Troy-Bilt 664DM, E666MM manual Checking and AdjustingReverse ClutchBelt Tension

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Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete stop, disconnect spark plug wire and move wire away from spark plug. Remove the key from the keyswitch on units so equipped.

Failure to follow these instructionscan result in serious personal injury or property damage.

Incorrectcable adjustment could cause the wheels and tines to rotate unexpect- edly. Follow adjustment procedures carefully. Failure to do so could result in personalinjury or propertydamage.

CheckingForward Belt Tension

1.Beforechecking, shut off engine, allow the engine and muffler to cool down, dis- connect the spark plug wire, removethe ignition keyon electric start models.

2.The coiled part of the forward clutch spring (E, Figure5-10) measures2" in length when the Forward Clutch Control leversare not pulled up. Pull either ForwardClutch Control Lever up against the handlebar and measurethe length of the coil on the forward clutch spring. Tension is correct if the length of the

extended coil is 2-1/2" (see Figure5-11). The forward clutch control cable needs

adjustment if the extendedlength of the coil is not 2-1/2". See Adjusting the Forward Clutch Beltfor a procedure.

Adjustingthe Forward ClutchCable

Do this procedure if the forward clutch spring measurement is not correct (see CheckingForward Belt Tension).

1.Beforeadjusting the belt, shut off engine, allow the engine and muffler to cool down, disconnect the spark plug wire, and remove the ignition key on elec- tric start models.

forward clutch cable adjuster (F,Figure 5- 10). Usetwo 1/2", open-end wrenches to

loosen the two jam nuts (A, Figure5-12) a few turns.

3.Movecable adjuster (B, Figure5-12) downward for more belt tension (see Figure5-12).

4.Handtighten the jam nuts and pull the ForwardClutch Control leversup against the handlebar. Measurethe spring coil (Figure 5-11). The extendedlength of the coil should be2-1/2". Repeatthis proce- dure until the extendedspring length is correct.

5.Tighten both jam nuts securely.

Checking and AdjustingReverse ClutchBelt Tension

CheckingReverse ClutchBelt Tension

The reverseclutch belt (D, Figure5-9) needsadjustment if the belt slips in reverseor if there is no reverse. See

Adjusting ReverseClutch Belt below.

AdjustingReverse ClutchBelt

1.Beforeadjusting the belt, shut off engine, allow the engine and muffler to cool down, disconnectthe spark plug wire, and removethe ignition key on elec- tric start models.

I

Figure 5-14: Reverse clutchcable adjuster. Left-side viewwith belt coverremoved.

4. Move the cable adjuster (D, Figure

5-14) awayfrom the pulleys to increase belt tension.

5.Tighten both jam nuts securely.

6.Reinstall the belt cover.

7.Move the unit to an openareaand test the reverseoperation. Repeatthis proce- dure if the unit does not respond when the reverseclutch is engaged.

FORWARD CLUTCH BELTREMOVAL

AND REPLACEMENT

The forward clutch belt (K, Figure5-15) engagesthe engine pulley (I) and the transmission pulley (J) when either Forward Clutch Control Lever is pulled up againstthe handlebar. This tightens the forward clutch cable (G)which causes the forward clutch idler pulley (H) to apply pressureto the forward clutch belt. This causesthe pulleysto turn for Forward movement.

Figure5-13: Belt cover.

,

Tension.

Figure5-12: Moveforwardclutchcable adjusterdownformorebelttension.

2.Belt adjustments aredone with the

2.Removethe two nuts (C, Figure5-13) and removethe belt cover.

3.Reversebelt tension adjustments are donewith the reverseclutch cable adjuster located on the left side of the

machine nearthe engine (D, Figure 5-14). Usetwo 1/2" open-endwrenches to

loosen the two adjuster jam nuts (E) afew turns.

Figure 5-15: Forwardclutchcontrol assembly.

