Oil Recommendations (see fig. )

Engine shipped from Briggs & Stratton without oil. Before starting engine, fill with oil. Do not over0fill.

Use a high quality detergent oil classified •For Service SF, SG,

SH, SJ" or higher such as Briggs & Stratton 30W, Part Number 100005 (20 oz.) or 100028 (48 oz.). Use no special additives with recommended oils. Do not mix oil with gasoline.

Choose the SAE viscosity grade of oil from this chart that matches the starting temperature anticipated before the next

oil change. (see fig. )

Note: Synthetic oil meeting ILSAC GF22, API certification mark and API service symbol (shown at left) with •SJ/CF ENERGY CON2 SERVING" or higher, is an acceptable oil at all

temperatures. Use of synthetic oil does not alter required oil change intervals.

*Air cooled engines run hotter than automotive engines.

The use of non2synthetic multi2viscosity oils (5W230, 10W230, etc.) in temperatures above 40° F (4° C) will result in higher than normal oil consumption. When using a multi2viscosity oil, check oil level more frequently.

**SAE 30 oil, if used below 40° F (4° C), will result in hard starting and possible engine bore damage due to inadequate lubrication.

Check oil level (see fig. )

Oil capacity: approximately 121/2 quarts (48 ounces or 1.6 liters) when changing oil and filter. (Oil capacity will be greater if engine is equipped with remote oil filter.)

Oil checking procedure: before starting engine, place

engine level and clean around oil fill Ê. Remove dipstick Ë, wipe with clean cloth, insert and tighten down again. Remove

dipstick and check oil level. Oil should be at FULL mark Ì. If oil is required, add slowly. Tighten dipstick firmly before starting engine.

Oil filling procedure: first add 1 quart (32 ounces or 1 liter). Start and run engine at idle for 30 seconds. Shut engine off and wait 30 seconds. Then add more oil slowly to bring level to Full mark on dipstick. Check for oil leaks. Tighten dipstick firmly before starting engine.

Fuel Recommendations

Use clean, fresh, lead2free gasoline with a minimum of 85 octane. Leaded gasoline may be used if it is commercially available and if unleaded is unavailable. Purchase fuel in quantity that can be used within 30 days. See Storage.

In U.S.A. leaded gasoline may not be used. Some fuels, called oxygenated or reformulated gasolines, are gasolines blended with alcohols or ethers. Excessive amounts of these blends can damage the fuel system or cause performance problems. If any undesirable operating symptoms occur, use gasoline with a lower percentage of alcohol or ether.

This engine is certified to operate on gasoline. Exhaust Emission Control System: EM (Engine Modifications).

Do not use gasoline which contains Methanol. Do not mix oil with gasoline.

For engine protection, we recommend using Briggs & Stratton Fuel Stabilizer available from an Authorized Briggs & Stratton Service Dealer.

Check fuel level.

Before refueling, allow engine to cool 2 minutes.

Clean around fuel fill before removing cap to refuel. Remove cap. Fill tank to approximately 121/2 inches below top of neck to allow for fuel expansion. Be careful not to overfill.

Starting (see figs. )
ALWAYS KEEP HANDS AND FEET

CLEAR OF EQUIPMENT MOVING PARTS.

Do not use a pressurized starting fluid.

Vapors are flammable.

Start, store and fuel lawn mower in level position. Start lawn mower on hard surface or over previously cut grass.

Check oil level.Open fuel shut2off valve, if equipped.
Before starting engine (see fig. )

If engine runs low on oil, an oil pressure switch (if engine is equipped) will either activate a warning device or stop the engine. (Read the operating instructions supplied by the equipment manufacturer to determine which way your engine is equipped.) See Oil pressure on next page.

1.Open fuel shut2off valve, if equipped.2.Move choke control to CHOKE position Ê.

Note: If engine does not start, remove air cleaner to check choke. Choke must fully close. If not, see Adjustments.

