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Trouble
Tachometer
Failure
Nothing is displayed on the LCD screen.
The RPM is not displayed.
The RPM indicated is unstable (normally the engine RPM varies by approximately ±100 to 300 rpm).
The RPM displayed is too high.
The RPM displayed is too low.
The display of the LCD is blank.
Please buy a new one as the battery cannot be replaced.
※Only the battery of the PET-1200 can be replaced.
Double-check the procedures for taking measurements.
※Please see the FAQ section of our home page or the product instruction manual.
Please contact the store where you purchased the product to request repairs.
Double-check the procedures for taking measurements.
※Please see the FAQ section of our home page or the product instruction manual.
Press the RESET button. For models without a reset function, please contact the store where you purchased the product to request repairs.
Either use without the antenna lead or buy just an antenna lead.
Please contact the store where you purchased the product to request repairs.
Measure at a distance of between 5 and 15 cm from the spark plug cables in a location where the indicated RPM is stable. ※Normally the engine RPM varies by approximately ±100 to 300 rpm.
Reduce the number of wraps. The normal number of wraps is between 3 & 5, but it may vary with the strength of the ignition pulse.
Please contact the store where you purchased the product to request repairs.
Double-check that the measurement position matches the ignition system of the engine. For 4-cycle, 1-cylinder engines, please see the FAQ section of our home page.
Measure at a distance of between 5 and 15 cm from the spark plug cables in a location where the indicated RPM is stable. ※Normally the engine RPM varies by approximately ±100 to 300 rpm.
Double-check that the measurement position matches the ignition system of the engine.
Please see “1. Receiving ignition pulses” in the FAQ section on the Support page of our home page.
Measure at a distance of between 5 and 15 cm from the spark plug cables in a location where the indicated RPM is stable. ※Normally the engine RPM varies by approximately ±100 to 300 rpm.
If measuring a multi-cylinder engine, make sure the antenna lead is wrapped at least one time around the spark plug cable of each cylinder and try measuring again.
Wire so the antenna lead does not touch anything metal.
Increase the number of wraps. The normal number of wraps is between 3 & 5, but it may vary with the strength of the ignition pulse.
If using contact-free, measure at a distance of between 5 and 15 cm from the spark plug cables in a location where the indicated RPM is stable. ※Normally the engine RPM varies by approximately ±100 to 300 rpm.
If using by wrapping the antenna lead, reduce the number of wraps. The normal number of wraps is between 3 & 5, but it may vary with the strength of the ignition pulse.
Please contact the store where you purchased the product to request repairs.
Hourmeter
Failure
Nothing is displayed on the LCD screen.
The measured hours is reset
The time is not measured
The display of the LCD is blank.
Please buy a new one as the battery cannot be replaced.
Double-check the procedures for taking measurements. ※Please see the FAQ section of our home page or the product instruction manual.
Please contact the store where you purchased the product to request repairs.
If using contact-free, with the hour meter and the spark plug cables at a distance of 5 to 15 cm, slowly raise the RPM from idle to max RPM and check that the colon (:) on the LCD display flashes in all ranges.
If using by wrapping the antenna lead, reduce the number of wraps. The normal number of wraps is between 3 & 5, but it may vary with the strength of the ignition pulse. Slowly raise the RPM from idle to max RPM and check that the colon (:) on the LCD display flashes in all ranges.
Please contact the store where you purchased the product to request repairs.
Let it run for at least 1 minute. During measurement, the colon (:) of the LCD display flashes, so make sure it is doing so.
Reset it (initialize). For models without a reset function, please contact the store where you purchased the product to request repairs. (Only the PET-3200R can be reset.)
Please buy just an antenna lead.
With the hour meter and the spark plug cables at a distance of 5 to 15 cm, slowly raise the RPM from idle to max RPM and check that the colon (:) on the LCD display flashes in all ranges.
Wire so the antenna lead does not touch anything metal.
Increase the number of wraps. The normal number of wraps is between 3 & 5, but it may vary with the strength of the ignition pulse. Slowly raise the RPM from idle to max RPM and check that the colon (:) on the LCD display flashes in all ranges.
Reduce the number of wraps. The normal number of wraps is between 3 & 5, but it may vary with the strength of the ignition pulse. Slowly raise the RPM from idle to max RPM and check that the colon (:) on the LCD display flashes in all ranges.
Please contact the store where you purchased the product to request repairs.
If using contact-free, with the hour meter and the spark plug cables at a distance of 5 to 15 cm, slowly raise the RPM from idle to max RPM and check that the colon (:) on the LCD display flashes in all ranges.
If using by wrapping the antenna lead, reduce the number of wraps. The normal number of wraps is between 3 & 5, but it may vary with the strength of the ignition pulse. Slowly raise the RPM from idle to max RPM and check that the colon (:) on the LCD display flashes in all ranges.
Please contact the store where you purchased the product to request repairs.
Ignitionindicator
Failure
The LED does not light
Have the engine repaired.
Use at a distance of up to 15 cm from the spark plug cables
Please buy a new one as the battery cannot be replaced.
Set the stop switch position of the engine to ON (START).
Please contact the store where you purchased the product to request repairs.
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