75 S/T 340 Carbs

John B. · Post by **John B.** » Thu Aug 17, 2006 9:27 am

Just picked up a 75 S/T 340 and the carbs are missing slides and needle-jets. My service manual doesn't give specs for slide cutaways or needle jets so wondering if anyone would have any spare parts or complete set of carbs. Thanks.

SHewelt · Post by **SHewelt** » Sun Sep 03, 2006 12:47 am

the 75-340 ST used a 2.5 slide. My info shows the same needle-jet (D-1393-5472 used on both 340 & 440, but the jet-needle (inside the slide) is D-1393-5492 on the 340. Sorry, all I have is MERC numbers & don't have a 340 to check for you.

John B. · Post by **John B.** » Wed Sep 06, 2006 9:52 pm

Thanks Scott. All I have is Merc numbers also. Actually I'm missing the jet-needles, I got it turned around, one slide, and one adjuster screw from the float bowl. The maintence manual doesn't give much info as far as sizes. One thing about my Skidoo manuals, they give actual numbers for the jets, needle-jets, and jet-needles. I didn't check to see if any of the TT carbs happened to use the same jet-needles.