If you are asking about compression numbers, they should be around 150psi.
Don't know much about lawnmowers but I work on cars. So either ur threads in the head are stripped and/or ur exhaust system is clogged, making the pressure come out of the weakest area which in your case is the spark plug hole
buy a gapper and .044
Honda K2400HH pressure washer pump how much oil do you need to put back in
2.1 litres - fill until it leaks out the bung hole.
The usual kind of spark plugs for this motorcycle cost about $8-$10 each. You can get a discount if you buy a set of four.
1&1/16 quarts
21 psi
It cost me $170 for parts (2004 Honda Accord EX) + $110 labor.
go to auto zone and give description of car ask for bosch spark plugs they come with the gap specialized to ure car specification.
Around 40 PSI with the engine at full operating temperature.
I would take it to a different garage for diagnosis,
The most common reason a Honda burns up coils is because other ignition components are worn out. A healthy igntiion system with new factory parts requires about 12,000 volts to fire a spark plug. An engine with worn out spark plugs, distributor cap and rotor, and spark plug wires can require as much or more than 25,000 volts to fire a spark plug. The excess energy required to fire the spark plug has to be generated by the ignition coil and causes it to burn out. Two additionl point. Always use factory Honda ignition component and replace the ignitor when replacing the coil. These parts are not cheap but Honda ignition systems work best and last the longest with Honda parts.