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Contents 0TRO--- BI£T Engineinformation Tableof ContentsFinding Modelnumber CallingcustomersupportPreparation Safety Alert SymbolTraining OperationKeepchildren and pets away MaintenanceandstorageSkin, eyes,or clothing. Keepout of the reachof children Decals Introduction Unpackingandassembly InstructionsInspectunit Attach Reverse Clutch Control Cable Onelectric start units, reattachAttach Forward Clutch Control Cable Attach Wheel Gear Lever Attaching the Battery Cables Model E666MCheck Transmission Gear OIL Level Check AIR Pressure in TiresForward Clutch Control Wheel Gear LeverTo Operate the ForwardClutchControl Enginecontrols BREAK-IN Operation PRE-START ChecklistStartingandstopping Engine Gasolineis Highly Flammableand ITS Vaporsare ExplosiveStarting the Engine Operatingthe TillerStopping the Engine Turning the Tiller Around Stoppingthe Tiller and EnginePass,adjust the depth regulator to dig When tilling soil that hasntbeentilledUlator settings only an inch or two When cultivating breaking upTilling up and downslopes Tilling acrossslopeswithout usingterracesTerrace Gardening Powercomposting Loadingand Unloading ThetillerCheckhardware TillerlubricationChecktire Pressure To CheckTransmissionGear Oil Level TRANSMISSIONGEAR01LSERVICECheckforoil Leaks To Drain and Refill the TransmissionAIR Cleanerservice EnginecleaningEngineoilservice SparkplugserviceOFF Seasonstorage WheelgearcableadjustmentBolotines Checking and Adjusting ForwardClutchBelt Tension Checking and Adjusting Tension on Clutch BeltsReverseclutch belt D, -9 Loosen the two adjuster jam nuts E afew turns Checking and AdjustingReverse ClutchBelt TensionForward Clutch Beltremoval Replacement TensionInstallingForwardClutchBelt RemovingForwardClutchBeltInstalling ReverseClutch Belt Reverse Clutch Belt Removal ReplacementRemovingReverse ClutchBelt Batterymaintenance Troubleshooting Problem Possible Cause CorrectionHILLER/FURROWER--MODEL0EM-290-251 BUMPER--MODEL0EM-290-254Tubular steel bumper helpsto protect the enginefrom damage ROWMARKER-- MODEL0EM-290-257Handlebar Assembly and Control Levers Sc,ewl.... JNo. No REF. PartDescription QTY ForwardClutchCable ENGINE, Support BRACKETS, PULLEYS, BELTS, Belt CoverClutchCable 28, RefNo. No.DESCRIPTIONQTY 13 GW-20873 14 GW-1129-1 16 GW-1115 17 GW-1124-2 18 GW-90063 Drive SHAFT, Input Pinion Shaft and Gear Assemblies Input Pinion SHAFT& GearassemblyDescription QTY Main Driveshaft REF. Part Wheel SHAFT, Eccentric Shaft and Tiller Shaft Assemblies Part Description QTYBolo TINES, Wheels Bumper Attachment ROW Marker AttachmentComplete Attaches to FurrowerAttachment Bumper 0EM-290-254ROW Marker Attachment & Bumper Attachment RowMarkerMain Support& YokeAssembly- Part#1904522001Screw-hexflangedlocking HOOD, Bracket and Depth Regulator PartPart Description HILLER/FURROWER AttachmentQTY. No Model E666M Electric Start Assembly REF. Part Model E666MPage Page TROY-BILT Tiller Lifetime Limited Warranty

E666MM, 664DM specifications

The Troy-Bilt 664DM and E666MM models are well-regarded in the realm of outdoor power equipment, particularly within the segment of garden tillers. Both tillers are designed to deliver exceptional performance, making them ideal choices for home gardeners and landscaping enthusiasts alike.

The Troy-Bilt 664DM features a robust 210cc engine that provides ample power for breaking up hard soil and preparing garden beds. Its 18-inch tilling width allows for efficient coverage, making quick work of larger plots of land. One of the key features of the 664DM is its dual-direction tilling capability, which means it can till forward and backward. This innovative design helps to improve soil aeration and allows for a more thorough mixing of soil, compost, and nutrients. With a convenient depth adjustment feature, users can easily modify the tilling depth to accommodate different gardening needs, ranging from shallow tilling for seedbed preparation to deeper tilling for planting.

On the other hand, the Troy-Bilt E666MM goes above and beyond with its innovative features tailored for ease of use and efficiency. Powered by a 270cc engine, this tiller is engineered for heavy-duty tasks and can handle larger areas with ease. It boasts a 16-inch tilling width and a maximum tilling depth of up to 12 inches, making it an excellent option for breaking new ground or revamping existing gardens.

A standout feature of the E666MM is the inclusion of Troy-Bilt’s patented "Power Reverse" technology. This allows operators to effortlessly reverse the tilling direction, reducing the effort required when maneuvering in tight spaces or around garden obstacles. Additionally, the E666MM includes a durability-enhancing cast iron gear case and sealed ball bearings, ensuring a long-lasting and low-maintenance experience.

Both models emphasize user comfort with ergonomic handlebars and adjustable grips, minimizing strain during extended tilling sessions. The easy-to-start engines incorporate advanced combustion technology, promoting fuel efficiency while reducing emissions.

In summary, the Troy-Bilt 664DM and E666MM tillers standout in the garden tilling market for their robust construction, cutting-edge technologies, and user-friendly characteristics, making them suitable choices for both novice and experienced gardeners looking to elevate their outdoor gardening projects.
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