![Milwaukee Worm Drive Circular Saw Replacement For Model 6378-4 (SER 621A)](images/6378-4.png)
Milwaukee Worm Drive Circular Saw Replacement Parts For Model 6378-4 (SER 621A)
![Milwaukee](images/131_large.png)
Find Milwaukee 6378-4 (SER 621A) Parts By Symptom
Choose a symptom to view parts that fix it.
Won't turn on |
Excessive sparks from motor |
Bad vibration |
Blade wobbles |
Grinding or squealing sound |
Motor spins but blades don't |
Show All Symptoms |
Popular Parts for Milwaukee 6378-4 (SER 621A)
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw Page A Diagram](images/milwaukee/6378-4_(SER_621A)_WW_1.gif)
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 16-74-0171 OEM replacement 220 Volt Armature](images2/photo_not_available.png)
Part Number:16-74-0171
Discontinued
Part Number:06-82-7375
Usually ships in 7 - 12 business days
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 18-74-0141 OEM replacement 220 Volt Field](images2/photo_not_available.png)
Part Number:18-74-0141
Discontinued
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 31-50-0226 OEM replacement Motor Housing Assembly](images2/photo_not_available.png)
Part Number:31-50-0226
Discontinued
Part Number:06-55-0835
Usually ships in 7 - 12 business days
Part Number:23-66-1817
Discontinued
Part Number:06-97-1800
Discontinued
Part Number:31-44-1106
Discontinued
Part Number:06-82-2362
Discontinued
Part Number:22-24-0286
Discontinued
Part Number:34-80-2365
Usually ships in 7 - 12 business days
Part Number:45-36-1010
Discontinued
Part Number:45-06-0280
Usually ships in 7 - 12 business days
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 06-97-2200 OEM replacement Lock Washer](images2/photo_not_available.png)
Part Number:06-97-2200
Usually ships in 7 - 12 business days
Part Number:06-55-1000
Usually ships in 7 - 12 business days
Part Number:28-14-1418
Discontinued
Part Number:31-44-0600
Discontinued
Part Number:06-82-5320
Usually ships in 7 - 12 business days
Part Number:06-82-7224
Usually ships in 7 - 12 business days
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 06-95-5690 OEM replacement 3/8-16 X 1/2](images2/photo_not_available.png)
Part Number:06-95-5690
Discontinued
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 45-88-7475 OEM replacement Washer](images2/photo_not_available.png)
Part Number:45-88-7475
Discontinued
Part Number:32-91-0115
Usually ships in 7 - 12 business days
Part Number:45-36-1020
Usually ships in 7 - 12 business days
Part Number:45-88-0601
Usually ships in 7 - 12 business days
Part Number:06-57-5050
Discontinued
Part Number:43-44-0240
Discontinued
Part Number:31-15-0115
Discontinued
Part Number:06-82-5320
Usually ships in 7 - 12 business days
Part Number:42-38-0222
Usually ships in 7 - 12 business days
Part Number:42-76-0470
Discontinued
Part Number:32-90-0107
Discontinued
Part Number:38-50-5191
Discontinued
Part Number:45-06-0260
Discontinued
Part Number:34-80-2960
Usually ships in 7 - 12 business days
Part Number:02-04-1748
Discontinued
Part Number:28-53-0270
Usually ships in 7 - 12 business days
Part Number:34-40-2120
Discontinued
Part Number:34-60-2150
Usually ships in 7 - 12 business days
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 06-75-0478 OEM replacement 3/8-24 L.H. Blade Screw](images2/photo_not_available.png)
Part Number:06-75-0478
Discontinued
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 06-92-2520 OEM replacement Stud](images2/photo_not_available.png)
Part Number:06-92-2520
Discontinued
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 22-64-0850 OEM replacement Cord Set](images2/photo_not_available.png)
Part Number:22-64-0850
Discontinued
Part Number:22-84-0700
Discontinued
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 34-40-0226 OEM replacement O-ring](images2/photo_not_available.png)
Part Number:34-40-0226
Usually ships in 7 - 12 business days
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 45-88-0610 OEM replacement Washer](images2/photo_not_available.png)
Part Number:45-88-0610
Discontinued
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 40-50-8325 OEM replacement Spring](images2/photo_not_available.png)
Part Number:40-50-8325
Discontinued
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 45-08-0300 OEM replacement Lockshaft](images2/photo_not_available.png)
Part Number:45-08-0300
Discontinued
Part Number:34-60-0525
Usually ships in 7 - 12 business days
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 44-40-0650 OEM replacement Spindle Lock Nut](images2/photo_not_available.png)
Part Number:44-40-0650
Discontinued
![Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw 45-88-7476 OEM replacement Washer](images2/photo_not_available.png)
Part Number:45-88-7476
Discontinued