Briggs & Stratton 110000 Service, Troubleshooting, And Repair Manual
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Briggs & Stratton 110000 Service, Troubleshooting, And Repair Manual

Professional series
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See also: Operation & Maintenance Manual , Operator's Manual
Repair Manuals for other
Briggs & Stratton Engines:
277527 Single Cylinder DOV
Air-Cooled Engines
®
273521 Twin Cylinder OHV Air-Cooled Engines
276781 Single Cylinder OHV Air-Cooled Engines
271172 Twin Cylinder "L" Head Air-Cooled Engines
270962 Single Cylinder "L" Head Air-Cooled Engines
276535 Two-Cycle Snow Engines
CE8069 Out of Production Engines (1919-1981)
Quality Starts With A
Master Service Technician
www.thePowerPortal.com (Dealers)
bRiGGsandstRattoN.coM (consumers)
BRIGGS&STRATTON
coRPoRatioN
Part No. 279000 - 3/11
Post office box 702
Milwaukee, wi 53201 usa
©2011 Briggs & Stratton Corporation
110000/120000 Professional Series
Service, Troubleshooting, and Repair Manual
Single Cylinder Engines
™

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Summary of Contents for Briggs & Stratton 110000

  • Page 1 273521 Twin Cylinder OHV Air-Cooled Engines 276781 Single Cylinder OHV Air-Cooled Engines 271172 Twin Cylinder “L” Head Air-Cooled Engines 270962 Single Cylinder “L” Head Air-Cooled Engines 110000/120000 Professional Series ™ 276535 Two-Cycle Snow Engines CE8069 Out of Production Engines (1919-1981)
  • Page 2 FORWARD This manual was written to assist engine technicians and service personnel with the repair and maintenance procedures for Briggs & Stratton® engines. It assumes that persons using this manual have been properly trained in and are familiar with the servicing procedures for these products, including the proper use of required tools and safety equipment and the application of appropriate safety practices.
  • Page 3  ...
  • Page 4 This engine repair manual includes the following engine models: • MODEL 110000 • MODEL 120000...
  • Page 5  ...
  • Page 6 SECTION 1 - Safety, Maintenance and Adjustments SECTION 2 - Troubleshooting SECTION 3 - Exhaust Systems SECTION 4 - Fuel Systems and Carburetion SECTION 5 - Governor Systems SECTION 6 - Cylinder Heads and Valves SECTION 7 - Starters SECTION 8 - Lubrication Systems SECTION 9 - Cylinders, Covers and Sumps SECTION 10 - Crankshafts, Camshafts, Balancing Systems and Gear Reductions SECTION 11 - Pistons, Rings and Connecting Rods...
  • Page 7  ...

  • Page 8: Table Of Contents

    SECTION 1 - SAFETY, MAINTENANCE AND ADJUSTMENTS SAFETY INFORMATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4 ENGINE MAINTENANCE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 FUEL AND OIL RECOMMENDATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 MAINTENANCE CHART - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7...

  • Page 9: Safety Information

    SAFETY INFORMATION This repair manual contains safety information that is designed to: • Make you aware of hazards associated WARNING with engines. Before attempting to service this equipment, • Inform you of the risk of injury associated read and understand this manual and the with those hazards.
  • Page 10 WARNING WARNING Certain components in this product and its Fuel and its vapors are extremely flam- mable and explosive. related accessories contain chemicals known Fire or explosion can cause severe to the State of California to cause cancer, birth burns or death. defects, or other reproductive harm.
  • Page 11 WARNING WARNING Unintentional sparking can result in fire Charging batteries produce hydrogen or electrical shock. gas. Do not store or charge a battery Unintentional start-up can result in near an open flame or device that uti- entanglement, traumatic amputation, or lizes a pilot light or can create a spark.

  • Page 12: Engine Maintenance

    ENGINE MAINTENANCE Fuel and Oil Recommendations Use the chart (Figure 1-1) to select the best viscosity for the outdoor temperature range Fuel must meet these requirements: expected. • Clean, fresh, unleaded gasoline. • A minimum of 87 octane / 87 AKI (90 RON).

  • Page 13: Oil Change

    Oil Change NOTE: Do not use pressurized air or solvents to clean the filter. Pressurized air can damage the Change oil after the first 5 hours of operation. filter and solvents will dissolve the filter. After that, change oil after every 50 hours of High Capacity Air Filter operation.

  • Page 14: Spark Plug

    Standard Air Filter 2. Remove and inspect spark plug for wear and damage. Replace spark plug if 1. Move the slide lock (A, Figure 1-3) to the electrodes are burned away, or the unlock position. Open the cover (B). porcelain is cracked. 2.

