You don't say what motor you have? Valve adjustments aren't difficult if access to the adjustments is simple. Meaning taking out 4/6/8 bolts to remove the rocker-cover and good access to the rockers. I've done my own on my 9.9 Merc kicker. You tube would have a video maybe? Simple wrenches/screwdriver and two thickness feeler gauges. Intake will be thinner than exhaust. New gasket and some silicon sealant is needed.
Originally Posted by mrmike130s
It’s very interesting. Adjustable valve tappers. I’m not a Honda driver. I didn’t know they were still use adjustable tappets. As far as I know all the automotive manufacturers use hydraulic tappets. The 225 hp motor is a Pilot V6 I think. I have a new 225, will have dig deep in the tool box and find the feeler gauge. Retired automotive tech in a domestic dealership. Haven’t adjusted tappets in 20/30 years. I did have adjust the valves on a KTM 525 a few years ago.
Our Honda CR-V is due for the check/valve adjustment at 110,000 miles. I'm debating doing it myself.