Product Manual

Troubleshooting
32
WARNING
Before troubleshooting or attempting to service, read the following safety rules to
avoid accidental exposure to chemical and risk of electric shock.
Note: A reserve, clean container capable of holding at least 55 gallons should be kept for use when the
sprayer tank needs to be emptied temporarily for repairs. It is advisable to purchase a reserve tank
suitable for chemical storage from Northern Tool and Equipment for use in these circumstances. The
container should be properly labeled as to its contents if it is used.
Before attempting to service the sprayer:
1. Personal
protective
equipment
Wear personal protective equipment as directed on the chemical label while
servicing your sprayer.
2. Review
troubleshooting
table
Review the Troubleshooting Table below for the type of problem you are
experiencing. However, DO NOT attempt to repair until the steps listed below
are followed.
3. Empty and flush
If the cause listed for your problem is Clogged intake tube, Clogged suction
strainer, or Worn spray gun nozzle: empty the tank and flush the sprayer with
water as directed in the section, “Operation – Step Four”.
- In order to avoid accidental exposure to chemicals, never attempt to unclog
the intake tube or suction strainer, or service the spray gun nozzle, until the
tank has been emptied and the sprayer flushed with water.
4. Disconnect
power/relieve
pressure
Stop the engine and be sure all system pressure is relieved by operating the
spray gun. Unplug spark plug wire.
5. Perform repairs
Follow the directions provided in the troubleshooting table to repair the
sprayer.
NOTE: Never try to unclog the sprayer nozzle by blowing through it.
6. Test after
servicing
After servicing, ALWAYS test the sprayer for leaks with plain water before
using.
PROBLEM
CAUSE
SOLUTION
Engine will not start
Engine will not start
See engine owner’s manual
Low pressure
Agitation not tuned properly
Tune agitator with desired agitator tip
Pressure regulator not adjusted
Adjust pressure regulator
Worn spray gun nozzle
Replace spray gun nozzle
Leak in the system
Tighten leaking fitting/hose
Low flow
Agitation valve is open
Close agitation valve
Agitation not tuned properly
Tune agitator with desired agitator tip
Strainer clogged
Remove strainer and clean
Clogged suction line
Remove obstruction
Poor spray distribution
Worn spray gun nozzle
Replace spray gun nozzle
Output drops and the
pump is noisy
Pump failure
See pump owner’s manual