If you have a pump running unusually rough then check the coupler to the electric clutch and if everything's OK you can take the valve cover off and push on the stem if liquid comes out the diaphram is ruptured .
The diaphram takes air 15 psi roughly or 1/3 the pump pressure . You should check before using your sprayer along with the tires . Check psi and only takes a very quick shot of air . The repair is very simple just remove all the nuts and bolts and pull the diaphram out and replace it with a new one .
Pick of the diaphram
The dark blue area in center of pick is a hole .Without the counter air pressure to off set the pump operation it will run noticeably rougher and should be taken to the mechanic right away . The extra vibration will wear out hoses against the frame really quick.
Bob I have two of these 1250 sprayers. One of them is very slow to build pump pressure. I just had the pump rebuilt and it still doing the same thing. When you turn the pump on full rpm, it fluctuates for about 20 seconds before it holds pressure. Any ideas or thoughts?
ReplyDeleteFirst thing I would check is the O ring on tank screen . Sorry for delay . Blogger changed how comments are transmitted . I have to check for them now .
ReplyDeleteBob I have 2 toro 1250s. Both have fluctuating pressure on the gauge. And pulsating pressure at the nozzle. Any idea?
ReplyDeletecheck diaphragm ,then hose connection suction side with soapy water .and then the valves on pump head . sometime the get stuck open from a foreign object
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