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SECTION 4 - TROUBLESHOOTING
ENGINE TROUBLESHOOTING
SYMPTOM PROBLEM SOLUTION
Engine....................Key OFF. .............................................................................................. Turn Key to Run.
does not.................Fuel Tank empty................................................................................... Fill Fuel Tank.
start........................Fuel Shut-Off Closed. ........................................................................... Open Fuel Shut-Off.
................................Engine Throttle Control not at FAST (Rabbit) position.......................... Put Engine Throttle Control to FAST
................................Choke NOT closed. .............................................................................. Put Throttle Control in CHOKE position.
Check choke adjustment.
................................Spark Plug Wire loose or disconnected................................................ Connect Spark Plug Wire.
................................Operator Presence Control (OPC) Switch out of adjustment................ Adjust Switch.
................................Blade Clutch Switch in ON position. ..................................................... Pull Blade Clutch Lever to OFF position.
................................Spark Plug bad. .................................................................................... Install new Spark Plug.
................................Dirty Air Filter........................................................................................ Clean Air Filter.
................................Transmission not in NEUTRAL............................................................. Shift Transmission Lever to NEUTRAL.
Engine....................Dirt or water Fuel Tank. ........................................................................ Drain and clean Fuel Tank. Fill with
Starts Hard fresh Fuel.
or Loses.................Vent in Gas Cap plugged...................................................................... Clean Vent or install new Gas Cap.
Power.....................Air Filter dirty. ....................................................................................... Clean or install new Air Filter.
................................Spark Plug not gapped correctly........................................................... Check and set Spark Plug gap.
................................Spark Plug bad. .................................................................................... Install new Spark Plug.
Engine ...................Spark Plug bad. .................................................................................... Install new Spark Plug.
Runs.......................Spark Plug not gapped correctly........................................................... Clean and set Spark Plug gap.
Erratically. .............Fuel Filter plugged or dirty. ................................................................... Replace Fuel Filte
r.
Engine ...................Dirty Air Filter........................................................................................ Clean or replace Filter.
Idles Poorly. ..........Fuel Filter plugged................................................................................ Replace Fuel Filter.
Engine ...................Engine Oil low in Crankcase................................................................. Add Oil.
Overheats. .............Engine Cooling Fins clogged ................................................................ Clean Engine Cooling Fins.
Machine ................Blade Mounting Bolts loose. ................................................................. Tighten Blade Mounting Bolts.
Vibrates .................Blade out of Balance. ........................................................................... Sharpen and balance Blade.
Excessive. .............Engine Mounting Bolts loose. ............................................................... Tighten Mounting Bolts.
................................Damaged or Severed Belt .................................................................... Replace Belt.
Engine....................Mowing grass too tall............................................................................ Adjust cutting height.
Dies.. ......................Mowing too fast. ................................................................................... Reduce travel speed.
MOWER TROUBLESHOOTING
SYMPTOM PROBLEM SOLUTION
Mower does.............. Transmission in neutral..................................................................... Select Gear.
not move................... Traction Control Rod adjustment. ..................................................... Adjust Rod.
when Traction .......... Engine to Transmission Belt Damaged or Broken............................. Replace Belt.
Levers released........ Idler Spring Damage or Broken......................................................... Replace Spring.
Mower does.............. Slipping or broken Traction Belt. ....................................................... Adjust or replace Belt.
not track ................... Tire pressure in both Traction Wheels .............................................. Adjust air pressure.
straight. .................... not the same.
Blades DO ................ Belt slipping or broken....................................................................... Replace or adjust Belt.
NOT engage. ............ Clutch does not engage .................................................................... Check Electrical Connections & Clutch
Mower ....................... Travel speed too fast. ....................................................................... Reduce ground speed.
mows ........................ Operator making mower turn corner too fast..................................... Reduce ground speed.
unevenly. .................. Rough terrain. ................................................................................... Change mowing pattern.
................................... Unequal number of Blade Spacers on
.......................................Cutter Shafts or Caster Wheels..................................................... Install equal number of Spacers.
................................... Low Or No Air Pressure in Tires ....................................................... Fill Tires with Correct Air Pressure.
................................... Dull Blades........................................................................................ Sharpen Blades or Install new Blades.