Briggs & Stratton 146457 User's Manual
Contents
1. o FILL IN THE REQUIRED INFORMATION FOR YOUR RECORD sos See Decal on Blower Housing for Model Type and Code Number Engine Model No festa a ng Type No __ Code No Dealer Purchased From __ _ Date _ Type of Equipment _ Name or Tr ademark of Equipment Manufacturer te E es ee EE E BRIGGS amp STRATTON ENGINES ARE MADE UNDER ONE OR MORE OF THE FOLLOWING PATENTS 2 669 322 2 796 483 3 114 851 3 149 618 3 194 224 3 252 449 DESIGN 2 693 789 2 999 491 3 118 433 3 168 094 3 236 937 3 276 439 D 191 806 D 196 017 0 197 175 0 213 476 2 693 791 2 999 862 3 144 097 3 168 936 3 242 741 3 378 099 OTHER PATENTS PENDING i a E ANS 3 415 2372. APPLICATION extension cord is used it should also have three prong J and three hole plugs If the outlet or receptacle is the two hole type an adapter must be used To get the _ proper grounding fasten the ground lead on the adapter to something electrically grounded such as the metal ee eae box on the end of a Sounded metal conduit E a 3 PRONG PLUG aa oe E PR T FORM NO 270367 7 E A eee om an ae apoio ent eerie rng speci iaa sae emer mangement an Ta eap pae met niet cme a e aS ee eaae aea aai m de a Aar i mom ee pageant e one a apa EA anan Tat ce T AE ceca fe anaes aaa Laan at aE abies ag oea L Ga tae Doac TaN ag he ig over choked Pt cpt STARTING contd SPECIAL LOW TEMPERATURE STARTING PROCEDURE 1 Turn needle valve on carburetor 1 8 turn counterclock wise from normal summer adjustment Note If fuel drips out of carburetor while trying to start engine the engine Puli starter several times or push starter button with choke open 2 Be sure to use the proper weight of oil for the air temperature expected 3 Disconnect all external loads Any V belt drives must be removed or loosened so that the belts are standing still for satisfactory operation below freezing Starte motor and battery are designed to start the engine only 4 Keep battery and engine warm if possible is not possible to keep the entire unit warm there is a big advantage in keeping the battery warm until it is required for starting A wa
3. AN transportation charges on parts submitted for replacement under this Warranty must be borne by 2 purchaser gt There is no other Warranty express or implied Briggs amp Stratton Corp shall in no event be liable for consequential damages BRIGGS amp STRATTON CORP g V R SHIELY PRESIDENT _ A J ieee NA AEAN ANEN ENA EENEN NENDENI EA A N A AAAA ANAA t twk Ce fp fe Cw fey fed fe fas fey AOK im a gt iw Cw fee wy fw fod i fed fe fe fa wp fed fwd os fey fe fed fe a Cor te ed Cod fap fed for Coy ws Cad Coy Cos Coy fei Cay ed fe ied CE fe fable GA 4 POF a a a FD OF ST TF fe ot a SA NOTE The Briggs amp Stratton Engine Warranty does not cover breakage of parts or damage to parts due to abuse or failure to follow the recommended maintenance procedures The warranty also excludes any accessories controls or equipment which are not manufactured by Briggs amp Stratton Corporation If warranty service is needed contact your nearest Authorized Service Center For Prompt Attention your center will need to know the engine model type and code number the trouble experienced and the total number of hours the engine has run If you differ with the decision of a Service Center on a warranty claim ask the Service Center to submit all supporting facts to the Factory for review If the Factory decides that your claim is justified you will be fully reimbursed for those items accepted as defective
