RJ12
27 RJ12_v1_EN_220223
Maintenance and Service
6 .3 Change the grinding wheel and
fit the grinding wheel guard
WARNING Before a chain is sharpened, make
sure that the grinding wheel is not cracked, does not
vibrate or wobble . There is a simple test (called the
“ring test”) that you can do to check for damage (see
section 4 .5, “Install and center the grinding wheel”) .
IF THE GRINDING WHEEL IS DAMAGED IT
MUST BE REPLACED IMMEDIATELY . If abnormal
vibrations occur during operation, stop the machine
immediately and check the condition of the grinding
wheel .
The machine comes with 3 grinding wheels of
different sizes . To order more grinding wheels, see
section 8, “Accessories and Spare Parts” .
1 . Press the stop button to turn the power off .
2 . Lift the grinding head to its most upright
position .
3 . If the grinding wheel guard is already attached:
Loosen the 2 attachments knobs (D) and
remove the guard (C) .
4 . Hold the grinding wheel and loosen the nut
(B) .
C
D
B
A
5 . Remove the grinding wheel (A) from
the grinding wheel axis and discard it in
accordance with local, state and national laws
and regulations .
6 . Place a new grinding wheel (A) on the grinding
wheel axis .
7 . Tighten the nut (B) by hand to secure the
grinding wheel in its position . Do not over-
tighten the nut .
8 . Place the grinding wheel guard (C) in its
position and fasten the 2 screws (D) .
9 . Center the grinding wheel following the
instructions in section 5 .2 .8, “Center the
6 .4 Fasten the chain lock
The chain lock needs to be fastened if the chain is
not fixed during sharpening .
1 . Turn the nut (A) in 1–1 .5 turns clockwise, until
the groove in the chain vise is 0,3–0,4 mm wide
in locked position .
Note: This instruction is for .325 chain pitch . For
other chain pitches, adjust to lower numbers .
A
