Brother Z-8550A Manuale Proprietario

 

 

Z-8550A, 8560A 

78

 

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.If they are touched, injury 
may result. 

Use the following procedure to check the amount of oil being supplied to the rotary hook after replacing the rotary hook or 
when changing the sewing speed. 
 

1. Remove the thread from all points from the thread 

take-up lever 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) to the left of 

the rotary hook (2) and hold it there. Then run the sewing 
machine at the normal sewing speed for 10 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. 

 
*  Be sure to repeat this operation three to four times to 

check average lubrication amounts. 

* If adjustment is necessary, carry out the following 

operations in 

<

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. 

*  Turn the rotary hook adjusting screw (3) and check the 

lubrication amount repeatedly until the lubrication 
amount is correct. 

 
 
 
 

3529M

3530M

0611M

Approx. 25 mm

Approx. 50mm 

Becomes 
less 

Becomes

more

3531M

Spattered oil 

Too much oil 

Correct amount 

Too little oil