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10. Maintenace
10.1 Cleaning and checking
Attention! Danger of injury!
Maintenance may be carried out only when the machine is switched off
and the motor stopped!
Attention!
Maintenance must be carried out in prescribed intervals. Neglection of
maintenance may result in malfunction requiring costly repair.
Mainenance operation
Maintenance interval
Throat plate (1) disassembly. Cleaning of throat plate, hook(2),
feed dog (3) and their surroundings.It is possible to clean with compressed air
.
Re-lubrication of hook path with oil and washing of dirt out of the path. 1 week
Spraying the unnecessary oil out of the hook at the machine high speed operation.
Check of oil reserve in oil tanks (see section 10.2).
Cleaning of mechanisms in the base plate. Cleaning (vacuuming, wiping out)
1 month
oil tray. Cleaning of ventilator grid on the motor.
Check of bobbin case (4) fitting clearance in the hook housing (5).
Check of drive V-belt tension (checking method is described
in the second part of this Instruction for Use). Lubrication of swinging shafts
with grease (see section 10.2).
1 year
3
1
5
2
4
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