130G32 OHV Horizontal Shaft Engine

Customer Education

Safety First!

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• Always Wear Eye Protection
• Remove Spark Plug Wire From Spark Plug
• Drain Fuel Tank��

Customer Education

Remove Air Cleaner Cover

• Function: Holds the air filter in place and directs air through it.
• Remove Air Cleaner Cover Knob, Cover, Wing Nut, Air Cleaner Cartridge And Sealing Gasket Below Cartridge

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Customer Education

Remove Air Cleaner Cover and Filter

• Function: Paper filter that removed dirt, dust and debris from air before it enters engine.
• Inspect paper filter for tears
• Foam pre-cleaner is washable if equipped

Customer Education

Remove Trim Panel

• Pull throttle lever knob off
• Remove 3, 8mm black screws

Customer Education

Remove Muffler (Spark Arrestor)

• Function: Reduce noise and block sparks from leaving engine and starting fires.
• Use 13mm socket remove nuts and lock washers and remove muffler

Customer Education

Remove Spark Plug

• Function: Ignites the air/fuel mixture
• Use 5/8 in. spark plug socket QC12YC is Champion part number

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Customer Education

Remove Air Cleaner Backing Plate/Base

• Use 8 mm socket for top screw
• Use 10mm socket for nuts
• Disconnect breather tube at valve cover
• Slide off studs CAREFULLY!!!

Customer Education

Disconnect Fuel Line

• Function: Directs fuel from fuel tank to engine (carburetor). Fuel filter removes dirt before it enters engine.

Customer Education

Remove Fuel Tank Fasteners

• Use 12mm socket for 2 nuts above low oil module
• Use 8mm socket for screw just above spark plug
• Keep screw separate – it is a different length than others

Customer Education

Remove Fuel Tank

• Function: Holds gasoline for engine and has baffles inside To Reduce Fuel From Sloshing

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Customer Education

Gas Tank Cap

• Function: Keeps gas from spilling out of engine
• Relation: Cap Has Threads That Allow Air To Be Vented. Air can go in tank but not out.

Customer Education

Remove Carburetor

• Slide carburetor along studs for an inch or two
• Pull upwards on governor link to disconnect
• Disconnect but do not damage spring.
• Note fuel line routing

Carburetor

Customer Education

Carburetor & Float Bowl

• Function: Hold gas prior to entering carburetor where it mixes with incoming air
• Relation: Controls flow rate of gas

Carburetor

Customer Education

Throttle Plate (Closed)

• Function: Blocks air from entering engine which controls speed.
• Location: Inside Carburetor
• Relation: Closed position blocks air to slow down engine speed

Carburetor

Customer Education

Throttle Plate (open)

• Function: Open allows engine speed to increase.

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• Location: Inside Carburetor

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Carburetor

Customer Education

Venturi & Fuel Pick Up

• Function: Narrower tunnel where fuel is added to incoming air
• Relation: As air tries to pass through narrow opening, it speeds up. This causes vacuum which sucks in the fuel.

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Carburetor

Customer Education

Identify Governor Parts

• Function: Maintains constant engine speed
• Make a drawing of the governor mechanism, noting holes the linkage and springs are installed in and how they are oriented

Customer Education

Remove Governor Control Lever

• Use a 10mm wrench Loosen pinch bolt nut, but do not remove
• Lift governor control lever off the governor shaft
• Do not remove governor shaft spring pin.

Customer Education

Remove Speed Control Bracket

• Function: Allows user to control engine speed, choke, and shut off
• Remove 2 screws with 8mm socket

Customer Education

Disconnect Governor Spring

• Turn bracket over and disengage spring from tab

Customer Education

Remove Rewind Starter Assembly

• Function: Contains the cord a user pulls to start the movement of the engine.
• Use 8mm socket

Customer Education

Remove Blower Housing

• Function: Protect user from spinning parts on top of engine & allow air to enter fan to cool engine
• Use 8mm socket

Customer Education

Disconnect Wiring from Switch

Customer Education

Remove Ignition Armature (Coil)

• Function: Creates the spark that ignites the air/fuel in the engine.
• Relation: Picks up magnetic field on flywheel to create spark.
• Use 8mm socket

Customer Education

Remove Finger Guard

• Use 8mm socket
• Disconnect low oil sensor - Pull apart by metal connectors

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Customer Education

Remove Flywheel Nut

• Use 21 mm socket, breaker bar and 19433 strap wrench
• Lay handle of strap wrench to the left on work bench

Customer Education

Pull-Cord Catch

• Function: Pins in pull-cord assembly grab inside to start engine spinning.

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Customer Education

Fan Blades

• Function: Sucks air through engine cover opening and pushes it around engine to keep it cool.

