Issues - Markusson RJ12 Owner's Manual

Troubleshooting

7 .3 Issues

Issues
The grinding head "falls" without
slowing down before it touches the
cutter .
The lengths of the right and left cutters
are not the same .
The chain is not fixed during
sharpening .
The wrong cutter is sharpened .
Wrong parts of the cutters are
sharpened .
The cutters are not correctly
sharpened .
The top-plate angle is too aggressive .
The metal of a cutter turns blue during
grinding, which is an indication of
damaged or weakened metal .
The depth of the gullets on the
left and right cutters are unevenly
sharpened.
31 RJ12_v1_EN_220223
Possible cause
The wire is worn and needs to be
adjusted .
The equal cutting teeth knob is
incorrectly set .
The chain vise is loose .
The chain was in the incorrect
position when the machine was
started .
The pitch adjustment wing is not in
the correct position for the type of
chain used .
A cutter was caught on the chain
pusher, because the chain pusher
is worn out and the material is
uneven .
Incorrect settings are used .
The top-plate angle setting is
incorrect .
The metal is overheated .Too much
material is removed (one speed) .
The grinding wheel is not
centered between the cutters .
Corrective procedure
See section 6 .5, "Check and adjust the
wire" .
See section 5 .2 .7, "Set the cutter top plate
to equal lengths" .
See section 6 .4, "Fasten the chain lock" .
Find the cutter to be sharpened and make
sure that it is in the correct position before
the machine is operated . See section
5 .2 .5, "Set the chain pusher" .
See section 5 .2 .5, "Set the chain
• Loosen the screw that holds the chain
pusher in its position .
• Discard the chain pusher in accordance
with local, state, and national laws and
regulations .
• Attach a new chain pusher and fasten
the screw .
File the chain pusher until the material
is even .
See section 5 .2 .5, "Set the chain
See section 5 .2 .3, "Set the top-plate
angle" .
Replace the damaged cutter or discard
the chain . Remove less material at a time,
adjust this with the adjustment knob . If
necerrary, grind more turns .
See the instructions in
section 5 .2 .8, "Center the grinding disc" .
RJ12
pusher" .
pusher" .