User's Manual

Troubleshooting
3A2593B Repair 39
Troubleshooting
General
Problem Cause Solution
Engine pulls hard
Excessive hydraulic load. Main power switch
is on.
Turn main power switch OFF.
Engine will not start
Engine is out of gas. Refill gas tank. See engine manual.
Fuel shut-off lever is OFF. Move fuel shut-off lever to ON position.
Engine switch is OFF. Turn engine switch ON.
Engine oil level is low.
Check oil level and add oil if necessary. See engine
manual.
Engine is cold. Use engine choke.
Spark plug cable is disconnected or damaged. Connect spark plug cable or replace spark plug cable.
Main power switch is stuck in engine stop
position.
Replace main power switch.
Oil is seeping into combustion chamber.
Remove spark plug. Pull starter 2 to 4 times. Clean or
replace spark plug. Start engine. Keep sprayer upright
to avoid oil seepage.
High engine speed at no load
Improperly adjusted high speed setting. Reset high speed to 3600 - 3700 engine rpm at no load.
Worn engine governor. Adjust or replace engine governor.
Machine will not drive
Main power switch is not turned ON. Turn main power switch ON.
Hydrostatic drive is not engaged. Close wheel motor bypass valve to engage drive.
Drive cable is disconnected or broken. Reconnect or replace cable.
Clutch wire harness is disconnected or broken.
Reconnect or replace harness as
necessary.
Clutch does not work. Replace clutch.
Ground drive belt is worn or broken. Adjust or replace ground drive belt.
Ground Drive Pump is worn or not working. Replace ground drive pump.
Wheel motor(s) worn or not working. Replace wheel motor.
Engine operates, but
displacement pump does
not operate
Main power switch is OFF. Turn main power switch ON.
Pump valve is OFF. Turn pump valve ON.
Pressure setting is too low.
Turn pressure adjusting knob clockwise to increase
pressure. See operation manual.
Prime/drain valve is closed and system
is pressurized.
Open prime/drain valve.
Hydraulic fluid too low. Shut off sprayer. Add fluid*.
Oil reservoir belt is worn, broken, or off
the pulley.
Replace oil reservoir belt. See page 11.
Tip is clogged. Reverse tip to clean. See manual 311254.
Displacement pump piston rod is stuck due to
dried paint.
Repair pump. See manual 309277.
Hydraulic motor not shifting.
Set pump valve OFF. Turn pressure down. Turn engine
OFF. Pry rod up or down until hydraulic motor shifts.