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Version 7/10
Racing Performance Catalog & Reference Guide
Model/Type: 124335 8105-01 (International)
124335 8104-01 (US Standard)
Not Not for for
Reproduction Reproduction
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Table of ConTenTs safeTY ....................................................................................................................... 1 WoRlD foRMUla General Specs ............................................................................................................ 3 Special Tools ............................................................................................................... 3 Torque Specs ..................................................................
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safeTY 1 Not Not for for Reproduction Reproduction safeTY
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safeTY Briggs & stratton does not approve or authorize the use of these engines on 3 wheel all terrain vehicles (atvs), motor Bikes, fun/recreational go-karts, or aircraft products. use of these engines in such applications could result in property damage, serious injury (including paralysis), or even death. this engine requires special technical expertise and preparation Before it can Be used in competitive events. 2 Not Not for for Reproduction Reproduction
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WoRlD foRMUla Installing Cylinder Head Plate GeneRal sPeCs Torque to 90 - 120 in-lbs. Model: 124335 (10 - 14 nm) Type: 8104/8105 Torque to Displacement: 70 - 90 in-lbs. 12.48 Cu. in. - 205 cc (7.9 - 10.1 nm) Design: Slant, 30 degree, Overhead Valve, Electric Start Bore: 2.6875/2.6885 in. (68.3mm) Stroke: 2.2 in. (55.9mm) Compression Ratio: 9.5 to 1 Factory Timing: 29 degrees BTDC sPeCIal T ool ReQUIReMenTs General Model 12 Manual Part No. 272147 PVL Flywheel Puller Part No. 19584 Flywhe
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WoRlD foRMUla enGInes WoRlD foRMUla cylinder assembly (engine Model series 124335) 555664 Ring Set 55513 Ring Set 557121 Piston Assembly (Std.) (.10" Over - Contains 10 Top Rings) (Std., with File to fit Top Ring) 272147 Repair Manual 555665 Ring Set 55514 Ring Set 557122 Piston Assembly (.10" Over) (.20" Over - Contains 10 Top Rings) (.10" Over, with File to fit Top Ring) 555666 Ring Set 55515 Ring Set 557123 Piston Assembly (.20" Over) (.30" Over - Contains 10 Top Rings) (.20" Over, with File
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WoRlD foRMUla head assembly (engine Model series 124335) 699230 Hex Washer Head Metric Screw (Rocker Cover Bottom) 692557 Hex Washer Head Screw (Rocker Cover Top & Sides - 1/4”-20 UNC) 555679 Rocker Cover 691890 Rocker Cover Gasket* 557045 Exhaust Manifold 691764 Hose Connector 694543 Rocker Arm Adjuster* 557015 Rocker Arm* 694544 Rocker Arm Stud* 699230 Hex Washer Head Metric Screw 557016 Valve Cap* (Cylinder Head Plate) 557025 Valve Retainer* 691343 Push Rod Guide* 557047 Exhaust Gasket 557024
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WoRlD foRMUla enGInes WoRlD foRMUla housing & flywheel (engine Model series 124335) 555577 Label Kit 557125 Magneto Armature 699477 Metric Screw (Magneto Armature) 557128 Starter Ring Gear (Includes 4 Pcs. 557129 - Screw) 698039 Starter Drive Cover 695630 Stop Wire (Used on Type No. 8105 & 8105) 557126 Flywheel Assembly 699201 Screw (Flywheel Fan) 557134 Blower Housing 699200 Screw 794451 Hex Washer (Starter Drive Cover) Head Metric Screw (Blower Housing - M6 x 1) 692592 Flywheel Fan 699359 H
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WoRlD foRMUla carburetor assembly (engine Model series 124335) 557081 Needle Jet 555647 Throttle Cable Boot 557083 Throttle Valve 555650 Needle Valve Retainer (Contains 5 Clips & 5 Retainers) 698973 Air Cleaner 557096 Air Cleaner (Water Repellent Cover, 557088 Throttle Optional) Cable Cap 690939 Nut+ (Carburetor) 557087 Throttle Return Spring 555586 Idle Speed Kit 557007 O-Ring Seal* 555255 Pilot Jet 557086 Emulsion Tube 557130 Carburetor Spacer+ 557012 Main Jet (Gasoline - Contains: 36 & 40
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WoRlD foRMUla enGInes WoRlD foRMUla clutch (engine Model series 124335) 557023 Centrifugal Clutch Assembly (Does not contain Radius Washer 2400025) 557115 Snap Ring 557116 Cartridge Springs Kit (Includes 3 Orange & 3 Yellow) 557114 Clutch Cartridge (Includes Springs) 557111 Clutch Drum 557112 Clutch Hub Shaft 557115 Snap Ring 557113 Clutch Thrust Spacer/Bearing 557019 Mounting Hardware 557020 Clutch Gear (17T, #219) 557021 Clutch Gear (16T, #219) 557092 Clutch Gear (19T, #219) 557091 Clutch Gear
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WoRlD foRMUla starter assembly (engine Model series 124335) *Included with 557068 Starter Assembly +Included with 557073 Brush Retainer 557120 Screw 690323 Screw* (Support Bracket) (Starter Motor) 557119 Support Bracket (Starter) 691532 Starter Strap 691286 End Cap* 691293 Brush Retainer* 690635 Clamp (Starter Solenoid) 497608 Brush Set*+ 557072 Starter Housing* 691029 Nut*+ (Brush Retainer) 692966 Starter Armature* 691261 Washer*+ (Brush Retainer) 557067 Starter Solenoid 692353 Pinion Gear 790
