John Deere L-110 Knocking

[fredbetz14]

My lawn tractor has a significant knocking when starting up, turning off and when I depress the clutch pedal?

 

[ILENGINE]

Check the motor mount bolts. They will work loose even sometimes just an 1/8 of a turn which will allow the engine to shake mostly at start up and shut down, but sometimes when the pto is engaged.

 

[fredbetz14]

the mounts are tight, no movement. Could bad gas cause the knocking?

 

[Born2Mow]

Could bad gas cause the knocking?

• In my part of the country, Ethanol fuel can go "bad" in as little as 8 weeks. Especially if the vehicle is left stationary. The mere fact that you asked makes me extremely uneasy. If you have doubts, then change it.

• Lots of things can cause the engine to knock. Start with tightening every nut and bolt on the mower. When was the last oil change ? When was the last grease job ? How old are the belts ? Any broken pieces of belt flapping around under the covers ?

 

[fredbetz14]

changed oil two months ago. I am almost certain it is in the engine.

 

[fredbetz14]

I have drained and will fill with new gas and try today. Thanks

 

[Scrubcadet10]

does the knock get faster or slower, depending on the RPM its set at?