  • Page 15: Cooling System

    Cooling System Consult the battery manufacturer for maximum charge recommendations. WARNING Running engines produce heat. Severe burns can occur on contact. • Allow muffler, engine cylinder fins, and radiator to cool before touching. • Remove accumulated combustibles from muf- fler area and cylinder area. Dirt or debris can restrict air flow and cause the engine to overheat, resulting in poor performance and reduced engine life.

  • Page 16: Engine Adjustments

    ENGINE ADJUSTMENTS Throttle Cable Adjustment NOTE: Choke valve closes when opening the throttle plate. The remote control wire should measure 2.125 3. While holding linkage, tighten governor in. (54 mm) when extended outside the casing lever nut. Torque to values listed in (A, Figure 1-7).

  • Page 17: Adjust Valve Clearance

    Top No-Load Adjustment 4. Using an Allen wrench, loosen the head set screw. Turn the adjusting nut (L) in or 1. Start engine and run at idle speed until it out until the correct clearance is obtained reaches operating temperature. between the valve stem cap and rocker 2.

  • Page 18: Adjust Readystart® Choke Link

    Adjust ReadyStart® Choke Link 7. Loosen stud and allow magnet to pull armature against gauge (G). Perform this adjustment while the engine is cold. 8. Tighten fasteners and torque to values 1. Using pliers, bend adjusting loop (M, listed in Section 12 - Engine Figure 1-11) on choke link (N) until choke Specifications.

  • Page 19: Adjust Alternator Air Gap

    Adjust Alternator Air Gap 1. Remove spark plug. 2. Loosen alternator screws (A, Figure 1-13). and slide alternator (B) away from flywheel. 3. Tighten one screw to secure alternator. 4. Line up flywheel magnet (D) with alternator. 5. Insert Air Gap Gauge Tool #CE5121 (C) between flywheel magnet and both legs of alternator.

  • Page 20: Flywheel Brake

    Flywheel Brake 6. Using a torque wrench (A, Figure 1-14) and socket to fit the flywheel nut, turn The flywheel brake is part of the safety control flywheel clockwise with brake engaged. system required for some applications. While While turning at a steady rate, torque running at the FAST speed position, the flywheel value should be 26 lb.-in.
  • Page 21 Remove Flywheel Brake Install Flywheel Brake 1. Disconnect and remove spring from brake 1. Install stop switch wire and bend end of anchor. (Standard brake assembly (A). wire 90°. Install wires on interlock switch, if Electric start brake assembly (B). equipped.
  • Page 22 SECTION 2 - TROUBLESHOOTING SYSTEMS CHECK - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18 CHECK IGNITION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18 CHECK CARBURETION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19 CHECK COMPRESSION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19...

  • Page 23: Systems Check

    SYSTEMS CHECK Most complaints concerning engine operation Once equipment sources are ruled out, the can be classified as one or a combination of the cause for most of these symptoms can be following: determined by performing a systems check in the following order: •...

  • Page 24: Check Carburetion

    A simple check to determine if the fuel is getting to the combustion chamber through the carburetor is to remove the spark plug and pour a small quantity of gasoline through the spark plug hole. Replace the plug. If the engine fires a few times and then stops, look for the same conditions as for a dry plug.

  • Page 25: Electrical Systems

    ELECTRICAL SYSTEMS Equipment Used for Testing 2. Using same spacing, drill an additional 3/8” (10 mm) hole (A) for alternate starter Digital Multimeter mounting position. A digital multimeter is recommended for all 3. Using a #7 bit, drill two holes for mounting electrical testing of Briggs &...

  • Page 26: Alternator Testing

    Alternator Testing When testing alternators, perform the tests in the following sequence: 1. Test alternator output. 2. Test diode(s) or regulator-rectifier (if equipped). The 0.5 Amp, DC alternator (Figure 2-6) is designed to operate as an integral part of the engine and is separate from the starting and ignition system.

  • Page 27: Starter Motor Testing

    Starter Motor Testing Check Starter Motor Drive and Clutch When the starter switch is activated, the pinion Before assuming an electric starter requires gear should rise, engage the flywheel ring gear, service, check the engine for freedom of rotation and crank the engine. The pinion gear must by removing the spark plug and turning the rotate counterclockwise, as viewed from the crankshaft over by hand.

  • Page 28: Battery Testing

    5. Activate starter motor and note readings of Check Battery and Cable Sizes meter and tachometer.Take reading after The following battery size recommendations are meter stabilizes (approximately 2-3 based on the minimum temperature expected seconds). and the correct weight of oil being used. With a fully-charged battery, the starter motor •...
  • Page 30 SECTION 3 - EXHAUST SYSTEM EXHAUST SYSTEM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -26 REMOVE GUARD AND MUFFLER - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27 INSPECT EXHAUST SYSTEM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27 INSTALL GUARD AND MUFFLER - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27...

