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Engine Instrument Tachometer All Legacy Universal Diesel, Digital Hour Meter

<span style= >Engine Instrument Tachometer All Legacy Universal Diesel, Digital Hour Meter</span>

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Engine Instrument Tachometer All Legacy Universal Diesel, Digital Hour Meter

Part #: Z5530

$161.54

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Features:
• For all legacy Universal Diesel engines (prior to "B Series") with OEM alternator
• 0-4000 rpm range
• Includes digital engine hour meter
• Uses alternator sensor
• Automotive type "light piping" eliminates the "halo" effect around the edge of the dial that reduces readability
• Scratch resistant domed glass lens

Used on the following boat/engine combinations:
• All Universal Diesel engines (prior to the "B Series" engines) with original equipment alternator
• M-12 (Catalina 25, Capri 26)
• M-2-12 (Catalina 25)
• 5411 (later designated M-15 used in the Catalina 27 and Catalina 30)
• M-18 (Catalina 27, Catalina 30)
• M-25 (Catalina 30, Catalina 34, Catalina 36)
• M-25XP (Catalina 28, Catalina 30, Catalina 34, Catalina 36)
• M-320 (Catalina 27, Catalina 28, Catalina 30)
• 5424 (later designated M-30 used in the S&S Catalina 38)
• M-35 (Catalina 34, Catalina 350, Catalina 36, Catalina 38)

For "B" series Universal Diesel engines, Yanmar, or Perkins engines, see "May we also suggest" below.

There are other applications where this tachometer was used as well. It will also work with most higher output after market alternators. Your alternator must be equipped with a AC pick-up "tap" on the back of the alternator. You must adjust the tachometer by first determining the pulley ratio and number of poles in your alternator. To assist in your decision and to calibrate to your alternator, refer to the table on the page labeled 337 provided below under "Technical Support". You are responsible for determining if the tachometer is suitable for your alternator before ordering. All sales are final for tachometers used on after market alternators.

• Nominal size: 3" diameter
• Bezel diameter: 3-3/4"
• Cutout: 3.4"

1) Our tachometers are set to position "B" and adjusted to be approximately correct (within about 50 RPM) when installed on the above engines with standard factory installed alternator and pulleys.

2) A fine calibration potentiometer is under the sticker at the back (see "More Images" below). It is a delicate electronic device mounted to the far side of the circuit board with three soldered on contacts. The adjustment is accessible through a small hole in the board with three soldered on contacts. The adjustment is accessible through a small hole in the board. A watch maker can successfully adjust it without damaging it or pushing it off of the circuit board. Our experience indicates that mechanics are too ham-fisted and will break it every time. If approximately correct isn't accurate enough for your needs, you can attempt to adjust it using a jeweler's flat blade screwdriver (not phillips head). But once you remove the sticker over the calibration screw, the warranty is void and the tachometer cannot be returned.

3) Each tachometer is bench tested before it leaves. This leaves the indicator at a position other than zero. Once you install the tachometer, the indicator will return to zero when the engine is stopped with the "Engine Stop" handle before the ignition is switched off.