Briggs & Stratton Repair Manuals for other Briggs & Stratton 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) 700/750 Series DOV Air-Cooled Engines Quality Starts With A Master Service Technician www.ThePowerPortal.com (Dealers) BRIGGSandSTRATTON.
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.
6 This engine repair manual includes the following engine models: • MODEL 090600 • MODEL 100600 • MODEL 100800
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 1 2 3 4 5 6 SECTION 7 - Starters 7 SECTION 8 - Lubrication Systems SECTION 9 - Cylinders, Covers and Sumps 8 9 SECTION 10 - Crankshafts, Camshafts, Balancing Systems, and Gear Reductions 10 SECTION 11 - Pistons, Rings and Connecting Rods 11 SECTION 12 - Engine Specifications 12
THISPROPER SERVICE AND REPAIR IS IMPORTANT TO THE SAFE, ECONOMICAL AND RELIABLE
SECTION 1 - SAFETY, MAINTENANCE, AND ADJUSTMENTS SAFETY INFORMATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4 ENGINE MAINTENANCE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 FUEL AND OIL RECOMMENDATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 1 MAINTENANCE CHART - - - - - - - - - - - - - - - - - - - - - - - - - -
SAFETY INFORMATION This repair manual contains safety information that is designed to: • Make you aware of hazards associated with engines. • Inform you of the risk of injury associated with those hazards. 1 • Tell you how to avoid or reduce the risk of injury. 1 Signal Words in Safety Messages The safety alert symbol is used to identify safety information about hazards that can result in personal injury.
WARNING Fuel and its vapors are extremely flammable and explosive. Fire or explosion can cause severe burns or death. WARNING Battery posts, terminals, and related accessories contain lead and lead compounds - chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling. WARNING Certain components in this product and its related accessories contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
WARNING WARNING Unintentional sparking can result in fire or electrical shock. Unintentional start-up can result in entanglement, traumatic amputation, or severe lacerations. 1 Charging batteries produce hydrogen gas. Do not store or charge a battery near an open flame or device that utilizes a pilot light or can create a spark. WARNING Before performing adjustments or repairs: • • 1 Disconnect spark plug wire and keep it away from spark plug. Disconnect the negative (-) battery terminal.
ENGINE MAINTENANCE Fuel and Oil Recommendations viscosity for the outdoor temperature range expected. Fuel must meet these requirements: • Clean, fresh, unleaded gasoline. • A minimum of 87 octane / 87 AKI (90 RON). 1 • Gasoline with up to 10% ethanol (gasahol) or up to 15% MTBE (methyl tertiary butyl ether) is acceptable. NOTICE: Do not use unapproved gasoline, such as E85. Do not mix oil in gasoline or modify the engine to run on alternate fuels.
Oil Change Change oil after the first 5 hours of operation. After that, change oil after every 50 hours of operation. Change oil more often if engine is operated in dirty or dusty conditions, under heavy loads, or in high ambient temperatures. 2. Gently tap air filter cartridge on a hard surface to loosen debris. Replace cartridge if very dirty. 3. Wash foam pre-cleaner in warm, soapy water, then rinse and allow to air dry. 4. Reassemble the air cleaner system. 1.
3. Do not sand-blast or bead-blast the spark plug. Clean by scraping or wire brushing, and then washing in a commercial solvent. 4. Using a wire gage, check and set the gap (A, Figure 1-3) per Section 12 Specifications. 1 1 Figure 1 - 4 Charging Battery 1. Clean the battery of all dirt and corrosion. 2. Clean, then lightly grease the terminals. Figure 1 - 3 5. Re-install spark plug and torque to values listed in Section 12 - Engine Specifications. 6. Connect spark plug wire. 3.
Combustion Chamber 1 1 Remove combustion chamber deposits every 500 hours or whenever the cylinder head is removed. With the piston at Top Dead Center (TDC), scrape deposits from top of piston and upper bore with a plastic scraper. Remove the loosened deposits from around the top ring land area using compressed air or a shop vacuum and a soft bristle brush. cylinder. Do not damage bore, top of piston, cylinder head, or gasket mounting surfaces.
NOTE: Choke valve (F) closes when opening the throttle plate. 3. While holding linkage, tighten governor lever nut. Torque to values listed in Section 12 - Engine Specifications. 4. Before starting engine, manually actuate throttle linkage to check for binding. 1 1 Figure 1 - 8 Figure 1 - 7 Top No-Load Adjustment 1. Start engine and run at idle speed until it reaches operating temperature. 2. Place throttle lever (G, Figure 1-8) in FAST position. 3.
