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Briggs & Stratton Powersmart 30473, Service And Repair Manual

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BRIGGSandSTRATTON.COM

Briggs & Stratton Power Products Group, LLC

P.O. Box 702

Milwaukee, WI  53201-0702

Copyright © 2010. All rights reserved.  No part of this material 
may be reproduced or transmitted in any form without the express 
written permission of Briggs & Stratton Power Products Group, LLC.

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for 

Reproduction

Summary of Contents for Powersmart 30473

Page 1: ...R GENERATOR SERVICE AND REPAIR MANUAL MODEL 030473 279957GS Rev This generator is rated in accordance with CSA Canadian Standards Association standard C22 2 No 100 04 motors and generators N o t f o r...

Page 2: ...LC P O Box 702 Milwaukee WI 53201 0702 Copyright 2010 All rights reserved No part of this material may be reproduced or transmitted in any form without the express written permission of Briggs Stratto...

Page 3: ...nce 10 Generator Maintenance 10 Engine Maintenance 11 Rewind Starter Replacement 15 Troubleshooting 17 Fuel System 17 Stepper Motor 22 Engine Will Not Start 24 No AC Output 27 No DC Output 28 Generato...

Page 4: ...not avoided will result in death or serious injury WARNING indicates a hazard which if not avoided could result in death or serious injury CAUTION indicates a hazard which if not avoided could result...

Page 5: ...nside any building carport porch mobile equipment marine applications or enclosure DO NOT tip engine or equipment at angle which causes fuel to spill DO NOT stop engine by moving choke to CHOKE positi...

Page 6: ...equipment Never work on the equipment when you are physically or mentally fatigued DO NOT start engine with air cleaner or air cleaner cover removed DO NOT insert any objects through cooling slots DO...

Page 7: ...l stabilizer when adding fuel All fuel is not the same If you experience starting or performance problems after using fuel switch to a different fuel provider or change brands This engine is certified...

Page 8: ...F position to reduce the possibility of fuel leakage Allow the engine to cool before turning the vent lever to the OFF position Grounding Fastener The generator neutral is floating which means that th...

Page 9: ...ing requirements in your area K 120 Volt AC 20 Amp Duplex Receptacle May be used to supply electrical power for the operation of 120 Volt AC 20 Amp single phase 60 Hz electrical lighting appliance too...

Page 10: ...nerator maintenance consists of keeping the unit clean and dry Operate and store the unit in a clean and dry environment where it will not be exposed to excessive dust dirt moisture or any corrosive v...

Page 11: ...he chart to select the best viscosity for the outdoor temperature range expected Checking Oil Level Adding Oil Oil level should be checked prior to each use or at least every 8 hours of operation Keep...

Page 12: ...oz into oil fill opening to the point of overflowing at oil fill cap DO NOT overfill Figure 6 Figure 6 6 Reinstall oil fill cap Finger tighten cap securely 7 Wipe up any spilled oil 8 Reinstall the si...

Page 13: ...other signs of damage 5 Check electrode gap with wire feeler gauge A Figure 10 and reset the spark plug gap to recommended gap if necessary Figure 10 6 Replace spark plug if electrodes are pitted bur...

Page 14: ...similar laws Contact the original equipment manufacturer retailer or dealer to obtain a spark arrester designed for the exhaust system installed on this engine Replacement parts must be the same and i...

Page 15: ...re lined up Securely clamp the pulley and housing together to prevent the pulley from spinning 5 Pull the rope knot out of the pulley Untie the knot and then slip rope out of the rewind starter Remove...

Page 16: ...install shoulder screw Torque screw to 30 in lb 3 Nm 3 While holding retainer rotate the pulley to extend and retract the pawls If they do not move properly remove and reinstall the retainer plate 4...

Page 17: ...m hose is connected properly Restrictions or leaks in vacuum or fuel hoses Cracks or distortion in pump body or base Fuel Tank The fuel tank is metal A Figure 17 and is not repairable Inspect tank for...

Page 18: ...at head screwdriver pry off cover to the fuel valve knob Figure 19 Figure 19 2 Remove screw under the cover to remove the knob B Figure 20 3 Check the fuel valve for leaks C Figure 21 If the fuel valv...

Page 19: ...aside Figure 24 5 Locate fuel valve F Figure 25 inside of the generator enclosure 6 Remove hoses G and loosen screw H to remove the fuel valve 7 Install a new fuel valve using the above steps in rever...

Page 20: ...r for Blockage Leaks Varnish or Gummy Residue If carburetor is suspected to have a fuel leak or blockage follow these steps 1 Loosen the two self locking screws and remove the side maintenance cover F...

Page 21: ...slide carburetor assembly off engine 9 Remove bowl nut Figure 33 and the fuel bowl Check for damage leaks and gummy residue Figure 32 Figure 33 Figure 31 D 6 Inspect carburetor overload hose D Figure...

Page 22: ...air to dry Passages in the main jet Inside and outside of the fuel bowl Float If any passages remain plugged after cleaning replace the entire carburetor assembly 14 Inspect openings in the carbureto...

Page 23: ...locate the connector A Figure 38 2 Measure the resistance across wires B Figure 39 3 Measure the resistance across wires C Figure 39 4 Resistance should measure between 45 55 5 If the resistance measu...

Page 24: ...lly move the lever This should free the linkages If not replace the carburetor Figure 42 2 Remove two screws that hold the stepper motor to the carburetor assembly F Figure 41 3 Locate the throttle le...

Page 25: ...ee LED lights Figure 46 Figure 43 A Figure 45 A Spark Plug See Engine Maintenance 3 Turn the microswitch on and test between the terminal A Figure 45 and ground 4 If there is no continuity at the 10 p...

Page 26: ...the generator If level is acceptable proceed to Step 2 2 It is possible that the oil indicator float is stuck Gently rock the generator in a side to side motion to free the float 3 If oil level is cor...

Page 27: ...connect the 10 pin connector Figure 50 3 Check continuity between ground and the ignition winding A Figure 51 Figure 51 A If continuity is measured the winding is good If continuity is not measured ch...

Page 28: ...sistance is measured the coil is good If resistance is not to specifications check wire connections and retest If resisitance is still not to specifications replace coil If resistance is still not to...

Page 29: ...the ignition module is faulty Replace the ignition module No AC Output 1 Check the output indicator A Figure 60 If the green LED is illuminated check the plug connection and check for loose wires 2 Ch...

Page 30: ...retest If resistance is still not to specifications proceed to Step 5 If resistance is 0 15 0 30 the windings are good If resistance is not to specifications check wire connections or repair replace w...

Page 31: ...e 66 A A If resistance is 0 3 0 7 the winding is good If resistance is not to specification check wire connections or repair repace wires then retest If resistance is still not to specification replac...

Page 32: ...in 08 13 mm cold Exhaust Valve Clearance 005 007 in 13 18 mm cold Fuel Capacity 1 0 U S gallon 3 7 L Oil Capacity 13 5 Ounces 0 4 L This generator is rated in accordance with CSA Canadian Standards A...

Page 33: ...33 Generator Wiring Diagram N o t f o r R e p r o d u c t i o n...

Page 34: ...N o t f o r R e p r o d u c t i o n...

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