  • Page 31: Exhaust System

    EXHAUST SYSTEM Some engines may be equipped with an exhaust system (muffler, bracket, and hardware) supplied by the equipment manufacturer. Contact the equipment manufacturer for muffler service information. The exhaust system covered in this section is supplied by Briggs & Stratton. Figure 3 - 1...
  • Page 32 Remove Guard and Muffler Install Muffler and Guard 1. Remove screws (A, Figure 3-1) holding 1. Insert screws with new screw lock into muffler guard (B) (if equipped). Remove muffler and place new exhaust gasket on guard and set aside. end of screws.
  • Page 34 SECTION 4 - FUEL SYSTEM AND CARBURETION FUEL TANK - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -30 CARBURETOR - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -32...
  • Page 35 FUEL TANK Figure 4 - 1...
  • Page 36 Removal 1. Drain the fuel into an appropriate container. WARNING 2. Remove air cleaner cover (A, Figure 4-1) and gas cap. Gasoline and its vapors are extremely flammable and explosive. 3. Remove screws and the static guard/ Fire or explosion can cause severe rewind assembly (B).
  • Page 37 CARBURETOR Figure 4 - 2...

  • Page 38: Inspect And Clean Carburetor

    This engine is equipped with either a Inspect and Clean Carburetor ReadyStart® Carburetor or a choke system. 1. Inspect openings in the carburetor body for evidence of wear or damage. If found, The ReadyStart® utilizes a thermostatically replace the entire carburetor assembly. controlled choke system, requiring no primer or manual choke.
  • Page 40 SECTION 5 - GOVERNOR SYSTEM GOVERNOR SYSTEM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -36 LINKAGE AND SPRING ORIENTATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37 TOP NO-LOAD RPM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37 GOVERNOR SERVICE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37...

  • Page 41: Governor System

    GOVERNOR SYSTEM Figure 5 - 1...

  • Page 42: Linkage And Spring Orientation

    Linkage and Spring Orientation NOTE: Inspect governor gear for worn weight pins and chipped or missing gear teeth before Be sure to note orientation of linkages and removing. springs before removing. Inspect Governor Parts Top No-Load RPM 1. Check oil slinger assembly for chipped or Briggs &...
  • Page 43 Install Governor Spring The governor spring is assembled to the control lever tab and the lower hole of the carburetor throttle lever. Figure 5 - 2 Spring ends must be orientated as shown in below: Figure 5 - 3 NOTE: Governor spring must pull carburetor to wide open position when adjusting governor crank and tightening governor lever.
  • Page 44 SECTION 6 - CYLINDER HEAD AND VALVES CYLINDER HEAD AND VALVES - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -40 REMOVE CYLINDER HEAD- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41 DISASSEMBLE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41 INSPECTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41...
  • Page 45 CYLINDER HEAD AND VALVES Figure 6 - 1...
  • Page 46 Before the cylinder head can be removed, other Assemble external parts must be removed, such as the air 1. Lightly coat valve stems with Valve Guide cleaner, fuel tank, oil fill tube, blower housing, Lubricant #93963, then insert valves into muffler, carburetor, control bracket assembly, cylinder head.

  • Page 48: Section 7 - Starters

    SECTION 7 - STARTERS ELECTRIC STARTER - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -44 RING GEAR - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 45 CHECK STARTER DRIVE OPERATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 45 DISASSEMBLE STARTER DRIVE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 45...
  • Page 49 ELECTRIC STARTER Figure 7 - 1...
  • Page 50 Ring Gear Inspect Starter Parts The ring gear on this engine is made of steel and 1. Inspect drive gear and pinion gear for is heat shrunk to the flywheel. It is not repairable. worn or broken teeth. Replace if If the ring gear is damaged, replace the flywheel necessary.
  • Page 51 REWIND STARTER Figure 7 - 2...
  • Page 52 The rewind starter mechanism installed on this engine is non-serviceable. The rope and handle are the only serviceable parts. Inspect Rewind Starter Parts 1. Remove flange nuts (A, Figure 7-2) and lift static guard/rewind assembly (B) off blower housing. 2. Inspect the starter assembly for wear or burrs at the rope eyelet, the center pivot post, and the anchor tab.
  • Page 54 SECTION 8 - LUBRICATION LUBRICATION SYSTEM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -50 OIL FILL TUBE AND DIPSTICK - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -51 BREATHER- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -51 OIL SLINGER LUBRICATION- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -51...

  • Page 55: Lubrication System

    LUBRICATION SYSTEM Figure 8 - 1...

