Design Technology Tiny-Tach 2A User manual

METER OPERATION
When the engine is started, the display will indicate the
RPM of the engine. When the engine is shut down, the
display will show hours and minutes.
2A OPERATING INSTRUCTIONS
Use on most engines from single cylinder
lawn mowers up to V8 engines.
45° = 8 sparks per revolution
60° = 6 sparks per revolution
90° = 4 sparks per revolution
120° = 3 sparks per revolution
180° = 2 sparks per revolution
360° = 1 spark per revolution
720°= 1 spark per 2 revolution
To Decrease RPM Reading
s
Model 2A Initial Setup:
• Push “SELECT” button several times until display
shows 360° “DO NOT RELEASE BUTTON” until
“SET” appears in the upper right corner of display.
Once “SET” appears release and press “SELECT”
button to toggle through all degree settings.
• Stop at correct degree setting for your engine
(i.e. 360°, 120°, 90° etc.) see gure1
• Wait for 30 seconds and the display will return to
“TOT” Total Hours.
• TINY-TACHTM is now ready to use.
Figure1
TIP: Most single cylinder air cooled engines idle
around 1400 RPM, if the RPM displayed is too low
set the value to “720”, If the RPM is too high set the
value to a lower Degree number “180”or lower.
JOB = Hours of operation since the timer was reset.
To view “JOB” time push the “SELECT” button once.
To reset “JOB” time: Push and Hold “SELECT” button
until display shows “RESET” and show hours that have
accumulated on the current job.
When you RELEASE the “SELECT” button the “JOB”
display will reset to “00:00”. You will begin to record the
next job interval.
12 : 34
:
JOB RESET
JOB TIMER
A RESET FUNCTION used for interval tracking.
TOT = Total Hours of operation.
-This is always displayed when the engine is off.
- TOT time CANNOT be reset.
Typical RPM display when engine is running.
TOTAL TIME
All functions of the
TINY-TACHTM are accessible by
pushing the “SELECT” button.
RPM
INITIAL SETUP (skip if RPM reading is correct)
The default setting 360° should work for most engines.
• 0 to 19,999 RPM Display
• 1/2 Second RPM Update
• Resettable Job Timer
• Total Hours (Non resettable)
(123 Hours 45 Minutes)
Defalut setting
Tachometer and Hour meter
Tachometer and Hour meter
ADJUSTABLE
User Adjustable spark setting from 1 spark
to 8 sparks per revolution.
2A
Model
2A
Design Technology, Inc.
768 Burr Oak Drive, Westmont, IL 60559
[phone]
www.tinytach.com
Made
In
America
JOB RESET

The TINY-TACHTM meter can
be mounted in the desired
location using either sheet
metal screws or by using
double sided tape. For best
results when using tape, be
sure to clean off any dirt,
grease and oil from the
desired mounting location
using a suitable solvent such
as denatured alcohol.
Find a suitable route to run
the pick-up wire to the spark
plug wire. It is not critical
how the wire is routed. It can
be put into existing wire har-
nesses or wrapped around
and taped to metal supports.
WARRANTY: Design Technology, Inc. warrants that for a period of one year from time of purchase it will repair or replace the TINY-TACHTM,
without charge, if it fails to function properly due to a defect in workmanship or materials in the instrument. Damage caused to the wires
and cables by improper care or use is expressly excluded from this warranty. Used TINY-TACHTM purchased through a 3rd party
reseller will be warranted at the discretion of Design Technology, Inc.
The TINY-TACHTM should be returned, prepaid to: Design Technology, Inc., 768 Burr Oak Drive, Westmont, IL 60559. In order to assure
that you receive the correct model for your application, we request that you please enclose a short note describing the problem, the type
of engine and number of cylinders. Thank you. We hope you enjoy using your new TINY-TACHTM
Connecting the Wires
www.tinytach.com 11262-2A
Design Technology, Inc.
768 Burr Oak Drive, Westmont, IL 60559
[phone]
KEEP WIRE CLEAR OF
EXTREMELY HOT ENGINE
PARTS SUCH AS THE
MUFFLER, AND MOVING
PARTS.
CAUTION
Do not CUT
the BLACK wire
WRAP RED WIRE ABOUT 1* TURN AROUND
SPARK PLUG WIRE. Tip: Cut Off Excess Red
Wire Only After Unit Is Reading Correctly.
Flush Panel Mount Surface Mount
Can be Recessed into Panel
COIL UP ANY EXTRA
WIRE (DO NOT CUT WIRE)
AND SECURE AWAY
FROM EXTREME HEAT
AND MOVING PARTS
ATTACH WHITE WIRE TO
ENGINE GROUND. LOOSEN
CONVENIENT BOLT ON
ENGINE OR FRAME THEN SLIP
SOLDER LUG UNDER BOLT
AND RETIGHTEN
2.045
1.540
2.500
IMPORTANT
Wire damage (cuts or burns) will cause the wire to short and your TINY-TACHTM will stop working. Wire damage is not
covered under warranty.
The RED WIRE should be slipped over an insulated section of the spark plug wire using about 1* turns. PLEASE BE
CERTAIN YOU DO NOT WRAP THE RED WIRE TOO CLOSE TO THE SPARK PLUG THAT ENGINE VIBRATION WILL
ALLOW IT TO COME INTO DIRECT CONTACT WITH THE METAL PORTION OF THE SPARK PLUG. Most engines
have a spark plug cap and will prevent this from happening. After the connections are made, any excess wire can be coiled
up and taped to a convenient area.
* If the signal is not strong enough, you can add one wrap at a time until your signal is clear. The signal strength is controlled
by the number of wraps (too many wraps will pick up electronic noise and give a faulty reading).
Technical Support
630-920-1300
Tachometer and Hour meter