ToughTek: M680a

Sprayer does not operate. Displacement pump operates, but output is low on upstroke. Displacement pump operates, but output is low on down stroke. Displacement pump operates, but output is low on both strokes. Erratic accelerated speed. Cycles or fails to hold pressure at stall. Poor finish or irregular spray pattern. Motor powered but nothing comes out of hose. Material is too thick to push through the hose without packing out. Cannot open or close air motor pilot ball valve on applicator. Cannot open or close fluid ball valve on hose at applicator.