I was able to adjust the intake valves without removing anything. I have a full cab with soft upper doors I remove for summer, so access to exhaust valve adjustment was going to be a big deal. I cut a hole in the plastic under the seat so I could adjust the valves . It took less than 10 mins. I replaced the piece I removed with a couple screws and sealed it with silicone till next time. Simple and fast. I'm experienced with adjusting valves as I was a auto mechanic for a lot of my career. From start to finish including making the access hatch was under 30 mins.