Craftsman Series 606 Operator's Manual

This handbook covers VLV40 - 675.Other illustrated Tecumseh 2 and 4-Cycle Engine andTransmission handbooks, booklets and wall charts areavailable fr

1-2 695578Parts IdentificationThis is a parts breakdown of a typical VLV engine. Usethis parts breakdown to identify parts. When orderingparts always

1-3695578Ref.No. Part Name1 Cylinder Ass'y.2 Pin, Dowel3 Element, Breather4 Cover, Breather5 Gasket, Breather cover6 Screw, Thread forming, 10-24

1-4 695578Oil and Fuel SpecificationsOilTo operate engine you need to use a clean, high quality,detergent oil. For recommended engine oil, See Table 1

1-5695578Removing Debris from EngineBefore each use, remove grass clippings, dirt and debrisfrom the following areas:• Cooling fins• Air intake scre

1-6 695578Spark PlugCheck spark plug yearly or every 100 operating hours.1. Clean area around spark plug.2. Remove and inspect spark plug.3. Replace s

1-7695578Seasonal StorageIf engine is to be unused for more than a month, prepareengine as indicated below:Fuel SystemFuel stored in the tank will gra

1-8 695578Tecumseh four-cycle engines require four strokes or cyclesto complete one power cycle.IntakeIntake valve is open, exhaust valve is closed.

2-1695578Chapter 2Air CleanersGeneral InformationIt is recommended that you takespecial notice of all itemsdiscussed in the handbook and wear theappro

2-2 695578To Service Air Cleaner1. Loosen cover screw (A).7. Clean and install pre-filter (if so equipped).8. Reinstall cover to air cleaner body.Be s

2-3695578CarburetionSplitRef.No. Part Name1 Throttle Shaft & Lever Ass'y.5 Dust Seal (Throttle)6 Throttle Shutter7 Throttle Shutter Screw25

IMPORTANT NOTICE!SAFETY DEFINITIONSStatements in this manual preceded by the followingwords are of special significance:WARNINGorWARNING indicates a p

2-4 695578The carburetor is a float feed, nonadjustable type, with aone piece extruded aluminum body. The float bowl,float, nozzle, and venturi are n

2-56955788. Remove the drain screw to access the spring, jetand "O" ring.The main jet should be inspected and cleaned if depos-its exist.NOT

2-6 695578Always pull the non metallic venturi out before soaking incarburetor cleaner.After the welch plug is removed from the carburetor it canbe so

2-76955785. Install a new welch plug over the idle fuel chamberwith the raised portion up. Use a punch equal tothe size of the plug, to flatten the pl

2-8 69557812. Install the carburetor to the engine using a newgasket.NOTEAlways replace the primer bulb when servicing carburetor.13. Press the new bu

695578Chapter 3Governors and LinkageGeneral InformationAll Tecumseh 4-cycle engines of recent manufacture areequipped with mechanical type governors.

695578Linkage Assembly/DisassemblyNOTESThe solid link is always connected from the throttle leveron the carburetor to the lower hole on the governor l

695578DoubleKnotDog SpringStarter DogFriction WasherRetainer CoverWasherSpringRetainer PinReinstall Retainer Pin1/8"(3.2 mm) From TopDisassembly

695578Stylized Rewind Starter with PlasticRetainerDisassembly and Inspection1. Remove the rewind assembly from the engine.2. Use the handle to pull a

69557812 Volt Electric StartersRemoval1. Remove face plate, air cleaner assembly and gastank.2. Compress plastic grommet and pull it out of theblower

Table Of ContentsChapter 1 General Information...1-1Engine Iden

695578Check BrushesBefore disassembling armature, check brushes for wear.• Make sure brushes are not worn to the pointwhere brush wire bottoms out in

695578 Assembly1. Attach the ground wire prior to assembling the electricstarter to the baffle.2. Attach the black ground wire to the electric starter

695578NOTES4-6www.mymowerparts.comFor Discount Tecumseh Engine Parts Call 606-678-9623 or 606-561-4983

695578Chapter 5FlywheelsDrop pin through to disengage brake.5-1General InformationDisconnect negative battery cablebefore servicing. If the positiveba

695578Cored HolesOn engines with cored holes (untapped) use flywheelpuller Part No. 670306.1. Screw the knock-off (Part No. 670169) tool downuntil it

695578Brake SystemTecumseh’s Flywheel Brake System provides consumersafety by shutting down the engine and lawn mowerblade within seconds after the op

695578Wiring Diagrams(Electric Start Systems). All wiring beyond theconnectors on the engine are supplied by the equip-ment manufacturer. Check all t

695578Brake Control Lever Replacement1. Mark hole that spring is installed into baffle.2. Remove “E” clip from brake lever shaft.3. Lift brake control

695578AlternatorThe 350 Milliampere charging system consists of asingle alternator coil mounted to one side of the solidstate module.CAUTIONNOTEThis c

695578Solid State IgnitionTecumseh’s solid state capacitor discharge ignition(CDI) is an all electronic ignition system and is encap-sulated in epoxy

