FarmBoy
®
Agricultural Knapsack Sprayer (Power)
FB-KPS-204/804
: +91.80. 22178200
Page 12 of 36
Troubleshooting
Pump:
Trouble
Cause
Remedy
No Suction
Hose is Loose
Tighten the hose carefully
Suction hose is clogged with
chemicals.
Disassemble and clean the
hose.
Worn piston packing.
Replace with a new piston
Foreign object in valve parts.
Disassemble and clean the
valve.
Poor spray quality
Worn piston packing
Replace with a new piston
Flaw in cylinder inner surface
Replace with a new cylinder
Flaw in exhaust valve
Replace with a new valve
Worn pressure control valve
handle
Replace with a new handle
Foreign object in valve parts
Replace with a new
Worn nozzle hole.
Replace with a new nozzle.
Too many nozzle attached
Reduce number of nozzles or
replace with nozzle of smaller
holes.
When engine fails to start:
Trouble
Cause
Remedy
There is fuel, but
spark plugs fail
to ignite.
There is power
at the terminal.
Drawing too much fuel
Tuning the carburetor
Faulty spark plug gap.
Adjust the spark plug
gap
Faulty
spark
plug
insulation.
Replace the spark
plug
No power at
the terminal
Faulty TCI unit or broken
wire
Replace the ignition
coil.
A break or short in the
ignition coil.
There is fuel and
spark
plug
ignites
Compression
is good
Bad Mixture
Adjust the carburetor
Compression
is bad
Faulty packing
Tighten
the spark
plug
Spark plugs not tightened
properly
Tighten
the spark
plug
Piston rings are sticking
Replace the piston
ring
No fuel in the
carburetor
No fuel in the tank
Fill the tank with fuel
Fuel valve is faulty or fuel
tank air vent is plugged.
Clear air vent hole
Lines are bent
Replace lines
