MyFishFinder.com Just like iceshanty but warmer
ADJUSTING TECUMSEH 3 HP CARBURETORpop the red caps off. Close both jets GENTLYOpen the Low speed 1/4 turnOpen High speed jet 1 1/4 turnStart 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. ______________________ ___
Those jiffys need two adjustments one for warm days and one for cold .Maybe someday Jiffy will add that adjustment so you can just turn a knob for cold or warm days
Heres a link to Tecumseh engines. It helped me alot on rebuilding my older jiffy and it works great now.http://www.cpdonline.com/692508.pdfYou can look up the page you need and then print it out to take into the shop with you.Good luck