Troy-Bilt 640C - Tuffy CRT, 644A - Super Bronco CRT manual Tiller Lubrication, Check Hardware

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SECTION 5: MAINTENANCE

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. Remove ignition key on electric start models.

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

MAINTENANCE SCHEDULE

PROCEDURE

NOTES

Check motor oil level

2, 3

Clean engine

2, 7

Check drive belt tension

1, 4

Check nuts and bolts

1, 4

Change motor oil

4, 6, 9

Lubricate tiller

4

Service engine air cleaner system

7

Check gear oil level in transmission

1, 5

Check tines for wear

5

Check air pressure in tires

5

(if unit has pneumatic tires)

 

Service spark plug

7

NOTES

1 - Check after first 2 hours of break-in operation. 2 - Before each use.

3 - Every 5 operating hours.

4 - Every 10 operating hours.

5 - Every 30 operating hours.

6 - Change more frequently in dusty conditions.

7 - See Engine Owner’s Manual for service recommendations.

8 - Whichever time interval occurs first.

9 - Change after first 2 hours of break-in

TILLER LUBRICATION

After every 10 operating hours, oil or grease the lubrication points shown in Figure 5-1 and described below.

Use clean lubricating oil (#30 weight motor oil is suitable) and clean general purpose grease (grease containing a metal lubricant is preferred, if available).

•Remove the wheels, clean the wheel shaft (A, Fig. 5-1) and apply a thin coating of grease to the wheel shaft.

•Grease the back, front and sides of the depth regulator lever (B, Fig. 5-1).

•Remove the tines and clean the tine shaft (C, Fig. 5-1). Use a file or sandpaper to gen- tly remove any rust, burrs or rough spots (especially around holes in shaft). Apply grease to ends of shaft before installing tines.

•Oil the threads on the handlebar height adjustment screws and the handlebar attaching screws (D, Fig. 5-1).

DB

AC

If a cover is leaking, check for loose screws. If the screws 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 needs to be replaced. See your authorized dealer or contact the factory for service or advice.

IMPORTANT: Never operate the tiller if the transmission is low on oil. Check the oil level after every 30 hours of operation and whenever there is any oil leakage.

CHECK HARDWARE

Check for loose or missing hardware af- ter every 10 operating hours and tighten or replace (as needed) before reusing tiller

Be sure to check the screws underneath the tiller hood that secure the transmis- sion cover and the Depth Regulator Lever to the transmission.

CHECK TIRE PRESSURE

(Models with pneumatic tires)

Check the air pressure in both tires. The air pressure should be between 15 PSI and 20 PSI (pounds per square inch).

Keep both tires equally inflated to help prevent machine from pulling to one side.

TRANSMISSION

GEAR OIL SERVICE

Check the transmission gear oil level after every 30 hours of operation or whenever you notice any oil leak. Oper- ating the tiller when the transmission is low on oil can result in severe damage.

Figure 5-1

CHECK FOR OIL LEAKS

Before each use, check the tiller for signs of an oil leak — usually a dirty, oily accumu- lation either on the unit or on the floor.

A little seepage around a cover or an oil seal is usually not a cause for alarm. How- ever, if the oil drips overnight, then imme- diate attention is needed. Ignoring an oil leak can result in severe transmission damage!

A. To Check the Transmission Gear Oil Level:

1.Check the gear oil level when the transmission is cool. Gear oil will expand in warm operating temperatures and this expansion will provide an incor- rect oil level reading.

2.With the tiller on level ground, pull the Depth Regulator Lever all the way up.

3.Remove the oil fill plug (A, Fig. 5-2) from the transmission housing and look inside the oil fill hole to locate the main drive shaft situated below the hole.

