MasterCraft 054-3121-6 Instruction Manual Download Page 6

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20V max* LIThIUM-ION COMpACT CORdLeSS IMpACT WReNCh - 054-3121-6

20V max* LIThIUM-ION COMpACT CORdLeSS IMpACT WReNCh - 054-3121-6

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Know your cordless impact wrench

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No. 

Description 

No. 

Description

1  

1/2" Square Anvil 

direction-of-rotation selector

Trigger switch 

Bit clip

Led worklight 

Forward/reverse Led indicator

Before attempting to use this tool, become familiar with all of its operating features and safety requirements. 
For optimum performance and safety, read the following operating instructions carefully before using.

WARNING!

do not allow familiarity with the Cordless Impact Wrench to cause a lack of alertness. A 
fraction of a second of carelessness is enough to cause severe injury.

WARNING!

Carefully read the Instruction Manuals for your Mastercraft 20V max Lithium-Ion Battery and 
Mastercraft 20V max Lithium-Ion Charger for safety and operation instructions.

to attach battery pack

 (fig 1)

CAUTION!

Avoid the possibility of accidental 
starting. Always take care not to 
activate the trigger switch when you are 
attaching the battery pack or  
performing other adjustments to the tool.

NOTE: 

When placing a battery pack on the tool, be 

sure that the raised rib on the battery pack aligns 
with the groove on the cordless impact wrench and the latches snap into place properly. Improper assembly 
of the battery pack can cause damage to internal components.

1. Lock the trigger switch on the cordless impact wrench by placing the direction-of-rotation selector 

(forward/centre-lock/reverse) in the centre position.

2. Align the raised portion on the battery pack with the groove on the bottom of the cordless impact wrench,     

and then attach the battery pack to the cordless impact wrench as shown.

3. Make sure that the latch on the battery pack snaps into place and that the battery pack is secured to the 

cordless impact wrench before beginning operation.

to detach battery pack

 (fig 1)

CAUTION!

Avoid the possibility of accidental starting. Always take care not to activate the trigger switch 
when you are detaching the battery pack or performing other adjustments to the tool.

1. Lock the trigger switch on the cordless impact wrench by placing the direction-of-rotation selector 

(forward/centre-lock/reverse) in the centre position.

2. depress the battery-release button located on the front of the battery pack to release the battery pack.

3. pull forward on the battery pack to remove it from the cordless impact wrench.

fig 1    

Battery-release button

Summary of Contents for 054-3121-6

Page 1: ...INSTRUCTION MANUAL 20V max Lithium Ion COMPACT CORDLESS IMPACT WRENCH 054 3121 6 ...

Page 2: ... 16 PARTS LIST 17 18 WARRANTY 19 20 If any parts are missing or damaged or if you have any questions please call our toll free helpline at 1 800 689 9928 Read and understand this instruction manual thoroughly before using the product It contains important information for your safety as well as operating and maintenance advice Keep this instruction manual for future use Should this product be passe...

Page 3: ...danger Failure to obey a safety warning can result in serious injury to yourself or others To reduce the risk of injury fire or electric shock always follow the safety precautions Know your tool To operate this tool carefully read this Instruction Manual and all labels affixed to the Cordless Impact Wrench before using it Keep this instruction manual available for future reference Important This t...

Page 4: ...eft attached to a rotating part of the power tool may result in personal injury Do not overreach Keep proper footing and balance at all times This enables better control of the power tool in unexpected situations Dress properly Do not wear loose clothing or jewellery Keep your hair clothing and gloves away from moving parts Loose clothes jewellery or long hair can be caught in moving parts If devi...

Page 5: ...on before inserting the battery pack Carrying appliances with your finger on the switch or inserting the battery pack into an appliance with the switch on invites accidents Remove the battery pack before changing accessories Accidental starting may occur because battery appliances with a battery inserted are in the operative condition Be prepared for a reaction torque when seating or removing a fa...

Page 6: ...NOTE When placing a battery pack on the tool be sure that the raised rib on the battery pack aligns with the groove on the cordless impact wrench and the latches snap into place properly Improper assembly of the battery pack can cause damage to internal components 1 Lock the trigger switch on the cordless impact wrench by placing the direction of rotation selector forward centre lock reverse in th...

Page 7: ...klight fig 4 The LED worklight located on the base of the cordless impact wrench will illuminate when the trigger switch is depressed This provides additional light on the surface of the workpiece for operation in lower light situations The LED worklight will turn off when the trigger switch is released Electric brake To stop the tool release the trigger switch and allow the anvil to come to a com...

Page 8: ...htening action is required when joining metal to metal where a spring ring washer disc spring washer stud bolt or bolt nut with conical seats are used A longer interval of impacting tightening action is necessary to arrive at the maximum tightening torque when joining metal to wood or insulation material Loosening fasteners 1 With the proper impact socket securely mounted to the cordless impact wr...

Page 9: ...ding of moving parts or any other condition that may affect the operation If abnormal vibration or noise occurs turn the cordless impact wrench off immediately and have the problem corrected before further use WARNING When servicing use only identical replacement parts The use of any other parts may create a hazard or cause damage to the product WARNING Use only accessories that are recommended fo...

Page 10: ...00 Washer 28 3680140000 Magnet Ring 9 3660528000 Compression Spring 29 4860007000 Inner Wire 10 5690274000 Rubber Ring 30 4860003000 Inner Wire 11 5650163000 Spring Washer 31 4360225000 LED 12 5670319000 Torque Pin 32 3402385000 Contact Receptacle Assembly 13 3520657000 Planet Gear 33 3321620000 Left Housing Assembly 14 3551808000 Spindle 34 3703673000 Bits Holder 15 3520656000 Ring Gear 35 312650...

Page 11: ...cted to become inoperative or unusable after a reasonable period of use d this warranty will not apply to routine maintenance and consumable items such as but not limited to fuel lubricants vacuum bags blades belts sandpaper bits fluids tune ups or adjustments e this warranty will not apply where damage is caused by repairs made or attempted by others i e persons not authorized by the manufacturer...

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