Enginecleaning, Aircleanerservice, Model 634A only

moving partsto come to a complete stop, disconnectspark plug wire and move wire awayfrom

,_ WARNING: Beforeinspecting, cleaning or servicing the machine,shut off engine, wait for all spark plug. Failureto follow these instructions can result in serious personal injury or property

damage.

FORWARDCLUTCH

BAIL ADJUSTMENT

If the Forward Clutch Baildoes not func- tion properly,first checkthat the forward drive belt is adjusted properly (see Check- ing and Adjusting Forward Drive Belt Ten- sion). If this fails to correct the problem,

contact Troy-Bilt LLC or your authorized dealerfor service advice.

CHECKINGANDADJUSTINGRE- VERSEDRIVEBELTTENSION

(Model 634A only)

It is important to maintain correct tension on the reversedrive belt. A loose belt will causethe tines andwheelsto slow down - or stop completely - eventhough the en- gine is running at full speed.

Whenchecking belttension, also checkthe belt for cracks, cuts or frayed edgesand replace it as soon as possible.

•Checkbelt tension after the first two hours of break-in operation andafter every 10 operating hours.

To CheckReverse BeltTension:

1.Stop engine, wait for all parts to stop moving and disconnect spark plug wire.

2.Removescrew in plastic belt cover and slide belt cover (which is attachedto for- ward clutch cable) out of the way.

3.Haveanassistant pull the Reverse Clutch Control knob all the way out and hold it inthat position. Measurethe length of the cable wire betweenthe end of the

threaded cableadjuster (A, Figure5-5) and

the end of the Z-fitting (B)to which the ca- ble wire is attached.

4. Thebelt tension is idealif the cablewire length measuresbetween1/8"to 1/4".If it is lessthan 1/8" (andif there is no reverseac- tion whenthe tiller is running), then make the following adjustments

NOTE:Ifthe lengthis morethan 1/4",noad- justment is needed--as long asthe reverse actionfunctions properly.

5. Releasethe ReverseClutch Control knob.andthen unthread the inner jam nut (C, Figure 5-6) oneto two turns. Pull the threaded cable adjuster (A, Figure 5-6) to

the left until the innerjam nut (C) touches the bracket.

6.Preventthe inner jam nut (C) from turn- ing and tighten the outer jam nut (D) againstthe bracket. Preventthe outer jam nut (D) from turning and tighten the inner jam nut (C) againstthe bracket.

7.Measurethe gap by repeating Step 3.

Readjust as neededby repeating Steps 5 and 6.

8. Reinstall the belt cover.

Figure5-5: Measure cable wire length to checkfor correct reversebelt tension.

Figure5-6: Movethreadedadjuster(,4)toleft toincreasebelt tension.

Replacement Belt Information

If the drive belt needsto be replaced,see your local authorizeddealeror refer to the Parts List for ordering information. Use only a factory-authorized belt as an "over- the-counter" belt may not perform satis- factorily. The procedure requires average mechanicalability andcommonly available tools.

ENGINECLEANING

Keepingthe engineclean will help to en- sure smooth operation and prevent dam- agefrom overheating. Referto the Engine Owner'sManualfor enginecleaning ser- vice intervals and instructions. Besure thatthe muffler is cool beforeservicing the engine.

AIRCLEANERSERVICE

The air cleaner filters dirt and dust out of the air before it enters the carburetor. Op- erating the enginewith a dirty, clogged air filter can causepoor performance and damageto the engine. Neveroperatethe enginewithout the air cleanerinstalled. In- spect and service the air cleaner more of- ten if operating in very dusty or dirty conditions. Referto the engine Owner's Manualfor air cleanerservice intervals and instructions.

ENGINE OIL SERVICE

Checkthe engine oil level before each use and after every five hours of continuous operation. Runningthe engine when it is low on oil will quickly ruin the engine.

It is recommendedthat you changethe motor oil after every 10hours of operation and even sooner when operating in ex- tremely dirty or dusty conditions. Referto the EngineOwner'sManual for detailed service instructions.

A. To Checkthe Engine Oil Level:

1.Parkthetiller ona levelareaandshut off the engine.

2.Levelthe engine (use the Depth Regula- tor Leverto adjust the engineangle).

630C, 1634A specifications

The Troy-Bilt line of tillers, specifically the 634A, 630C, and 634F models, represents a blend of reliability, power, and advanced engineering designed to meet the needs of avid gardeners and professional landscapers alike. Each model boasts unique features and technologies that enhance performance and usability.

The Troy-Bilt 634A is equipped with a 6.5 HP engine, providing ample power for tackling tough soil conditions. The tiller's 16-inch tilling width allows for efficient breaking up of soil, while its impressive tilling depth of up to 8 inches ensures that garden beds are adequately prepared for planting. The 634A model features a lightweight design, making it easy to maneuver around flower beds and garden rows. Additionally, the adjustable handlebar enhances comfort during operation, accommodating various user heights.

In contrast, the Troy-Bilt 630C offers a slightly different approach. This model is designed for those who seek enhanced control and precision while tilling. It features a 6.75 HP engine and similar tilling capabilities but adds an innovative counter-rotating tilling technology. This feature is particularly useful for breaking up compacted soil and mixing in organic materials, resulting in a well-aerated and fertile garden bed. The 630C also comes equipped with a variety of attachments, allowing users to expand its functionality for different gardening tasks.

The 634F model elevates the line further with its robust frame and advanced features. With a powerful 7 HP engine, it provides optimal performance for larger plots of land. The 634F is designed with a wider tilling width of 18 inches, making it perfect for larger gardens and landscaping projects. Its self-propelled system allows for effortless movement across various terrains, reducing user fatigue. Additionally, the 634F includes a unique automatic depth adjustment feature, enabling gardeners to achieve the desired tilling depth without constant manual adjustments.

Across all three models, Troy-Bilt's commitment to user-friendly design shines through. Features such as easy-to-access controls, durable construction, and stable wheels enhance overall usability. The patented "Forward and Reverse" operating system found in these tillers ensures that gardeners can navigate easily in tight spaces, making them versatile for any gardening situation. The combination of power, advanced technology, and user-focused design makes the Troy-Bilt 634A, 630C, and 634F top choices for those looking to cultivate their garden with ease and efficiency.