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Standard Tiny-Tach™
Commercial Tiny-Tach
Diesel Tiny-Tach
Tech Tach 20 K™ Wireless
Frequently Asked Questions

Frequently Asked Questions

  1. What is the update time? 2.5 seconds for the original gas Tiny-Tach™ and 1/2 second for commercial Tiny-Tach.™
  2. How do you hook it up? You have two wires at the engine. The red wire (antenna wire) wraps 3-4 times around the plug wire. The white wire has a lug to put under a bolt head for ground.
  3. How is the Tach powered? A 3 volt lithium battery is used for the original gas Tiny-Tach™ and the commercial unit. The commercial unit requires additional outside power such as a 9-volt battery hook up.
  4. How long does the battery last? The lithium battery life is estimated at 5+ years. With external power applied to the commercial unit, the internal battery recharges as power goes to the unit extending the battery life. Both tachs are warranted against defects (but not wire damage) for a period of one year from date of purchase.
  5. How many models are there? There are 3 different modes of the original Tiny-Tach™ relating to how the engine cylinder fires:
    • 2C for 1x per revolution (typically for Briggs, Honda and Kohler type engines);
    • 1C for cylinders firing 2x per revolution (2 cylinder personal watercraft such as Seadoos typically fire this way); and
    • 4C for cylinders firing every other revolution (typically K series Kohler engines)
    • The commercial unit, CTT-APR, can be programmed for different firing sequences.
  6. Will the Tiny Tach work on multi-cylinder engines? Yes. Some multiple cylinder engines require a filter to cut out electric noise. The filtered "X" models are made to order for you. Call DTI for information if you have a multi-cylinder engine.
  7. Do you make a model for resetting the hours? Yes, it is called an R, instead of an NR.
  8. Why does my 2C Tach read double on my two cylinder engine? It can be one of two reasons, It can be picking up the other cylinder signal or your engine fires each plug 2 times/rev. Note: Some single cylinder engines do this also, i.e. ATV's.
  9. Can you lengthen the wire (all models)? No. You must send your Tach to DTI and they can lengthen the coaxial wire there.
  10. Why does my 1-c Tach read 1/2 time on a 2 cylinder engine? You need to attach the wires to BOTH cylinders. Make sure you use only 3 wraps with the wire.




 

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