I

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.

CHECKFOROIL LEAKS

Beforeeach use, check your tiller for signs of an oil leak - usually a dirty, oily accumulation either on the unit or on the floor where it has beenparked.

Alittle seepagearound a cover or oil seal is usually not a causefor alarm. However, if the oil drips overnight then immediate attention is neededas ignoring a leak can result in severetransmission damage.

If a cover is leaking,try tightening any loose screws or bolts. Ifthe fasteners are tight, a new gasket or oil seal may be required. If the leak is from around a shaft and oil seal,the oil seal probably needsto be replaced. Seeyour autho- rized dealeror contact the factory for service or advice.

IMPORTANT:Neveroperatethe tiller if the transmission is low on oil. Checkthe oil levelafter every 30 hours of operation and wheneverthere is any oil leakage.

TRANSMISSIONGEAR01LSERVICE

Checkthe transmission gear oil level after every 30 hours of operation or whenever you notice any oil leak. Operating the tiller when the transmission is low on oil

can result in severedamage.

A. To CheckTransmissionGear Oil Level:

1.Checkthe gear oil level when the trans- mission is cool. Gearoil will expand in warm operating temperaturesand this expansion will provide an incorrect oil level reading.

2.To check the gear oil level (and to add oil, if necessary), refer to "STEP 5: Check GearOil Level in Transmission" in Section

2of this manual.

B. To Drain and Refill the Transmission:

The transmission gear oil does not need to be changed unless it has beencontami- nated with dirt, sand or metal particles.

1.Prop up the left side of the unit so that it will be securely supported when the left side wheel is removed. Removethe left side wheel by removing the wheel mount- ng hardware.

2.Unscrewthe plastic gear oil fill plug from the top of the transmission.

3.Placea clean pan below the transmis-

sion drain plug (see Figure5-3) and removethe drain plug. The oil will start flowing out of the drain hole (it may flow slowly, especially in cold temperatures).

4.Removethe transmission gearoil level check plug that is locateda few inches abovethe left side wheel shaft.

5.When the oil stops flowing, tilt the transmission forward to drain oil from the rear of the transmission.

6.After draining the oil, clean the threads of the drain plug, apply a non-hardening removablegasket sealantto the threads, and securely reinstall the drain plug.

7.Using a clean funnel, slowly add SAE

140or SAE85W-140 weight gear oil

(with an API rating of GL-4 only) to the transmission. The transmission holds

approximately 3-1/4 pints (52-54 ounces). Tilt the tiller slightly backwards to makesure the gear oil reachesthe rear (tine) end of the transmission. Step

adding gear oil when it begins to flow from the oil level check hole on the side of

the transmission.

8.Securely reinstallthe oil levelcheck plug.

9.Securely reinstallthe gear oil fill plug on top of the transmission

10.Reinstall the wheel and remove the prop.

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Troy-Bilt 664DM, E666MM manual Checkforoil Leaks, TRANSMISSIONGEAR01LSERVICE, To CheckTransmissionGear Oil Level
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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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