Lawn Mower Problems & Diagnostic Help
Having trouble with your lawn mower or zero-turn? Start with the symptom instead of guessing which part is bad. Use the diagnostic guides below to troubleshoot starting, fuel, ignition, electrical, PTO, deck, belt and hydrostatic drive problems before replacing parts.
Starting & No-Start Problems
Mower Clicks but Won’t Crank
Mower Cranks Slowly & Starter Struggles
Engine Kicks Back When Starting​
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Fuel & Carburetor Problems
Mower Starts Then Dies
Mower Runs Only on Choke
Mower Fuel Pump Not Pumping
Mower Has Gas in the Oil & Carburetor Flooding
Running & Engine Performance
Mower Surging & Hunting
Mower Backfiring & Popping
Mower Bogging Down & Losing Power
Mower Smoking White, Blue or Black Smoke
Mower Engine Runs Too Fast
Mower Dies When Hot & Shuts Off
Electrical & Ignition Problems
Mower Has No Spark or Weak Spark
Mower Battery Keeps Going Dead
Mower Keeps Blowing a Fuse
Mower Safety Switch & Interlock Problems
PTO, Belt & Deck Problems
Mower Dies When Blades Engage
Mower Blades Won’t Engage / PTO Not Working
Mower Deck Belt Keeps Coming Off
Mower Blades Slow Down in Heavy Grass
Mower Deck Pulley & Spindle Problems
Mower Cuts Uneven & Leaves Strips
Drive & Hydrostatic Problems
Mower Won’t Move & Hydrostatic Drive Problems
Zero-Turn Pulls to One Side & Weak Hydro
Hydrostatic Drive Weak When Hot
Zero-Turn One Side Won’t Move
Mower Drive Belt Keeps Coming Off
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