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Jan 23rd, 2013
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What Tachometer Ranging Switch Setting? #12752664
05/12/18 02:49 PM
05/12/18 02:49 PM
Joined: Mar 2017
Posts: 71
Plano, Texas
D
DaveTV Offline OP
Outdoorsman
DaveTV  Offline OP
Outdoorsman
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Joined: Mar 2017
Posts: 71
Plano, Texas
Good morning all. Hoping to find a little help and avoid having the dealership take my boat hostage.

Does anyone know the correct setting for the ranging switch on the back of the tachometer for a Merc 225 Pro XS? The chart says open 2 and 3 for 6 cyl. Also says open 4 for 12 alternator poles. I know the engine is a 6 cyl but believe it is 12 altenator poles as well. Should I set it by engine or alternator poles?

The setting is currently on 2 and the tach is reading too high. It's an 8 position switch. The photo is not mine and an example only.

Thanks in advance for any help.


Re: What Tachometer Ranging Switch Setting? [Re: DaveTV] #12752800
05/12/18 06:23 PM
05/12/18 06:23 PM
Joined: Mar 2010
Posts: 6,490
Temple, TX.
T
T Bird Offline
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T Bird  Offline
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Joined: Mar 2010
Posts: 6,490
Temple, TX.
Try engine first.

Re: What Tachometer Ranging Switch Setting? [Re: DaveTV] #12752815
05/12/18 06:52 PM
05/12/18 06:52 PM
Joined: Mar 2017
Posts: 71
Plano, Texas
D
DaveTV Offline OP
Outdoorsman
DaveTV  Offline OP
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Joined: Mar 2017
Posts: 71
Plano, Texas
Will do. Thanks T Bird.

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