Troubleshooting - Gravely Pro-Stance 1934FX Owner's/Operator's Manual

WARNING: AVOID INJURY. Read and understand entire
Safety section before proceeding.
Using Troubleshooting Chart
If you are experiencing a problem that is not listed in this chart, see
your authorized dealer for service.
When you have checked all the possible causes listed and you are
still experiencing the problem, see your authorized dealer.
Engine
If
Poor Engine Performance
Engine Will Not Start Or Is
Hard To Start

TROUBLESHOOTING

Check
Fuel:
• 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.
• Park brake lever not in the
proper position.
• OPC switch not depressed.
Stand on platform or adjust
switch.
• Check that motion control
levers are in neutral and
neutral switches are correctly
adjusted.
• PTO engaged.
• Stale or improper fuel/fuel
level.
• Plugged fuel filter.
• Plugged air intake filter.
• Spark plug wires loose or
disconnected.
• Spark plugs not gapped
correctly.
• Blown fuse.
• Electrical problem – dead
battery.
• Choke adjusted incorrectly.
See your authorized dealer.
If
Engine Will Not Slow Idle
Engine Runs Rough or
Stalls
Engine Knocks
Engine Overheats
Engine Lacks Power
Engine Uses Too Much Oil
Engine Backfires Through
Muffler
GB - 35
Check
• Carburetion problems. See
your authorized dealer.
• Bent or kinked throttle cable.
• Bent governor control.
• Incorrect governor idle control.
• Plugged fuel filter.
• Plugged air intake system.
• Fuel cap vent dirty.
• Stale or improper fuel/fuel
level.
• Spark plugs not gapped
correctly.
• Replace spark plugs.
• Choke adjusted incorrectly.
See your authorized dealer.
• Engine oil level low.
• Reduce load. (Slower ground
speed.)
• Fuel is bad. Fill tank with fresh
fuel, correct octane.
• Idle speed too slow.
• Clean cooling fins.
• Low oil level.
• Do not operate at slow idle.
Operate at fast idle.
• Cooling air intake screen is
dirty.
• Plugged carburetor air intake
filter.
• Plugged air intake filter.
• Operating at too fast ground
speed for conditions.
• Reduce load.
• Plugged air intake system.
• Plugged fuel filter.
• Improper type of fuel. Drain
tank and fill with correct fuel.
• Clean cooling fins to help
prevent overheating.
• Replace spark plugs.
• Find and correct oil leaks.
• Incorrect engine oil.
• Plugged oil filter.
• Plugged air intake filter.
• Worn engine components.
• Throttle lever should be at low
idle for thirty seconds before
turning off machine.