Briggs & Stratton 130G00, 131G00, 13R200, 13U100, 13U200 Repair Manual

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Foreword

This manual was written to assist engine technicians and service personnel with the maintenance and repair procedures for Briggs & Stratton® engines. It assumes that persons using this manual have been properly trained and are familiar with the service procedures for these products, including the proper use of required tools and the application of appropriate safety practices. Persons untrained or unfamiliar with these procedures or products should not attempt to perform such work.

Proper maintenance and repair is important to safe, reliable operation of all engines and engine-driven systems. The maintenance, troubleshooting, and repair procedures described in this manual are appropriate for the Briggs & Stratton engines described herein. Alternative methods or procedures may pose risks to both personal safety and engine reliability and are not endorsed or recommended by Briggs & Stratton.

All information, illustrations, and specifications contained in this manual were based on the data available at the time of publication. Briggs & Stratton Corporation reserves the right to change, alter, or otherwise improve the product or the product manuals at any time without prior notice.

Briggs & Stratton offers two complementary publications to enhance understanding of engine technology, maintenance, and repair. However, neither publication is a substitute for a recognized training program for engine technicians.

• For consumers, comprehensive overview of how small air-cooled engines work, basic troubleshooting, and step-by-step maintenance procedures.

• For engine technicians and consumers alike, an in-depth study of engine theory and operation can be found in the textbook

Both publications can be purchased at BRIGGSandSTRATTON.COM or through a local Briggs & Stratton Authorized Service Dealer.

No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying or recording by any information storage and retrieval system, without prior written permission from Briggs & Stratton Corporation.

Small Engine and Equipment Maintenance Guide

Small Engines

(Part No. CE8020).

(Part No. CE8155) provides a

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This engine repair manual includes the following engine models:

• MODEL 130G00

• MODEL 131G00

• MODEL 13R200

• MODEL 13U100

• MODEL 13U200

NOTE: Some models have limited service parts. Review the

before conducting any service work.

NOTE: The images in this document are representative and may differ according to model.

Illustrated Parts List

for part availability

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HOW TO USE THIS MANUAL

Besides describing the service maintenance tasks and the intervals at which they are to be performed, two basic levels of service are presented in this manual: engine top end service and engine bottom end service. The manner in which these instructions are used depends upon the tasks to be performed and the level of disassembly required.

Remove External Assemblies

To prepare the engine for service, whether top or bottom end, first see

ASSEMBLIES

presented is the order in which the assemblies are most easily removed from the engine.

NOTE: A few exceptions to this rule do exist, such as the muffler and rewind starter, which may be serviced without having to remove other external assemblies.

Top End Service

If servicing only cylinder head components, see

DISASSEMBLY, HEAD. ASSEMBLY.

Bottom End Service

If servicing bottom end components, such as the piston, connecting rod, crankshaft, etc., first see

5 - DISASSEMBLE ENGINE, TOP END DISASSEMBLY, DISASSEMBLY SUBASSEMBLIES, CAMSHAFT;

end service is complete, see proceed to

Install External Assemblies

When cylinder head service is complete, see

to remove the air cleaner, fuel tank, carburetor, etc. The order in which the topics are

SECTION 5 - DISASSEMBLE ENGINE, TOP END

and then proceed to

in the same section. When finished, move to

and see

and

CRANKCASE AND CRANKCASE COVER,

TOP END ASSEMBLY

PISTON AND CONNECTING ROD; FLYWHEEL, CRANKSHAFT AND

SECTION 7 - ASSEMBLE ENGINE, BOTTOM END ASSEMBLY,

SECTION 6 - SERVICE ENGINE SUBASSEMBLIES, CYLINDER

SECTION 7 - ASSEMBLE ENGINE, TOP END

and then proceed to

SECTION 6 - SERVICE ENGINE

in the same section.

SECTION 4 - REMOVE EXTERNAL

SECTION

BOTTOM END

for all service instructions. When bottom

and then

When the top and bottom ends of the engine are assembled, see

ASSEMBLIES

the assemblies are most easily installed on the engine. These instructions also include any cleaning, inspection, or adjustments that may be recommended.

to complete the project. The order in which the topics are presented is the order in which

SECTION 8 - INSTALL EXTERNAL

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SECTION 1 – SAFETY AND GENERAL INFORMATION

SECTION 2 – MAINTENANCE

SECTION 3 – TROUBLESHOOTING/SPECIAL TOOLS

SECTION 4 – REMOVE EXTERNAL ASSEMBLIES

SECTION 5 – DISASSEMBLE ENGINE

SECTION 6 – SERVICE ENGINE SUBASSEMBLIES

SECTION 7 – ASSEMBLE ENGINE

SECTION 8 – INSTALL EXTERNAL ASSEMBLIES

SECTION 9 – SPECIFICATIONS

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SECTION 1 – SAFETY AND GENERAL INFORMATION

SAFETY - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4

Safety Alert Symbol and Signal Words - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4

Hazard Symbols and Meanings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4

General Safety Messages - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4

GENERAL INFORMATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

Engine Identification - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

Fuel Recommendations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

High Altitude - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

Oil Recommendations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

Storage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8

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This manual contains safety information that will:

• Make you aware of hazards associated with engines.

• Inform you of the risk of injury associated with those hazards.

• Instruct you how to avoid or reduce the risk of injury.

Safety Alert Symbol and Signal Words

The safety alert symbol is used to identify safety 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 avoided,

could result in death or serious injury.

SAFETY

General Safety Messages

Prior to work, read and understand the section(s) of this manual that pertain to the job. Follow all safety warnings.

• Always use fresh gasoline. Stale fuel can cause gum deposits in the carburetor and cause leakage, flow restrictions, or other problems.

• Check fuel lines and fittings frequently for cracks or leaks and replace if necessary.

WARNING

Before attempting to service this equipment, read and understand this manual and the operating instructions of the engine and the equipment.

WARNING

Failure to follow instructions could result in serious injury (including paralysis) and even death.

CAUTION indicates a hazard which, if not avoided,

could result in minor or moderate injury.

NOTICE

to the product.

indicates an situation that could result in damage

Hazard Symbols and Meanings

MeaningSymbolMeaningSymbol

Safety information about hazards that can result in personal injury.

moving parts

Kickback hazard

Read and understand the Operator's Manual before operating or servicing the unit.

