Lawn-Boy 520R Operator'S Manual Download Page 1

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Operator’s Manual

Domestic English (EN)

Form No. 3326-623 Rev B

520R and 720E

Snowthrower

Model No. 28225—220000001 and Up
Model No. 28226—220000001 and Up

Summary of Contents for 520R

Page 1: ...Operator s Manual Domestic English EN Form No 3326 623 Rev B 520R and 720E Snowthrower Model No 28225 220000001 and Up Model No 28226 220000001 and Up ...

Page 2: ...g the Discharge Chute 11 Snowthrowing Tips 11 Maintenance 12 Recommended Maintenance Schedule 12 Adjusting the Control Cable 12 Replacing the Scraper 13 Replacing the Rotor Blades 14 Page Replacing the Spark Plug 15 Replacing the Drive Belt 16 Emptying the Fuel Tank 16 Storage 17 Preparing the Fuel System 17 Preparing the Engine 17 Preparing the Snowthrower 17 Folding the Handle 17 Troubleshooting...

Page 3: ...I OPEI B71 3 1995 standard and the ISO 8437 1989 standard Training Read the operator s manual carefully Be thoroughly familiar with the controls and the proper use of the equipment Know how to stop the unit and disengage the controls quickly Never allow children to operate the snowthrower Never allow adults to operate the snowthrower without proper instruction Keep the area of operation clear of a...

Page 4: ...er and space heaters and clothes dryers Allow the engine to cool before storing in any enclosure Always refer to this operator s manual for important details if the snowthrower is to be stored for an extended period Maintain or replace safety and instruction labels when necessary Lawn Boy Snowthrower Safety The following list contains safety information specific to Lawn Boy products or other safet...

Page 5: ...Safety decals and instructions are easily visible to the operator and are located near any area of potential danger Replace any decal that is damaged or lost 60 9480 61 4790 Model 28226 104 2767 104 2775 104 4135 105 2963 Model 28225 ...

Page 6: ... téléphone des services de vente et d après vente aux Etats Unis 1 800 526 6937 Lawn Boy Inc Bloomington MN INFORMATION IMPORTANTE CONCERNANT LE MOTEUR Assembly Note Determine the left and right sides of the snowthrower by standing in the normal operating position Loose Parts DESCRIPTION QTY USE Carriage bolts Locknuts Washers Discharge chute 3 3 3 1 Installing the discharge chute Screws Locknuts ...

Page 7: ...trated in Figure 4 and squeeze the control bar and insert it into the handle 1 2 5 4 m 5533 m 2708 1 2 3 6 4 Figure 4 1 Top hole 2 Bottom hole 3 1 16 to 1 8 inch 2 to 3 mm gap 4 Control bar 5 Spring cover 6 Control cable 5 Fully insert the handle locks 6 Tighten the knobs until they are snug 7 Ensure that a 1 16 to 1 8 inch 2 to 3 mm gap exists between the control bar and the handle Refer to Adjus...

Page 8: ... 7 1 Discharge chute 2 Chute ring 2 Align the hole in the back of the chute with the center hole in the ring Fig 7 3 Install a screw a washer and a locknut through the center holes with the locknut on the outside Fig 7 Note You can rotate the chute ring for easier assembly 4 Install the screws washers and locknuts through the remaining holes with the locknuts on the outside 5 Tighten all locknuts ...

Page 9: ...iting the gasoline A fire or explosion from gasoline can burn you and others and damage property Always place gasoline containers on the ground and away from your vehicle before filling Do not fill gasoline containers inside a vehicle or on a truck or trailer bed because interior carpets or plastic truck bed liners may insulate the container and slow the loss of any static charge When practical re...

Page 10: ...hoke is just below the control panel Fig 9 2 3 5 4 6 642 1 Figure 9 1 Choke 2 Key switch 3 Primer 4 Recoil start 5 Electric start button electric start model only 6 Cord connection electric start model only Starting the Engine 1 Turn the key to the On position and pull the choke out 2 Cover the hole in the center of the primer with your thumb and push the primer in twice In extremely cold temperat...

Page 11: ...damage the chute handle Model 28226 only Rotate the chute crank clockwise to move the discharge chute to the right or counterclockwise to move the chute to the left Fig 11 The chute deflector handle on top of the discharge chute controls the height of the snow stream Do not overtighten the chute deflector mounting locknuts 1 2 3 629 Figure 11 1 Chute deflector handle 2 Deflector mounting locknuts ...

