Graco Hydra-clean 1535 User Manual (English)

Questions and Answers:

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echaseAug 19, 2025
Why won't my Graco Hydra-clean 1535 engine start?
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  Michael FloresAug 19, 2025
  If your Graco Pressure Washer engine won't start, several factors could be at play. First, ensure the fuel tank has gasoline and the fuel shut-off valve is open. For units equipped with a low oil sensor, verify and add oil to the correct level. Check that the Start/Stop switch is in the Start position. Also, water or old fuel in the gasoline can prevent starting, so drain the fuel tank and carburetor. If the engine is flooded, also drain the fuel tank and carburetor. Other potential issues include an improperly choked engine (open the choke and crank the engine), a dirty air cleaner filter (remove and clean it), a dirty or incorrectly gapped spark plug (clean, adjust, or replace it), or a closed spray gun (trigger the spray gun).
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James JonesAug 21, 2025
What to do if Graco Pressure Washer has low pressure and/or pump runs rough?
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  Terri EricksonAug 21, 2025
  To address low pressure or rough pump operation in your Graco Pressure Washer, begin by inspecting the tip for wear or incorrect sizing and replace if necessary. Clean the inlet filter to ensure it's free of clogs. Inspect the water supply and ensure adequate flow to the pump. Other possible solutions include replacing worn packings, tightening or replacing the belt (use correct belts and replace both at the same time), cleaning fouled or dirty inlet or discharge valves, checking the filter for a restricted inlet, replacing worn inlet or discharge valves, or replacing a leaking high-pressure hose.
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Sara RobertsAug 23, 2025
How to fix Graco Hydra-clean 1535 Pressure Washer engine that misses or lacks power?
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  Ryan WardAug 23, 2025
  If your Graco Pressure Washer engine is missing or lacking power, start by removing and cleaning the air cleaner filter if it's partially plugged. Also, check the spark plug; if it's dirty, has the wrong gap, or is the wrong type, clean it, adjust the gap, or replace it.
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rcolemanAug 26, 2025
What causes frequent failure of packings in Graco Pressure Washer?
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  Karen KennedyAug 26, 2025
  Frequent or premature failure of the packings in your Graco Pressure Washer can be due to several reasons. You may need to install new plungers if the existing ones are scored, damaged, or worn. Ensure proper filtration is installed on the pump inlet plumbing to prevent abrasive material in the fluid being pumped. Check that the inlet water temperature does not exceed 160 F. Avoid modifying any factory-set adjustments to prevent over-pressurizing the pump. Clean or replace the tip if it's partially plugged or damaged, causing excessive pressure. Never run the pump for more than 10 minutes without spraying, and ensure the pump never runs without water.
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Alex NavarroAug 27, 2025
What to do if Graco Pressure Washer has water leakage from under pump manifold?
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  Daniel DuranAug 27, 2025
  If you notice water leaking from under the pump manifold of your Graco Pressure Washer, it is likely due to worn packings. Install new packings to resolve this issue.
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Rodney SmithAug 29, 2025
Why is there surging at the inlet and low pressure on the discharge side of my Graco Pressure Washer?
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  Hector BarnettAug 29, 2025
  If there's strong surging at the inlet and low pressure on the discharge side of your Graco Pressure Washer, it could be due to foreign particles or worn valves. Clean or replace the inlet or discharge valves to resolve this issue.
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Angela HillAug 31, 2025
Why is there water in my Graco Pressure Washer pump?
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  cjohnsonSep 1, 2025
  If you find water in the pump of your Graco Pressure Washer, it could be due to humid air condensing inside the crankcase, worn packings, or leaking oil seals. Change the oil as specified in the maintenance section. Install new packings and new oil seals to address these issues.
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Shannon RobinsonSep 3, 2025
How to fix a Graco Hydra-clean 1535 that won't start?
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  Matthew KingSep 3, 2025
  If your Graco Pressure Washer engine won't start, several factors could be the cause. First, ensure the fuel tank has gasoline and the fuel shut-off valve is open. Next, check the oil level and add oil if it's low. Make sure the start/stop switch is in the start position. Also, water or old fuel can prevent starting, so drain the tank and carburetor and use new fuel, drying the spark plug. If the engine is flooded, use a dry spark plug. A dirty air filter can also be the culprit, so remove and clean it. Finally, a dirty or incorrectly gapped spark plug can cause issues, so clean, adjust, or replace it as needed. Trigger the spray gun while spraying to ensure it is open.
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martinknoxSep 5, 2025
Why does my Graco Pressure Washer have low pressure and run rough?
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  Cindy StewartSep 5, 2025
  Low pressure and rough pump operation in your Graco Pressure Washer can stem from several issues. Start by checking the tip; a worn or incorrect size tip should be replaced with the correct size. Next, inspect the inlet filter for clogs and clean it if necessary. Worn packings can also cause this issue, so replace them. Ensure you have an adequate water supply by checking the water flow rate to the pump. Lastly, inspect and clean the inlet and discharge valves, check the filter for restrictions, and replace any worn valves. If the high pressure hose is leaking, replace it.
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joyoungSep 7, 2025
What to do if my Graco Pressure Washer engine misses or lacks power?
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  Heather SantosSep 7, 2025
  If your Graco Pressure Washer engine misses or lacks power, start by checking the air cleaner filter for partial blockages and clean it if needed. Also, inspect the spark plug; if it's dirty, has the wrong gap, or is the wrong type, clean it, adjust the gap, or replace it.