Operation Manual

2.15
PKF 255 V8
2. Lock scribing blade with an open-end spanner.
· Turn arbor nut clockwise
= scribing blade is offset to the right.
· Turn arbor nut counter-clockwise
= scribing blade is offset to the left.
3. Swing chip case cover back and tighten screws.
Main drive belt tensioning
The main drive belt runs between the main drive
motor and the saw spindle of the main saw blade. It
requires retensioning if:
- it deflects by more than 5 mm when pressed
down with a thumb;
- the main blade takes more than 10 sec to come
to a complete standstill.
To check and retension
1. Turn saw upside down.
2. Unscrew cover plate from motor (grey arrows).
3. Check belt tension at window in transmission
housing by pressing with a thumb.
If the belt requires retensioning:
4. Loosen the four screws holding the motor by
approx. one turn.
The motor is mounted on a cam plate. The belt
tension is adjusted by turning the motor housing
as required:
· Turning motor housing clockwise
= less belt tension.
· Turning motor housing counter-clockwise
= more belt tension.
5. When the belt tension is correct tighten motor
fixing screws crosswise.
6. Screw cover plate back to motor.
3
The scribing blade drive belt requires no
maintenance.
Riving knife setting
A
The riving knife is one of the safety devices
and has to be correctly installed for a safe
operation.
In order to match the riving knife exactly with the
main saw blade, it can be adjusted in two directions:
- in the distance to the main blade;
- to the left or right for alignment.
Distance to the main saw blade
The distance between the saw blade’s outer edge
and the riving knife should be approx. 5 mm.