Adjust Valve Clearance Adjust ReadyStart Choke Link Perform this adjustment while the engine is cold. NOTE: Check valve clearance while the engine is cold. 1. Insert a narrow gauge such as a screwdriver, rod, or pencil (A, Figure 1-9) into the spark plug hole (B) until it touches the piston (C). Cut away view is shown. 1 2. Observe the movement of the gauge and turn the flywheel (D) clockwise past top dead center on the compression stroke until the piston has moved down the bore 0.25 in. (6.4 mm).
Adjust Armature Air Gap 1. Disconnect spark plug boot (A, Figure 111) and secure away from spark plug. 2. Loosen screw (B) and stud (C). 3. Slide armature (D) away from flywheel. 4. Tighten stud to secure armature. 5. Line up flywheel magnets (E) with armature. 1 6. Insert a strip of gauge material (F) (0.006 - 0.014 in. or 0.15 - 0.36 mm) between flywheel magnet and both legs of armature. 1 7. Loosen stud and allow magnet to pull armature against gauge (G). 8.
Adjust Alternator Air Gap 1. Remove spark plug. 2. Loosen alternator screws (A, Figure 1-12). and slide alternator (B) away from flywheel. 3. Tighten one screw to secure alternator. 4. Line up flywheel magnet (D) with alternator. 1 5. Insert a strip of gauge material (C) (0.006-0.014 in. or 0.15-0.36 mm) between flywheel magnet and both legs of alternator. 1 6. Loosen screw and allow magnet to pull alternator against gauge. 7.
Flywheel Brake The flywheel brake is part of the safety control system required for some applications. While running at the FAST speed position, the flywheel brake MUST stop the engine within three seconds when the operator releases the equipment safety control. Test Brake Torque 1. Disconnect spark plug wire. 2. Remove static guard/rewind assembly. 3. Unscrew and remove fuel tank. 4. Remove dipstick and oil fill tube. 6.
Remove Flywheel Brake 1. Disconnect and remove spring from brake anchor. 2. Disconnect safety control cable from brake assembly. 3. Loosen brake screw (A, Figure 1-14) but do not remove. 1 4. Rotate bracket to relieve tension on screw (B) and remove, then remove screw (A). 5. Press stop switch tang to disconnect stop wire, then remove brake assembly. 1 6. Disconnect wires on interlock switch, if equipped. Figure 1 - 14 Install Flywheel Brake 1. Install stop switch wire and bend end of wire 90°.
SECTION 2 - TROUBLESHOOTING SYSTEMS CHECK - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18 CHECK IGNITION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18 CHECK CARBURETION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19 CHECK COMPRESSION - - - -
SYSTEMS CHECK Most complaints concerning engine operation can be classified as one or a combination of the following: • Will not start • Hard starting 1. Ignition • Lack of power 2. Carburetion • Runs rough • Vibration 2 • Overheating 1 Once equipment sources are ruled out, the cause for most of these symptoms can be determined by performing a systems check in the following order: 3.
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. 3) Check Compression Figure 2 - 2 If spark does not occur, look for: Use Leakdown Tester #19545 to check the sealing capabilities of the compression components.
ELECTRICAL SYSTEMS Equipment Used for Testing 2 1 Digital Multimeter A digital multimeter is recommended for all electrical testing of Briggs & Stratton engines. The meter can be used to read volts, ohms, amperes, and to test diodes. The Fluke® Digital Multimeter #19464 and the UNI-T® Digital Multimeter #19581 are available from your Briggs & Stratton source of supply. NOTICE: The digital multimeters are equipped with fuses to prevent damage to the meter if the input limits are exceeded.
Alternator Testing The following alternator test procedures were developed using the Fluke® Digital Multimeter. When performing alternator tests with the UNI-T® Digital Multimeter, refer to the operating manual supplied with that meter for the proper procedure. All test values will be the same regardless the meter used. 5. Attach RED test clip to output lead (A, Figure 2-7). 6. Attach BLACK test clip to charging lead (B).
Starter Motor Testing Before assuming an electric starter requires service, check the engine for freedom of rotation by removing the spark plug and turning the crankshaft over by hand. Any belt, clutch, or other parasitic load will affect the starter cranking performance, so ensure their effects are minimized. The following list is given to aid in diagnosing problems for the 12 Volt starting system. 1.
5. Activate starter motor and note readings of meter and tachometer.Take reading after meter stabilizes (approximately 2-3 seconds). With a fully-charged battery, the starter motor should deliver 6500 RPM (minimum) and 35 Amps (maximum). If the starter motor does not meet these specifications, it must be replaced. Battery Testing A 12 Volt, lead acid, wet cell battery is required to operate the starter motor. This type is available as a wet charge or dry charge battery.
