Tach install on 93 C40PLRR

[sea-nile]

Well...It;s time to see what prop this little monster wants...Got a Faria 7000 RPM universal ...the leads are hooked up..its in the dash....Connected to the original harness ....It comes on when I turn the key...Then just slowly rotates all the way back to zero....Im hooked up to the green wire coming out of the harness( thinking that's the signal wire)....How did I screw up 3 wires....And before anyone says, because your an electrical retard....I'll beat you to it....LMAO.....Any thoughts guys or gals???

[99yam40]

what is the tach set for?
and is the motor running?
or just turned the key to on?

[boscoe99]

Green is the tachometer signal wire. Lots of connections on the motor. I would start there. Go all the way to the lighting coil if necessary.

screenshot captor

[sea-nile]

Hi 99....according to farias cheat sheet...its set on 4....and yes the motor was running....

[sea-nile]

cool..thanks once again boscoe....I was hoping to just plug in under the dash an rock...but...thats not how my thing goes with electricity...lmao...unreal...Ill just run a wire back to the motor & tap in where it comes out from under the flywheel...unless I have to be in front of a rectifier or something ???.....Have I mentioned..I HATE wiring....lol

[99yam40]

Hi 99....according to farias cheat sheet...its set on 4....and yes the motor was running....

well being I do not have that cheat sheet, what does #4 represent on that sheet?
You might try switching it back and forth a few times to make sure the internal connections on that switch is making good

what con*****er do you have ?
703?
I am guessing you hooked up to the green, red, and black that comes out of the con*****er.

I am thinking Boscoe was saying to check the wiring to make sure there is good continuity all of the way from where you hooked up ,to the motor

[boscoe99]

That is exactly what Boscoe was trying to say. Did not say it very well obviously.

[sea-nile]

99yam.....I have the 6 x3 side mount con*****er... the motor came with the 703 con*****er....from what faria says.. 4 represents the # of poles..(c25-c55) 2 cyls..1984 to present...And no boscoe...I understood exactly what you were saying with that diagram....those green wires were ALL i was concerned with...ie..(check ALL connections & make sure you were getting juice)..and yes...I had it hooked to the green red & black..and just to be sure I then disconnected & jumperd it to the hot & ground direct to the battery..just to make sure....I will disconnect all green connections & wire brush them just to make sure Im clean..

[99yam40]

I thought they were 6 pole , but then I thought that motor was a 3 cylinder

[sea-nile]

99yam...yea ..I bought it thinking the same thing...got it home & discover .its a 2 banger...i was all pissed off..until I found out it was the motor the Hobie sent them out with...I have the 13.3 utility skiff...i was sweatin about hangin 200lb 3 cyl on the back of it..as I bought it with a 25 evinrude..(120lbs) and sat perfect in the water...with just me ..it worked out sweet...but 2 guys & it just wasnt strong enuff..this yamaha is 140ish I believe..and its a BEAR....

[boscoe99]

[99yam40]

the parts break down shows the C40PLRR has 2 cylinders and 2 carbs,
but looks like all of the other 1993 40s have 3

[boscoe99]

I am failing to make a connection between the number of cylinders and the number of poles. What am I missing?

[99yam40]

I am not sure myself, but even that chart you posted has 4 pole on 2 cylinder motors and 6 pole on 3 cylinder motors.
Since the tach runs off of the charging system ,maybe the lighting coils are different on the 2 and 3 cylinder motors

[boscoe99]

I am seeing conflicting Yamaha data. Nothing unusual about that.

OP can try both the 4 pole and the 6 pole settings. See what happens.