Small Engines (Lawn Mowers, etc.): JD LT180, gas filter, spark plugs

Question
I have about 115 hours on engine and want to know at what hours I should change spark plugs, gas filter, and air filter I have there kit for this machine.

Answer
Every 100 hours or once a year.  The foam portion of the air cleaner needs to be shaken out every 25 hours minimum.  If you mulch or bag leaves it really needs to be done about every 5 hours.

you can easily find this imformation in your owners amnual.  If you have lost yours you can down load one free at Johndeere.com