Echo MS-41BP Use and care manual - page 8
Difficulty actuating the pump lever and/or
Upper valve plate sticks
Clean or replace valve plate
pump handle moves itself back up.
Piston cylinder outlet passage clogged
Clean piston cylinder outlet passage
Little or no resistance during
Damaged/worn/dirty/upper and or lower valve plate
Clean or Replace Valve Plate
repeated pumping – no pressure.
Damaged /worn upper o-ring on piston
Replace O-ring
Piston Collar or piston cylinder assembly is worn
Replace Collar or Piston cylinder assembly
Too much resistance after just a few
Not enough air cushion in the pressure
Release pressure in pressure chamber
pumping strokes but pressure only lasts
chamber
Remove the hose & drain pressure
briefly.
chamber. Reconnect the hose.
Upper valve plate damaged/worn/dirty
Clean or replace upper valve plate
Upward pumping action is more difficult
Vent hole is clogged
Clear the vent hole in cap
and/or pump handle moves itself
Lower valve plate sticks
Clean or replace the valve plate
backdown.
Clogged filter
Clean in tank filter
Piston cylinder intake clogged
Clean piston cylinder intake
When the handle is pulled up it moves
Valve Plate sticking
Clean or replace valve plate
itself back down
Leaks at Piston Cylinder
Damaged/worn/Dirty Collar
Clean or Replace Piston Collar
Damaged Piston Cylinder
Replace Piston Cylinder
Damaged Piston
Replace Piston
Shut-off leaks
Connections loose
Tighten connection
Worn or damaged shut-off
Rebuild or replace the shut-off valve
Wand assembly leaks
Connections loose
Tighten connection
Damaged or worn o-ring/gasket
Replace o-ring/gasket
Nozzle assembly leaks
Connections loose
Tighten connection
Damaged or worn o-ring/gasket
Replace o-ring/gasket
Leak between pump assembly
Pump clamp loose
Tighten clamp
and tank
O-ring worn or damaged
Replace pressure chamber o-ring
Hose leaking at tank outlet
Hose clamp loose
Tighten clamp
Hose leaking at shut-off
Connection loose
Tighten retaining nut
Damaged or worn o-ring/gasket
Replace o-ring/gasket
STORING / MAINTAINING YOUR SPRAYER
• The sprayer should be stored out of direct sunlight in a cool dry space.
• Before freezing weather make sure to drain all liquid in the tank, pump, pressure cylinder, hose,
shut-off valve, wand and nozzle, to avoid liquid expansion and cracking in the sprayer components
(See “Cleaning” section). Lock the shut-off valve in the “open” position.
• When service is required call your nearest dealer and always insist on original manufactured
replacement parts.
• Inspect the hose, wand, pump, tank and shut-off valve for wear, damage or leaks on a regular basis
and repair defects promptly.
TROUBLE SHOOTING YOUR SPRAYER
Symptom
Possible Reason
Correction
7E