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AX850 PACE CLOCK

Operating Instructions

Installing the Battery 

1. Remove the battery door in back by pushing tab  

  down and pulling toward you. The adjustment knob  

  (with stem) will be attached to the door when opened.
2.  First, insert LR6 (AA) battery with + (Positive) end into  

  left end, then be sure copper switch plate (end tip of  

  wire) is between – (Negative) end of battery and  

  – (Negative) side of battery holder and press battery  

  into position.
3. Reinstall door being careful to reinsert the adjustment  

  knob stem into motor slot. (The stem can be separated  

  from knob head, inserted into motor slot, replace door  

  with stem protruding thru door hole and attach knob  

  head to stem).

Operating the Clock

To start or stop the clock, press the red button on top right of the unit. 

Setting & Resetting the Clock

To set clock, turn the adjustment knob in the back door until the clock 

face shows desired time. The adjustment knob controls the black min-

ute hand only. The red second hand is controlled by the Start/Stop but-

ton. Use the Start/Stop button to move it into desired starting position.  

Normally, users set the clock back to zero before use. Alternatively,  

you can set the clock to a specific time  

to provide a timing interval. 

(For example, to time a 20 minute  

interval, set the minute hand  

at 40 and start the clock.  

When the clock (minute  

hand) reaches 60, your  

20 minute interval is up.)

 

 

Start/stop button

Minute hand

Second

hand

Direction of

 counting

Motor slot

+ –

800-935-1996  •  925-290-1900  •  FAX 925-290-1930 

www.ACCUSPLIT.com  •  [email protected]

Adjustment knob

for setting/resetting 

To open 

battery door 

push down here

Copper  

switch  

plate

AA cell

The AX850 is a large-format pace clock suitable for in-

door and outdoor use. It is a “count up” timer with one 

second resolution to 60 minutes. The clock continues 

to count after passing 60 minutes each time.

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