LT80 cylinder boring

[LT80]

Aenima, After yesterday, you should remove your steeler banner..
Same thing year after year, good, bad, ugly, then a hella lota luck. And after all that still pray the other team misses a field goal.
Ya think I'd get used to it.

[Aenima]

Hahaha... The Bengals?!?!? The feak'n Bengals?!?!! Not sure what happened to Reed in the offseason, but I'm not used to pray'n for him to make a FG!!!

[WestTexasKing]

Hahaha... The Bangels?!?!? The feak'n Bangels?!?!! Not sure what happened to Reed in the offseason, but I'm not used to pray'n for him to make a FG!!!

The Bangles?

[Aenima]

Lol might as well have been them....no diff!

[Aenima]

okay..............ummm it doesn't fire right up like I previoulsy stated. It takes a while to get it going...it'll start up after a couple minutes. I tried several times to start it with choke, no choke and with no throttle. The only way it'll eventually start is if I have er full throttle and it doesn' just fire right up...you can here it struggling like it wants to start. after doing that for a couple tries it will fire up and bog for a little then clear. My inexperiance tells me it's getting too much fuel if it wants to start when I let more air in.......I just dropped the needle clip one notch and replaced my old uni filter with a new one everything else is stock. It was also doing this before the rebuild. I'm attaching a pic of the plug. This is after I had it running yesterday and my daughter rode it around...then it sat over night...tried starting it for a minute or so and this is what it looks like.

This is when cold starting only....it hot starts in second

[WestTexasKing]

She's rich.
Drop a size on the pilot and adjust air screw 1.5 turns out.
Clean or replace the plug. It'll help with starting.
If you get it started and turn the air screw out and it starts to rev up, you getting close. You should be able to lean it almost to the point of dying with the air screw, and to the point where it almost bogs out with too much fuel. 1.5 turns is where you want it to idle best.

When the idle circuit is correctly tuned, a cold engine will need the choke to start. Also, if you use the choke, keep the throttle closed. It doesn't work with the throttle open.

[LT80]

There is no air screw on a LT80.
Your correct in thinking that your getting too much fuel. Fuel is getting by the float needle.
Many pages of reply's can be made about the petcock, float needle, and hydraulic weight of the fuel but we can cut to the chase and simply install a inline on/off valve on the fuel line. Shut the valve off and either run the machine out of fuel or drain the float bowl.
About 3 bucks at the autozone lawn mower section.
Let us know how that works please.

[WestTexasKing]

I thought the KFX80 was identical to the LT80?
It's got an air screw...or at least the one that I worked on had one.

So how do you tune the engine down at idle? Just different pilot jets?

[LT80]

They are the same. That is the idle adjustment screw.
It's not a air mix adjustment like some carbs have.

[WestTexasKing]

No, this one had an idle adjustment AND an air screw, just like the mikuni carbs.
It is common to put a larger or difference aftermarket carb on them?
I should have taken some pics, but I didn't know at the time it was any different than OEM LOL