Explosion hazardFire hazard

Explosion hazardShock hazard

Toxic fume hazardHot surface hazard

Chemical hazardAmputation hazard -

Thrown object hazard wear eye protection

WARNING

Battery post, 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. Wash hands after handling.

WARNING

Briggs & Stratton Engines are not designed for and are not to be used to power: fun-karts; go-karts; children's, recreational, or sport all-terrain vehicles (ATVs); motorbikes; hovercraft; aircraft products; or vehicles used in competitive events not sanctioned by Briggs & Stratton. For information about competitive racing products, see www.briggsracing.com. For use with utility and side-by-side ATVs, please contact Briggs & Stratton Power Application Center, 1-866-927-3349. Improper engine application may result in serious injury or death.

Amputation hazard entanglement

WARNING

The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

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WARNING

Fuel and its vapors are extremely flammable and explosive which could cause burns, fire or explosion resulting in death or serious injury.

When Adding Fuel

• Turn engine OFF and let engine cool at least 2 minutes before removing the fuel cap. Loosen cap slowly to relieve pressure in tank.

• Fill fuel tank outdoors or in well-ventilated area.

• Do not overfill fuel tank. To allow for expansion of the fuel, do not fill above the bottom of the fuel tank neck.

• Keep fuel away from sparks, open flames, pilot lights, heat, and other ignition sources.

• Check fuel lines, tank, cap, and fittings frequently for cracks or leaks. Replace if necessary.

• If fuel spills, wait until it evaporates before starting engine.

• Do not light a cigarette or smoke.

When Starting Engine

• Ensure that spark plug, muffler, fuel cap and air cleaner (if equipped) are in place and secured.

• Do not crank engine with spark plug removed.

• If engine floods, set choke (if equipped) to OPEN / RUN position, move throttle (if equipped) to FAST position and crank until engine starts.

When Operating Equipment

• Do not tip engine or equipment at angle which causes fuel to spill.

• Disconnect spark plug wire.

When Storing Fuel or Equipment with Fuel In Tank

• Store away from furnaces, stoves, water heaters, clothes dryers, or other appliances that have pilot lights or other ignition source because they could ignite fuel vapors.

WARNING

Starting engine creates sparking which could ignite nearby flammable gases causing explosion or fire resulting in death or serious injury.

• If there is natural or LP gas leakage in the area, do not start engine.

• Do not use pressurized starting fluids because vapors are flammable.

WARNING

POISONOUS GAS HAZARD. Engine exhaust contains carbon monoxide, a poisonous gas that could kill you in minutes. You CANNOT see it, smell it, or taste it. Even if you do not smell exhaust fumes, you could still be exposed to carbon monoxide gas. If you start to feel sick, dizzy, or weak while using this product, get to fresh air RIGHT AWAY. See a doctor. You may have carbon monoxide poisoning.

• Do not operate this product inside 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 choke the carburetor to stop engine.

• Never start or run the engine with the air cleaner assembly (if equipped) or the air filter (if equipped) removed.

When Changing Oil

• If you drain the oil from the oil fill hole (not recommended), the fuel tank must be empty or fuel can leak out and result in a fire or explosion.

When Tipping Unit for Maintenance

• When performing maintenance that requires the unit to be tipped, the fuel tank, if mounted on the engine, must be empty or fuel can leak out and result in a fire or explosion.

When Transporting Equipment

• Transport/move/repair with fuel tank EMPTY or with fuel shutoff valve OFF.

• Operate this product ONLY outside far away from windows, doors and vents to reduce the risk of carbon monoxide gas from accumulating and potentially being drawn towards occupied spaces.

• Install battery-operated carbon monoxide alarms or plug-in carbon monoxide alarms with battery back-up according to the manufacturer's instructions. Smoke alarms cannot detect carbon monoxide gas.

• DO NOT run this product inside homes, garages, basements, crawlspaces, sheds, or other partially-enclosed spaces even if using fans or opening doors and windows for ventilation. Carbon monoxide can quickly build up in these spaces and can linger for hours, even after this product has shut off.

• ALWAYS place this product downwind and point the engine exhaust away from occupied spaces.

WARNING

Starter cord kickback (rapid retraction) will pull hand and arm toward engine faster than you can let go which could cause broken bones, fractures, bruises, or sprains resulting in serious injury.

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• When starting engine, pull the starter cord slowly until resistance is felt and then pull rapidly to avoid kickback.

• Remove all external equipment / engine loads before starting engine.

• Direct-coupled equipment components such as, but not limited to, blades, impellers, pulleys, sprockets, etc., must be securely attached.

WARNING

Rotating parts could entangle hands, feet, hair, clothing, or accessories resulting in serious injury.

• Disconnect the spark plug wire and keep it away from the spark plug.

• Disconnect battery at negative terminal (only engines with electric start.)

• Use only correct tools.

• Do not tamper with governor spring, links or other parts to increase engine speed.

• Replacement parts must be of the same design and installed in the same position as the original parts. Other parts may not perform as well, may damage the unit, and may result in injury.

• Do not strike the flywheel with a hammer or hard object because the flywheel may later shatter during operation.

• NEVER operate equipment without protective housing or covers in place.

• DO NOT wear loose clothing, jewelry or anything that could become entangled in the equipment.

• Tie up long hair and remove jewelry.

• Keep hands and feet away from rotating parts.

WARNING

Running engines produce heat. Engine parts, especially mufflers, become extremely hot which could cause severe thermal burns or catching fire to combustible debris, such as leaves, grass, brush, etc., resulting in serious injury.

• Allow muffler, engine cylinder and fins to cool before touching.

• Remove accumulated debris from muffler area and cylinder area.

• It is a violation of California Public Resource Code, Section 4442, to use or operate the engine on any forest-covered, brush-covered, or grass-covered land unless the exhaust system is equipped with a spark arrester, as defined in Section 4442, maintained in effective working order. Other states or federal jurisdictions may have similar laws. Contact the original equipment manufacturer, retailer, or dealer to obtain a spark arrester designed for the exhaust system installed on this engine.

WARNING

Unintentional sparking could cause fire or electric shock resulting in death or serious injury.

Unintentional start-up could result in entanglement, traumatic amputation, or laceration.

When testing for spark:

• Use approved spark plug tester.

• Do not check for spark with spark plug removed.

