TROUBLESHOOTING CHART

WARNING

To reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on the skin or injury from moving parts, always follow the Pressure Relief Procedure Warning before proceeding.

Problem

Cause

Solution

 

 

 

Engine will not start or

No gasoline in fuel tank or carburetor.

Fill the tank with gasoline, open fuel shut off valve.

is hard to start

 

Check fuel line and carburetor.

 

Low oil level.

Add to proper level.

 

Start/Stop switch in Stop position.

Move switch to start position.

 

Water in gasoline or old fuel.

Drain fuel tank and carburetor. Use new fuel and

 

 

dry spark plug.

 

Loose or wrong battery connection.

Check and tighten battery connections.

 

Battery not properly charged.

Check electrolyte level of cells, recharge battery.

 

Choked improperly. Flooded engine.

Open choke and crank engine several times to

 

 

clear out gas.

 

Dirty air cleaner filter.

Remove and clean.

 

Spark plug dirty, wrong gap or wrong type.

Clean, adjust the gap or replace.

 

Spray gun closed.

Trigger spray gun.

 

 

 

Engine misses or

Partially plugged air cleaner filter.

Remove and clean.

lacks power

Spark plug dirty, wrong gap or wrong type.

Clean, adjust the gap or replace.

 

 

Incorrect ignition timing.

Time engine.

 

 

 

Low pressure and/or

Worn or wrong size tip.

Replace with tip of proper size.

pump runs rough

Inlet filter clogged.

Clean. Check more frequently.

 

 

Worn packings, abrasives in water or natural

Check filter. Replace packings. See PUMP

 

wear.

SERVICE.

 

Inadequate water supply.

Check water flow rate to pump.

 

Belt slippage.

Tighten or replace; use correct belts and replace

 

 

both at same time.

 

Fouled or dirty inlet or discharge valves. Even

Clean inlet and discharge valve assemblies. Check

 

a small particle can cause the valve to stick.

filter.

 

Restricted inlet.

Check garden hose, may be collapsed or kinked.

 

Worn inlet or discharge valves.

Replace worn valves.

 

Leaking high pressure hose.

Replace high pressure hose.

 

 

 

Water leakage from

Worn packings.

Install new packings. See PUMP SERVICE.

under pump manifold

 

 

 

 

 

Water in pump

Humid air condensing inside crankcase.

Change oil as specified in MAINTENANCE.

 

Worn packings.

Install new packings. See PUMP SERVICE.

 

Oil seals leaking.

Install new oil seals. See PUMP SERVICE.

 

 

 

Frequent or

Scored, damaged or worn plungers.

Install new plungers. See PUMP SERVICE.

premature failure of

Abrasive material in the fluid being pumped.

Install proper filtration on pump inlet plumbing.

the packings

Inlet water temperature too high.

Check water temperature; may not exceed 160_F.

 

 

Overpressurizing pump.

Do not modify any factory±set adjustments. See

 

 

EQUIPMENT MISUSE HAZARD.

 

Excessive pressure due to partially plugged or

Clean or replace tip. See Installing and Changing

 

damaged tip.

Spray Tips.

 

Pump running too long without spraying.

Never run pump more than 10 minutes without

 

 

spraying.

 

Running pump dry.

Do not run pump without water.

 

 

 

Strong surging at the

Foreign particles in the inlet or discharge

Clean or replace valves. See PUMP SERVICE.

inlet and low pressure

valve or worn inlet and/or discharge valves.

 

on the discharge side

 

 

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Graco Inc 800-635, 308-525, 800-636, 800-637, 800-681, 3540, 3050 manual Troubleshooting Chart, Problem Cause Solution
Page 8 Page 10

3540, 800-637, 308-525, 800-635, 3050 specifications

Graco Inc. is a leading manufacturer of fluid handling equipment, primarily focused on innovative spray technology and equipment for various industrial applications. Among their extensive product lineup, Graco offers several models, including the 800-636, 800-681, 3050, 800-635, and 308-525, each designed to meet specific needs in the painting and coating industry.

The Graco 800-636 is known for its portability and versatility. This airless paint sprayer is designed for both small and medium-sized jobs. It features a robust pump that delivers consistent pressure, ensuring a smooth and even spray finish. One of its main technologies includes the ProControl feature, which allows users to adjust the pressure settings for optimal control when spraying different materials.

The 800-681 model takes efficiency to another level with its advanced fluid delivery system. This model is suitable for larger projects, as it is capable of handling a diverse range of coatings, including high-viscosity materials. With its SmartControl technology, the device provides users with the ability to monitor and manage spray patterns effectively, minimizing overspray and maximizing coverage.

Next in line is the Graco 3050, characterized by its heavy-duty construction designed for rugged environments. This model is particularly suited for industrial applications where reliability is critical. It features Graco's exclusive Endurance pump, ensuring longer lifespan and reduced maintenance. The 3050 also incorporates an ergonomic design, making it easier for operators to handle during extended usage.

The Graco 800-635 is another excellent option for professionals seeking a reliable solution for their painting needs. This model is equipped with a lightweight frame, making it easy to transport. It is designed with a focus on user-friendliness, featuring a one-touch setup and easy-to-use controls. Additionally, it includes a high-efficiency airless spray tip that enhances performance, especially when working with thicker materials.

Lastly, the 308-525 model stands out for its precision and durability. Known for its ability to deliver fine finishes, this sprayer is ideal for detailed work. The 308-525 integrates advanced filter technology that minimizes blockages, allowing for uninterrupted spraying. It is designed to work seamlessly with Graco's range of accessories, further expanding its versatility.

In summary, Graco Inc.'s 800-636, 800-681, 3050, 800-635, and 308-525 models boast a variety of features that cater to different applications in the painting and coating industry. With advanced technologies that enhance efficiency, control, and durability, Graco continues to be a trusted name for professionals looking for high-quality fluid handling equipment.
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