John Deere L2048 - Manual (Page 56)

Troubleshooting - 52
TROUBLESHOOTING
Troubleshooting
Using Troubleshooting Chart
If you are experiencing a problem that is not listed in this
chart, see your John Deere distributor for service.
When you have checked all the possible causes listed and
you are still experiencing the problem, see your John Deere
distributor.
Engine
IF CHECK
Poor Engine Performance Dirt in fuel system or fuel is old. Replace fuel with fresh stabilized
fuel. Obtain fuel from another supplier before suspecting machine
problems. Suppliers blend fuels differently and changing suppliers
will generally solve any performance problems
Fuel blended with alcohol or ether may contribute to performance
problems by causing gum and varnish deposits, especially if fuel is
stored for several weeks or more. Obtain fresh fuel.
Engine Will Not Start Brake pedal not depressed.
PTO is engaged.
Spark plug wire is loose or disconnected.
Improper fuel.
Plugged fuel filter.
Defective safety switch.
Electrical problem - See Electrical Troubleshooting Section
Engine Is Hard To Start Carburetor is not adjusted properly or dirty.
Plugged fuel filter.
Faulty spark plug.
Stale or improper fuel.
Loose or corroded electrical connections.
Engine oil viscosity.
Engine Runs Unevenly Cooling fins plugged.
Loose electrical connections.
Choke or throttle cable sticking.
Fuel line or fuel filter plugged.
Stale or dirty fuel.
Improper fuel.
Air cleaner element plugged.
Engine Misses Under Load Faulty spark plug.
Stale or dirty fuel.
Plugged fuel filter.