68 Offshore restoration

[Sharpie243]

What do you mean by stops? With a laser tach, where do you check? Flywheel teeth?

I have a cheap chinese oscilloscope, never have turned it on even, but I've been thinking of using that to check the gear counter pulsars output and extrapolate rpm from frequency.

 

[Sharpie243]

I was able to get some uhmw cut for the anchor nest. The aluminum is kinda crude, I'll probably replace with a couple pieces of angle, soon. Also tested the trolling motor for the first time ever, figured I should if it's partly a backup plan of the main goes out. Hasn't been used for a long time so there was dust or corrosion on the control contacts, once worked loose it seems to work. I found a cheap laser tach with reflective tape online, when it comes I'll perform more engine testing.

 

[SHSU]

What do you mean by stops? With a laser tach, where do you check? Flywheel teeth?

I have a cheap chinese oscilloscope, never have turned it on even, but I've been thinking of using that to check the gear counter pulsars output and extrapolate rpm from frequency.

You should have an idle speed screw/stop to adjust your idle speed. Also, if you are Out of the Water I have found my motor to Idle higher then when in the water.

As for the tach, mine came with some reflective tape I put on top of the fly wheel.

SHSU

 

[Sharpie243]

You should have an idle speed screw/stop to adjust your idle speed. Also, if you are Out of the Water I have found my motor to Idle higher then when in the water.

As for the tach, mine came with some reflective tape I put on top of the fly wheel.

SHSU

This year of Suzuki didn't have idle speed adjustment. I think previous years did, I don't remember the reason for it going away. Doesn't really explain one spark plug firing slower than others anyway. The cheap tach has a wire wrapped around a spark wire and senses the em field, I'm wondering if that wire length just happens to have some resonance that makes it appear slower.

Clearly it's getting spark, so I plan to just go use it on the river again and see if the motor will rev higher or not, it did before. I don't really have a need to go 35 vs 25 mph, but a little wary of something not working right on the water.