GCV190 Honda Pressure Washer won’t start

Looking for ideas. Trying to help a friend with a Honda Pressure Washer and from the looks of it hardly used. When I got it there had been a significant mouse infestation so I pulled flywheel and cleaned out all mouse nest/debris.
- replaced fuel
- new spark plug and ignition coil (which had been chewed on). Spark test shows spark.
- I was able to get it started briefly with starter fluid, but wouldn’t keep running. Figured it was carb problem, but I cleaned it out multiple times and still nothing.
- Checked rocker arms / looked good and gaps were fine on combustion and exhaust sides.

Completely stumped at this point. Any advice?