Page 12: ...cessary Replace the scraper when you replace the rotor blades Refer to Replacing the Rotor Blades on page 14 and to Replacing the Scraper on page 13 Inspect the scraper and replace it if necessary If the rotor blades are partially or completely worn replace the rotor blades when you replace the scraper Refer to Replacing the Scraper on page 13 and to Replacing the Rotor Blades on page 14 Inspect t...

Page 13: ...le end into the bottom hole in the control bar 5 Check the adjustment refer to steps 2 and 3 above After extended use the drive belt may wear and lose its proper belt tension Improper belt tension causes the belt to slip and decreases the performance under a heavy load Belt slippage may occur after 2 or 3 seasons of normal usage 10 to 15 hours If the drive belt slips continuously squeals under a h...

Page 14: ...17 1 Scraper 2 Carriage bolts and locknuts 3 9 Remove the scraper by sliding it to the right and down 10 Install the new scraper to the housing using the carriage bolts and the locknuts 11 Connect the wire to the spark plug 12 Install the control panel with the screws 13 Insert the key in the switch Replacing the Rotor Blades Before each season inspect the rotor blades for wear When a rotor blade ...

Page 15: ... inside of the curve Fig 20 If you do not install the blades properly the blades may be out of balance and cause the snowthrower to hop or bounce 2 Insert the new rotor blade between the rotor halves 3 Secure the rotor blade to the rotor halves with 2 hex head screws 2 spacers and 2 locknuts positioning the bolt heads on the thick side of the blade Fig 19 4 Curve the rotor blade and secure it with...

Page 16: ...pping screw 4 Short self tapping screws 7 Pull up on the idler pulley and remove the drive belt from the rotor pulley the brake arm assembly and the engine pulley Fig 23 4 2 1 6 3 5 626 Figure 23 1 Engine pulley 2 Idler pulley 3 Roller 4 Brake arm assembly 5 Rotor pulley 6 Belt guide 8 Loop the new drive belt around the engine pulley under the idler pulley over the roller through the brake assembl...

Page 17: ... and run it until it stops 6 Choke or prime the engine start it a third time and run the engine until it will not start 7 Dispose of unused fuel properly Recycle it according to local codes or use it in your automobile Note Do not store stabilized fuel for more than 90 days Preparing the Engine Follow this procedure to prevent cylinder bore corrosion by closing both the intake and exhaust ports of...

Page 18: ...e On position and press the primer 2 times 3 The fuel tank is empty or the fuel system contains stale fuel 3 Drain and fill the fuel tank with a fresh gasoline and oil mixture not more than 30 days old If the problem persists contact an Authorized Service Dealer 4 The engine is flooded 4 Move the choke to the Off position and pull the rope several times to clear out the rich fuel and air mixture f...

Page 19: ...off the pulley 6 Inspect the drive belt and install or replace it 7 The drive belt is worn or broken 7 Replace the drive belt 8 The rotor blades are worn 8 Replace the rotor blades and the scraper Snowthrower does not properly clear snow off the surface 1 The snow on the surface to be cleared is compacted down 1 Throw the snow off the surface before it becomes compacted 2 The front of the snowthro...

Page 20: ...ranty and special emission system coverage on some products This warranty does not cover the following Any repairs on products used commercially Normal maintenance including replacement of spark plugs fuel filter and carburetor adjustments Oil change and lubrication Repairs or adjustments due to the following failure to follow proper maintenance procedures snowthrower auger paddles striking an obj...

Page 21: ...Date Storage Preparation Check Spark Plug Hours Used Part No 374 0049 Rev ...

Page 22: ...ranty repairs should be completed in a reasonable amount of time not to exceed thirty 30 days If you have any questions regarding your warranty rights and responsibilities or if you need a referral to a Lawn Boy Service Dealer please feel free to contact us at Customer Service Department Lawn Boy Warranty Company 8111 Lyndale Avenue South Bloomington MN 55420 1196 952 888 8801 or 800 LB MOWER 800 ...

Page 23: ...t a warranty station General Conditions Neither Lawn Boy nor Lawn Boy Warranty Company is liable for indirect incidental or consequential damages in connection with the use of the Lawn Boy Products covered by this warranty except for damages to other engine components caused by the failure of a warranted part still under warranty All implied warranties of merchantability that the product is fit fo...

Page 24: ...the maintenance procedures described in the operator s manual Such routine maintenance whether performed by a dealer or by you is at your expense Items and Conditions Not Covered There is no other express warranty except for special emission system coverage on some products This express warranty does not cover Cost of regular maintenance service or parts such as filters fuel lubricants and tune up...

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