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1973 Factory Tach 140-160 1973

posted by  Volvo From Heck on  Mon Aug 11 15:23 CST 2014
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last visit: Mon Oct 13 20:56 CST 2014
[RELATED]

There is a screw adjustment for calibrating the tach but you'll have to remove the tach from the dash. Set it up with +, - and signal from the coil under the hood. Use a known good tach also attached to compare readings. Make sure the the tach is meant for the B20 as it was also used in the 164 with the B30 6 cylinder. The tach cover may have embossed either 4 zyl or 6 zyl on the outer surface. -- Dave






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