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WEN POWER 56173, Owner'S Manual, Page: 25 / 28

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WEN POWER 56173 Owner'S Manual Download Page 25

Part # 

Stock # 

Description 

Part #

Stock # 

Description 

1 

56173-001 

CYLINDER HEAD COVER 

51 

56173-051 

VALVE LOCK NUT 

2 56173-002 

CYLINDER HEAD COVER 
GASKET 

52 

56173-052 

VALVE ADJUSTING NUT 

3 56173-003 

CYLINDER 

HEAD 

53 56173-053 

VALVE SPRING SEAT 

4 

56173-004 

CYLINDER HEAD GASKET 

54 

56173-054 

ROCKER, VALVE 

5  56173-005 BOLT 

55  56173-055 SPRING, 

VALVE 

6  56173-006 SPARK 

PLUG 

56  56173-056 GUIDE, 

SEAL 

7 

56173-007 

CYLINDER HEAD BOLT 

57 

56173-057 

BOLT, VALVE ADJUSTING 

8  56173-008 MUFFLER 

BRACKET 

58  56173-058 VALVE, 

INTAKE 

9  56173-009 BOLT 

59  56173-059 LIFTER 

STOPPER 

PLATE 

10 56173-010 STUD 

60 56173-060 VALVE 

LIFTER 

11 56173-011 PIN 

61 56173-061 VALVE 

TAPPET 

12 56173-012 CRANKCASE 

ASSEMBLY 

62 56173-062 CAMSHAFT 

ASSEMBLY 

13 

56173-013 

CRANKCASE SIDE SHIELD 

63 

56173-063 

EXHAUST VALVE 

14 56173-014 OIL 

DIPSTICK 

64 56173-064 BOLT 

15 56173-015 BOLT 

65 56173-065 RECOIL 

STARTER 

ASSEMBLY 

16 56173-016 BOLT 

66 56173-066 CABLE 

COVER 

CLIP 

17 

56173-017 

TANK RIGHT BRACKET 

67 

56173-067 

ENGINE HOUSING 

18 56173-018 OIL 

SEAL 

68 56173-068 SHROUD 

19 56173-019 BOLT 

69 56173-069 NUT 

20 56173-020 BOLT 

70 56173-070 STUD 

21 56173-021 COVER 

PLATE 

71 56173-071 STUD 

22 

56173-022 

BREATH GROOVE GASKET 

72 

56173-072 

INSULATOR PLATE GASKET 

23 56173-023 BREATH 

PIECE 

73 56173-073 

CARBURETOR INSULATOR 
PLATE 

24 56173-024 STRAINER 

74 56173-074 CARBURETOR 

GASKET 

25 

56173-025 

SHIELD, CRANKCASE REAR

75 

56173-075 

CARBURETOR INSULATOR 
GASKET 

26 56173-026 BEARING 

76 56173-076 CARBURETOR 

ASSEMBLY 

27 

56173-027 

FUEL TANK LEFT BRACKET

77 

56173-077 

AIR CLEANER GASKET 

28 56173-028 BOLT 

78 56173-078 VALVE 

TUBE 

29 56173-029 GOVERNOR 

ARM 

79 56173-079 PRIMING 

BULB 

30 56173-030 WASHER 

80 56173-080 CLAMP 

31 

56173-031 

OIL SEAL 

81 

56173-081 

AIR CLEANER GASKET 

32 56173-032 PIN 

82 56173-082 BREATHER 

TUBE 

33 56173-033 CRANKCASE 

GASKET 

83 56173-083 NUT 

34 56173-034 PIN 

84 56173-084 AIR 

CLEANER 

35 56173-035 WASHER 

85 56173-085 EXHAUST 

OUTLET 

GASKET 

36 

56173-036 

RETURNING OIL BLOCK 

86 

56173-086 

MUFFLER ASSEMBLY 

37 56173-037 BOLT 

87 56173-087 BRAKE 

ASSEMBLY 

38 56173-038 GOVERNOR 

PLATE 

88 56173-088 BOLT 

39 56173-039 OIL 

SEAL 

89 56173-089 BOLT 

40 56173-040 BOLT 

90 56173-090 MUFFLER 

OUTER 

COVER 

41 56173-041 GEAR 

ASSEMBLY 

91 56173-091 BOLT 

42 56173-042 CRANKCASE 

COVER 

92 56173-092 FUEL 

TANK 

43 

56173-043 

THE FIRST RING 

93 

56173-093 

FUEL TUBE 

44 

56173-044 

THE SECOND RING 

94 

56173-094 

BOLT 

45 

56173-045 

OIL RING SET 

95 

56173-095 

TANK COVER CHAIN 

46 56173-046 PISTON 

96 56173-096 TANK 

COVER 

47 

56173-047 

PISTON PIN CLIP 

97 

56173-097 

FUEL STRAINER 

48 56173-048 PISTON 

PIN 

98 56173-098 CLAMP 

49 56173-049 CONNECTING 

ROD 

99 56173-099 CLAMP 

50 56173-050 CRANKSHAFT 

ASSEMBLY 100 

56173-100 

FLYWHEEL 

NUT 

 

 22 

Summary of Contents for 56173

Page 1: ...uestions Problems Please call our customer help line 800 232 1195 M F 8 5 CST FEATURES Low Oil Automatic Shutoff Circuit Breaker for Overload Protection 0 3 Gallon Fuel Tank Capacity Meets EPA Phase III Emission Standards and CARB Emission Standards 2012 www wenproducts com ...

