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Check fuel line and carburetor. Low oil Add oil to proper level. Engine ON/OFF switch in OFF position Turn switch to ON position. Water in fuel or old fuel Drain fuel tank and carburetor. Use new fuel and make sure spark plug is dry. Engine flooded or improperly choked Open choke. Pull engine starter rope several times to clear out fuel. Make sure spark plug is dry. Dirty air cleaner filter Remove and clean filter. Spark plug dirty, wrong gap or wrong type Clean, adjust gap or replace spark plug. Gun not triggered Trigger gun while starting engine. 6.5 hp Briggs and Stratton model may experience “vapor lock” due to gas type and temperature Allow unit to cool approximately 15 minutes and restart. Engine misses or lacks power Partially plugged air cleaner filter Remove and clean. Valve adjustment (lash) worn Adjust valve (lash) to manufacturer’s specifications. Spark plug dirty, wrong gap or wrong type Clean, adjust gap or replace spark plug. Pressure is too low and/or pump runs roughly Worn or wrong size tip Replace with tip of proper size. Inlet filter clogged Clean. Check more frequently. Worn packings, abrasives in water or natural wear Check filter. Replace packing. Inadequate water supply Check water flow rate to pump. Fouled or dirty inlet or discharge valves Clean inlet and discharge valve assemblies. Check filter. Restricted inlet Garden hose might be collapsed or kinked. Check hose and straighten to remove kinks. Worn inlet or discharge valves Replace worn valves. Leaking high-pressure hose Replace high-pressure hose. Water leaks from under pump manifold Worn packings Install new packings. Water on oil side of pump Humid air condensing inside crankcase Change oil as specified in Maintenance Chart, page 11. Worn packings Install new packings. Oil seals leaking Install new oil seals. 12 309286K Troubleshooting Problem Cause Solution Packings are failing frequently or pre-Scored, damaged, or worn plungers Install new plungers. maturely Abrasive material in fluid being pumped Install proper filtration on pump inlet plumbing. Inlet water temperature too high Check water temperatures. It should not exceed 160°F (70°C). 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 inlet and low pressure on discharge side Foreign particles in inlet or discharge valve or worn inlet and/or discharge valves Clean or replace valves. 309286K 13 Pump Service: 2730B/2730H Model Pressure Washers Pump Service: 2730B/2730H Model Pressure Washers Repair kits are available. See the Parts List, page 18 (2730B) or page 20 (2830H). For the best results, use all parts in kits. • The following metric wrenches are needed: 5mm, 13mm, and 22mm. • Drain and refill pump after 50 hours of operation. Follow Pressure Relief Procedure, page 6. Valves For a set of six valves, order Valve Assembly Kit 804402. 1. Remove hex plug from the manifold using a 22mm wrench. 2. Examine o-ring located under hex plug. Replace if cut or distorted. 3. Remove valve assembly from cavity. The assembly may come apart! 4. Install new valve, o-ring and hex plug. Torque to 33 ft-lb (45 N.m). Retorque the plug after 5 hours operation. Pumping Section 1. Remove capscrews and lock washers from manifold using a 5mm wrench. 2. Carefully separate manifold from the crankcase. You may have to lightly tap the manifold with a soft mallet to loosen it. CAUTION To avoid damage to plunger or seals, keep manifold properly aligned with the ceramic plungers when you remove it. 3. Carefully examine each plunger for any scoring or cracking. Replace as necessary. Servicing Plungers 1. Loosen plunger retaining nut five or six turns using a 13mm wrench. Push plunger toward the crankcase to separate plunger and retaining screw. 2. Remove nut from plunger and examine and clean o-ring, backup ring, and copper bearing/gasket washer. 3. Remove plunger and flinger from plunger shaft. Clean parts as necessary. 4. Inspect plunger shaft for oil leaks from crankcase. If leaking is obvious, replace oil seals. Otherwise, DO NOT remove these seals because they cannot be reused. Oil Seal Kits are available for replacing seals. 5. Lightly grease the flinger (and oil seal if it is being replaced) on plunger shaft. Then install plunger. 6. Lightly grease the retaining screw and outer end of the plunger. Place washer, o-ring and backup ring around screw and install nut through plunger. Torque to 11 ft-lb (15 N.m). If replacing packings, see Servicing V-Packings, page 15. 7. Lubricate outside of each plunger. Slide the manifold on the crankcase, being careful not to damage seals. 8. Install capscrews and washers finger tight. Torque screws to 8.8 ft-lb (12 N.m) following the tightening pattern in the following figure. 51 47 83 2 6 ti5443a 14 309286K Uneven tightening could cause the manifold to bind or jam. Servicing V-Packings 1. Remove manifold as described in Pumping Section, page 14. 2. Careful...

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