WARNING Battery posts, terminals, and related accessories contain lead and lead compounds - chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling. 2 1 Check Battery Installation 1. Ensure the battery is in a holder with a flat base. Tighten holder down evenly until snug. DO NOT over tighten. 2. Clean, then lightly grease the terminals. 3. Connect positive (+) cable to positive battery post FIRST, to prevent sparks from accidental grounding.
SECTION 3 - EXHAUST SYSTEM EXHAUST SYSTEM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -26 REMOVE GUARD AND MUFFLER - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -27 INSPECT EXHAUST SYSTEM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -27 INSTALL GUARD AND MUFFLER- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
EXHAUST SYSTEM 1 3 Figure 3 - 1 26
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. Remove Guard and Muffler 1. Remove screws (A, Figure 3-1) holding muffler guard (B). Remove guard and set aside. 2. Bend back tabs on screw lock (C) and remove screws (D), muffler (E), and gasket (F). Discard gasket.
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SECTION 4 - FUEL SYSTEM AND CARBURETION FUEL TANK - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -30 CARBURETOR - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -32 4 4 29
FUEL TANK 4 4 Figure 4 - 1 30
Removal WARNING Gasoline and its vapors are extremely flammable and explosive. Fire or explosion can cause severe burns or death. When adding fuel: • Turn engine OFF and let engine cool for at least 2 minutes before removing the fuel cap. • Fill fuel tank outdoors or in a well-ventilated area. • Do not overfill fuel tank. To allow for expansion of the gasoline, do not fill above the bottom of the fuel tank neck. • Keep gasoline away from sparks, open flames, pilot lights, heat and other ignition sources.
CARBURETOR 4 4 Figure 4 - 2 32
The DOV, 700/750-Series engine is equipped with a ReadyStart® Carburetor, which utilizes a thermostatically controlled choke system, requiring no primer or manual choke. The linkages and carburetor body have no serviceable components. Remove Carburetor WARNING Before servicing the carburetor or other fuel system components, drain all fuel from the tank and turn OFF the fuel valve (if equipped). Do not attempt to stop the fuel flow by plugging the fuel hose. 1.
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SECTION 5 - GOVERNOR SYSTEM GOVERNOR SYSTEM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -36 LINKAGE AND SPRING ORIENTATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -37 TOP NO-LOAD RPM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -37 GOVERNOR SERVICE- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
GOVERNOR SYSTEM 4 5 Figure 5 - 1 36
Linkage and Spring Orientation Governor Service Be sure to note orientation of linkages and springs before removing (Figure 5-2). The mechanical governor is part of the oil slinger assembly (A, Figure 5-1) attached to the sump. The governor crank (B) is mounted in the cylinder assembly. Disassemble 1. Drain oil from engine into an appropriate container. 2. Remove burrs and clean the crankshaft PTO, the carefully remove sump from engine and discard the gasket. 4 3.
Assemble Governor 1. Install governor crank from inside cylinder. Slide washer on crank and install new push nut or clip. 2. Install governor gear on spindle in sump. Using thumbs, press firmly until gear clicks into place. 3. Align dot on timing gear with notch in cam gear and place cam gear on boss in cylinder (Inset, Figure 5-1). 4. Slide governor lever on crank and fingertighten bolt and nut until crank turns with slight resistance. 4 5.
SECTION 6 - CYLINDER HEAD AND VALVES CYLINDER HEAD AND VALVES - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -40 REMOVE CYLINDER HEAD - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -41 DISASSEMBLE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -41 INSPECTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CYLINDER HEAD AND VALVES 6 6 Figure 6 - 1 40
Before the cylinder head can be removed, other external parts must be removed, such as the air cleaner, fuel tank, oil fill tube, blower housing, muffler, carburetor, control bracket assembly, and intake manifold. Remove Cylinder Head 1. Remove spark plug. 2. Remove four screws (A, Figure 6-1) from valve cover then remove cover (B) and gasket (C). Discard gasket. 3. Remove cylinder head screws (D), then remove head (E) and gasket (F) from cylinder. Discard gasket. Disassemble 1.
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SECTION 7 - STARTERS ELECTRIC STARTER- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -44 RING GEAR- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -45 DISASSEMBLE STARTER DRIVE- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -45 CHECK STARTER DRIVE OPERATION - - - - - - - - - - - - - - - - - - - - - - - - - - - -
ELECTRIC STARTER 7 7 Figure 7 - 1 44
12 Volt Starter Ring Gear The ring gear on this engine is made of steel and is heat shrunk to the flywheel. It is not repairable. If the ring gear is damaged, replace the flywheel assembly. Check Starter Drive Operation When the starter switch is activated, the starter gear should engage the flywheel ring gear and crank the engine. The starter gear should not bind on the helix. If necessary, use a mild solvent to clean the starter gear and helix. Dry with compressed air.
