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S-7000
33 
DD 
7. STANDARD ADJUSTMENTS
7-8. Adjusting the rotary hook lubrication amount 
CAUTION 
 
Be careful not to touch your fingers or the lubrication amount check sheet against moving parts such as the rotary 
hook or the feed mechanism when checking the amount of oil supplied to the rotary hook, otherwise injury may 
result. 
Use the following procedure to check the amount of oil being supplied to the rotary hook when replacing the rotary hook or 
when changing the sewing speed. 
 
<Checking the lubrication amount> 
1.  Remove the thread from all points from the thread take-up 
to the needle. 
2.  Use the lifting lever to lift the presser foot. 
3. Run the machine at the normal sewing speed for 
approximately 1 minute without sewing any material 
(following the same start/stop pattern as when actually 
sewing). 
4. Place the lubrication amount check sheet (1) underneath 
the rotary hook (2) and hold it there. Then run the sewing 
machine at the normal sewing speed for 8 seconds. (Any 
type of paper can be used as the lubrication amount 
check sheet (1).) 
5. Check the amount of oil which has spattered onto the 
sheet. 
 
 
 
If adjustment is necessary, carry out the following operations 
in “Adjusting the lubrication amount”. 
 
 
 
 
 
 
 
 
 
 
0537D
More oil
Less oil 
Bed 
2304M
5 - 10 mm 
0935M
Correct 
Too much 
Spattered oil 
Too little
Approx. 70 mm 
Approx. 25 mm 
2303M
<Adjusting the lubrication amount> 
1.  Tilt back the machine head. 
2. Turn the adjusting screw (3) to adjust the lubrication 
amount. 
・ 
If the rotary hook adjusting screw (3) is turned 
clockwise, the lubrication amount becomes greater. 
・ 
If the rotary hook adjusting screw (3) is turned 
counterclockwise, the lubrication amount becomes 
smaller. 
3. Check the lubrication amount again according to the 
procedure given in “Checking the lubrication amount” 
above. 
 
NOTE: 
Turn the adjusting screw (3) and check the lubrication 
amount repeatedly until the lubrication amount is 
correct. 
4. Check the lubrication amount again after the sewing 
machine has been used for approximately two hours.