－13－
２．Checking and adjustment of clamp
◎ Set drill head onto pole base. While moving feeding
handle, tighten 4 pieces of hex. socket set screw on
clamp in good balance with hex. bar wrench(4mm) and
adjust the gap between pole and clamp.
As for the degree of adjustment from ① side, first
tighten hex. socket set screw till the rattling stops.
As for the degree of adjustment from ② side, first
tighten hex. socket set screw till the rattling stops.
Then loosen them back by one quarter of one
turning.(When core drill is fixed on the floor, drill head
do not slide (fall) down because of its weight.)
３．Checking and adjustment of clutch
◎ As friction plates wear out, the clutch becomes easy to slip. When this happens, readjust the
clutch using clutch adjusting tools.
1) Remove hex. plug 1/8” from gear case by hex. bar wrench (5mm).
2) Insert the tip of clutch adjusting pin into the hole, where the plug 1/8” is removed, in parallel with
the main shaft. While doing this, slowly turn the main shaft by hand and further insert clutch
adjusting pin till the main shaft is locked.
3) Holding clutch adjusting pin by your hand, hang the spanner 36mm on the main shaft. Using torque
wrench, fasten the clutch.
CAUTION
If hex. socket set screws are fastened too tight, feeding handle gets heavy. When slide
plate is worn and starts to rattle, replace it.
CAUTION
Tightening more than specified value might
cause the damage to clutch adjusting pin and
geared motor.
Model
Tightening
Torque
Tightening
Direction
SPN-202At
87N･m
Left
②
①
Hex. Bar Wrench
Clutch Adjusting Pin
Torque Wrench
Right
Spanner 36mm
Left
