Troy-Bilt 42052, 42051 Engine Maintenance, Lubrication, Wheel Drive Disc Adjustment

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Section

5

Maintenance

WARNING

Moving parts on the unit can cause seri- ous personal injury.

Shut off the engine, let all moving parts stop completely, disconnect the spark plug wire and prevent it from touching the spark plug before performing any maintenance or service procedures.

ENGINE MAINTENANCE

IMPORTANT: Refer to the Engine Owner’s Manual for complete engine maintenance information.

Engine Oil

•Check the engine oil level each time be- fore starting the unit and after each 5 hours of operation. With the engine on level ground, the oil level should be at the “FULL” mark on the dipstick. Refer to the engine manual for oil specifications and complete instructions.

•Change the engine oil according to the maintenance intervals and instructions in the engine manual.

TIP: When changing engine oil, fold a piece of cardboard or aluminum foil into a shallow “V”, and position it so the oil will drain through it into the container.

To check the engine oil level:

1.Move the unit to a level surface. Stop the engine, wait for all parts to stop moving and disconnect the spark plug wire from the spark plug.

2.Remove the oil dipstick and wipe the dipstick with a clean cloth.

3.Screw the oil dipstick back into the oil fill hole. Remove the dipstick and check the oil level – it should be up to the “FULL” mark on the dipstick. If low, add oil by using the oil dipstick as a guide. Refer to engine manual for detailed instructions.

Ignition System

The engine has an electronic ignition sys- tem which does not use points or a con- denser. The spark plug is the only item re- quiring maintenance in this system.

Spark Plug

Annually or every 100 hours of operation, remove and inspect the spark plug. Replace the spark plug if the electrode is pitted or burned or if the porcelain is cracked. Refer to the engine manual for correct spark plug specifications and ser- vicing instructions.

NOTE: Use of an incorrect plug can dam- age the engine.

Carburetor

The carburetor has been adjusted at the factory and should not require additional adjustment. Refer to the engine manual or contact your dealer for additional carbure- tor information.

LUBRICATION

At the beginning and end of each season or after every 25 hours of operation, lubri- cate the unit as recommended below. The engine must be stopped and the spark plug wire disconnected before performing any lubrication.

1.Lightly oil both the discharge chute cap pivot points (A, Figure 5-1).

2.Lightly oil the discharge chute control rod pivot points where the control rod enters the control panel bearing (B, Figure 5-3), the support tab (C) and the support on the left rear of unit housing (D, Figure 5-4).

3.Remove the left wheel (E, Figure 5-1). Clean the wheel shaft and apply multi- purpose grease to the wheel shaft.

Reinstall the wheel.

4.Apply oil to the bearings on the sides of the auger shaft (F, Figure 5-1).

5.Clean dirt and old grease from the flange at the bottom of the discharge chute (G, Figure 5-1). Apply multi-pur- pose grease to the worm gear (H) and to the toothed portion of flange and the flange.

6.Lightly lubricate the handlebar control levers at pivot points (J, Figure 5-3) with oil or a non-silicone spray. Do not get oil or lubricating spray on levers.

7.Lightly oil the pivot points on the gear shift control lever (K, Figure 5-3).

8.Remove the two shear bolts (L, Figure 5-5) from the auger shaft, then lubri- cate the four auger grease fittings (M, Figure 5-5) using a grease gun. Rotate auger three or four times. Reinstall shear bolts, torque to 11 ft-lbs (15Nm).

9.Check the auger gear case oil level :

a.Place the unit on a smooth, level surface. Unscrew the plug

(N, Figure 5-5) from the front of the gear case.

b.Inspect plug hole. Oil should just begin to seep out of the hole. Add SAE 90 gear oil if necessary until oil just begins to flow out of hole. Let the excess oil drain out of the gear case.

c.Reinstall the plug (N).

10.Remove bolts (O, Figure 5-4) securing bottom cover to unit. Remove bottom cover. Put gear shift lever in highest speed setting and apply a coating of multi-purpose grease to the shafts (P and R, Figure 5-2). Prevent grease from contacting rubber drive wheel (S) or drive disk (T). If grease should con- tact these parts, wipe clean to avoid slippage and assure proper operation. Move shift lever between high speed and reverse settings to spread grease along shafts. Replace bottom cover.

