Bolens 550, 750 manual Troubleshooting, Problem Cause Remedy

Page 16

SECTION 8: TROUBLESHOOTING

Problem

 

Cause

 

Remedy

 

 

 

 

 

Engine fails to start

1.

Fuel tank empty, or stale fuel.

1.

Fill tank with clean, fresh gasoline.

 

 

 

 

Fuel becomes stale after thirty days

 

 

 

 

unless a fuel stabilizer is used.

 

2.

Blocked fuel line.

2.

Clean the fuel line.

 

3.

Choke not in ON position

3.

Move switch to ON position

 

4.

Faulty spark plug.

4.

Clean, adjust gap or replace.

 

5.

Safety key not in ignition switch on engine.

5.

Insert the key fully into the switch.

 

6.

Spark plug wire disconnected.

6.

Connect spark plug wire.

 

7.

Primer button not being used properly.

7.

Refer to the engine manual for proper

 

 

 

 

priming instructions.

 

8.

Fuel shut-off valve closed.

8.

Open fuel shut-off valve.

Engine runs erratic

1.

Unit running on CHOKE.

1.

Move choke lever to OFF position.

 

2.

Blocked fuel line or stale fuel.

2.

Clean fuel line. Refill with fresh fuel.

 

3.

Water or dirt in fuel system.

3.

Drain fuel tank and carburetor. Refill

 

 

 

 

with fresh fuel.

 

4.

Carburetor out of adjustment.

4.

Refer to the engine manual packed

 

 

 

 

with your unit or have carburetor

 

 

 

 

adjusted by an authorized engine

 

 

 

 

service dealer.

Loss of power

1.

Spark plug wire loose.

1.

Connect and tighten spark plug wire.

 

2.

Gas cap vent hole plugged.

2.

Remove ice and snow from gas cap.

 

 

 

 

Be certain vent hole is clear.

 

3.

Exhaust port plugged.

3.

Refer to the Maintenance section of

 

 

 

 

the engine manual.

Engine overheats

1.

Carburetor not adjusted properly.

1.

Refer to the engine manual or have

 

 

 

 

the carburetor adjusted by an

 

 

 

 

authorized engine service dealer.

Excessive vibration

1.

Loose parts or damaged auger.

1.

Stop engine immediately and

 

 

 

 

disconnect spark plug wire. Tighten all

 

 

 

 

bolts and nuts. If vibration continues,

 

 

 

 

have unit serviced by an authorized

 

 

 

 

service dealer.

Unit fails

1.

Traction control cable in need of

1.

Adjust traction control cable. Refer to

to propel itself

 

adjustment.

 

Making Adjustments Section.

 

2.

Drive belt loose or damaged.

2.

Replace drive belt. Refer to the

 

 

 

 

Service.

Unit fails

1.

Discharge chute clogged.

1.

Stop engine immediately and

to discharge snow

 

 

 

disconnect spark plug wire. Clean

 

 

 

 

chute area and auger housing.

 

2.

Foreign object lodged in auger.

2.

Stop engine immediately and

 

 

 

 

disconnect spark plug wire. Remove

 

 

 

 

object from auger.

 

3.

Auger control cable in need of adjustment.

3.

Adjust auger control cable. Refer to

 

 

 

 

the Making Adjustments Section.

 

4.

Auger belt loose or damaged.

4.

Refer to the Service Section.

 

5.

Shear bolt(s) sheared.

5.

Replace shear bolt(s).

16

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Contents OPERATOR’S Manual Table of Contents Important Safe Operation Practices TrainingPreparation OperationMaintenance And Storage Your ResponsibilityAssembly Assembling Your Snow ThrowerUnpacking Loose PartsFinal Adjustments Auger Control AdjustmentSkid Shoe Adjustment Traction Control and Shift Lever AdjustmentKnow Your Snow Thrower Auger Drive ControlOperating Your Snow Thrower Electric Starter If Equipped Recoil StarterTo Stop Engine To Engage DriveSkid Shoe Adjustment Chute Assembly AdjustmentAuger Control Adjustment Chute Directional Control And Support Bracket AdjustmentShift Rod Adjustment Drive WheelsMaintaining Your Snow Thrower LubricationService Belt Removal And ReplacementEngine AugersServicing Friction Wheel Rubber Drive BeltOff-season Storage Troubleshooting Problem Cause RemedyModels 550 Part DescriptionDrive Clutch Cable Auger Clutch Blower Housing Models 550 Models 550 710-0604 Models 550 748-0360 Pulley 26 -0654A Hex Washer Screw 3/8-16 x 629-0071 Light ass’y Model 550 Page Page MANUFACTURER’S Limited Warranty for

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.