If the mower is idling at lower than normal RPM tighten the governor spring by cutting it shorter, this will increase the tension on the throttle and raise RPM. If the mower is idling at higher than normal RPM stretch the governor spring slightly to decrease the resistance placed upon the throttle.
After adjusting the governor spring to the desired amount of resistance test the lawn mower (with or without the air filter, if testing without air filter only test briefly). if everything is now working replace the air filter and throttle cable bracket.
We've created this site to provide clear instructions on how to repair various types of lawn mowers and other small engines. We also offer sales of refurbished lawn mowers, as well as servicing to keep your lawn mower running great.
If you have any questions head to the FAQ section of the site, if you need specific help visit the contact us page.