Page 2: ...ow for the location of Serial Number Record engine information in the spaces provided below DATE OF PURCHASE ______________________________________________ PURCHASED FROM ______________________________________________ ITEM NUMBER ____________________________________________________ ENGINE SERIAL NUMBER _________________________________________ Serial Number SERVICE RECORD Record Service Dates Date...

Page 3: ... Oil 7 Step 2 Add Gasoline 8 STARTING THE ENGINE 9 SUBSEQUENT STARTING OF THE ENGINE 10 Step 1 Check the Oil 10 Step 2 Check the Fuel Level 11 STOPPING THE ENGINE 11 MAINTENANCE CARE 12 Cleaning the Engine 12 Checking the Oil 12 Changing Adding Oil 13 Air Cleaner Maintenance 13 Spark Plug Maintenance 13 Draining the Fuel Tank 14 STORAGE TRANSPORT PROCEDURES 15 SPECIFICATIONS 16 TROUBLESHOOTING 18 ...

Page 4: ...ial messages to bring attention to potential safety concerns engine damage as well as helpful operating and servicing information Please read all the information carefully to avoid injury and machine damage Questions Problems In order to answer questions and solve problems in the most efficient and speedy manner contact Customer Service at 800 232 1195 M F 8 5 CST NOTICE REGARDING EMISSIONS Engine...

Page 5: ...afety information about hazards that can result in personal injury A signal word DANGER WARNING or CAUTION is used with the alert symbol to indicate the likelihood and the potential severity of injury In addition a hazard symbol may be used to represent the type of hazard DANGER indicates a hazard which if not avoided will result in death or serious injury WARNING indicates a hazard which if not a...

Page 6: ...ry backup CO alarm in the home If you start to feel sick dizzy or weak after the engine has been running move to fresh air RIGHT AWAY See a doctor You may have carbon monoxide poisoning WARNING The exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm WARNING This engine may emit highly flammable and explosive gasolin...

Page 7: ...e it or shorten its life Use engine only for its intended purposes Operate only on dry level surfaces Turn engine switch to off position when the engine is not running IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions for WEN engine that should be followed during installation and maintenance of the engine Engines vibrate in normal use Have damaged it...

Page 8: ...ENGINE COMPONENTS Please familiarize yourself with the locations and functions of the various components and controls of your engine Dipstick Starter Handle Fuel Cap Muffler Air Cleaner 5 ...

Page 9: ...holes or make a mounting plate to align with the engine mounting holes Only a qualified technician should attempt these solutions 4 Use 3 8 diameter coarse threaded hardened stainless steel Bolts Lock Washers and Washers not included of appropriate length to secure the Engine to the mower Make sure the hardware does not contact moving parts 5 Insert the mower s brake cable sheath through the hole ...

Page 10: ...the American Petroleum Institute API service classifications SJ SL or SM Synthetic oils may be used Use the SAE viscosity grade of oil from the following chart that matches the starting temperature anticipated before the next oil changes Figure1 Engine oil recommendations To fill oil to the crankcase follow these steps 1 Make sure the engine is on a level surface Tilting the engine to assist in fi...

Page 11: ...ing turn fuel valve to off position and disconnect spark plug wire Use fresh within 30 days from purchase unleaded gasoline with a minimum 87 octane rating Do not use gasoline which contains Methanol Do not mix oil with gasoline To add gasoline follow these steps 1 Make sure the engine is on a level surface 2 Unscrew fuel cap and set aside NOTE the fuel cap may be tight and hard to unscrew 3 Slowl...

Page 12: ... these areas Using a fan or opening windows and doors does NOT supply enough fresh air ONLY use an engine outside and far away from windows doors and vents These openings can pull in engine exhaust Even if you use an engine correctly CO may leak into the home ALWAYS use a battery powered or battery backup CO alarm in the home If you start to feel sick dizzy or weak after the engine has been runnin...

Page 13: ...se After this period Change the engine oil Under normal operating conditions subsequent maintenance follows the schedule explained in the MAINTENANCE AND SERVICING section SUBSEQUENT STARTING OF THE ENGINE If this is not the first time using the engine user should take the following steps to prepare it for operation IMPORTANT At this point the user should be familiar with the procedures described ...

Page 14: ...n tank Do not overfill fuel tank Gasoline may expand during operation Do not fill to the top of the tank Allow for expansion Always check for spilled fuel before operating Clean up any spilled fuel before starting Empty fuel tank before storing or transporting the engine Before transporting turn fuel valve to off and disconnect spark plug wire IMPORTANT Use only UNLEADED gasoline with an octane ra...

