[cybrshrk]

I picked up a vibra tach (b&s model 19200) today. The directions have me stumped. Can anyone explain in clear, simple terms how to use this? I put the thing on my engine and it bounces all over the place. The thin rod (with yellow loop at end) that extends out vibrates at any RPM setting on the device. What I tried to do is extend the rod out to 1750 RPM setting and laid the device on the engine block. The device danced all over the engine block, so I sort of held it in place with my finger. The little wire did vibrate back and forth...but it vibrated at any RPM setting I tried. I'm lost. Any help is appreciated.

 

[geogrubb]

You extend the wire until it forms it's biggest loop like a figure 8 and the dial will show the RPM. Have a good one. Geo

 

[sparktester]

Good vibrations!

Try placing it on the solid flat area of the blower housing it always worked for me. A good flat surface will give the best reading. They also will check other machines that make a rotational movement. I would bet that it would give you a reading on the hood of your car too! It dose make a figure eight when it is correct and the small yellow loop at the end will almost come back to the meter on both sides that is how wide it can go. good luck!