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WoRlD foRMUla enGInes WoRlD foRMUla control bracket & gasket set (engine Model series 124335) 808656 Fuel Pump 793379 Stop Wire (Used on Type No.(s) 8101 - 8105) 692602 Stop Wire (Rocker Switch, Used on Type No. 8002) 699479 Metric Screw (Control Panel) 555699 Control Panel 557028 Starting Switch 692602 (Rocker arm Switch used on type no. 8101 - 8105) *Included with 557110 Engine Gasket Set + Included with 557027 Valve Gasket Set 557044 Intake Gasket*+ 694088 Cylinder Head Plate Gasket*+ 699485
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PZ26 CaRbUReToR TUnInG GUIDe To adjust the Idle Mixture Screw proceed as follows. Turn the Idle Mixture screw in until it lightly seats or stops. Back the screw out the specified number of turns. Warm the engine and set the Idle Speed screw slightly higher than the desired idle rpm. Turn the Idle Mixture screw in or out to obtain the highest rpm. Turn the Idle Speed screw to the desired idle rpm. A slightly rich idle mixture is usually bet- ter for acceleration. If a smooth idle cannot be
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WoRlD foRMUla enGInes eleCTRICal sCHeMa TIC This system is designed for a 12-volt power Electric Start Wiring Diagram supply. For most racing applications, a high-quality, gel cell battery (determined by your authorized sanctioning body) with at least an 8-amp hour rating is recom- mended. An 8mm positive battery cable is required between the battery and starter solenoid. Holding down the starting switch, Part #557028, will turn the ignition OFF, and is located on the control panel, Part
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GReen aIR fIl TeR • There is a difference in technology with a standard paper air filter and your new Green High Performance Air Filter. • Paper filters stop dirt by being made up of small holes which allow the air to pass but not the dirt. Unfortunately this is very restrictive to your engine. After each particle of dirt is stopped the filter becomes that much more restrictive, until air flow is halted to almost nothing, starving your engine of air. This drastically decreases your engine’s pe
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WoRlD foRMUla enGInes oIl Oil is the lifeline of any engine and using good quality oil is a must! We recommend running 16 ounces of a kart spe- cific racing oil. We no longer recommend using automotive oil beyond break-in due to recent domestic and international changes that could adversely affect product life. It is important that oil is changed and monitored on a regular basis as dirt and other contaminants such as fuel, etc. will impact the life of this engine. NOTE: For your engine break-
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CaRbURaDoR W albR o PZ adentro hasta que este ligeramente se asiente o se detenga. Devuelva el Tornillo hacia fuera el número de giros especificados. Caliente el motor y ajuste el Tornillo de Mezcla de Ralentí hacia Resorte adentro o hacia fuera para obtener las rpm más altas. Gire el Tornillo de Mezcla de Ralentí a las rpm de ralenti deseadas. Una Válvula Multifuncional mezcla de ralenti ligeramente rica es usualmente mejor para la del Acelerador aceleración. Kit del Boquerel Aguja Si no
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MoToR De CaRReRas WoRlD foRMUla SUICHE DE ARRANQUE esQUeMa eleCTRICo Este sistema está diseñado para un Esquema del Sistema suministro de energía de 12-voltios. de Cableado del Arranque Eléctrico Para la mayoría de aplicaciones de eventos competitivos se recomienda una batería de alta calidad, con celdas de gel (determinada por su cuerpo de aprobación autorizado) con una clas- PARA EL MONTAJE DEL MOTOR ificación de por lo menos 8 amperios hora. Se requeire un cable positivo de batería d
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fIl TRo De aIRe VeRDe • Existe una diferencia en tecnología con el filtro de aire de papel estándar y con su nuevo Filtro de Aire Verde de Alto Rendimiento. • Los filtros de papel atrapan la suciedad por estar compuestos de agujeros pequeños los cuales permiten que pase el aire pero no la suciedad. Desafortunadamente esto es muy restrictivo para su motor. Después de que cada partícula de suciedad queda atrapada el filtro se vuelve mucho más que restrictivo, hasta que el flujo de aire atrapa c
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MoToR De CaRReRas WoRlD foRMUla MonTaJe Del Mo ToR Este motor está diseñado para ser instalado EN POSICIÓN HORIZONTAL en un kart. Debido a la instalación del carbura- dor y al sistema de lubricación, NO recomendamos instalar el motor a un ángulo de cualquier grado. aCeITe El aceite es la vida de todo motor y usar uno de buena calidad es un deber! Se recomienda operar con no menos de 18 onzas de aceite sintético grado 30 de clasificación SAE. Es importante que el aceite sea cambiado y monitore