WARNING

Charging batteries produce hydrogen gas which could cause explosion resulting in death or serious injury.

• Do not store or charge a battery near an open flame or device that utilizes a pilot light or can create a spark.

WARNING

Damaged, worn, or loose fuel components can leak fuel which could cause explosion or fire resulting in death or serious injury.

• All fuel components should be in good condition and properly maintained.

• Repairs should only be made with factory approved parts.

• Repair work should be done by a qualified technician.

• Flexible supply lines should be checked regularly to make sure they are in good condition.

WARNING

Prolonged or repeated contact with used motor oil could cause injury.

• Used motor oil has been shown to cause skin cancer in certain laboratory animals.

• Thoroughly wash exposed areas with soap and water.

Before performing adjustments or repairs:

NOTICE

Failure to follow instructions could result in property damage.

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GENERAL INFORMATION

Engine Identification

See (A) or (B) in Figure 1 for location of engine identification.

High Altitude

At altitudes over 5,000 feet (1524 meters), a minimum 85 octane / 85 AKI (89 RON) gasoline is acceptable.

For carbureted engines, high altitude adjustment is required to remain emissions compliant. Operation without this adjustment will cause decreased performance, increased fuel consumption, and increased emissions. Contact a Briggs & Stratton Authorized Service Dealer for high altitude adjustment information. Operation of the engine at altitudes below 2,500 feet (762 meters) with the high altitude adjustment is not recommended.

For Electronic Fuel Injection (EFI) engines, no high altitude adjustment is necessary.

Oil Recommendations

Oil Capacity: See the

NOTICE

This engine was shipped from Briggs & Stratton without oil. Equipment manufacturers or dealers may have added oil to the engine. Before you start the engine for the first time, make sure to check the oil level and add oil according to the instructions in this manual. If you start the engine without oil, it will be damaged beyond repair and will not be covered under warranty.

Specifications

section.

Fuel Recommendations

Fuel must meet these requirements:

• Clean, fresh, unleaded gasoline.

• A minimum of 87 octane / 87 AKI (91 RON). For high altitude use, see below.

• Gasoline with up to 10% ethanol (gasohol) is acceptable.

NOTICE

and E85. Do not mix oil in gasoline or modify the engine to run on alternate fuels. Use of unapproved fuels will cause damage to engine components, which will not be covered under warranty.

To protect the fuel system from gum formation, mix a fuel stabilizer into the fuel. See Storage. All fuel is not the same. If starting or performance problems occur, change fuel providers or change brands. This engine is certified to operate on gasoline. The emissions control system for this engine is EM (Engine Modifications).

Do not use unapproved gasolines, such as E15

We recommend the use of Briggs & Stratton Warranty Certified oils for best performance. Other high-quality detergent oils are acceptable if classified for service SF, SG, SH, SJ or higher. Do not use special additives.

Outdoor temperatures determine the proper oil viscosity for the engine. Use the chart to select the best viscosity for the outdoor temperature range expected. Engines on most outdoor power equipment operate well with 5W-30 Synthetic oil. For equipment operated in hot temperatures, Vanguard™ 15W-50 Synthetic oil provides the best protection.

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SAE 30 - Below 40 °F (4 °C) the use of SAE 30 will result in hard

starting.

10W-30 - Above 80 °F (27 °C) the use of 10W-30 may cause

increased oil consumption. Check oil level more frequently.

5W-30C

Synthetic 5W-30D

Vanguard™ Synthetic 15W-50E

Storage

Fuel can become stale when stored over 30 days. Stale fuel causes acid and gum deposits to form in the fuel system or on essential carburetor parts. To keep fuel fresh, use

Briggs & Stratton® Advanced Formula Fuel Treatment & Stabilizer, available wherever Briggs & Stratton genuine

service parts are sold.

There is no need to drain gasoline from the engine if a fuel stabilizer is added according to instructions. Run the engine for 2 minutes to circulate the stabilizer throughout the fuel system before storage. If gasoline in the engine has not been treated with a fuel stabilizer, it must be drained into an approved container. Run the engine until it stops from lack of fuel. The use of a fuel stabilizer in the storage container is recommended to maintain freshness.

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SECTION 2 – MAINTENANCE

MAINTENANCE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10

Maintenance Schedule - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10

Change Engine Oil/Check Engine Oil Level - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10

Clean Muffler, Rewind Starter Finger Guard, and Controls - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11

Clean/Replace Air Filter and Pre-Cleaner - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11

Dual Element Oval Air Filter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12

Oil Bath Air Filter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12

Foam Low Mount Air Filter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 13

Foam Large Panel Air Filter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 13

Paper Air Filter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14

Clean/Inspect Muffler and Spark Arrester - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14

Change 6:1 Gear Reduction Oil (If Equipped) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

Clean/Gap/Replace Spark Plug - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

Clean/Replace In-Tank Fuel Filter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16

Clean Carburetor Sediment Bowl - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17

Clean Air Cooling System - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17

Check/Adjust Valve Clearance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18

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MAINTENANCE

Maintenance Schedule

After First 5 Hours

• Change Engine Oil

Every 8 Hours or Daily

• Check Engine Oil Level

• Clean Muffler, Rewind Starter Finger Guard, and Controls

Every 25 Hours or Annually

• Clean Air Filter and Pre-Cleaner †

Every 50 Hours or Annually

• Change Engine Oil

• Clean/Inspect Muffler and Spark Arrester

Every 100 Hours or Annually

• Change 6:1 Gear Reduction Oil (If Equipped)

Annually

• Replace Air Filter and Pre-Cleaner

• Clean/Gap/Replace Spark Plug

• Clean/Replace In-Tank Fuel Filter

• Clean Carburetor Sediment Bowl

• Clean Air Cooling System †

• Check/Adjust Valve Clearance ‡

† Clean more often in dusty conditions or when airborne debris is

present.

‡ Not required unless engine performance problems are noted.

Change Engine Oil/Check Engine Oil Level

1. Place engine on a flat, level surface.

2. Remove spark plug wire from spark plug terminal. Secure spark plug wire to prevent unintentional contact with spark plug terminal.

3. See Figure 2. Thoroughly clean area around dipstick oil plug (A) of all dirt and debris.

4. Remove dipstick oil plug and wipe dipstick with a clean, lint free cloth (B). NOTE: Proceed to step 8 if only checking engine oil level.

