BM 1619929L34
Operating Instructions
PADDLE "ON/OFF" SWITCH
The paddle switch enables the operator to control the switch functions of "ON /OFF".
TO SWITCH THE TOOL "ON": Squeeze and hold the paddle lever. TO SWITCH THE
TOOL "OFF ": Release pressure on the paddle lever. The switch is spring loaded and will return automatically.
"TOOL TIPS"
The tool may be switched on with either hand. Balance the tool with both hands and rest the tool on the hip.
For the best penetration rates in concrete, run the tool with a steady pressure, but do not use excessive force as this will decrease the efficiency of the tool. Start chipping with the tool in a straight in position until the surface to be broken is chipped. Draw the hammer back at an angle of 60˚ with the surface to be broken. Apply only enough force to keep the tool weight on the accessory
All grease packed hammers require a short period of time to warm up. Depending on the room temperature, this time may vary from approximately 15 seconds (90˚F) to 2 minutes
(32˚F). A new hammer requires a
Avoid no load running of the tool. No load or "empty blows" is the most damaging factor to any impact hammer.
An electric hammer is likely to be the most expensive portable tool at the construction job. The long wear and efficient operation of the BOSCH hammers will more than justify the cost for tools of this type. As earlier pointed out, sharp accessories as well as clean air vents are necessary for efficient operation. Establish and follow a set maintenance program.
Maintenance
Service
Preventive maintenance
!WARNING performed by unauthorized personnel may result in misplacing of internal wires and components which could cause serious hazard. We recommend that all tool service be performed by a Bosch Factory Service Center or Authorized Bosch Service Station.
TOOL LUBRICATION
Your Bosch tool has been properly lubricated and is ready to use. It is recommended that tools with gears be regreased with a special gear lubricant at every brush change.
CARBON BRUSHES
The brushes and commutator in your tool have been engineered for many hours of dependable service.
Your tool is equipped with a
Only genuine Bosch replacement brushes specially designed for your tool should be used.
BEARINGS
Every second brush change, the bearings should be replaced at Bosch Factory Service Center or Authorized Bosch Service Station. Bearings which become noisy (due to heavy load or very abrasive material cutting) should be replaced at once to avoid overheating or motor failure.
