Makita HM1140C Instruction Manual page 8

Speed change
The blows per minute can be adjusted between 1,300 and 2,650 BPM just by turning the
adjusting dial. This can be done even while the tool is running. The dial is marked 1 (lowest
speed) to 5 (full speed). Refer to the table below for the relationship between the number
settings on the adjusting dial and the blows per minute.
Number
on adjusting dial
5
Blows
per minute
2.650
4
3
2
2,350
1,950
1.550
Chipping/Scaling/Demolition
Hold the tool firmly with both hands. Turn
the tool on and apply slight pressure on the
tool
so that the tool will not bounce around,
uncontrolled. Pressing very hard on the tool
will not increase the efficiency.
1
Adjusting dial
1,300
8