5. Remove oil drain plug(s) with sealing washer(s) at base of engine (C) and drain oil into an approved container.

6. Install oil drain plug(s) with sealing washer(s) and tighten as follows.

Oil Drain Plug

TorqueModels

140-200 lb-in (15.8-22.6 N-m)130G00, 131G00, 13R200

248-266 lb-in (28-30 N-m)13U100, 13U200

7. Using a funnel and a short length of plastic tubing, slowly pour 19-22 ounces (550-650 ml) of the recommended type of oil into the oil plug opening (D). See

Section 1 - Safety and General Information,

General Information, Oil Recommendations.

overfill.

8. Slowly insert dipstick oil plug until lightly seated on threads, but do not tighten.

NOTE: The most accurate oil level readings are obtained when the engine is cold.

9. Allow a few seconds to elapse, and then slowly remove dipstick oil plug.

10. Verify that oil level (E) is on the cross hatch pattern at or near the H(igh) mark.

NOTE: Observe oil level on both sides of the dipstick. The lower level of the two readings is the correct oil level measurement.

11. Add oil as necessary until oil level is correct.

12. Install dipstick oil plug and tighten as follows.

Dipstick Oil Plug

TorqueModels

10-30 lb-in (1.1-3.4 N-m)130G00, 131G00, 13R200

18-27 lb-in (2-3 N-m)13U100, 13U200

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13. Install spark plug wire onto spark plug terminal.

14. Start and run engine for one minute. Check for oil leaks while engine is running.

15. Dispose of used oil at a proper waste disposal or recycling center.

Clean Muffler, Rewind Starter Finger Guard, and Controls

NOTE: Proper cleaning reduces the risk of engine damage

due to overheating and ignition of accumulated debris.

NOTE: Avoid using high pressure compressed air, which can force dirt and debris deeper into engine cavities and crevices. Do not use a pressurized water spray as water intrusion can contaminate both oil and fuel systems and lead to corrosion.

1. Remove spark plug wire from spark plug terminal. Secure spark plug wire to prevent unintentional contact with spark plug terminal.

2. Remove air cleaner cover and air filter. See

Clean/Replace Air Filter and Pre-Cleaner

3. See Figure 3. Remove three hex flange screws to release rewind starter (A) from blower housing.

in this section.

NOTE: Note orientation of the rewind starter before removal.

4. Thoroughly clean rewind starter finger guard and muffler (B). Carefully clean governor link, springs, and controls (C). Proceed as follows:

A. Remove all loose debris by hand.

B. Remove dust and dirt with a soft bristle brush and

a portable hand held vacuum.

C. Gently scrape away stubborn accumulations of dirt

and other deposits using a plastic putty knife or stiff bristle brush.

D. Apply a light solvent to bristle brush to loosen and

remove grit and oily residue, if necessary.

5. Verify that all combustible debris is removed from area around and behind muffler.

6. Verify that governor link, springs, and controls move freely without sticking, binding, or contacting blower housing or fuel tank.

7. Orient rewind starter as noted before removal.

NOTE: Rewind starter may be installed in the 2 o'clock, 8 o'clock, 10 o'clock, or 12 o'clock positions.

8. Loosely install three hex flange screws to fasten rewind starter to blower housing.

NOTE: To ensure that pawls evenly engage flywheel starter cup, pull starter rope, tighten hex flange screws until snug, and then release starter rope.

9. Alternately tighten three hex flange screws as follows.

Rewind Starter Screws

TorqueModels

25-35 lb-in (2.8-4 N-m)130G00, 131G00, 13R200

71-89 lb-in (8-10 N-m)13U100, 13U200

10. Install air filter and air cleaner cover. See

Air Filter and Pre-Cleaner

in this section.

Clean/Replace

Clean/Replace Air Filter and Pre-Cleaner

NOTE: Starting or running the engine with the air filter or

air cleaner assembly removed can cause engine damage.

Refer to one of the following configurations:

• Dual Element Oval Air Filter

• Oil Bath Air Filter

• Foam Low Mount Air Filter

• Foam Large Panel Air Filter

• Paper Air Filter

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Dual Element Oval Air Filter

1. See Figure 4. Remove knob (A) to release air cleaner cover (B).

2. Remove wing nut (C) to release air filter cartridge (D) with foam pre-cleaner (E).

NOTE: Exercise care to keep dust and dirt out of

carburetor. Inadequate precautions can result in engine damage.

3. Remove seal washer (F) from air cleaner base (G). Inspect seal washer for damage or general deterioration. Replace if necessary.

4. Remove foam pre-cleaner from air filter cartridge.

5. Gently tap air filter cartridge on a hard surface to loosen dirt and debris. Carefully brush and/or vacuum air filter cartridge as necessary.

10. Place air filter cartridge with foam pre-cleaner onto air cleaner base. Install wing nut, but do not over-tighten.

11. Install air cleaner cover. Install knob, but do not over-tighten.

Oil Bath Air Filter

1. See Figure 5. Remove knob (A) and flat washer (B) to release air cleaner cover (C).

NOTE: Exercise care to keep dust and dirt out of carburetor. Inadequate precautions can result in engine damage.

2. Remove foam filter (D) from air cleaner cover.

3. Gently wash foam filter in warm, soapy water. Thoroughly rinse with clean water and allow to air dry completely.

NOTE: Use of pressurized air or solvents will damage foam pre-cleaner and air filter cartridge.

6. Gently wash foam pre-cleaner in warm, soapy water. Thoroughly rinse with clean water and allow to air dry completely.

7. Carefully inspect foam pre-cleaner and air filter cartridge. Replace parts if they cannot be adequately cleaned or if any damage is observed.

8. Install foam pre-cleaner onto air filter cartridge.

9. Install seal washer onto air cleaner base.

NOTE: Use of pressurized air or solvents will damage

foam filter.

4. Carefully inspect foam filter. Replace if it cannot be adequately cleaned or if any damage is observed.

Not for

Reproduction

5. Apply a small amount of clean SAE 30 engine oil to foam filter. Gently squeeze foam filter until engine oil is evenly distributed. Squeeze foam filter in a clean cloth to remove excess oil.

6. Remove O-ring (E) and baffle screen (F) from bath bowl (G).

7. Remove bath bowl from air cleaner base (H). Empty used oil into an approved container.

8. Remove seal washer (I) from air cleaner base. Inspect seal washer for damage or general deterioration. Replace if necessary.

