WARNING: 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. Failure to follow these instructions can result in serious personal injury or property damage.

FORWARD CLUTCH

BAIL ADJUSTMENT

If the Forward Clutch Bail does not func- tion properly, first check that 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 dealer for service advice.

CHECKING AND ADJUSTING RE- VERSE DRIVE BELT TENSION

(Models 634F/634A only)

It is important to maintain correct tension on the reverse drive belt. A loose belt will cause the tines and wheels to slow down – or stop completely – even though the en- gine is running at full speed.

When checking belt tension, also check the belt for cracks, cuts or frayed edges and replace it as soon as possible.

•Check belt tension after the first two hours of break-in operation and after every 10 operating hours.

To Check Reverse Belt Tension:

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

2.Remove screw in plastic belt cover and slide belt cover (which is attached to for- ward clutch cable) out of the way.

3.Have an assistant pull the Reverse Clutch Control knob all the way out and hold it in that position. Measure the length of the cable wire between the end of the threaded cable adjuster (A, Figure 5-5) and the end of the Z-fitting (B) to which the ca- ble wire is attached.

4.The belt tension is ideal if the cable wire length measures between 1/8" to 1/4". If it is less than 1/8" (and if there is no reverse action when the tiller is running), then make the following adjustments

NOTE: If the length is more than 1/4", no ad- justment is needed—as long as the reverse action functions properly.

5.Release the Reverse Clutch Control knob.and then unthread the inner jam nut (C, Figure 5-6) one to two turns. Pull the threaded cable adjuster (A, Figure 5-6) to the left until the inner jam nut (C) touches the bracket.

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

7.Measure the gap by repeating Step 3. Readjust as needed by repeating Steps 5 and 6.

8.Reinstall the belt cover.

A B

Figure 5-5: Measure cable wire length to check for correct reverse belt tension.

D C A

Figure 5-6: Move threaded adjuster (A) to left to increase belt tension.

Replacement Belt Information

If the drive belt needs to be replaced, see your local authorized dealer or 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 mechanical ability and commonly available tools.

ENGINE CLEANING

Keeping the engine clean will help to en- sure smooth operation and prevent dam- age from overheating. Refer to the Engine Owner’s Manual for engine cleaning ser- vice intervals and instructions. Be sure that the muffler is cool before servicing the engine.

AIR CLEANER SERVICE

The air cleaner filters dirt and dust out of the air before it enters the carburetor. Op- erating the engine with a dirty, clogged air filter can cause poor performance and damage to the engine. Never operate the engine without the air cleaner installed. In- spect and service the air cleaner more of- ten if operating in very dusty or dirty conditions. Refer to the engine Owner’s Manual for air cleaner service intervals and instructions.

ENGINE OIL SERVICE

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

It is recommended that you change the motor oil after every 10 hours of operation and even sooner when operating in ex- tremely dirty or dusty conditions. Refer to the Engine Owner’s Manual for detailed service instructions.

A. To Check the Engine Oil Level:

1.Park the tiller on a level area and shut off the engine.

2.Level the engine (use the Depth Regu- lator Lever to adjust the engine angle).

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Troy-Bilt 630C-Tuffy manual Forward Clutch Bail Adjustment, Engine Cleaning AIR Cleaner Service Engine OIL Service
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630C-Tuffy specifications

The Troy-Bilt 630C-Tuffy stands out as a reliable and robust garden tiller designed for homeowners and gardening enthusiasts looking to cultivate their gardens with ease. This tiller is particularly noted for its performance, durability, and user-friendly features, making it a favored choice among many.

One of the most prominent characteristics of the 630C-Tuffy is its powerful 208cc engine, which provides ample power for breaking up hard soil, turning compacted ground, and mixing in compost or fertilizers. This engine ensures that the tiller can handle a variety of tasks, from light tilling in a small garden to more demanding projects. The tiller features a 16-inch tilling width, allowing users to cover a significant area in a shorter amount of time while the adjustable tilling depth can be set from 1 to 7 inches to suit specific gardening needs.

A standout technology utilized in the Troy-Bilt 630C-Tuffy is its Counter-Rotating Tines (CRT). This innovation allows the tines to turn in the opposite direction of the wheels, creating a more effective and efficient tilling action. This design not only aids in breaking up the soil more thoroughly but also reduces the likelihood of the tiller becoming bogged down in tougher soil conditions.

The tiller is built with a sturdy steel frame and heavy-duty tines that ensure longevity and reliability even with repeated use. Its 6-position adjustable handle offers comfortable operation, enabling users to customize the height according to their preference, which helps reduce fatigue during long tilling sessions. Moreover, the Troy-Bilt 630C-Tuffy is equipped with a bump start feature, making it easy to start and operate.

For added convenience, this tiller features large, durable wheels that enhance maneuverability across various terrains, providing improved stability and traction. The 630C-Tuffy also boasts a folding handle for easier storage, allowing users to save space in their garages or sheds when not in use.

In summary, the Troy-Bilt 630C-Tuffy combines power, technology, and user-friendly features to deliver a top-tier gardening tool. With its ergonomic design, efficient tilling capabilities, and strong build, it is a valuable addition to any garden enthusiast's toolkit, ready to turn soil and nurture thriving gardens.
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