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Contents 15/04 Form no -00585C OM.fmCustomer Support Table of ContentsFinding Model Number Safety Alert Symbol SafetyExercise caution to avoid slipping or fall- ing Refer to the Maintenance sectionsKeep children and pets away Use slower engine speedsTo Avoid Serious Injury Operating SymbolsAssembly Steps AssemblyIntroduction Inspect UnitUse the handlebar to roll the tiller to a flat area Install Forward Clutch CableWith the Forward Clutch Bail Y, Fig While preventing the cable adjuster from turningCheck all nuts and screws for tightness Check Transmission OIL LevelFreewheel Ature package to identify the controls on your engineTo adjust the handlebars Travel Position Shallow SettingsTo operate the Forward Clutch Bail Stop all tiller motion by releasing the Forward Clutch BailIntroduction BREAK-IN Operation Following steps describe how to start and stop the engineStarting and Stopping Change engine oilOperating the Tiller For forward motion of the wheels and power to the tinesStopping the Engine and Tiller To move the Model 640C in reverse for short distancesTilling Tips & Techniques Tilling On Slopes Tilling Tips & Techniques CON’TClearing the Tines Read the following recommendations before tilling on slopesTerrace Gardening Loading and Unloading the TillerTiller Lubrication Transmission Gear OIL ServiceCheck Hardware Check Tire PressureRemoving⁄Installing a Tine Assembly Removing⁄Installing a Single TineBolo Tines Tine InspectionTo Check Forward Belt Tension Checking and AdjustingReplacement Belt Information Engine Cleaning AIR Cleaner Service Engine OIL Service Forward Clutch Bail AdjustmentModel 644A only To Check Reverse Belt TensionSpark Arrester Screen Service Spark Plug ServiceOFF-SEASON Storage To Change the Engine OilProblem Possible Cause Correction TroubleshootingDescription Parts ListModels 640C & 644A Models 640C & 644A GW-1325C Shim Set Incl. the following shims Front 433 Models 640C & 640A Hold Tines With Blunt End Toward You Tine ShaftPage TROY-BILT Tiller Lifetime Limited Warranty

640C - Tuffy CRT, 644A - Super Bronco CRT, 640C-Tuffy CRT, 640C-Tuffy specifications

The Troy-Bilt 640C-Tuffy and the 644A-Super Bronco CRT are exemplary models in the realm of cultivators and tillers, merging robust performance with user-friendly features. These machines are designed to make garden preparation easier and more efficient, catering to both amateur gardeners and seasoned horticulturists alike.

The Troy-Bilt 640C-Tuffy boasts a powerful engine and features a rear-tine design, enabling the user to tackle tough soil with ease. One of its main features is the Carbide Tines that effectively break up hard ground and aerate the soil, promoting healthy growth. The 640C-Tuffy is sturdy, with durable construction that ensures longevity and resilience against tough garden conditions. It also includes a 10-inch tilling width, allowing it to cover substantial ground in shorter periods. Moreover, the model is equipped with adjustable tilling depth settings, accommodating various types of gardening tasks from breaking new ground to preparing existing beds.

On the other hand, the 644A-Super Bronco CRT highlights innovative technology that makes tilling a breeze. This model features counter-rotating tines which effectively mix compost and soil, offering improved mixing and aeration. The 644A is known for its robust performance, powered by a reliable engine, which delivers consistent torque even on challenging soil types. Additionally, its 18-inch tilling width allows for broader coverage, resulting in efficient garden preparation.

Both models are equipped with ergonomic handlebars designed for operator comfort. These handlebars are adjustable, allowing users of different heights to find a comfortable grip, thus reducing fatigue during extended use. The 640C-Tuffy and 644A-Super Bronco CRT are designed with ease of operation in mind, featuring intuitive controls and a lightweight design that makes maneuvering effortless.

In terms of maintenance, both models boast easily accessible components which allow for simple servicing and routine upkeep, ensuring long-lasting performance. Additionally, these cultivators are built with safety features, including protective shields that guard against debris.

In summary, the Troy-Bilt 640C-Tuffy and 644A-Super Bronco CRT shine in their ability to combine cutting-edge technology, user-friendly operation, and robust design, making them ideal choices for anyone looking to enhance their gardening experience. Whether preparing a new garden bed or maintaining an existing one, these cultivators are engineered to deliver exceptional results with ease and confidence.
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