Jiffy 2 Horse STX

[Adam.Braaten]

Does anyone out there have a Jiffy STX with the two horse Tecumseh engine? Mine is extremely cold blooded and doesn't like to start. Any body else having this problem? I completely drained the gas at the end of ice 2008.

[cold one sd]

Did it start and run better last winter?

[NAG]

I have 3hp Jiffy Stealth STX and I experienced the same cold blooded issues. This year I changed the spark plug, ran some SEAFOAM through it, re-adjusted the carbs and it runs like a champ now. I also mixed 3 capfulls of SEAFOAM into my 1 gallon of gas and use 92 octane gas to help keep the gas fresh.

[smeese]

I have the 3 HP STX and it starts on the first or second pull everytime. Unless it is really cold I usually do not even have to choke it.

[smeese]

I have the 3 HP STX and it starts on the first or second pull everytime. Unless it is really cold I usually do not even have to choke it.

[smeese]

Sorry double post

[TurnUpTheFishing]

Is it a new auger? Mine was a little hard to start cold when I first got it. Im guessing it was still breaking in because after a month or so it started running just fine. I switched to amsoil last year and it started running even better. If you have an older auger I would try running amsoil. Ive heard it best to run regular oil/gas for the first half gallon of gas in new augers though so if its new dont take that advice.

[Maverick]

I've had mine for 3 years now. I choke it till it pops, three or four pulls usually unless really cold out then maybe a couple more. I let it warm up at least a minute before drilling other wise it will drill about six inches and stall. Once it is warm, you cant stop it from cutting. My quess is an adustment, but I wouldn't know where to start.

[BIG DS]

I have a 3 year old 2hp STX that I broke in on 100:1 when I bought it new and I have to pull it about three times with full choke when it is cold and it will start and die. Turn the choke to half and give it a tug and it will start and idle until warm everytime. The 2hp motors have a fixed jet and can not be adjusted. They are jetted to run lean due to emmisions standards that were put in place about 4 years ago. They do burn cleaner but they are very cold blooded. The reason I brought up the 100:1 mix is that there is no oil residue the engine has to drag along while trying to start when cold. Makes for easier starting.

[adamr]

I have a new 3 hp stx did the same thing I took it to a small engine mechanic he said the tree huggers made them to lean to cut down on exaust he drilled the main jet bigger runs awesome now

[smeese]

Yeah mine was new this year. I did run the first tank on a 24:1 ration but plan on switching to Amsoil now. How much was it to jet your auger?

[Rick G]

Got the 2hp stx and has been cold bloded since the day I bought it but when its warm its faster then all other augers except the nills.

[harleyharry]

You need to be careful when comparing the two hp and the three hp engine. Even though they are both built by Tecumseh, they are as different as night and day.

The two hp engine seems to be a little more fragile than the three hp. The three hp engine is a lot more forgiving on adjustment errors and fuel mixture errors than the two hp. Also, the adjsutments on the three hp are different. The old style three hp had both high speed adjustments and low speed adjustments. The two hp has only had the low speed adjustment. Even though the low speed adjustment can effect the high speed running of the engine, I have seen many two hp engine seized due to incorrect adjustment.

Harry

[Rick G]

There is no high or low speed needle on my 2hp except the idle ajustment. Kinda hard to screw that up.

[Caleb S]

Sounds like a dirty carb. Unless you drained the carb itself or ran it out of gas after the tank was drained there would still have been fuel in the carb to deteriorate and gum up. Also, its not the best to actually run the engine until it dies from lack of fuel. When the engine continues to surge/sputter from fuel starvation it's also starving for lubricant since the oil is in the gas.

[Jesse Drummer]

try bumping up the idle a little! its helped alot. and it doesn't shut off when walking to another spot to rip a hole.

[Rick G]

Or if it is real bad try runin some seafoam through it.

[gopher_nation]

I have a 2hp STX, bought it used from a guy that drilled twelve holes with it then put it away with the gas in it for two years then I got it. Ran terrible obviosly, brother cleaned out the carb, which helped a lot. I put two oz. of seafoam in each gallon along with 100:1 Saber. Had to bump up the idle a bit to keep it running between holes. Finally this year it's running like it should. Full choke one or two pulls, sputter stop(sometimes), half choke, one pull and she's running.

Get it broken in, use seafoam, take a look at the plug. You'll figure out the tendencies.

[Adam.Braaten]

Has anyone had a problem with the recoil locking up? I use the decompression valve but sometimes when I pull it feels like it wants to rip my arm off. It's terrible.

[givetoget]

Yes I had this happen on mine also. What I've found was that i have to watch decomp. valve very close. While trying to start it,which I have not fully figured out yet,(bought it late season last year) any tiny little spit or sputter the decomp. valve pops and you have to push it again. I've had it happen just by pulling recoil already. since I watch it realy close it is alot easier on the arm. Hope that helps you Adam.

[Adam.Braaten]

Thanks Casull, I know the valve is sensitive but man, sometimes it's almost like the engine is locked up. Either way, next pull it goes just fine.

[Jethro80]

Amsoil! I have a cold blooded Jiffy and it really helped running synthetics

[Sybar]

amsoil! might want to throw a little seafoam in there too!!

[BIG DS]

Stay away from the seafoam if possible. It tends to lean out the fuel to air ratio a bit too much. If you switch the Amsoil or some other synthetic and it does not work you may need the idle jet opened up slightly. This requires taking the carb off and drilling it out. Something that should be left to a trained professional.

[Hafnutz]

Idle jet is adjustable don't need to remove carb to adjust it. Main jet is fixed. I bumped the idle speed up on mine a little. Starts good but still needs 3-4 pulld on full choke when cold. After it warms up it starts on about 1/2 pull. I'm using synthetic oil with 91 octane unleaded non-oxygenated gas. I also put about an oz of Seafoam into a gallon of fuel. I have been using Seafoam for years and never had a carb. problem