and performance. Designed for the professional contractor and enthusiastic DIYer alike, these saws are engineered to tackle even the most demanding cutting applications.

One of the standout features of the Milwaukee 6477-20 and 6577-20 is their powerful motor. With a robust 15-amp motor, these saws produce a remarkable amount of torque, enabling users to cut through the toughest materials with ease. Whether it is hardwood, engineered lumber, or thick plywood, the worm drive design offers exceptional cutting efficiency, ensuring smooth and consistent results.

Ergonomically designed, both the 6477-20 and 6577-20 feature an optimized handle grip that promotes comfortable use over extended periods. This design reduces user fatigue while maintaining control, which is crucial for precise cuts on large materials. Additionally, the saws are equipped with a safety brake that stops the blade quickly, enhancing user safety during operation.

Another key characteristic of these models is their bevel capacity. The Milwaukee Heavy-Duty Worm Drive Saws offer bevel cuts up to 51 degrees, allowing for greater versatility in various cutting applications. The positive stops at 45 and 22.5 degrees make it easy to create angled cuts, significantly benefiting frame construction or other specialized projects.

The integrated laser guide system is another advanced technology featured in the 6577-20 model. This system improves cutting accuracy by providing a visual reference to align your cuts, ensuring precision even in challenging lighting conditions. Coupled with a durable blade guard, users can expect both safety and effectiveness while cutting.

Durability is a pillar of the Milwaukee brand, and these worm drive saws are no exception. Constructed with high-quality materials and designed to withstand the rigors of daily job site use, both models come with metal housings that resist damage and improve longevity.

Finally, Milwaukee’s focus on user convenience is evident with features such as an easily accessible depth adjustment lever, aiding in quick and efficient depth setting for varied applications.

In conclusion, the Milwaukee Heavy-Duty Worm Drive Saw, models 6477-20 and 6577-20, delivers outstanding performance and reliability. With a powerful motor, advanced features, and a robust build, these saws are an essential addition to any professional's toolkit. Whether you are framing, roofing, or making custom cuts, these tools are developed to enhance productivity and precision in your work.