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Customer Education

Remove Flywheel

• Use 8 or 9 inch Puller for earlier engines
• Use 19203 puller for current engines

Customer Education

Flywheel

• Function: Heavyweight helps balance engine and provide momentum to keep engine rotating.

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• Also contains the Magnito

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Customer Education

Key Way

• Function: Key way for woodruff key. Aligns magnet on flywheel with crank for proper spark timing.

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Customer Education

Woodruff Key

• Function: Aligns flywheel to crankshaft

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Customer Education

Remove Cylinder Air Guide

• Function: Directs airflow around cooling fins
• Use 8mm Socket

Customer Education

Cooling Fins

• Function: Dissipate heat created by engine as air passes over fins.

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• Location: Cylinder block and Head

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Customer Education

Remove Valve Cover

• Function: Covers the top of the engine and seals oil inside engine.
• Cover is also the breather
• Use 8mm socket

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Customer Education

Loosen Rocker Arm and Jam Screw

• Use 14mm wrench and 10mm wrench
• Loosen 10mm nut then 14mm nut about 2 turns
• Turn both rocker arms to the side and remove push rods

Customer Education

Remove Cylinder Head

• Function: Controls the flow of Air/Fuel into the cylinder and Exhaust out of the engine
• Relation: Must seal on top of cylinder to allow piston to build pressure (compression)
• Use 12mm socket

Customer Education

Valvetrain (Rocker Arms)

• Function: Rocker arms transfer upward movement of push rods into downward movement which opens the valves.

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• Location: Cylinder Head

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Customer Education

Valve Spring & Keeper

• Function: Hold the valve closed to keep cylinder sealed. The Spring Keeper keeps spring tension on the valve.

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• Note: can be removed by pushing down on spring keeper and unhooking valve

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Customer Education

Valves (Intake & Exhaust)

• Function: Allow air & fuel into the cylinder and allow exhaust gases out of the cylinder.

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• Intake Valve=Larger one
• Exhaust Valve=Smaller one

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Customer Education

Valves (Intake & Exhaust)

Function: Components that open and close the valves

Push Pin: Ride on camshaft lobes

Push Rods: transfer motion to rocker arms

Rocker arm: Transfer movement to valve

Valve: open and close to allow/block air in and out of engine

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Customer Education

Valve Seats, Combustion Chamber & Spark Plug (Video Link)

Function: Valves seat against them to seal the cylinder unless a valve is opened. All air is compressed into this small area and then the spark plug fires to create power.

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Customer Education

Head Gasket

• Function: Seals Cylinder Head and Block so air cannot leak in or out.

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• Bring Piston to TDC on Compression Stroke

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Customer Education

Remove Crankcase Cover

• Function: Side of crankcase which holds engine oil.
• Relation: Also supports crankshaft and camshaft (wipe out excess oil)
• Use 10 mm socket

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Customer Education

Remove Camshaft and Tappets

• Function: Pushes up on the push rods to open and close the valves

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• (pull on gear with fingers to pop out of case)

Customer Education

Cylinder Compression Reducer

• Timing marks of cam gear and crankshaft gear should align
• Draw diagram

Customer Education

Cylinder Compression Reducer

• Function: Opens the exhaust valve briefly during engine starting to lower compression pressure. This makes engine easier to start when pulling the string.
• Arm moves away after engine starts and RPMs increase (centrifugal force)

Customer Education

Remove Piston/Connecting Rod Assembly

• Function: Connects the piston connecting rod to the crank shaft
• Use 10 mm socket
• Piston and rod have alignment marks called “match marks”

Customer Education

Piston

• Function: Transfers energy from chemical reaction to up and down mechanical motion

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Customer Education

Piston Rings

• Compression :Top two seal in pressure on top of piston
• Oil ring: squeegees oil off cylinder walls

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2nd Compression Ring

Oil Ring

1st Compression Ring

Customer Education

Remove Crankshaft

• Function: Converts Linear Motion Into Rotary Motion.
• Attaches To A Device For Producing Work, Mower Blade, Belts, Hydraulic Pump, Etc.

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Customer Education

Crankshaft Gear

• Function: Gear connects crankshaft to camshaft for correct valve to piston timing
• Location: On crankshaft
• Relation: Dots need to line up on each gear (arrow).

Customer Education

Crankshaft Counterweights

• Function: Provide the needed energy (momentum) to push the piston up and keep engine balanced.

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Customer Education

Journal for Piston

• Function: Surface where piston connecting rod attaches to crankshaft.
• Relation: Smooth to allow oil to flow around it.

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Customer Education

Discuss Crankcase

• Function: Cylinder that piston slides up and down in. Must be smooth to allow piston rings to seal piston to walls.
• Note governor gear and shaft, ball bearing and low oil sensor

Customer Education