REWIND STARTER 7 7 Figure 7 - 2 46
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 fasteners (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. If damage is found, replace the static guard/rewind assembly. 7 Figure 7 - 5 3. Inspect the rope for broken or frayed areas.
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SECTION 8 - LUBRICATION LUBRICATION SYSTEM- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -50 OIL FILL TUBE AND DIPSTICK- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -51 BREATHER - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -51 OIL SLINGER LUBRICATION - - - - - - - - - - - - - - - - - - - - - - - - - - - -
LUBRICATION SYSTEM 4 8 Figure 8 - 1 50
Oil Fill Tube and Dipstick Oil Slinger Lubrication This engine uses a plastic extended oil fill tube (A, Figure 8-1) and a quarter-turn dipstick with oring (B). An o-ring (C) seals the tube in the sump and a retaining bracket (D) and screw secure it to the engine. The oil fill tube and dipstick must be replaced as a set. The governor gear/oil slinger (J) is used on vertical shaft engines. It is mounted to the sump and driven by the cam gear.
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SECTION 9 - CYLINDER AND SUMP CYLINDER AND SUMP - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -54 INSPECT CYLINDER - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -55 INSPECT SUMP - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -56 MAIN BEARINGS - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CYLINDER AND SUMP 4 9 Figure 9 - 1 54
Inspect Cylinder 1. Remove oil seal and discard. Using a plastic scraper, remove all traces of head gasket and sump gasket material. • Visually check cylinder for cracks, stripped threads, and bore damage. Bore damage, if not severe, may be corrected by reconditioning or resizing. • If cracks are found, replace the cylinder. • Stripped threads can sometimes be repaired using a helicoil, but if multiple holes have thread damage, replace the cylinder. 2.
Inspect Sump 1. Remove oil seal and discard. 2. Visually inspect sump for cracks, stripped threads, and wear in bearing surfaces. If damage is found, replace the sump. Oil Seals Cylinder Press in new oil seal to a depth of 0.156 - 0.206 in. (3 - 5mm) (Figure 9-2). Cleaning Sump 1. Wash the sump thoroughly with kerosene or other commercial solvent. 2. Wash sump again using a stiff brush with soap and hot water. 3. Rinse sump thoroughly with hot running water. 4 4.
SECTION 10 - CRANKSHAFT CRANKSHAFT- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -58 REMOVE CRANKSHAFT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -59 INSPECT CRANKSHAFT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -59 INSTALL CRANKSHAFT- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CRANKSHAFT 4 10 Figure 10 - 1 58
Remove Crankshaft 1. Drain oil from engine and all fuel from fuel tank into appropriate container. 2. Remove external components including flywheel assembly. 3. Remove burrs and clean crankshaft PTO, then remove sump. 4. Carefully tip engine with PTO-end facing up. 5. Rotate crankshaft to place piston at top dead center. Install Sump to Cylinder 1. Insert correct seal protector from Kit #19356, to protect oil seal when installing sump. 2. Place new gasket on cylinder. 3.
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SECTION 11 - PISTON, RINGS, AND CONNECTING ROD PISTON, RINGS, AND CONNECTING ROD- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -62 REMOVE PISTON AND CONNECTING ROD- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -63 DISASSEMBLE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -63 INSPECT- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
PISTON, RINGS, AND CONNECTING ROD 4 11 Figure 11 - 1 62
Remove Piston and Connecting Rod 1. Carefully remove any carbon or ridge at top of cylinder bore (A, Figure 11-1) to prevent ring breakage. 2. Remove rod bolts (B) and connecting rod cap (C). 5. Repeat procedure for wiper ring groove and oil control ring groove. 6. Compare with reject dimensions listed in Section 12 - Engine Specifications. If clearance meets or exceeds the reject dimensions, replace the piston. 3. Push piston (D) and connecting rod (E) out through top of bore. Disassemble 1.
1. Clean all carbon from the rings and the cylinder bore. NOTE: The notch or arrow on the piston and “MAG” on the rod must face the same direction. 2. Insert one of the original rings approximately one inch down the cylinder bore. 3. Measure the ring end gap with a feeler gauge (Figure 11-3). 4. Repeat the procedure for each ring in the set. 5. Compare with reject dimensions listed in Section 12 - Engine Specifications.
