Any ex-Force O/B guys here?

[TheTinMan]

Has anyone replaced their Force OB with another Make? Did you have to replace your tach?

My 1990 Sport V20 originally came with a Force motor, now has a Mercury.

Since I got my boat my tach has read roughly one half of what it should be. People have told me to check the setting on the back of the tach. I've looked a couple times and there is no adjustable setting.

I have Teleflex guages and found the following info on their website:

9. Why does the Force outboard engine require a special tachometer?

Almost all outboard engines that have an alternator can be monitored by our Universal Outboard Tachometer. That is because most outboard alternators have magnetic pole ranges from 4 to 12 poles. The tachometer is adjustable to those ranges. However, some late model Chrysler outboards and most pre 1993 Force outboards have Prestolite 20 pole alternators. The Universal tachometer is not adjustable for that number of magnetic poles. To expand the existing Universal tachometer from 4 to 20 pole would jeopardize the electronic noise filtering. Therefore, a tachometer that handles only the 20-pole alternator was created. The Teleflex catalog and brochures specify this tachometer, P/N 53743P. Most Force engines built after 1992 have more standard 12 pole alternators and can be monitored by the Universal Outboard Tachometer. If in doubt on the number of poles in a Force alternator consult our tachometer application guide, a Force dealer, or Mercury (the Force parent) customer service (920-929-5040).

So, sounds like I need to buy and install a new tach. Sound right to you guys? Just glad that I think I figured out my tach dilemma...not happy about having to buy a new one.