Makita 6431 User Manual

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Packing
Your MAKITA Power Cut is packed in a cardboard box to pre-
vent shipping damage.
Cardboard is a basic raw material and is consequently reuseable 
or suitable for recycling (waste paper recycling).
Table of contents 
Page
Packing  ................................................................................3
Delivery inventory  ..............................................................4
Symbols ...............................................................................4
SAFETY PRECAUTIONS
  Intended use  ...................................................................5
  General precautions  .......................................................5
  Protective equipment  ...................................................5-6
  Fuels / Refuelling  ............................................................6
  Putting into operation  ......................................................6
  Cutting discs  ...................................................................7
  Kickback and lock-in  .......................................................8
  Working behavior / Method of working ............................8
  Always observe the following when using 
  synthetic resin cutting discs .............................................9
  Cutting metal  ...................................................................9
  Cutting masonry and concrete  ...................................9-10
  Transport and storage  ...................................................10
  Maintenance  ................................................................. 11
  First aid  ......................................................................... 11
  Disposal and environmental protection  ......................... 11
Technical data  ...................................................................12
Denomination of components  .........................................13
PUTTING INTO OPERATION
  Mounting the cutting disc ...............................................14
  Tightening the V-belt / Checking V-belt tension  ............15
  Installing the pressure water system  .......................15-16
  Fuels / Refuelling  .....................................................16-17
  Starting the engine  ........................................................18
  Cold-starting  .................................................................18
  Warm-starting  ...............................................................19
  Stop engine  ...................................................................19
Adjusting the carburetor  ..................................................20
MAINTENANCE
  Changing the V-belt  ......................................................21
  Cleaning the protection hood  ........................................22
  Cleaning / changing the air filter  ..............................22-23
  Replacing the spark plug  ..............................................24
  Replacing the suction head  ..........................................24
  Replacing the starter cable  ...........................................25
  Replacing the return spring  ...........................................26
  Instructions for periodic maintenance  ...........................30
Cutting attachment in central / side position  .................27
  Repositioning the cutting attachment  .......................27-28
  Replacing/cleaning the spark arrester screen  ..............28
SPECIAL ACCESSORIES
  Diamond cutting discs, trolley, water tank
  and pressure water system ............................................29
Service, spare parts and guarantee  ...........................30-31
Troubleshooting  ...............................................................31
Extract from spare parts list  .......................................32-33
  Accessories  ..................................................................33
Thank you for purchasing a MAKITA product!
Congratulations on choosing a MAKITA Power Cut cutoff saw! 
We are confident that you will be satisfied with this modern 
piece of equipment. Like our chain saws, the MAKITA Power 
Cuts  feature  specially  designed  high-performance  engines 
with  outstanding  power-to-weight  ratios,  for  heavy-duty  yet 
lightweight tools.
Other advantages of the MAKITA Power Cuts:
•  Sturdy construction and high reliability.
•  Maintenance-free electronic ignition, hermetically sealed to 
protect against dust and moisture.
•  Vibration damping with the MAKITA 2-mass system (D2M) for 
tireless working even when guiding the Power Cut by hand.
•  Five-stage air-filter system for reliable working even under 
very dusty conditions.
•  Two options for mounting the cutter attachment: Either cen-
trally, for good balance when guiding the unit manually, or on 
the side, for flush cuts along walls or curbsides or horizontally 
directly above the ground.
•  Extensive range of resin-bonded and diamond grit cutting 
discs, trolley with dust catcher, and systems for supplying 
water to the disc.
The following industrial property rights apply: 
US 08510690,  SE 95027298, SE 95027306, IT 95000653,  
IT 95000654, GBM 9412558, GBM 9412559.
We want you to be satisfied with your MAKITA product.
In order to guarantee the optimal function and performance of 
your Power Cut and to ensure your personal safety we would 
request you to perform the following:
Read this Instruction and Safety Manual carefully before 
putting  the  Power  Cut  into  operation  for  the  first  time,  
and  strictly  observe  the  safety  regulations!  Failure  to 
observe  these  precautions  can  lead  to  severe  injury  or 
death!
WARNING!
Some dust created by power sanding sawing, grind-
ing, drilling, and other construction activities contains 
chemicals known (to the State of California) to cause 
cancer, birth defects or other reproductive harm. 
Some examples of these chemicals are:
  • 
lead from lead-based paints,
  • 
crystalline silica from bricks and cement and  
 
other masonry products, and
  • 
arsenic and chromium from chemically- 
 
treated lumber.
Your risk from these exposures varies, depending on 
how often you do this type of work. 
To reduce your exposure to these chemicals: work in 
a well ventilated area, and work with approved safety 
equipment, such as those dust masks that are specially 
designed to filter out microscopic particles.
Only for DPC7330, 7331, 7340, 7341: The Emissions Compliance 
Period referred to on the emission Compliance label indicates 
the number of operating hours for which the engine has been 
shown to meet federal emissions requirements. 
Category C= 50 hours, B= 125 hours, and A= 300 hours.