3.Move throttle control Ë to FAST position.4.Push rocker switch Ìto I position.
Rewind starter, if equipped (see fig. )

Grasp rope handle and pull slowly until

resistance is felt. Then pull cord rapidly to overcome compression, prevent kickback and start engine. Repeat if necessary with choke in RUN

position throttle in FAST. When engine starts, operate in FAST.

Electric starter (see fig. )

On engines equipped with 12 volt starting systems, turn key to START position Ê or press button Ë. Repeat if necessary with choke off and throttle control in FAST position. Operate engine with choke off and throttle in FAST position.

Note: If equipment manufacturer has supplied battery, charge it before trying to start engine, as equipment manufac2 turer recommends. Use short starting cycles (15 secs. per min.) to prolong starter life. Extended cranking can damage starter motor.

CAUTION:If engine is equipped with batteryforelectricstarter, do not operate engine with battery disconnected.

Stopping (see fig. )

Do not move choke control to CHOKE to stop engine. Backfire or engine damage may occur. Move throttle control to IDLE or

SLOW position, then to STOP Ê, push rocker switch to 0 position or turn key to OFF Ë.

Always remove key from switch when equipment is not in use or left unattended.

When engine or equipment is trans2 ported, close fuel shut2off valve, if equipped, to prevent fuel leakage.

Adjustments (see fig. )

To prevent acciden2tal starting, remove

spark plug wire Ê and ground it before adjusting, and dis2

connect battery at negative terminal, if equipped.
Choke control adjustments

Remove air cleaner. Move choke control to CHOKE position. Carburetor choke valve Ëshould be completely closed. If not,

loosen casing clamp screw Ìand pull casing and wire Íin direction of arrow to end of travel. Tighten casing clamp screw. Replace air cleaner.

Throttle control adjustments

Remove air cleaner. Move throttle control to FAST position. Swivel Î should be against throttle stop Ï. If not, loosen

casing clamp screw Ð. Move casing and wire Ñin direction shown by arrow until swivel is against throttle stop. Tighten casing clamp screw. Replace air cleaner.

Check operation of controls. Readjust if necessary.
Carburetor adjustments

The manufacturer of the equipment on which this engine is installed specifies top speed at which the engine will be operated. DO NOT EXCEED this speed.

See an Authorized Briggs & Stratton Dealer for carburetor adjustment.

Start engine and warm up approximately 5 minutes before adjusting. With engine running, place throttle control in SLOW position. Rotate carburetor throttle lever against the idle speed screw and hold it. Turn idle speed screw to obtain 1400 rpm (1200 rpm on two barrel carburetor). While still holding carburetor throttle lever against idle speed screw, turn idle mixture valve with limiter cap screw midway between limits. DO NOT remove limiter cap. DO NOT force beyond limit. On twin barrel carburetor, set cylinder #1 idle mixture valve midway between limits. Then set cylinder #2 idle mixture valve midway between limits while holding carburetor throttle lever against idle speed screw.

CARBURETOR THROTTLE LEVER

IDLE

SPEED SCREW

CYL # 1

IDLE MIX-

TURE

VALVES WITH

LIMITER

CAPS

CYL # 2

Single barrel carburetor

Two barrel carburetor

Readjust the idle speed to 1200 rpm, if governed idle spring is red, or 900 rpm, if governed idle spring is white as illustrated below. Release carburetor throttle lever. Move throttle control to FAST position. Engine should accelerate smoothly. If it does not, readjust idle mixture valve(s) slightly counterclockwise.

CASING

CLAMP

GOVERNED

IDLE SPRING

(RED OR WHITE)

Note:Engines operated at approximately 3000 to 5000 feet (900 to 1500 meters) above sea level may require a high altitude carburetor main jet. If erratic performance is observed, contact a Briggs & Stratton Authorized Service Dealer for a high altitude carburetor main jet.

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