General Technologies TA500 SmarTach+COP : Multisystem Engine Analyser - Manual (Page 8)

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4.4 Common causes of short burn time readings
• Spark plug worn or gap too wide.
• Spark plug connector damaged, loose or disconnected.
• Excessive resistance in the ignition coil primary circuit.
• Lean mixture.
4.5 Common causes of low spark KVolt readings
• Shorted, dirty or too small spark plug gap.
• Dirty or damaged spark plug insulator boot allowing spark “tracking” across
insulator.
• Broken core in spark plug wire. Break is located between the distributor (or DIS coil)
and the test point.
• Short circuit, disconnection or partial disconnection between the distributor (or DIS
coil) and spark plug wire.
• Rich mixture. Most likely due to leaking fuel injector, or faulty oxygen sensor.
• Low cylinder compression pressure. Could be caused by leaking valves, worn piston
rings, blown cylinder head gasket, etc.
4.6 Common causes of high spark KVolt readings
• Spark plug worn or gap too wide.
• Spark plug connector damaged, loose or disconnected.
• Broken core in spark plug wire. Break is located between the spark plug and the
test point.
• Lean mixture.
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Fig 9 - Battery replacement
5. MAINTENANCE
2.1 Battery replacement
To replace the internal battery:
1- Release the rubber holster from plastic enclosure by pulling from the bottom of the
holster as shown in the illustration (Fig. 9)
2- Push the rubber holster forward until the battery compartment cover is exposed
3- Slide open battery cover located at the back of the unit.
4- Connect the new battery observing the polarity of the battery connectors.
5- Replace battery cover and rubber holster.
4- Press the ‘Power On/Off / Reset’ button on the TA500 until the display turns on. If
the display does not turn on, check the battery polarity and reinstall if necessary. To
turn the unit off, press and hold the ‘Power On/Off / Reset’ button again until the
display turn off.
5.2 Cleaning
Keep the instrument in its carrying case when not in use and do not subject it to dampness
or severe heat or cold. Do not use the instrument in the rain, if it should accidentally get
wet, dry it off with a clean paper towel before storing it away.
Protect the unit from contact with any solvents. Never clean with a solvent or petroleum
based medium such as gasoline, as these chemicals may attack the plastic parts and
cause permanent damage. Never use an abrasive cleaner. Cleaning should be limited to
wiping with a clean damp paper towel and a small amount of soap if required. Dry the unit
thoroughly after any cleaning.
The unit is a sealed instrument and contains no user serviceable parts other than the
battery, which can be replaced by opening the drawer on the back of the unit. Opening
other parts of the unit will void the warranty.
6. WARRANTY
With the exception of the battery, this instrument is warranted against defects of material or
workmanship which develop within a period of one (1) year following the date of purchase
by the original owner. For details see our Standard Warranty Information on our web page
at www.gtc.ca or you may request a printed copy.