9. Wash bath bowl and air cleaner cover in warm, soapy water. Wipe dry with a clean cloth.

10. Install seal washer and bath bowl onto air cleaner base.

11. Add clean SAE 30 engine oil to bath bowl until level is even with horizontal line (J). Do not overfill.

12. Install baffle screen and O-ring onto bath bowl.

13. Install foam filter into air cleaner cover.

14. Install air cleaner cover.

15. Install flat washer and knob, but do not over-tighten.

16. Dispose of used oil at a proper waste disposal or recycling center.

Foam Low Mount Air Filter

1. See Figure 6. Remove two hex flange screws (A) to release air cleaner cover (B).

NOTE: Exercise care to keep dust and dirt out of carburetor. Inadequate precautions can result in engine damage.

2. Remove retainer (C) and foam filter (D) from air cleaner cover.

3. Gently wash foam filter in warm, soapy water. Thoroughly rinse with clean water. Squeeze foam filter in a clean cloth until dry.

NOTE: Use of pressurized air or solvents will damage foam filter.

4. Carefully inspect foam filter. Replace if it cannot be adequately cleaned or if any damage is observed.

5. Saturate foam filter with clean engine oil. Gently squeeze foam filter in a clean cloth to remove excess oil.

6. Install foam filter and retainer into air cleaner cover.

7. Install air cleaner cover and start two hex flange screws. Tighten screws to 9-12 lb-in (1-1.4 N-m).

Foam Large Panel Air Filter

1. See Figure 7. Disengage two retaining clips (A) to release air cleaner cover (B) and foam filter (C).

NOTE: Exercise care to keep dust and dirt out of carburetor. Inadequate precautions can result in engine damage.

2. Gently wash foam filter in warm, soapy water. Thoroughly rinse with clean water. Squeeze foam filter in a clean cloth until dry.

NOTE: Use of pressurized air or solvents will damage foam filter.

3. Carefully inspect foam filter. Replace if it cannot be adequately cleaned or if any damage is observed.

4. Saturate foam filter with clean engine oil. Gently squeeze foam filter in a clean cloth to remove excess oil.

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Reproduction

5. Install foam filter into air cleaner cover.

6. Install air cleaner cover and engage two retaining clips to secure.

Paper Air Filter

1. See Figure 8. Loosen two hex flange screws (A) to release air cleaner cover (B).

2. Remove pre-cleaner (C), if equipped, and filter (D).

3. Gently tap filter on a hard surface to loosen dirt and debris. Carefully brush and/or vacuum as necessary.

NOTE: Use of pressurized air or solvents will damage pre-cleaner and filter.

4. Gently wash pre-cleaner in warm, soapy water. Thoroughly rinse with clean water and allow to air dry completely. Do not oil pre-cleaner.

5. Carefully inspect pre-cleaner and filter. Replace parts if they cannot be adequately cleaned or if any damage is observed.

6. Install pre-cleaner and filter.

7. Install air cleaner cover and start two hex flange screws. Tighten screws to 9-12 lb-in (1-1.4 N-m).

2. Clean area around and behind muffler. Proceed as follows:

A. Remove all loose debris by hand.

B. Remove dust and dirt with a soft bristle brush and

a portable hand held vacuum.

C. Gently scrape away stubborn accumulations of dirt

and other deposits using a plastic putty knife or stiff bristle brush.

D. Apply a light solvent to bristle brush to loosen and

remove grit and oily residue, if necessary.

3. Remove three hex flange screws to release wire guard or stamped guard from muffler.

4. Inspect muffler for holes, split seams, cracked welds, loose internal parts, corrosion, and other damage.

5. Inspect muffler tube and mounting flange for cracked welds, breakage, and other damage.

6. Install three hex flange screws to fasten wire guard or stamped guard to muffler. Tighten wire guard screws to 30-50 lb-in (3.4-5.7 N-m). Tighten stamped guard screws as follows.

Muffler Stamped Guard Screws

TorqueModels

80-110 lb-in (9-12.4 N-m)130G00, 131G00, 13R200

27-44 lb-in (3-5 N-m)13U100, 13U200

Clean/Inspect Muffler and Spark Arrester

NOTE: Avoid using high pressure compressed air, which

can force dirt and debris deeper into engine cavities and crevices. Do not use a pressurized water spray as water intrusion can contaminate both oil and fuel systems and lead to corrosion.

1. Remove spark plug wire from spark plug terminal. Secure spark plug wire to prevent contact with spark plug terminal.

7. Verify that two hex nuts on muffler studs are tightened as follows.

Muffler Stud Nuts

TorqueModels

80-110 lb-in (9-12.4 N-m)130G00, 131G00, 13R200

195-266 lb-in (22-30 N-m)13U100, 13U200

8. Inspect spark arrester for dirt, debris, and carbon buildup. Proceed as follows:

A. Remove screw(s) to release spark arrester from

muffler/muffler guard. Note orientation of spark arrester before removal.

B. Remove screening element from spark arrester.

C. Gently clean screening element with a stiff bristle

brush. If carbon buildup is present, soak or spray with Carburetor Cleaner (Part No.'s 100041 or

100042). Blow dry from the inside-out with low pressure compressed air. Exercise caution to avoid bending or puncturing screening element. Replace screening element if it cannot be adequately cleaned or if any damage is observed.

D. Install screening element into spark arrester.

E. Orient spark arrester as noted before removal, and

install screw(s) to fasten to muffler/muffler guard. Tighten screw(s) as follows.

Not for

Reproduction

Stamped/Wire Guard Spark Arrester Screw(s)

TorqueModels

71-124 lb-in (8-14 N-m)130G00, 131G00, 13R200

27-44 lb-in (3-5 N-m)13U100, 13U200

NOTE: Verify that vent hole (D) of oil fill/vent plug is

facing outside.

9. Dispose of used oil at a proper waste disposal or recycling center.

NOTE: Spark arrester is installed in either the 9 o'clock or the optional 6 o'clock position.

Change 6:1 Gear Reduction Oil (If Equipped)

1. Remove spark plug wire from spark plug terminal. Secure spark plug wire to prevent unintentional contact with spark plug terminal.