• Install the spring expander on top of the lower rail, then install the upper steel rail. 5. Using Piston Ring Expander #19340, install the wiper ring, then the compression ring. NOTE: If installing the original rings, ensure the top sides are facing the top of the piston. If installing a new ring set, follow the instructions provided with the set. Install Piston and Connecting Rod 1. Thoroughly clean and oil cylinder bore and crankpin journal of crankshaft. 4 2.
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SECTION 12 - ENGINE SPECIFICATIONS MODEL 090600 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -68 MODEL 100600 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -70 MODEL 100800 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -72 12 67
ENGINE SPECIFICATIONS MODEL 090600 ENGINE SPECIFICATIONS Alternator Air Gap Armature Air Gap Crankshaft End Play Spark Plug Gap Valve Clearance – Intake Valve Clearance – Exhaust FASTENER TORQUE SPECIFICATIONS Air Cleaner Base Air Cleaner Cover Alternator Armature Blower Housing Breather Cover Breather Reed Bowl Nut Carburetor to Cylinder Head Casing Clamp Connecting Rod Control Bracket Control Panel Trim Crankcase Sump Cylinder Head Flywheel Brake Assembly Flywheel Guard Flywheel Nut Fuel Tank Governor Lev
REJECT DIMENSIONS CYLINDER Main Bearing Bore Diameter Bore Out-Of-Round CYLINDER HEAD Valve Guide Intake Valve Stem Diameter Exhaust Valve Stem Diameter CYLINDER COVER / SUMP PTO Bearing CRANKSHAFT Crank Pin Journal Mag-Side Journal PTO-Side Journal CONNECTING ROD Crank Pin Bearing Piston Pin Bearing PISTON Piston Pin Piston Pin Bearing Ring End Gap (Top) Ring End Gap (Middle) Ring End Gap (Oil Control) Ring Land Clearance (Top) Ring Land Clearance (Middle) Ring Land Clearance (Oil Control) STARTER ROPE Rop
MODEL 100600 ENGINE SPECIFICATIONS Alternator Air Gap Armature Air Gap Crankshaft End Play Spark Plug Gap Valve Clearance – Intake Valve Clearance – Exhaust FASTENER TORQUE SPECIFICATIONS Air Cleaner Base Air Cleaner Cover Alternator Armature Blower Housing Breather Cover Breather Reed Bowl Nut Carburetor to Cylinder Head Casing Clamp Connecting Rod Control Bracket Control Panel Trim Crankcase Sump Cylinder Head Flywheel Brake Assembly Flywheel Guard Flywheel Nut Fuel Tank Governor Lever Nut Muffler Muffle
REJECT DIMENSIONS CYLINDER Main Bearing Bore Diameter Bore Out-Of-Round CYLINDER HEAD Valve Guide Intake Valve Stem Diameter Exhaust Valve Stem Diameter CYLINDER COVER / SUMP PTO Bearing CRANKSHAFT Crank Pin Journal Mag-Side Journal PTO-Side Journal CONNECTING ROD Crank Pin Bearing Piston Pin Bearing PISTON Piston Pin Piston Pin Bearing Ring End Gap (Top) Ring End Gap (Middle) Ring End Gap (Oil Control) Ring Land Clearance (Top) Ring Land Clearance (Middle) Ring Land Clearance (Oil Control) STARTER ROPE Rop
MODEL 100800 ENGINE SPECIFICATIONS Alternator Air Gap Armature Air Gap Crankshaft End Play Spark Plug Gap Valve Clearance – Intake Valve Clearance – Exhaust FASTENER TORQUE SPECIFICATIONS Air Cleaner Base Air Cleaner Cover Alternator Armature Blower Housing Breather Cover Breather Reed Bowl Nut Carburetor to Cylinder Head Casing Clamp Connecting Rod Control Bracket Control Panel Trim Crankcase Sump Cylinder Head Flywheel Brake Assembly Flywheel Guard Flywheel Nut Fuel Tank Governor Lever Nut Muffler Muffle
REJECT DIMENSIONS CYLINDER Main Bearing Bore Diameter Bore Out-Of-Round CYLINDER HEAD Valve Guide Intake Valve Stem Diameter Exhaust Valve Stem Diameter CYLINDER COVER / SUMP PTO Bearing CRANKSHAFT Crank Pin Journal Mag-Side Journal PTO-Side Journal CONNECTING ROD Crank Pin Bearing Piston Pin Bearing PISTON Piston Pin Piston Pin Bearing Ring End Gap (Top) Ring End Gap (Middle) Ring End Gap (Oil Control) Ring Land Clearance (Top) Ring Land Clearance (Middle) Ring Land Clearance (Oil Control) STARTER ROPE Rop
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