Hi, I would like to know what is the typical compression value of a Kohler 16HP singel cylinder engine?
Yes, decompression lowers cylinder pressure during low rpm while cranking. If you're concerned with compression, you need to do a leakdown test. Inexpensive (~$30) units are available through numerous eVendors. The leakdown test provides a metered volume of air that is translated and displayed on a pressure gauge simply labeled high (excessive leakage), moderate, or low (nominal leakage).
It's an L-head engine and once they get a few hundred hours run time, the valves wear into the hard seat, lash goes to zero, and they become hard to start. You can check valve lash by removing the crankcase breather (two screws). If lash is near zero, time for a valve job. Plenty of how to videos on the web. If it's easy start, just low power then less likely a valve lash issue.
There are many things that cause low power. Bad fuel, water in fuel (fuel bowl), fouled carburetor, poor spark, fouled plug, improper plug gap, wrong plug, weak ignition module.
9/12/2023 10:24:23 AM •
Toro Garden
•
Answered
on Sep 12, 2023