2. Place engine on a flat, level surface.

3. See Figure 9. Remove oil fill/vent plug (A) with sealing washer from the gear case cover.

4. Remove oil drain plug (B) with sealing washer and drain oil into an approved container.

5. Install oil drain plug with sealing washer and tighten to 180-210 lb-in (20.3-23.7 N-m).

6. Remove oil level plug (C) with sealing washer.

7. Slowly add the appropriate oil into the oil fill hole until oil begins to run out of the oil level hole (approximately 4 ounces).

• Use SAE 80W-90 above 40° F (10° C)

• Use SAE 10W-30 below 40° F (10° C)

8. Install oil level plug with sealing washer. Install oil fill/vent plug with copper washer. Tighten each plug to

180-210 lb-in (20.3-23.7 N-m).

Clean/Gap/Replace Spark Plug

NOTE: Spark plugs have different thread lengths and heat

ranges. Always use the specified replacement spark plug or engine damage can occur.

NOTE: Some localities require use of a special resistor type spark plug to suppress ignition noise. If the engine was originally equipped with a resistor type spark plug, be sure to use the same replacement spark plug.

1. Remove spark plug wire from spark plug terminal.

2. Thoroughly clean area around spark plug to keep dirt and debris out of combustion chamber.

3. Remove spark plug from cylinder head using the 5/8 inch Spark Plug Wrench (Part No. 19576S).

4. Check condition of threads in cylinder head. If necessary, soften deposits with penetrating oil and clean out with a thread chaser.

5. Clean spark plug using a wire brush and commercial solvent. Do not bead blast spark plug. Obtain new spark plug if electrode is pitted or burned, or if porcelain is cracked.

6. See Figure 10. Using a feeler gauge, verify spark plug gap is as follows. If necessary, adjust gap by carefully bending ground electrode.

Spark Plug GapModels

0.027-0.033 in (0.69-0.83 mm)130G00, 131G00, 13R200

0.028-0.035 in (0.70-0.90 mm)13U100, 13U200

7. Finger tighten spark plug into cylinder head, and then tighten as follows.

Spark Plug

TorqueModels

140-200 lb-in (15.8-22.6 N-m)130G00, 131G00, 13R200

230-319 lb-in (26-36 N-m)13U100, 13U200

Not for

Reproduction

8. Install spark plug wire onto spark plug terminal.

Clean/Replace In-Tank Fuel Filter

1. Start and run engine until fuel tank is empty.

2. See Figure 11. Remove spark plug wire from spark plug terminal (A). Secure spark plug wire to prevent unintentional contact with spark plug terminal.

3. Remove air cleaner cover and air filter (B). See

Clean/Replace Air Filter and Pre-Cleaner

4. Remove plastic knob from throttle control lever.

5. If equipped, remove hex flange screw to release high oil fill tube flange from control panel trim.

6. Remove three hex flange screws (C) to release control panel trim from fuel tank. Disengage control panel trim from slot in air cleaner base.

in this section.

7. Remove two hex flange nuts (D) from fuel tank studs.

8. On opposite side of fuel tank, remove hex flange screw (E) to release fuel tank from crankcase flange.

NOTE: For best access to screw, move throttle control lever left to the FAST position and use a 8 mm socket with extension.

NOTE: Exercise care to avoid dropping screw between engine and blower housing. A dropped screw may be caught by the flywheel magnet where further disassembly would be required to retrieve it.

9. See Figure 12. Squeeze tangs and move hose clamp (F) away from fuel filter fitting (G).

10. Remove hose (H) from fuel filter fitting. For best results, use Fuel Hose Remover (Part No. 19620).

11. Using hex, remove fuel filter fitting from fuel tank.

12. Unthread fuel filter (I) and remove O-ring (J) from fuel filter fitting.

13. Inspect fuel filter for dirt and debris. Clean or replace as necessary.

14. Inspect O-ring for cuts, tears, or general deterioration. Replace as necessary.

15. Install O-ring onto fuel filter fitting. Verify O-ring is fully seated in groove.

16. Thread fuel filter into fuel filter fitting.

17. Install fuel filter fitting into fuel tank. Tighten fitting as follows.

Fuel Filter Fitting

TorqueModels

60-70 lb-in (6.8-7.9 N-m)130G00, 131G00, 13R200

62-71 lb-in (7-8 N-m)13U100, 13U200

18. Inspect hose for cuts, nicks, cracks, or general deterioration. Replace hose if necessary.

19. Place fuel tank onto engine.

20. Install hex flange screw to fasten fuel tank to crankcase flange. Tighten screw as follows.

Fuel Tank Screw

TorqueModels

75-95 lb-in (8.5-10.7 N-m)130G00, 131G00, 13R200

71-124 lb-in (8-14 N-m)13U100, 13U200

21. On opposite side, install two hex flange nuts onto fuel tank studs. Alternately tighten nuts as follows.

Fuel Tank Nuts

TorqueModels

90-110 lb-in (10.2-12.4 N-m)130G00, 131G00, 13R200

71-124 lb-in (8-14 N-m)13U100, 13U200

Not for

Reproduction

22. Install hose with clamp onto fuel filter fitting. Squeeze tangs and move hose clamp about 1/8 inch (3 mm) from end of hose with tangs pointing upward for best access.

23. Start three hex flange screws to fasten control panel trim to fuel tank. Engage end of control panel trim in slot of air cleaner base. Starting with screw above rewind starter, tighten screws to 20-40 lb-in (2.3-4.5 N-m).

24. If equipped, install hex flange screw to fasten high oil fill tube flange to control panel trim. Tighten screw to 5-15 lb-in (0.6-1.6 N-m).

25. Install plastic knob onto throttle control lever.

26. Install air filter and air cleaner cover. See

Air Filter and Pre-Cleaner

27. Install spark plug wire onto spark plug terminal.

in this section.

Clean/Replace

Clean Carburetor Sediment Bowl

WARNING

Wrap shop towel around sediment bowl to catch any fuel leakage. Gasoline is extremely flammable and highly explosive. Inadequate safety precautions can result in death or serious injury. Always observe the following precautions when working with fuel system components:

• Wear proper eye protection.

• Be sure there is no open flame or potential ignition

sources in the area.

• Keep a dry chemical fire extinguisher on hand in case of emergencies.

• Thoroughly wipe up any spilt fuel immediately.

• Collect any fuel and/or shop towels in approved

containers and dispose of properly.