WHEEL DRIVE DISC

ADJUSTMENT

Due to wear, the wheel drive control disc may begin to slip when wheel drive lever is engaged. To adjust wheel drive disc:

1.With the engine stopped and the spark plug wire disconnected, pull the wheel drive control arm (V, Figure 5-4) down completely.

2.Put the gear shift lever (AC, Figure 5- 1) in the No. 3 position.

3.Measure and note the distance be- tween the coiled ends of the spring (W, Fig, 5-4).

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Contents Snow Thrower See Back Cover for Customer Service Information Safety TrainingPreparation Keep the area of operation clearSafety OperationMaintenance and Storage Safety DecalsAssembly Inspect UnitUnpack Unit DescriptionInstall Handlebars AssemblyInstall Discharge Chute Attach Wheel Drive Control Rod Attach Chute Control RodAttach Gear Shift Control Rod Assembly Connect Wiring for Handlebar Warmers and Light Add Motor Oil to CrankcaseCheck Tire Pressure Check Auger Gear Case Oil LevelFeatures and Controls PRE-OPERATION Checklist OperationStarting the Engine Gasoline is Highly Flammable and ITS Vapors are ExplosiveOperation StoppingEmergency stopping Normal non-emergency stoppingAuger Drive Engagement Shifting GearsTransporting the Unit Snow Throwing TipsSnow Throwing Patterns Maintenance Engine MaintenanceWheel Drive Disc Adjustment LubricationMaintenance Auger Drive Belts Adjustment InstallationShear Bolts 15 NmDrive Disc Clearance Adjustment Brake ARM AdjustmentSlip Differential Adjustment OFF-SEASON StorageTroubleshooting Trouble Possible Problem SolutionAuger spins with drive lever Auger drive control lever does notEngage auger drive DisengagedRequired Maintenance Schedule ScheduleSpecifications, Optional Kits and Accessories SPECIFICATIONS/OPTIONAL Kits and AccessoriesSpecifications Optional Kits and AccessoriesRef. # Description Qty Parts ListDescription Qty Drawing no Parts List Ref. # Description104 108 203 205 204 112 111 113 110 1100045 Drawing no 1185403 Warranty Service Replacement PartsEngine Service and Repair Owner Registration Card

42051, 42052 specifications

Troy-Bilt has long been a trusted name in outdoor power equipment, and the models 42051 and 42052 continue this tradition with their robust features and reliable performance. Designed for residential lawn care and landscaping tasks, these models are primarily known for their powerful engine, ease of use, and innovative technology that cater to both novice and experienced users.

At the heart of the Troy-Bilt 42051 and 42052 is a reliable 420cc engine that delivers exceptional power for tackling various yard tasks, whether it's mowing, mulching, or bagging. The engine’s design emphasizes efficiency and ease of starting, ensuring that users can get right to work without any hassle. This engine has been engineered to minimize vibrations, which adds to the overall comfort during prolonged use.

One standout feature of both models is their adjustable cutting height. With multiple positions, users can easily customize the cutting height to suit their lawn's needs, giving them the versatility to achieve the perfect cut no matter the grass type or terrain.

Equipped with a heavy-duty steel deck, the 42051 and 42052 are designed for durability and longevity. This robust construction not only withstands rough conditions and impacts but also facilitates a smooth cutting experience, ensuring consistent results with each pass.

Another notable technology found in these mowers is the TriAction cutting system. This innovative design combines a specially designed blade with a rake that lifts grass for an even, clean cut. The system enhances bagging capability by ensuring that more clippings are efficiently collected, keeping lawns tidy and reducing the need for additional clean-up.

Both models also feature a rear bagging attachment, making it easier to collect clippings and debris as you mow. This capability is particularly advantageous for those looking to maintain a neat and well-kept lawn without the mess that often accompanies traditional mowing.

Moreover, the user-friendly controls make these mowers easy to operate. With intuitive levers and simple starting mechanisms, even those who are new to lawn care can gain confidence quickly.

Overall, the Troy-Bilt 42051 and 42052 embody the brand’s commitment to quality, performance, and user satisfaction, making them excellent choices for homeowners seeking a reliable solution for their lawn care needs. Whether tackling vast yards or smaller spaces, these mowers demonstrate power, innovation, and ease of use, fulfilling the diverse requirements of modern landscaping.
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