  • Page 56: Section 12 - Engine Specifications

    Oil Fill Tube and Dipstick 2. Ensure governor gear and slinger rotate freely. Check for worn weight pins, worn This engine uses a plastic extended oil fill tube cup, or sticking weights. (A, Figure 8-1) and a quarter-turn dipstick with o- 3.
  • Page 58 SECTION 9 - CYLINDER AND SUMP CYLINDER AND SUMP - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -54 INSPECT CYLINDER- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55 INSPECT SUMP - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 56 MAIN BEARINGS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 56...
  • Page 59 CYLINDER AND SUMP Figure 9 - 1...
  • Page 60 Inspect Cylinder Resizing Bore If the cylinder bore is worn more than 0.003” 1. Remove oil seal and discard. Using a (0.08 mm) oversize, or is 0.0015” (.04 mm) out of plastic scraper, remove all traces of head round, it must be resized. gasket and sump gasket material.
  • Page 61 Inspect Sump Oil Seals 1. Remove oil seal and discard. PTO Oil Seal 2. Visually inspect sump for cracks, stripped Press in new oil seal to a depth of 0.175 - 0.225 threads, and wear in bearing surfaces. If in. (4 - 6 mm) (Figure 9-2). damage is found, replace the sump.
  • Page 62 SECTION 10 - CRANKSHAFT CRANKSHAFT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -58 REMOVE CRANKSHAFT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 59 INSPECT CRANKSHAFT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 59 INSTALL CRANKSHAFT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 59...
  • Page 63 CRANKSHAFT Figure 10 - 1...

  • Page 64: Remove Crankshaft

    Remove Crankshaft Install Sump 1. Drain oil from engine and all fuel from fuel 1. Protect oil seal when installing sump. tank into appropriate container. 2. Place new gasket on cylinder. 2. Remove external components including 3. Install sump on cylinder, making sure flywheel assembly.
  • Page 66 SECTION 11 - PISTONS, RINGS, AND CONNECTING RODS PISTONS, RINGS, AND CONNECTING RODS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -62 REMOVE PISTON AND CONNECTING ROD - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 63 DISASSEMBLE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 63 INSPECT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 63...
  • Page 67 PISTONS, RINGS, AND CONNECTING RODS Figure 11 - 1...
  • Page 68 Remove Piston and Connecting Rod 5. Repeat procedure for wiper ring groove and oil control ring groove. 1. Carefully remove any carbon or ridge at 6. Compare with reject dimensions listed in top of cylinder bore to prevent ring Section 12 - Engine Specifications. If breakage.
  • Page 69 Check Ring End Gap Assemble It is recommended that the entire ring set be 1. Install a pin retainer clip into one groove in replaced when servicing the piston and/or the pin bore. cylinder bore. However, the original rings can be 2.
  • Page 70 3. Install a pin retainer clip into groove on open side of piston pin bore. Ensure both retainers are firmly seated in the grooves. 4. Install the oil ring by hand as follows: • Grasp one end of lower steel rail and wind it over the top ring groove, then over the center ring groove, and finally into the oil ring groove.
  • Page 72 MODEL 110000 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...

  • Page 73: Engine Specifications

    ENGINE SPECIFICATIONS MODEL 110000 ENGINE SPECIFICATIONS Armature Air Gap .010 - .014 in. (.25 - .36 mm) Crankshaft End Play .002 - .038 in. (.05 - .97 mm) Spark Plug Gap .020 in. (.51 mm) Valve Clearance – Intake .004 - .008 in. (.10 - .20 mm) Valve Clearance –...
  • Page 74 Standard Dimensions Reject Dimensions Metric Metric CYLINDER Mag Bearing .876 in. 22.25 mm .878 in. 22.30 mm Mag Oil Seal Depth Flush Flush Bore Diameter 2.583 in. 65.61mm Bore out-of-round .0015 in. .04 mm .501 in. 12.73 mm .502 in. 12.75 mm Cam Bearing CYLINDER HEAD...
  • Page 75 MODEL 120000 ENGINE SPECIFICATIONS Armature Air Gap .010 - .014 in. (.25 - .36 mm) Crankshaft End Play .002 - .038 in. (.05 - .97 mm) Spark Plug Gap .020 in. (.51 mm) Valve Clearance – Intake .004 - .008 in. (.10 - .20 mm) Valve Clearance –...
  • Page 76 Standard Dimensions Reject Dimensions Metric Metric CYLINDER Mag Bearing .876 in. 22.25 mm .878 in. 22.30 mm Mag Oil Seal Depth Flush Flush Bore Diameter 2.688 in. 68.28 mm Bore out-of-round .0015 in. .04 mm .501 in. 12.73 mm .502 in. 12.75 mm Cam Bearing CYLINDER HEAD...

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