Quick pressure loss

Service202 - quick pressure loss

Symptoms:

Despite pumping the pressure after some time is not high enough to spray properly and the motion of the piston while pumping seem to be resistless.

Reasons:

Probably the pump valve (8) or piston o-ring 11 x 4 mm (2) is broken.

Solution:

Examine the pump valve (8). It should adhere tightly to the to the surface of pump cylinder (7). If it does not the pump valve should be replaced.

The 11 x 4 o-ring (2) should be examined too. In order to do so, turn the pump cylinder (7) counterclockwise and pull out the pump piston (1) from the cylinder. If any damages are found the o-ring should be replaced.

While mounting the sprayer back together you musn` t forget about smearing the o-ring 11 x 4 (2) and the inside part of pump cylinder (7) with silicone smear.

Concern series:

Master 1500, 2000