1. Start and run engine until fuel tank is empty.

2. See Figure 13. Position fuel valve (A) to OFF.

3. Remove spark plug wire from spark plug terminal. Secure spark plug wire to prevent unintentional contact with spark plug terminal.

4. Remove sediment bowl (B) with O-ring (C) from carburetor body.

5. Thoroughly clean sediment bowl of sediment, gum or varnish deposits. Use Carburetor Cleaner (Part No.'s 100041 or 100042), if necessary.

6. Inspect O-ring for cuts, tears, or general deterioration. Replace as necessary.

7. Install sediment bowl with O-ring. Tighten sediment bowl to 49-80 lb-in (5.5-9 N-m).

8. Install spark plug wire onto spark plug terminal.

Clean Air Cooling System

NOTE: Avoid using high pressure compressed air, which

can force dirt and debris deeper into engine cavities and crevices. Do not use a pressurized water spray as water intrusion can contaminate both oil and fuel systems and lead to corrosion.

1. Remove spark plug wire from spark plug terminal. Secure spark plug wire to prevent unintentional contact with spark plug terminal.

2. Remove three hex flange screws to release rewind starter from blower housing.

NOTE: Note orientation of the rewind starter before removal.

3. Remove three hex flange screws to release cylinder heat shield from crankcase and cylinder head.

4. Clean cylinder cooling fins, the inside of the rewind starter, and the flywheel fan as follows:

A. Remove all loose debris by hand.

B. Remove dust and dirt with a soft bristle brush and

a portable hand held vacuum.

Not for

Reproduction

C. Gently scrape away stubborn accumulations of dirt

and other deposits using a plastic putty knife or stiff bristle brush.

D. Apply a light solvent to bristle brush to loosen and

remove grit and oily residue, if necessary.

5. Install three hex flange screws to fasten cylinder heat shield to crankcase and cylinder head.

NOTE: Hex flange screw to engine base captures both heat shield and blower housing.

6. Orient rewind starter as noted before removal.

NOTE: Rewind starter may be installed in the 2 o'clock, 8 o'clock, 10 o'clock, or 12 o'clock positions.

7. Loosely install three hex flange screws to fasten rewind starter to blower housing.

NOTE: To ensure that pawls evenly engage flywheel starter cup, pull starter rope, tighten hex flange screws until snug, and then release starter rope.

8. Alternately tighten three hex flange screws as follows.

Cylinder Heat Shield Screws

TorqueModels

40-60 lb-in (4.5-6.8 N-m)130G00, 131G00, 13R200

71-124 lb-in (8-14 N-m)13U100, 13U200

Rewind Starter Screws

TorqueModels

25-35 lb-in (2.8-4 N-m)130G00, 131G00, 13R200

71-89 lb-in (8-10 N-m)13U100, 13U200

Check/Adjust Valve Clearance

NOTE: For best results, check valve clearance with the

engine cold.

1. Remove spark plug wire from spark plug terminal.

2. Thoroughly clean area around spark plug to keep dust and dirt out of the combustion chamber.

3. Remove spark plug from cylinder head using the 5/8 inch Spark Plug Wrench (Part No. 19576S).

4. Remove four hex flange screws to release valve cover.

5. Move piston 1/4 inch (6 mm) past Top Dead Center (TDC) of the compression stroke. Proceed as follows:

A. See Figure 14. While rotating flywheel end of

crankshaft (A) by hand in the direction of engine rotation, watch the rocker arms to determine the action of the valves. After the exhaust valve closes, the intake valve begins to open.

B. When the intake valve closes (so that both valves

are closed with the rocker arms loose), insert a wooden dowel (B) through the spark plug hole until seated at the top of the piston (C).

C. Rotate engine in the same direction until the piston

pushes the wooden dowel to its highest point. This is TDC of the compression stroke.

D. Place a mark on the wooden dowel that is even

with the machined surface at the top of the spark plug hole. Make a second mark 1/4 inch (6 mm) above the first.

E. Rotate engine in the same direction until the second

mark on the wooden dowel is even with the machined surface at the top of the spark plug hole. Remove wooden dowel.

6. Insert feeler gauge between rocker arm and exhaust valve stem (D). Verify that exhaust valve clearance is as follows.

Exhaust Valve ClearanceModels

0.006-0.008 in (0.15-0.20 mm)130G00, 131G00, 13R200

0.005-0.007 in (0.13-0.18 mm)13U100, 13U200

Not for

Reproduction

7. If adjustment is necessary, proceed as follows:

A. Loosen locknut (E) and turn rocker ball nut (F) as

necessary.

B. Holding rocker ball nut to prevent rotation, tighten

locknut as follows.

Rocker Ball Locknut

TorqueModels

60-80 lb-in (6.8-9 N-m)130G00, 131G00,

13R200

71-124 lb-in (8-14 N-m)13U100, 13U200

C. Check valve clearance again to verify that rocker

ball did not move when locknut was tightened.

8. Insert feeler gauge between rocker arm and intake valve stem. Verify that intake valve clearance is as follows. If adjustment is necessary, see step 7.

Intake Valve ClearanceModels

0.004-0.006 in (0.10-0.15 mm)130G00, 131G00, 13R200

0.005-0.007 in (0.13-0.18 mm)13U100, 13U200

9. Remove old gasket material from valve cover and cylinder head flanges. Gasket material left on sealing surfaces will cause leaks.

10. Install new valve cover gasket into valve cover.

11. Start four hex flange screws to fasten valve cover to cylinder head. Using a crosswise pattern. alternately tighten screws as follows.

Valve Cover Screws

TorqueModels

70-90 lb-in (7.9-10.2 N-m)130G00, 131G00, 13R200

71-124 lb-in (8-14 N-m)13U100, 13U200

12. Install spark plug into cylinder head and finger tighten until snug. Tighten spark plug as follows.

Spark Plug

TorqueModels

140-200 lb-in (15.8-22.6 N-m)130G00, 131G00, 13R200

230-319 lb-in (26-36 N-m)13U100, 13U200

13. Install spark plug wire onto spark plug terminal.

Not for

Reproduction

Not for

Reproduction

SECTION 3 – TROUBLESHOOTING/SPECIAL TOOLS

TROUBLESHOOTING - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 22

Check Ignition - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 22

Check Carburetion - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 23

Check Compression - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 23

Check Low Oil Sensor System - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 24

Check Breather Valve - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 24

SPECIAL TOOLS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 25

Not for

Reproduction

TROUBLESHOOTING

General Complaints

Most complaints concerning engine operation include one or more of the following:

• Will not start

• Hard starting

• Lack of power

• Runs rough

• Vibration

• Overheating

• High oil consumption

Equipment Check

What often appears to be a problem with the engine may actually be the result of faulty equipment.

