Yamaha 6Y5-8350T-82-00 digital tachometer

[sveintem]

Dear all,

I have a Yamaha 50HETOL 2 strokes outboard engine. It comes with a digital tachometer incorporated. I installed it and when I run the engine at full speed the maximum rpm that it shows is 2100 and the overtemperature alarm is always flashing, but the engine is running well and it is not overheated. As far as I know this tachometer is used for both 2 and 4 strokes and there are 3 switches on the back that have to be adjusted according to the motor type.
Please, can you sent me the right switches adjustments for a 2 strokes motor? because I could not find this in the installation manual.
Thanks in advance

Sergio

[boats.net]

I don't have any information on that model motor, It's not sold here in U.S..But You need to reset dip switches in back of Tach. Switch one is for trim sender, count the number of wires coming out of trim sender on transom bracket, if 2 wires set dip switch up, if 3 wires set switch down. Switch two is alternator poles, set it to up postion for 6 pole alternator and switch three needs to set in down position for 2 stroke engine.

[sveintem]

OK thank you very much. At least I have a mistake because switch 3 is in the up position. I will reset it and test it running