MAN# 650190
MCL-4000 SERIES 1-7/8” LED TACHOMETER
MCL-4027S/R
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10 rpm resolution. (100 rpm res. above 10,000)
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Adjustable warning point from 2200 – 14,600 RPM
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Hi RPM recall
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Fast or slow display update rates
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Optional display dimming feature
MOUNTING
The MCL-4000 series gauge requires a round hole 1-7/8” diameter. It should be inserted into the opening from the front and
the U-clamp will be installed from the back. Tighten the two nuts on the U-clamp so that the gauge is secure. Gauge depth to the
back of the case is approximately 1-3/8”. Gauge depth including the mounting studs is about 2-1/8”.
TACHOMETER SETUP
The MCL-4000 series tachometer has three setup menus; cylinder setting, update speed, and warning point. Setup is done
using the green wire. There is a momentary push button switch supplied that can be mounted anywhere so setup and the hi rpm recall
function can be easily accessed. Connect the green wire to one side of the push button switch and the other side to +12V. Default
settings are 2 cylinder, slow update, 5000 RPM warning point.
TO ENTER SETUP:
1. start with the key off.
2. Press and hold the switch and turn the key on, the gauge should light and show “Lr1” as long as the switch is held. This
is the software code and may be used to identify the product.
3. Release the switch and the gauge will automatically scroll through the setup menus “CYL” “SPd” “ HI” “DnE”
a. “CYL” is the engine cylinder setting, selectable from 1 – 15 cylinders
b. “SPd” is the update rate of the display. Slow “SLo” is about 1/2 second and Fast “FSt” is 1/8 second.
c.
“ HI” is the warning point at which the gauge will flash to indicate redline, settable from 2200-14,600 RPM.
d. “DnE” end of setup menus
4. When the desired menu is displayed press and release the switch
5. The current value for the setting should be displayed
6. To change the settings press and release the switch
7. Once the desired value is displayed press and hold the switch to save the changes
8. the display will jump to “DnE” indicating the new setting has been saved
9. Press and release the switch when “DnE” is displayed to exit and return to normal operations, or ….
10. The gauge will remain in setup and keep looping thought the menus until the power is cycled off then on.