No Start or Hard Start

• Loose belt or blade

• Cranking under load

• Misadjusted controls

• Improperly operating low oil sensor system

Engine Will Not Stop

• Equipment stop switch not functioning

• Engine ground wire damaged or disconnected

Check Ignition

1. Move to step 2 if engine does not start. If engine runs, but misses, move to step 9.

Engine Does Not Start

2. Verify that engine oil level is within the cross hatch pattern on the dipstick.

3. Obtain Ignition Tester (Part No. 19368).

4. Remove spark plug wire from spark plug terminal.

5. See Figure 15. Install free end of spark plug wire onto inline tester prong. Install tester alligator clip onto good engine ground.

WARNING

Be sure there is no fuel or fuel vapors present which, if spark ignited, can cause a fire or explosion resulting in death or serious injury.

6. Move throttle control lever to FAST.

7. Pull rewind starter rope (or activate electric starter, if equipped). If spark jumps the tester gap, the ignition system is functioning satisfactorily.

8. If spark is not present, move to step 15.

Vibration

• Bent cutter blades

• Loose spindles and couplings

• Bent/broken deck or weldments

• Bent crankshaft

• Loose equipment mounting bolts

• Damaged or worn belts and pulleys

• Out of balance impeller

Power Loss

• Bind or drag in moving parts of equipment

• Grass build-up under deck

• No lubrication in equipment gear box

• Excessive belt tension

Systems Check

Once equipment sources are ruled out, most symptoms can be traced to one or more of the following. Perform these checks in the order listed.

1. Ignition

2. Carburetion

3. Compression

Engine Runs But Misses

9. Obtain Ignition Tester (Part No. 19368).

10. Remove spark plug wire from spark plug terminal.

11. See Figure 16. Install free end of spark plug wire onto inline tester prong. Install tester alligator clip onto spark plug terminal.

Not for

Reproduction

WARNING

Be sure there is no fuel or fuel vapors present which, if spark ignited, can cause a fire or explosion resulting in death or serious injury.

12. Move throttle control lever to FAST.

13. Pull rewind starter rope (or activate electric starter, if equipped). If spark jumps the tester gap, install a new spark plug.

14. If spark is not present, move to step 15.

• Plugged air cleaner

• Fouled spark plug

6. A dry spark plug may indicate:

• Leaking carburetor or intake manifold gaskets

• Gummy or dirty carburetor, fuel filter, fuel lines, or fuel tank

• Carburetor float needle valve stuck closed

NOTE: To determine if the fuel is getting to the combustion chamber through the carburetor, remove the spark plug and pour a small quantity of gasoline through the spark plug hole. Install the spark plug and crank the engine. If the engine fires a few times and then stops, look for the same conditions as those listed for a dry spark plug.

Check Compression

Engine Does Not Start

1. Obtain Leakdown Tester (Part No. 19545).

2. Follow the instructions provided with the tester to check the sealing capabilities of compression components.

15. If spark is not present, look for:

• Improperly operating low oil sensor system

• Shorted equipment or engine stop switch wire

• Incorrect armature air gap

• Armature failure

Check Carburetion

1. Verify that fuel tank has an ample supply of fresh, clean gasoline.

2. Verify that fuel valve is positioned to ON, if equipped, and that fuel flows freely through the fuel line. If fuel flow is slow or fails to flow, check for plugged fuel cap vent, fuel line restriction, or plugged fuel filter.

3. Verify that throttle and choke controls are clean and properly adjusted.

4. If engine cranks, but will not start, remove and inspect the spark plug.

5. A wet spark plug may indicate:

NOTE: Any air leaks at the tester connections and fittings will adversely affect test results.

3. The sound of air flow:

• between the cylinder and cylinder head indicates the cylinder head gasket is leaking.

• from the carburetor indicates air is leaking past the intake valve and valve seat.

• from the exhaust system indicates air is leaking past the exhaust valve and valve seat.

• from the breather tube or oil fill dipstick tube indicates air is leaking past the piston rings.

4. The likely causes of poor compression are:

• Loose cylinder head screws

• Damaged cylinder head gasket

• Burned valves, burned valve seats, and/or loose valve seats

• Insufficient tappet clearance

• Warped cylinder head

• Warped valve stems

• Worn cylinder bore and/or piston rings

• Broken connecting rod

• Over choking

• Excessively rich fuel mixture

• Water in fuel

• Carburetor float needle valve stuck open

Not for

Reproduction

Check Low Oil Sensor System

Engine Does Not Start

1. Verify that engine oil level is within the cross hatch pattern on the dipstick.

2. See Figure 17. If engine oil level is satisfactory, disconnect one-place wire connector between oil sensor module and oil sensor in crankcase (A).

3. Obtain Digital Multimeter (Part No. 19602), and set to read ohms (B).

4. Insert RED meter test lead into V Ω receptacle, and BLACK meter test lead into COM receptacle (C).

5. Connect red meter test lead to oil sensor wire (D), and black meter test lead to engine base (E).

6. Measure resistance. Replace sensor in crankcase if continuity is obtained. Proceed to next step if meter reads infinity.

7. See Figure 18. Connect one-place wire connector between oil sensor module and oil sensor in crankcase (F).

8. Disconnect one-place wire connector between oil sensor module and armature coil (G).

9. Start engine. Verify that oil sensor module wire is not touching ground.

10. Replace oil sensor module if engine starts. If engine does not start, check oil sensor module wiring for shorts to ground.

Check Breather Valve

Engine Does Not Start

1. See Figure 19. Gently blow air into breather hose (A) to verify that there is no air flow through valve.

2. Apply vacuum or draw air out through breather hose to verify that air flows freely through valve.

3. If air flow has no resistance when blowing or is restricted under vacuum, the breather valve (B) is faulty. Replace the valve cover (C).

+ 82 hidden pages

Briggs & Stratton 130G00, 131G00, 13R200, 13U100, 13U200 Repair Manual

Specifications and Main Features

Frequently Asked Questions

User Manual