4. Briggs amp Stratton OPERATING AND MAINTENANCE INSTRUCTIONS MODELS 146400 to 146457 170400 to 170457 190400 to 190457 IN THE INTEREST OF SAFETY NOT RUN ENGINE AT EXCESSIVE SPEEDS jperating an engine at excessive aeia increases the hazard of personal injury DO NOT TAMPER WITH PARTS WHICH MAY INCREASE THE GOVERNED SPEED For rotary lawnmower safety USA Standard Safety Specifications for Power Lawn Mowers specify a maximum blade tip speed of 19 000 feet per minute primarily to reduce the hazard from thrown objects Rotary lawnmower manufacturers select the governed top speed of the engine based on the length and design of the cutter blade and design of other mower parts All rotary lawnmowers should be checked for conformance to the USA Standard Safety Specifications for Power Lawn Mowers on blade tip speed if the engine is repaired or replaced or if mower parts are changed Dirt and grass clippings or other debris in cooling fins or governor parts can Praet engine speed See cleaning instruc tions in Paecton 3 i CAUTION TO PREVENT ACCIDENTAL STARTING always remove the spark plug before working on the engine or equipment driven by the engine or remove cable from spark plug and insert terminal in V notch in cylinder head cover DO NOT RUN THE ENGINE IN AN ENCLOSED AREA Exhaust gases contain carbon monoxide an odorless and deadly poison DO NOT FILL GASOLINE TANK WHILE ENGINE IS RUNNING Spilling gasoline o
5. ark plug pour one ounce 2 or 3 table Spark Plug Gap tote eee ee ww 030 Spoons of SAE 30 oil into cylinder and crank slow s Ignition Point Ga E as a E Wome 74 ata ly to distribute oil Replace spark plug vost Intake Valve Clearance ine el wats 006 007 e Clean dirt and chaff from cylinder head fins and ai Exhaust Val Ive Ch learance ees oe 809 01197 0 20 blower oe Aa Section an Section SERVICE amp REPAIR INFORMATION _ If service or repair is needed contact an Authorized g ly and efficiently the Service Center will need the model type and code number on your engine See Section Fr ne Each Authorized Service Center carries a stock of Original Briggs amp Stratton repair parts and is equipped with special service tools Trained mechanics assure expert repair service on all Briggs amp Stratton engines Your nearest service center is listed in the gt Yellow Pages under Engines Gasoline or Gasoline Engines He is one ers available to serve Section WARRANTY SAVE THIS SECTION FOR YOUR RECORD RIGGS amp STRATTON ENGINE WARRANTY For ONE YEAR from purchase date Briggs amp Stratton Corp will replace for the original purchaser FREE OF CHARGE any part or parts found upon examination byany Factory Authorized Service Center or by the Factory at Milwaukee Wisconsin to be DEFECTIVE IN MATERIAL AND OR WORKMANSHIP ag
6. e at idle position and set idle speed adjusting screw until fast idle obtained 1750 RPM Hold throttle in idle position and turn idle valve in lean and out rich until engine idie smoothly Then reset idle speed adjusting screw so that engine idles at 1750 RPM Release throttle engine should accelerate without hesitation or sputtering If engine does not accelerate properly the carburetor should _ be re adjusted to a slightly richer mixture 4 ADJUSTMENTS ir A Move remote control to Stop position Lever y 808 Poo Section ADJUSTMENTS cont d a E CARBURETOR CONTROL a Proper choke er stop switch operation is doaa upon proper adjustment of remote control on the pow To Check Operation of Choke A Matic Controls _a Remove air cleaner b Move remote control lever to Choke EEA The carburetor choke should be closed should make cies contact with hice switch gs To Adjust e Place remote eat ees on equipment in FAST high speed position Loosen control casing clamp screw BS Move control casing A and wire until lever D touches choke operating link at C Tighten casing clamp screw B Replace air cleaner _ SPEED CONTROL ADJUSTMENTS The recommended operating speed range is 1800 to 3600 RPM The standard speed setting no load is 3600 RPM Idle speed is 1750 RPM Refer to illustration Select the control on yo