Page 15: ...ommended maintenance schedule Cleaning the Engine Never clean the engine when it is running Never clean with a bucket of water or a hose Water can get inside the working parts of the engine and cause a short circuit or corrosion Always try to use the engine in a cool dry place If the engine becomes dirty clean the exterior with a damp cloth a soft brush vacuum or pressurized air Checking the Oil C...

Page 16: ...ever dispose of used motor oil in the trash or down a drain Please call your local recycling center or auto garage to arrange oil disposal Air Cleaner Maintenance Routine maintenance of the air cleaner helps maintain proper air flow to the carburetor Check that the air cleaner is free of excessive dirt 1 Remove the air cleaner cover and the air cleaner elements and check for dirt Clean or replace ...

Page 17: ...uel valve to the OFF position Move the engine in a well ventilated area away from ignition sources 2 Place a funnel leading to a proper gasoline container below the carburetor 3 Remove the drain bolt from the bottom of the carburetor bowl and allow the fuel to drain 4 Open the fuel valve After all fuel has drained reinstall the drain bolt Tighten securely 5 Store the emptied gasoline in a suitable...

Page 18: ... reduces the amount of air in the tank and helps reduce deterioration of fuel Run the engine for 2 3 minutes allowing stabilized fuel mixture to circulate through the carburetor When transporting or storing the engine for extended periods of time Drain the fuel tank see Draining the Fuel Tank in the Maintenance section Disconnect the spark plug cap from the spark plug Do not obstruct any ventilati...

Page 19: ... F or below Capacity 0 6 Quart Lubrication System Forced Splash Run Time 50 Load with full tank 40 minutes Sound Level at 22 feet 104 dB Bore x Stroke 70 mm x 45 mm Compression Ratio 8 5 1 Rotation viewed from PTO power takeoff the output shaft Counterclockwise Shaft Shaft 7 8 x 3 16 Keyway 3 16 4 76 mm End Tapped 3 8 24 UNF Spark Plug Type NGK BP 6ES Torch F6TC F7RTC Gap 0 7 0 8 mm Valve Clearanc...

Page 20: ...MOUNTING HOLE DIAGRAM 17 ...

Page 21: ...uretor not primed Pull on Starter Handle to prime Dirty fuel passageways Clean out passageways using fuel additive Heavy deposits may require further cleaning Carburetor needle stuck Fuel can be smelled in the air Gently tap side of carburetor float chamber with screwdriver handle Too much fuel in chamber This can be caused by the carburetor needle sticking Turn Choke to RUN position Remove spark ...

Page 22: ...an diagnose repair ignition system Engine misfires Spark plug cap loose Check wire connections Incorrect spark plug gap or damaged spark plug Re gap or replace spark plug Defective spark plug cap Replace spark plug cap Old or low quality gasoline Use only fresh 87 octane unleaded gasoline Incorrect compression Diagnose and repair compression Use Engine will not start COMPRESSION RELATED section En...

Page 23: ...rrect spark timing deposit buildup worn engine or other mechanical problems Have qualified technician diagnose and service engine Engine backfire s Impure or low quality gasoline Fill fuel tank with fresh 87 octane unleaded gasoline Engine too cold Use cold weather fuel and oil additives to prevent backfiring Intake valve stuck or overheated engine Have qualified technician diagnose and service en...

Page 24: ...EXPLODED VIEW AND PARTS LIST 21 ...

Page 25: ...PIECE 73 56173 073 CARBURETOR INSULATOR PLATE 24 56173 024 STRAINER 74 56173 074 CARBURETOR GASKET 25 56173 025 SHIELD CRANKCASE REAR 75 56173 075 CARBURETOR INSULATOR GASKET 26 56173 026 BEARING 76 56173 076 CARBURETOR ASSEMBLY 27 56173 027 FUEL TANK LEFT BRACKET 77 56173 077 AIR CLEANER GASKET 28 56173 028 BOLT 78 56173 078 VALVE TUBE 29 56173 029 GOVERNOR ARM 79 56173 079 PRIMING BULB 30 56173 ...

Page 26: ...103 IGNITION COIL 104 56173 104 GOVERNEOR ROD 105 56173 105 THROTTLE VALVE RETURNING SPRING 106 56173 106 THROTTLE CONTROL 107 56173 107 BOLT 108 56173 108 GOVEROR SUPPORT 109 56173 109 GOVERNOR SUPPORT BOLT 110 56173 110 NUT 111 56173 111 GOVERNOR SPRING 112 56173 112 CLIP 23 ...

Page 27: ...NOTES 24 ...

Page 28: ...Customer Service Number 800 232 1195 and you will be informed of the nearest authorized service center We will prearrange the repair with the center WARRANTY COVERAGE This warranty is conveyed to the original purchaser and is not transferable Engines contain parts that will wear out with usage and parts that need maintenance The warranty does not cover wear or maintenance parts Specifically the wa...

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