Yamaha 2005 2stroke tach?

crazymac680 · 20 April 2011, 18:03

I'm looking for a tacho and some advice.
Is it worth getting one that gives me faults? How many faults can they recognise?
There is one on ebay. How much do you think it's worth? I'm considering putting in a bid
Thanks
http://cgi.ebay.co.uk/YAMAHA-DIGITAL...#ht_500wt_1156

9D280 · 21 April 2011, 14:36

That will depend on your engine.

Any pulse counting tach should work regardless, as all they do is count the number of pulses per second that your alternator is producing. I have used my old Suz one on both the Yam that replaced the Suz and my current Merc. Al lthat may need done is to adjust the "pole count" on the back of the tacho - it;s a 3 position switch. Becomes obvious pretty quickly if it's set wrong!

As for the warning lamps, whether they work or not will depend if you have the sensors on your engine / outputs form the CDI or not.

crazymac680 · 22 April 2011, 14:41

Thanks
I'm not sure what sensors my engine has. I'm hoping that all Yamahas 90hp 2 strokes made in 2005 have the same sensors and someone with tell me
Dan

C-NUMB · 22 April 2011, 17:09

At least you will have RPM, trim indicator, overheat alarm, oil level/alarm, volt, engine hours and speed with original gauges. Maybe forgot something...What the speed is based on, don't know, but it is not gps anyway.

Cooling water pressure and fuel consumption would be nice to have......

crazymac680 · 22 April 2011, 21:39

Really that much? That would be awesome. At the moment I'm guessing that I would be informed of these faults via various beeps and tones? I have 7 little wires coming from my control box that aren't connected to anything. Does anyone know what each does?
Thanks
Dan

Poly · 22 April 2011, 23:17

RED +12 V (always on)
BLACK GROUND
YELLOW +12 V (when ignition on)
GREEN Tacho Signal Line
ORANGE Trim sensor

What other colours have you got?

9D280 · 02 May 2011, 14:17

For what it's worth, the speed on that lot on ebay is pitot speed. You can tell from the length of clear palstic hose in the kit. If you look somewhere near your steering mount, there will be a small rubber hose capped off. It leads to a small hole on the front of the leg, and it all being Yam will be nicely calibrated to work out speed (through the water) from the static head.