7. gular automotive fuels and con _ stant speed and toad operation often result in a gradual build up of tetraethy lead deposits in the combustion ee chamber Remove cylinder head Scrape and wire brush the lead and carbon deposits from cylinder head top of J Now open needle valve 1 1 8 turns counterclockwise k piston and around valves Use a soft brush or compressed air to remove loose deposits Reassemble cylinder head gasket cover and turn down screws finger tight Use the three longer screws around _ the exhaust valve Using a socket wrench with a 6 handle turn all screws an additional 74 turn 150 175 T BE SURE TO TIGHTEN head mounting screws ina ieee sequence Seciion ADJUSTMENTS CARBURETOR ADJUSTMENTS a Ge SEED AONSTIG mg a es IDLE VALVE Minor carburetor adjustment may be required to com a pensate for differences in fuel temperature altitude and load To Adjust Carburetor urn needle valve clockwise until it just closes Caution Valve may be damaged by turning it in too far Close idle valve in same manner and open 1 1 8 turns This initial adjustment will permit the engine to be started and warmed up prior to final adjustment Final Adjustment Turn needle valve in until engine misses lean mixture then turn it out past smooth operating point until engine runs unevenly rich mixture Now turn needle valve to the mid point between rich and lean z the engine runs smoothly Hold throttl
8. n a hot engine may cause a fire or explosion Tii BEFORE STARTI N G THE EQUIPMENT THIS ENGINE POWERS 1 ELL CRANKCASE WITH OIL Use a high quality de 1 Enc oil classified For Service SC orSD or MS Nothing should be added to the recommended oil Summer Winter Above 40 F Under 40 F Use SAE 30 Use SAE 5W 20 or SAE 5W 30 If not available If not available a Use SAE 10W 30 Use SAE 10W or SAE 10W 30 or SAE 10W 40 Below 0 F Use SAE 10W or SAE 10W 30 Diluted 10 with Kerosene DIRECTIONS rA the engine level FILL THE OIL SUMP TO OVERFLOWING or to the FULL mark on dip stick Pour slowly Capacity 2 3 4 pints EXTENDED OIL FILL Optional Remove cap and dip stick and fill to full mark on dipstick When checking oil level push dipstick assembly firmly but slowly until cap bottoms on tube Do not overfill Dipstick assem bly must be pushed fully into tube at all times when engine is operating FILL FUEL TANK Use clean fresh lead free or leaded regular grade automotive gasoline Fill tank completely es DO NOT MIX OIL WITH GASOLINE OIL LEVEL AL ee OL DRAIN PLUG OW FILLER PLUG MLW AUREE Wt o BRIGGS a a STRATTON FORM NO 270367 71 a PRINTED IN U S A BRIGGS amp STRATTON CORP Milwaukee Wisconsin 53201 ie SELLE BEE EELS S gs RR DER aN aE OR ELE LB ET AIEEE EEE ule BG BA er alten wt FRA clan ns nap nt eae nr AEE ht ane i
9. nce I im gn etna ten tana a A a AR on a lio ats mtn a aE STA acim ain ae en ae be eae anaa ten ans A mee a Seat RCE A te ee sean lat ME eee tee ine ew ean paiement einen E E tenets sot jam oct Coane secon STARTING R A ain sad sci IS AWAY FROM ae PLUG sPaRk PLUG STOP SWITCH N CHOKE THE CARBURETOR a Manual Type Move lever in direction of arrow to fully closed choke position Set governor control in normal operating po sition b Choke A Matic Move lever to Full Choke or Start position lt o Note This should fully close choke on carburetor If it does not remote control must be re adjusted See _ Choke A Matic Carburetor Adjustments Section 4 _ Note A warm engine requires less choking than a es coll ongina di Rewind Starter Grasp starter grip as illustrated and oul out cord two to three feet Repeat if necessary with choke opened slightly When ane starts open choke gradually b Rope Starter Wind the starter rope around the pulley in direction shown by arrow Pull the rope with a quick full arm stroke Repeat if necessary with choke opened sl ightly When engine starts open choke grad ee ually Elec tric Starter a Press starter button on powered equipment When engine starts open choke gradually CAUTION The 110 volt electric starter is equipped ADAPTER ON EN 110 VOLT _ with a three prong plug for your safety If a longer
