Hello Gentlemen, I have a subjective question for you. At work, we have two Honda engines. A 20hp V-twin, GX620K1 VXE8 GCAD-2012373 on a Thermaldyne Predator welder, and an 11hp GX340 QA2* GC05-3267333 on a NorthStar 3000psi cold water pressure washer. The GX620 has 369.4 hours on it, by hourmeter, but is a 1995 model. The GX340 has unknown hours on it, and is at least 5-6 years, and has been beaten on.
Here is my question. I am pretty sure the GX340 could use a valve adjustment, or at least check. What about the GX620? It has low hours, but is almost 15 years old. The GX340 lives in a 40-60 degree farenheit compressor room(depending upon outside ambient), while the GX620 lives in a 40-50 degree battery shop. The GX340 is used primarily on a 35-40 degree refrigerated loading dock, while the GX620 is used primarily on the same dock, or in a -3 degree freezer.
Also, is there anything to watch out for while doing a valve check? I have the maintenance sheet for the GX340 from Honda, and the procedure looks straight forward. I believe the GX620 will be similar, though I will have to watch the valves to make sure they are on the base circle. I have done B&S OHV's, and have done automotive valves. I have just never done a Honda.
Seth K. Pyle
Nothing is sailor-proof...