Chapter 4 Starters ...4-1Disassembly and In

695578The proper air gap setting between magnets and thelaminations on CDI systems is .0125'’ (.313 mm). Installgauge, Tecumseh Part No. 670297 b

695578Piston and RingsUse extreme care when handlingpiston. Any scratches, gouges orother marks could score the cylinder duringoperation and result in

695578Connecting RodsDo not attempt to straighten bentconnecting rods. Doing so willdamage the cylinder and piston beyond repair.Match marks on connec

695578Chapter 9Cylinders and Cylinder HeadsCylinder ServiceCheck cylinder for dirty, broken or cracked fins, worn orscored bearings or scored cylinder

695578Chapter 10Crankshafts, Camshafts and LubricationCrankshaftsDo not attempt to straighten abent crankshaft. Doing so willdamage gears, and result

695578Lubrication SystemAll Tecumseh Vertical shaft 4-Cycle engines use apositive displacement plunger oil pump to pump oil fromthe crankcase, up thro

695578The breather compartment is located under theflywheel. A check valve allows excess crankcasepressure to be vented through the element and outth

695578Chapter 11Valves, Lifters, Spring and Valve SeatsGeneraI InformationValves must be in good condition, proper sealing andproper gap must be maint

695578Valves are not identical. Make sure the valve marked“EX” or “X” is installed in the exhaust valve location, andthe valve marked “I” is installed

695578Oil Seal Service1. Drain oil from crankcase.2. If the crankshaft end is rusty or pitted, polish thecrankshaft with emery cloth so it will not da

Chapter 10 Crankshafts, Camshafts and Lubrication...10-1Crankshafts ...

695578Table 1. 4-Cycle Engine Troubleshooting ChartEngine Fails to Start or Starts with DifficultyNo fuel in tank. Fill tank with clean, fresh fuel.Sh

69557813-2Governor parts sticking or binding. Clean, and if necessary repair governor parts.Carburetor throttle linkage or throttle Clean, lubricate,

695578Oil level too high. To check level turn dipstick cap tightly into receptacle foraccurate level reading.Oil filler cap loose or gasket damaged ca

695578Bent crankshaft causing seal to leak. Check crankshaft for straightness and replace if necessary.New seal damaged upon installation. Use proper

695578CorrectionsTroubleTable 2. Carburetor Malfunction Check PointsEngine will not start 1, 2, 3, 4, 5, 6, 8, 14, 15, 17, 18, 19Engine will not accel

695578 Does not function Weak or dead battery. Check charge and/or replace battery.Loose or faulty electrical connections. Correct.Corroded battery te

695578Motor stalls under load. Shorted field coil. Correct, or replace housing assembly.Shorted or open armature. Replace armature.Intermittent operat

695578VLV40 VLV50, 55, 60, 65, 6.75VLV126Displacement 11.19 183.4 cc 12.6 207 ccStroke 2.047 51.993 mm 2.047 51.993 mmBore 2.6390 67.031 mm 2.796 71.0

695578Inch-Lbs. NmGovernor Rod Clamp to Lever 7-12 1.4 - 1.4Breather Cover 40-50 4.5 - 5.7Valve Box Cover 25-35 3.1 - 4.0Connecting Rod 95-110 10.7 -

695578Available Technician's Handbooks692508Covers the diagnosis and repair of Tecumseh 2-cycleengines. Except the TC Engine and TVS840.692509Cov

I. General Safety PrecautionsA. Avoid Carbon Monoxide PoisoningAll engine exhaustcontains carbonmonoxide, a deadlygas. Breathingcarbon monoxidecan cau

695578670264670262670309670329670314670337670336670269670268670327A670310670330670335670103670308670267670266670265670261670260670277670306FlywheelPul

695578FLYWHEEL KNOCK-OFF TOOLNo. 670169VIBRATION TACHOMETERNo. 670156 - Vibration tachometer.No. 670339 - E-5 SocketNo. 670283 - Valve Guide ReamerTOR

695578143.434112 VLV55-501004143.434252 VLV55-501008143.945500 VLV55-501004A143.956000 VLV60-502003A143.956002 VLV60-502004A143.956006 VLV60-502012A14

695578.016 = 1/64.031 = 1/32.047 = 3/64.063 = 1/16.078 = 5/64.094 = 3/32.109 = 7/64.125 = 1/8.141 = 9/64.156 = 5/32.172 = 11/64.188 = 3/16.203 = 13/64

695578NOTES16-3www.mymowerparts.comFor Discount Tecumseh Engine Parts Call 606-678-9623 or 606-561-4983

www.mymowerparts.comFor Discount Tecumseh Engine Parts Call 606-678-9623 or 606-561-4983

I. General Safety PrecautionsA. Avoid Carbon Monoxide PoisoningAll engine exhaustcontains carbonmonoxide, a deadlygas. Breathingcarbon monoxidecan cau

1-1695578Tecumseh engine model, specification and serialnumbers are stamped or on a decal on the blowerhousing. The decal also contains any emission c