Suzuki ATV Master!
Join Date: May 2014
Location: Middle of Alaska
95 has the CV carb. You might try replacing the spring on the top of the slide diaphragm. They get weak and the slide opens to early, which causes a lean condition that makes it cough. Not enough fuel. This can also make the motor run hotter.
If you ride it and hold the throttle steady, will it start bogging or it is okay as long as you don't change throttle?
Could also be the opposite problem, the slide is not opening correctly causing it to run very rich. Usually you'll get a few backfires at half throttle or higher if this is the case.
If I recall, the pilot screw is on the bottom of the carb and about 1" away from the transmission, making it almost impossible to get a screwdriver in there to adjust it while it is running. I cut a small screw driver down to fit and threaded the end so I could put a nut on it after I slid the screwdriver in. Adjusting while it is running is really the only way to make it exactly what you need. While they say it does effect the performance above 1/3 throttle, my testing shows that when it is way off (full turn), it can effect it up to 3/4 throttle. Also, the screw is a fuel screw, meaning, the more open (out) it is, the more fuel the engine gets. (as oppose to a pilot air screw, where the more open it is, the less fuel).
The reason my first reaction is for it to be running lean is because hotter 4 stroke engines tend to bog more and get hard to start as they really need more fuel. Sometimes just opening the choke a little will clear that up.
One last thing, the float level is very critical. It only has a 1mm tolerance range... Meaning +/- .5mm from what the manual says. (13mm?) To high and it will slobber all over itself at idle and be hard to start when warmed up. To low and it will be leaner and not start well cold and will tend to run better at low speeds with the choke on.
2013 Suzuki King Quad 500 AXi w/EPS
1990 Suzuki LT-4WD 250
and lots of snowmachines