Tuning a Jiffy 30

[Hawgeye]

I went in to get my ice-auger tuned up and was told by one of the mechanics that they won't do it until the weather is colder. Is there really an issue with replacing the carb kit and tuning at room temperature? I guess I am more ignorant that I thought...I didn't realize there would be that much of a difference...I learn something every day! :)

[thump55]

It may need some slight tweaking to get it perfect once it gets cold, but they should be able to get it pretty dang close.

[Dacotah Eye]

I found this on a forum some years ago and the guys that I have heard back from swear by it. I guess the tuning works best when it is done in the cold.

ADJUSTING TECUMSEH 3 HP CARBURETOR
pop the red caps off.

Close both jets GENTLY

Open the Low speed 1/4 turn

Open High speed jet 1 1/4 turn

Start engine.

Adjust low speed until idling smoothly.

Open her up wide open.

Adjust High speed until engine transitions smoothly from idle to high speed without bogging.

Shut engine off. Let it cool.

Once engine is cold. Fire it up and let it idle for 30 secs. Open it up wide open again. Adjust if necassary.

The trick with the Jiffy's is to tune them during cold (ice fishing) weather.

Low speed screw,the one on the left.

High speed on the right.
_________________________

[Hawgeye]

Cool, I do learn something everyday. Guess that is a good thing.

This has been sitting in my fathers shed for a few years and needs a carb kit and tune-up. I've heard these are pretty strong ice-augers so I will see if it works better than my Eskimo Mako, which by the way, has worked really well for me for a couple of years. Not super fast but really effective.

I may end up selling them both once I get them up and running well so I can buy the Lazer. $440 is pretty steep but maybe I can get a pretty good down payment by selling the other two.

Thanks for the feedback.

[scott_r]

Before you take it in for a tune up try removing both your screws and shoot some Seafoam in there. That might just get it running tip top. I also suggest using Seafoam in your gas as well as using Amsoil for your oil at a leaner mix. Ive heard that doing these simple things will get an auger running real good.

Cheers!!

[T Mac]

I went in to get my ice-auger tuned up and was told by one of the mechanics that they won't do it until the weather is colder. Is there really an issue with replacing the carb kit and tuning at room temperature? I guess I am more ignorant that I thought...I didn't realize there would be that much of a difference...I learn something every day! :)

LOL!
Do they do it outside in the cold?
;)... I did mine in a heated shop last winter. Carb kit, and fuel pump replace...it ran way better.
Then I ran some Seafoam through it and she purrs like a kitten.
It was easy. Even a Caveman could do it....in a heated shop.

[Hawgeye]

The only reason that I was thinking I should have a pro do it is that when I push the primer, it feels plugged. I cannot get it to fire and the plug is dry as a popcorn fart.

Must be something either stuck or plugged in the carb causing it not to run...like I said, it has been sitting unused for a few years and noone has looked at it.

[Backwater Eddy]

If it has low hours on it, and is not fully broken in...it just may need to get broken in properly to run well. Most new augers take years to get broken in, because people actually do not run them that long to do so.

This is the method to get the Jiffys to seat in, and break in.

Remove the power head.

Fill a tall 5 or 6 gallon pail 1/2 full of water to add weight and stability.

Fill the tank on the Jiffy with the proper mix or gas and oil.

Start it up, let it warm up 1 minute, then put a zip tie on the throttle to get it wide open.

Set it on the pail securely....and walk away.

Let it run the tank out, then refill, it will be broken in and behave much better from then on.

If you already got after the screws and tinkered it so it is out of whack completely, well then it is best then to bring it in to a shop and have them run it on a dyno to set the high and low properly. No need for it to be cold out to do that, it's an air cooled engine..just like a mower. The dyno is the key to set it under load to top performance under load.

$50 is a fair price for a tune in on a dyno and a carb reset, plus parts if required. I would also upgrade the spark plug to a like listed NGK, they preform better. I also run a shot of Stabil Marine Blue formula in all my mixed fuels, good stuff, keeps everything clean and running properly.

[Suzuki]

What they are saying does make some sense. 2-strokes are very mixture sensitive which is greatly affected by temperature. Ideally you want it running perfect at the colder end of the temp spectrum. That way it just runs a little rich when warmer out. If you tune it perfect while temp is too warm then you could end up running it lean when bitter cold out and burning it down.