Back in the 70's I took a class called 'Jerry Burak's tuning for performance', this guy is the master of the two stroke engine. He had plexiglass expansion chambers that he pumped cigar smoke into to see how they worked and why they did what they did. He explained all the different jets and what they did and when. It was a wealth of knowledge that I still use to this day. Fuel injection has changed a lot of that, but motorcycle carburetors are really pretty basic and simple. Happy to hear you figured it out, an under performing dirt bike just isn't much fun.
That sounds like it was an amazing class you took. I would really like to do something like that where i can see it all work. It makes things so much easier when you see things in action. The bike really works good now, but runs slightly rich i would say. I think i can just adjust that out of it with the screws.
@@RacerRed The air screw & pilot jet meter the mixture when the slide is closed. The needle jet and jet needle when the slide is moving up and down, mid throttle. Main jet is WFO. Crisp throttle response will most likely be by raising or lowering the needle position, as the needle is tapered. Raising the clip lowers the needle, leaning out the mix.
I have the exact same bike. I replaced the jet block gasket early on. Eventually my carb started leaking, I bought a rebuild kit for it and it was still leaking. I got pissed and ordered a smart carb. I wouldn’t say it has more power but it does run well and it does seem to get a little better mileage out of a tank of gas. I bought a Sherco 300 sef a year ago and haven’t ridden my Husky as much this last year, but I cannot bring myself to sell it. Simple carb bike, w/ kick start, so I will likely hang onto it.
Back in the 70's I took a class called 'Jerry Burak's tuning for performance', this guy is the master of the two stroke engine. He had plexiglass expansion chambers that he pumped cigar smoke into to see how they worked and why they did what they did. He explained all the different jets and what they did and when. It was a wealth of knowledge that I still use to this day. Fuel injection has changed a lot of that, but motorcycle carburetors are really pretty basic and simple. Happy to hear you figured it out, an under performing dirt bike just isn't much fun.
That sounds like it was an amazing class you took. I would really like to do something like that where i can see it all work. It makes things so much easier when you see things in action. The bike really works good now, but runs slightly rich i would say. I think i can just adjust that out of it with the screws.
@@RacerRed The air screw & pilot jet meter the mixture when the slide is closed. The needle jet and jet needle when the slide is moving up and down, mid throttle. Main jet is WFO. Crisp throttle response will most likely be by raising or lowering the needle position, as the needle is tapered. Raising the clip lowers the needle, leaning out the mix.
@@tomdoe4295 I wonder if i am noticing this mainly because it runs so clean on bottom now. Maybe the needle is worn..
I have the exact same bike. I replaced the jet block gasket early on. Eventually my carb started leaking, I bought a rebuild kit for it and it was still leaking. I got pissed and ordered a smart carb. I wouldn’t say it has more power but it does run well and it does seem to get a little better mileage out of a tank of gas. I bought a Sherco 300 sef a year ago and haven’t ridden my Husky as much this last year, but I cannot bring myself to sell it. Simple carb bike, w/ kick start, so I will likely hang onto it.
Nice day for a ride!!
Yeah it was! The soil really wasn't bad in a lot of places. Little muddy in others.