Traction Control / Auger Control Lock

The cams on the ends of the control rods which interlock the traction drive and auger drive controls must be lubricated at least once a season or every 25 hours of operation. The cams can be accessed beneath the handle panel. Use a multi-purpose automotive grease.

Engine

Refer to the separate engine manual packed with your unit for all engine lubrication instructions.

IMPORTANT: When following instructions in separate engine manual for draining oil, be sure to protect frame to avoid oil dripping onto transmission parts.

SECTION 7: SERVICE

WARNING: Before servicing, repairing, or inspecting, disengage all clutch levers and stop engine. Wait until all moving parts have come to a complete stop. Disconnect spark plug wire and ground it against the engine to prevent unintended starting.

Engine

Refer to the separate engine manual packed with your unit for all engine related maintenance procedures.

Augers

•The augers are secured to the spiral shaft with two shear bolts and hex lock nuts. If you hit a hard foreign object or ice jam, the snow thrower is designed so that the bolts may shear.

Refer to Figure 13.

•If the augers will not turn, check to see if the bolts have sheared. Replacement shear bolts and hex lock nuts have been provided with the snow thrower. When replacing bolts, spray an oil lubricant into shaft before inserting new bolts.

IMPORTANT: NEVER replace the auger shear bolts with standard hex bolts. Any damage to the auger gearbox or other components as a result of doing so will NOT be covered by your snow thrower’s warranty.

Shave Plate and Skid Shoes

The shave plate and skid shoes on the bottom of the snow thrower are subject to wear. They should be checked periodically and replaced when necessary. To remove the skid shoes, proceed as follows:

•Remove the six carriage bolts, bell washers, and hex nuts which attach them to the snow thrower.

•Reassemble new skid shoes with the six carriage bolts, bell washers (cupped side goes against skid

shoes) and hex nuts. Make certain the skid shoes are adjusted to be level.

To remove shave plate, remove the carriage bolts, bell washers, and hex nuts which attach it to the snow thrower housing. Reassemble new shave plate, making sure heads of the carriage bolts are to the inside of the housing. Tighten securely.

Belt Removal And Replacement

Auger Belt

•Remove the plastic belt cover by removing the two self-tapping screws. See Figure 16.

•Drain the gasoline from the snow thrower.

Belt

Cover

Self-Tapping Screws

Figure 16

•Tip the snow thrower forward so that it rests on its auger housing and remove six self-tapping screws from the frame cover underneath the snow thrower.

•Roll the belt off the engine pulley. See Figure 17.

Drive Belt

Auger Pulley

Engine Pulley

Auger Belt

Idler

Pulley

Idler Pulley

Figure 17

•Unhook the idler spring from the hex bolt on the auger housing. See Figure 18.

•Back out the stop bolt until the support bracket rests on the auger pulley.

13

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Bolens 750, 550 manual Service, Engine, Augers, Shave Plate and Skid Shoes, Belt Removal And Replacement
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750, 550 specifications

The Bolens 750 and 550 are robust garden tractors renowned for their reliability and performance in lawn care and gardening tasks. Designed for both amateur and professional gardeners, these machines provide an exceptional blend of power and versatility.

The Bolens 750 features a powerful engine, typically a 17-20 HP Briggs & Stratton or Kohler, known for their durability and efficient fuel consumption. This tractor is fitted with a hydrostatic transmission system, which ensures smooth operation and ease of use. The hydrostatic system allows the user to control speed and direction effortlessly, making it an ideal choice for navigating tight spaces and varied terrains.

On the other hand, the Bolens 550 offers a slightly lower horsepower, usually around 15 HP, but maintains many of the same core features found in its counterpart. The 550 is designed for users who may need a more compact option without sacrificing performance. Both tractors have a rugged steel frame construction, ensuring longevity and strength, even when subjected to heavy-duty tasks.

A major highlight of both models is their cutting deck, available in various sizes, from 42 inches up to 54 inches. The adjustable cutting height feature allows users to set the desired grass length, providing flexibility for different lawn types and personal preferences. The side discharge option efficiently handles grass clippings, while mulch kits are also available for those who prefer returning nutrients to the soil.

One significant technological advancement in the Bolens 750 and 550 models is their ergonomic design. The comfortable seating, well-placed controls, and easy access points for maintenance make these tractors user-friendly. With a tight turning radius, they excel in maneuverability, making them suitable for properties with intricate landscaping.

Moreover, both tractors come equipped with standard rear and front hitch capabilities, allowing for the attachment of various accessories, such as snow plows, tillers, and aerators. This versatility makes them indispensable tools for year-round yard care and maintenance.

In summary, the Bolens 750 and 550 stand out with their powerful engines, innovative features, and rugged build quality. They cater to a variety of gardening and landscaping needs, offering users unmatched reliability and efficiency in their outdoor tasks. Whether you are tackling expansive gardens or compact lawns, these tractors deliver performance that can help transform any landscape with ease and precision.
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