Speed change
1 
010465
1. Adjusting dial
The green
The red service indicator lamp flickers up when the carbon brushes are nearly worn out to indicate that the tool needs servicing. After approx. 8 hours of use, the motor will automatically be shut off.
The blows per minute can be adjusted 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 | Blows per minute |
5 | 2,650 |
4 | 2,400 |
3 | 1,750 |
2 | 1,300 |
1 | 1,100 |
010466
CAUTION:
•The speed adjusting dial can be turned only as far as 5 and back to 1. Do not force it past 5 or 1, or the speed adjusting function may no longer work.
For Model HM0871C only
NOTE:
• | Blows at no load per minute becomes smaller than |
ASSEMBLY
CAUTION:
•Always be sure that the tool is switched off and unplugged before carrying out any work on the tool.
Side handle (auxiliary handle)
1. Side grip (auxiliary handle)
1
010494
The side grip swings around to either side, allowing easy handling of the tool in any position. Loosen the side grip by turning it counterclockwise, swing it to the desired position and then tighten it by turning clockwise.
Installing or removing the bit
those on load in order to reduce vibration under no |
load, but this does not show trouble. Once |
operation starts with a bit against concrete, blows |
per minute increase and get to the numbers as |
shown in the table. When temperature is low and |
there is less fluidity in grease, the tool may not |
have this function even with the motor rotating. |
1
2
1.Bit shank
2.Bit grease
Indicator lamp
1
1.
2.Service indicator lamp (red)
009664
Clean the bit shank and apply bit grease before installing the bit.
Insert the bit into the tool. Turn the bit and push it in until it engages.
2
010456
5