10. r cup ce 4 A Wash foam element in kerosene or liquid deter gent and water to remove dirt B Wrap foam in cloth and squeeze dry C Saturate foam in engine oil Squeeze to remove excess Oil Be ee es D Put air cleaner cup inside element Be sure sealing lip is over end of cup top and bottom 5 Reassemble parts as shown Screw wing nut down Coo tight N a Cleaning Air Cleaner oe Dry Element Tobe E IEE QO ws NUT To clean tap element top or Donam on flat surface or wash in non sudsing detergent and flush from inside uil water is clear After N air dry thoroughly before using DO NOT OIL l o ELement o SE SoD A mand VAS ae 000000000009 DJA om SF GROMMET EAN C Grass or chaff may clog i a a cooling system after pro ionged service in cutting tall E ee ear dry grasses or hay Continued operation with a clog nae PE ae ee ged cooling system causes severe overheating and UI sss cean out possible engine tie Remove blower housing and J eg A RT clean regularly op me aA ff 6 spark PLUG cI lean and reset gap at 030 every 100 hours of operation CAUTION Blast cleaning of spark plugs in machines that use abrasive grit is not recommended Spark plugs should be cleaned by scraping or wire brushing and washing with a commercial solvent or gasoline CLEAN COMBUSTION CHAMBER every 100 300 hours of operation The use of re
11. rm battery has much more starting capacity than a cold battery _ oe ee A Comal Cena a Manual Choke Push the stop switch against end of spark plug l i b Choke A Matic Move control lever to Stop po sition SPARK PLUG STOP SWITCH eer tx M A NT E N A e CHE 4 oL i EA E E A i ate 2A 0 Sunda operation BE SURE OIL LEVEL IS MAINTAINED _ 2 cHANGE OIL after first 5 hours of operation There after change oil every 25 hours of operation Remove oil drain plug and drain oil while engine is warm Re place drain plug Remove oil filler plug or cap and refill with new oil of proper grade Replace oil filler cesplug or cap ia Pie 3 CHANGE OIL GEAR REDUCTION optional by removing oil level plug Remove drain plug in bottom of gear case cover and drain oil every 100 hours of operation To refill remove oil check plug and oil filler plug and pour oil same grade as_used_in crankcase into filler hole until it runs out level check hole Replace both plugs Oil filler plug has a vent hole and must be in stalled on top of gear case cover 4 SERVICE AIR CLEANER REGULARLY Clean element every 25 hours more often under dirty conditions Oil Foam Type Pals QEP HING NUT _ 1 Remove wing nut and cover CS 2 Lift off foam element from base 3 Push down foam element as shown and pull out air a cleane
12. ur engine To increase engine pani move control in direction shown by arrow Se ion GENERAL INFORMATION o ENGINE DESIGN Your engine is 4 cycle single cylinder and L head It is air cooled fe AAS MODEL SERIES MODEL SERIES MODEL SERIES ae 146400 to 146457 170400 to 170457 190400 to 190457 Bore 2 3 4 ea 3 Stroke 2 3 8 2 3 8 2 3 4 Displacement RT ewin 16 79 cu in 19 44 cu in _ Horsepower 6 0 H P max 3600 RPM 7 0 H P max 3600 RPM 8 0 H P max 3600 RPM Torque Ft Lbs 9 25 max 2900 RPM 11 0 max 2600 RPM 12 7 max 2500 RPM The horsepower ratings listed above are established STORAGE INSTRUCTIONS in accordance with the Society of Automotive Engi Engines to be stored over 30 days should be SERN neers Test Code J607 For practical operation the ly drained of fuel to prevent gum deposits forming on _ horsepower loading should not exceed 85 of these essential carburetor rene fuel filter tee lines and ratings Engine power will decrease 3 for each _ tank 1 000 feet above sea tevel and 1 for each 10 above a Drain fuel tank completely and clean fuel filter p See Section 3 k TUNE UP SPECIFICATIONS b ety pi ie at ats in carburetor is com Spark Plug Type A Cee _ Autolite Champion While engine is still warm drain oil from crankcase Short PI a CS 45 5 AN CJ 8 Refill with fresh oil Long Plug GC 46 x A J 8 d Remove sp
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