Troy-Bilt 52070, 52066 Belt Performance Troubleshooting, Lubrication, Cleaning the Engine

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Section 5: Maintenance

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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.

BELT PERFORMANCE

TROUBLESHOOTING

Poor belt performance (noise, overheating, cracking, etc.), can be caused by several conditions. Follow the steps below to cor- rect belt performance problems. Also use these checks after installing a new belt. After shutting the engine off and discon- necting the spark plug wire, remove the rear belt cover on the underside of the machine (refer to previous page). Release the Trimmer Head Control Bail to remove all belt tension.

1 – Belt must be routed between pulleys and guides.

Examine inside surface of belt. If it is cracked or peeling, unbolt and lower the spindle mounting plate and proceed with this step. The pulley system has two belt guides (see Figures 5-7 and 5-8) – the belt must run between the pulleys and the guides. If it doesn’t, reroute it as shown. Use masking tape to temporarily hold the belt in place while reattaching the spindle mounting plate.

2 – Minimum clearance is 1/4" on each side between rear belt guide and pulley.

If the rear belt guide (Figure 5-8) is less than 1/4" from the sides of the pulley when the Trimmer Head Control Bail is engaged, loosen the belt guide hardware and move the guide to create a clearance of at least 1/4". Tighten the hardware securely.

3– Both idler pulleys must be mounted right-side up.

Check that the two idler pulleys shown in Figure 5-9 are correctly installed – note that the longer hub on each pulley is against the idler arm. If the pulleys are upside-down, turn them over and tighten them securely.

Spindle Mounting Plate

Front Pulley

Belt Guide

Brake

Place

Tape Here

Figure 5-7

Rear

Pulley

Belt

Guide

Minimum

 

1/4" Gap

 

Figure 5-8

 

Idler Arm

 

Idler Pulley

Idler Pulley

Longer Hub

 

Figure 5-9

 

LUBRICATION

Apply light oil or a silicone-based lubricant to the following locations:

•Throttle control cable

•Control bail cable

•Nuts, bolts and other hardware

NOTE: The spindle head is permanently lubricated at the factory. There is no need for additional lubrication.

CLEANING THE ENGINE

Before each use of the machine and at each refueling, clean grass, chaff or accu- mulated debris from the finger guard area (A, Figure 5-10) on top of the engine, and from the linkage, springs and controls on the engine. Keep the area around and behind the muffler free of any combustible debris. See “Cleaning Debris” in the Engine Owner’s Manual for complete cleaning instructions. Do not use water to clean engine parts as water could contam- inate the fuel system. Use a brush or dry cloth. Be sure engine is cool before clean- ing around muffler area.

NOTE: The separate engine air cleaner must also be serviced according to the instructions in the Engine Owner’s Manual.

WARNING

Engine parts must be kept clean to reduce the risk of overheating and igni- tion of accumulated debris. This espe- cially important if cutting tall grass. Clean accumulated debris at each refuel- ing and before each use of the machine.

Failure to comply can cause injury or property damage.

A

Figure 5-10

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Contents Trimmer/Mower Table of Contents General Operation SafetyDo not Remove objects such as rocks, tree limbs, etcNever run the engine inside a closed area On right side, rear Mower deck On top of mower deck SafetyAssembly Assembly StepsIntroduction Check Trimmer Head Hardware AssemblyFrom the receptacle T AssemblyTions are used on Features and ControlsFeatures and Controls Here, with word descripOperation PRE-START ChecklistAdjust Handlebar Height Adjust Line Cutting HeightOperating the Machine Using the Trimmer Head Control BailNique allows the cutting head to follow the ground contour Exercise caution when changing direction on slopesLength Maintenance For the most precise cutting possible, be sure to selectTo Adjust Belt Tension MaintenanceMaintenance Schedule Adjusting Trimmer Head EngagementBelt Replacement Inspecting and Replacing the Drive BeltBelt Inspection Belt Performance Troubleshooting Cleaning the EngineLubrication Change the oil after every 25 hours TRIMMER/MOWER Cleaning and Debris RemovalGeneral Engine Maintenance Compact StorageTrimmer lines can be changed To Change Trimmer LinesTilt the debris shield forward Battery ServiceBattery Recharging Battery ReplacementProblem Possible Cause Correction TroubleshootingDrawing no Parts List Drawing no Ref. # DescriptionRef. # Description Qty Parts List 1915963 1910850001 715 133 Description Qty Accessories and KitsPage Owner Registration Card Warranty ServiceReplacement Parts Engine Service and Repair

52066, 52070 specifications

The Troy-Bilt 52070 and 52066 are powerful tillers designed for home gardening enthusiasts and professionals alike, offering remarkable performance and ease of use. Troy-Bilt, a well-known brand in gardening equipment, has incorporated advanced features and technologies in these models to enhance tilling efficiency and ensure user comfort.

One of the standout features of the Troy-Bilt 52070 and 52066 tillers is their robust engine options. Both models come equipped with a reliable 160cc OHV engine, providing ample power to tackle tough soil types and overgrown garden beds. This engine delivers consistent performance, ensuring that users can complete their tilling tasks in a timely fashion.

The tilling width ranges from 16 to 21 inches, allowing for versatile usage depending on the size of the garden or area being worked on. The adjustable tilling depth, reaching up to 7 inches, ensures that users can cultivate the soil to the desired texture, whether for planting or aerating purposes.

Another innovative aspect of these tillers is the patented Bolo tilling blades. These specially designed blades are engineered to break up tough soil effectively, reducing the amount of effort required and increasing the depth of cultivation. The blades are made from durable materials, ensuring longevity and consistent performance even under demanding conditions.

The Troy-Bilt 52070 and 52066 also feature a user-friendly design, making them accessible to gardeners of all skill levels. The adjustable handlebars offer customizable height settings, enhancing comfort during operation. Additionally, both models are equipped with a forward and reverse self-propulsion system, giving users better control and maneuverability in tight spaces and while navigating through obstacles.

Furthermore, these tillers include a check plug feature for easy oil maintenance, ensuring optimal engine performance over time. The removable and adjustable side shields assist with debris management, keeping the work area tidy and safe.

In conclusion, the Troy-Bilt 52070 and 52066 tillers combine powerful performance with user-friendly features, making them ideal for anyone looking to cultivate their garden efficiently. With their durable construction, advanced tilling technology, and thoughtful design, these models represent a reliable investment for both novice and experienced gardeners.
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