Jiffy 8" 3hp throttle spring issue.

[sonoranhope]

I have a Jiffy 3hp 8" auger, and I have read many posts about carb adjustment and such, but my problem is when I pull the throttle "slightly" to drill it starts out just fine, but as I continue to apply more power thru the throttle handle it will bog out and die unless I let off the throttle.

I have watched very closely to the mechanism that happens when I pull the throttle.

This is where it gets hard to explain...

There is a spring that extends as i pull the throttle and the auger starts to spin.... As I throttle it up the spring extends to a certain point before it snaps from whatever it is it is pulling and seems to flood the motor out.

Is there a "simple" fix for this?

What is this spring I see? I assume a throttle spring?????

Any help would be appreciated.

Thanks~

Wil

[BIG DS]

The spring that you are talking about is the throttle/governor spring. A couple of things you can do to help rememdy the problem. First, get a can of carb cleaner and spray off the outside of the carb and then remove the throat gaurd on the carb and clean out the inside. Cycle the throttle shaft back and forth as you are spraying it off to make sure it is loose. They tend to get gummed up from the oil residue left behind. Then, looking at the side of the motor with the throttle lever to your left hand, there should be two screws on the side of the carb. The left screw is the low speed screw and the right is the high speed screw. If there are red caps on the screws pull them off with a needle nose pliers and save them. Turn the left screw clockwise until the motors starts to sound like it is going to die. Then turn it counter-closckwise about 1/4 of a turn. That should get you real close on the idle mixture. Then try throttling it to wide open and see what happens. You may also need to turn the high speed screw open (counter-clockwise) a bit too. The best way to tune the high speed is on the ice. If you can. It should run a bit rough wide open with no load. Then when you start drilling, it should clean right up and scream. If you find a spot on the high speed screw adjustment that has the motor running real sweet with no load, turn the screw another 1/4 turn out and that should get you where you need to be. You have to adjust the high speed on these 3hp just past the sweet spot with no load so that they have plenty of fuel when they are under load or you can burn them up. When you are done with the adjustments, replace the red caps to save your settings.