Diagnosing a fuel issue. Dear ATVC: Hello – new to the forum. I picked up a second hand Coleman AT125UT. The 125UT has some issues that needs to be fixed. At the current moment I’m having an issue with it revving to high. First start up after cleaning fuel tank, replacing carb and spark plug […] More »

The Coolster 110. Dear ATVC: I’ve been trying to repair my son’s Coolster 110 3050D for a long time. The wiring harness is missing plugs and I don’t know how to wire it . There’s some steps that are on here but I still can’t comprehend without pictures. Can someone please give the steps along […] More »

Looking for maximum comfort. Dear ATVC: I am trying to decide on my next used ATV purchase. I currently own a 2009 Yamaha Wolverine and it rides a bit rough. I find it gives me lower back pain and pain in the wrists. The trails I ride on have a lot of roots and rocks. […] More »

Going electric causing issues with the instrument cluster. Dear ATVC: I have recently converted a 2021 Polaris Sportsman 570 quad to electric using a ME1304 motor driving a toothed belt to the original gearbox. The problem I have, as I no longer have an engine flywheel, there is no pickup coil sending an AC signal […] More »

Valves on both ends? Yes, sometimes. Dear ATVC: Appreciated your article on the two-stroke power valve but have to laugh when you say the to-stroke engine is designed around using no valves. If it has a reed valve on the intake side and a power valve on the exhaust side, I’d say it is a […] More »

Is it possible? It is! Dear ATVC: Anywhere I could maybe get a gas gauge cap for an 86 Suzuki Quadrunner? After searching around I’m guessing they didn’t actually make one but is there a universal something out there I could use? Looking also for a 02 Bombardier gas gauge cap. Any ideas? What you […] More »

The big Mammoth 800 doesn’t want to move. Dear ATVC: North Central Ohio here. In a town of 45,000 people I cannot find anybody that will work on my Kazuma Mammoth 800 UTV.. So I guess I’ll have to hack it myself. Fairly handy if I know where to start. I can shift the transmission […] More »