Briggs&Stratton 400000: Not for Reproduction

Determine The Starting System

Emissions Control

Before starting the engine, you must determine the type of starting system that is on your

Maintenance, replacement, or repair of the emissions control devices and systems

engine. Your engine will have one of the following types.

may be performed by any non-road engine repair establishment or individual.

However, to obtain “no charge” emissions control service, the work must be performed

• Electronic Fuel Management System: This features an Electronic Control Unit that

by a factory authorized dealer. See the Emissions Warranty.

monitors engine and temperature conditions. It does not have a manual choke or a

primer.

• Choke System: This features a choke to be used for starting in cool temperatures.

WARNING

Some models will have a separate choke control while others will have a

Unintentional sparking can result in fire or electric shock.

combination choke/throttle control. This type does not have a primer.

Unintentional start-up can result in entanglement, traumatic

To start your engine, follow t he instructions for your type of starting system.

amputation, or laceration.

Note: Some engines and equipment have remote controls. See the equipment manual

Fire hazard

for location and operation of remote controls.

Electronic Fuel Management System - Figure

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Before performing adjustments or repairs:

1. Check the oil level. See the How To Check/Add Oil section.

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

2. Make sure equipment drive controls, if equipped, are disengaged.

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

3. Turn the fuel shut-off valve (A), if equipped, to the on position (Figure 4).

• Use only c orrect tools.

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

4. Move the throttle control (B)tothefast

position. Operate the engine in the fast

speed.

position.

• Replacement parts must be the s ame and installed in the same position as the

original parts.

5. Turn the electric start switch (D) to the on/start position (Figure 4).

• Do not strike the flywheel with a hammer or hard object because the flywheel

NOTE: If the engine does not start after repeated attempts, go to

may later shatter during operation.

BRIGGSandSTRATTON.COM or call 1-800-233-3723 (in USA).

When testing for spark:

NOTICE: To extend the life of t he starter, use short starting cycles (five seconds

• Use approved spark plug tester.

maximum). Wait one minute between starting cycles.

• Do not check for spark with spark plug removed.

Choke System - Figure

4

Maintenance Chart

1. Check the oil level. See the How To Check/Add Oil section.

First 5 Hours

2. Make sure equipment drive controls, if equipped, are disengaged.

3. Turn the fuel shut-off valve (A), if equipped, to the on position (Figure 4).

• Change oil

4. Move the throttle control (B)tothefast

position. Operate the engine in the fast

Every8HoursorDaily

position.

• Check engine oil level

5. Move the choke control (C), or the combination choke/throttle lever, to the choke

• Clean area around muffler and controls

position.

• Clean finger guard/rotating screen

Note: Choke is usually unnecessary when restarting a warm engine.

Every 25 Hours or Annually

6. Turn the electric start switch (D) to the on/start position (Figure 4).

• Clean air filter *

NOTE: If the engine does not start after repeated attempts, go to

BRIGGSandSTRATTON.COM or call 1-800-233-3723 (in USA).

• Clean pre-cleaner *

NOTICE: To extend the life of t he starter, use short starting cycles (five seconds

Every 50 Hours or Annually

maximum). Wait one minute between starting cycles.

• Change engine oil

7. As the engine warms up, move the choke control (C)totherun

position.

• Replace oil filter (if equipped)

• Check muffler and spark arrester

How To Stop The Engine - Figure

4

Annually

• Replace air filter

• Replace pre-cleaner

WARNING

• Replace spark plugs

Fuel and its vapors are extremely flammable and explosive.

• Clean air cooling system *

Fire or explosion can cause severe burns or death.

• Replace fuel filter

• Check valve clearance **

* In dusty conditions or when airborne debris is present, clean more often.

• Do not choke the carburetor to stop engine.

** Not required unless engine performance problems are noted.

1. Move the throttle control to the slow position. Turn the key switch (D) to the off

Electronic Fuel Management System

position (Figure 4). Remove the key and keep in a safe place out of the reach of

The Electronic Fuel Management System monitors engine temperature, engine speed,

children.

and battery voltage to adjust the choke during engine starting and warm up. There are no

2. After the engine stops, turn the fuel shut-off valve (A), if equipped, to the closed

adjustments on the system. If starting or operation problems occur, contact an

position.

Authorized Briggs & Stratton Dealer.

NOTICE: Make sure to follow the steps below or the Electronic Fuel Management

System could be damaged.

• Never start the engine if the battery cables are loose.

• Turn the key to the off position before di sconnecting, removing and/or installing t he

Maintenance

battery.

Use only original equipment replacement parts. Other parts may not perform as

• Never use a battery charger to start the engine.

well, may damage the unit, and may result in injury. In addition, use of other parts

• Never disconnect the battery cables while the engine is running.

may void your warranty.

• When connecting the battery cables, first connect t he positive (+) cable and then

We recommend that you see any Briggs & Stratton Authorized Dealer for all

connect the negative (--) cable to the battery.

maintenance and service of the engine and engine parts.

• When charging the battery, turn the ignition switch to the off position and disconnect

NOTICE: All the components used to build this engine must remain in place for proper

the negative (--) battery cable from the battery.

operation.

• Do not spray water directly on the Electronic Control Unit.

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