Set The Cutter Top Plate To Equal Lengths; Center The Grinding Disc; Set The Grinding Length - Markusson RJ12 Owner's Manual

Operation
2 . The grinding depth for gullets is recommended
by the chain manufacturer . To set it, turn the
grinding depth knob, located on the back of the
grinding head:
• clockwise, to grind shallower into the gullet, or
• counter-clockwise, to grind deeper into the
gullet .

5 .2 .7 Set the cutter top plate to equal lengths

If the right (outer) and left (inner) cutters are not
sharpened to equal lengths, follow these steps:
1 . Do a sharpening test on a test chain, according
to the instructions in section 7 .2, "Sharpening
test" .
2 . Make sure that the right and left cutting
teeth are sharpened to equal lengths . Use
the template provided with the machine to
measure . If they are not equally long, turn the
equal cutting teeth knob:
• clockwise to decrease the length of the left
cutter and increase the length of the right
cutter, or
• counter-clockwise to increase the length of the
left cutter and decrease the length of the right
cutter .
3 . Repeat the sharpening test until the cutter top
plates are sharpened to equal lengths .
21 RJ12_v1_EN_220223

5 .2 .8 Center the grinding disc

The diameter of the grinding wheel decreases when
it is used . To maintain the grinding proportions, the
grinding wheel position must be changed when the
grinding wheel has been worn .
1 . Use the grinding wheel centering knob to center
the grinding wheel over the chain . The gullets
should have equal depth on the left and right
cutting links .
2 . Sharpen a few links and then visually inspect
the result . If the grinding depth is not equal
on the gullets of the right and left cutting links,
continue to the next step .
3 . Turn the grinding wheel centering knob to move
the grinding motor and the wheel up or down .
4 . Set the arrow on the scale to point to the
number that corresponds to the wheel diameter,
as displayed below . These scale numbers are
approximate and are only for general guidance .
Observe if the grinding depth of right and left
gullets are equal for final adjustment .
Grinding wheel diameter:
150 mm (5 .9")
(new grinding wheels)
140 mm (5 .5")
130 mm (5 .1")
5 . Repeat steps 1-2 until the grinding depth is
equal .

5 .2 .9 Set the grinding length

1 . To set the approximate grinding length, turn the
chain pusher adjustment knob:
RJ12
Scale:
1-3
3-5
4-6