Briggs & Stratton MB (18 HP) owner manual Case of a clogged or plugged mower deck, Maintenance

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Safety Instructions

9.Watch for holes, rocks, and roots in the terrain and for other hidden hazards. When mowing tall grass, mow higher than desired to expose any hidden obstacles. Then, clean the area and mow to the desired height.

10.Avoid sudden starts or stops. Before backing the machine up, look to the rear to be sure no one is behind the machine. Watch carefully for traffic when crossing or working near roadways.

11.Disengage the blade drive when transporting the machine across drives, sidewalks, etc. Never raise the mower deck while blades are rotating.

12.The maximum recommended side slope operating angle is 20 degrees or 33% grade. When operating the machine on a slope, reduce speed and use caution to start, stop, and maneuver. To prevent tipping or loss of control of the machine, avoid sharp turns or sudden changes in direction.

13.Never adjust cutting height with the engine running. Before adjusting cutting height or servicing, disengage the blade clutch (PTO), stop the engine, and remove the ignition key. Wait for all movement to stop before getting off the seat.

NOTE: The electric clutch brake should nor- mally stop drive line rotation within five (5) sec- onds of disengaging the PTO clutch.

14.For side discharge mower decks, do not oper- ate with the grass deflector chute removed. Keep the deflector in the lowest possible position.

15.When using the tilt-up deck, observe the fol- lowing recommendations:

a.Do not move tractor with deck in tilt-up po- sition.

b.Never tilt body forward with deck in tilt-up position.

16.In case of a clogged or plugged mower deck:

a.Disengage the blade clutch (PTO) and turn the engine off before leaving the seat.

b.LOOK to make sure blade drive shaft move- ment has stopped before trying to unclog the system.

c.Disconnect the spark plug wires.

d.Never place hands under the deck use a stick or similar tool to remove clogged ma- terial.

17.If the cutting blades strike a solid object or the machine begins to vibrate abnormally, immediately disengage the blade clutch (PTO), stop the engine, and wait for all moving parts to stop. To prevent accidental starting, disconnect the spark plug wires. Thoroughly inspect the mower and repair any damage before restarting the engine and operating the mower. Make sure cutter blades

are in good condition and blade nuts are torqued to 60 ft-lb (81.3 Nm).

18.Do not touch the engine or muffler while the engine is running or immediately after stop- ping the engine. These areas may be hot enough to cause serious burns.

19.When leaving the machine unattended, dis- engage the blade clutch (PTO), stop the engine, and remove the key.

MAINTENANCE

1.To prevent accidental starting of the engine when servicing or adjusting the machine, re- move the key from the ignition switch and dis- connect the spark plug wires.

2.To reduce fire hazards, keep the engine free of grass, leaves, excessive grease, and dirt.

3.Keep all nuts, bolts, and screws tight to ensure the machine is in a safe, working condition. Check the blade mounting nuts frequently, mak- ing sure they are tight.

4.Perform only maintenance instructions de- scribed in this manual. Unauthorized main- tenance operations or machine modifications may result in unsafe operating conditions.

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Contents Illustrated Parts Manual Foreword Table of Contents Spread Tail Wheel Axle KIT Main ComponentHydrostatic Ground Steering Control AssembliesFill In By Purchaser General InformationGlossary Identifying Number LocationsServicing of Engine and Drivetrain Components Transmission SpecificationsEngine Electrical SystemBlade Drive Tire SizeTire Pressure FRAME/BODY Construction Mower DeckDrive Belts SeatFront View and Right Side View Component IdentificationRear View and Left Side View Top View Body Raised Safety Instructions Before OperatingDo not mow with bystanders in the area Operating Case of a clogged or plugged mower deck MaintenanceSafety Instructions SAFETY, CONTROL, and Instruction Decals SAFETY, CONTROL, and Instruction Decals Deck Caster Wheel Installation Assembly InstructionsSetup Instructions Battery ServicePTO Shaft Connection PTO Shaft Guard InstallationDeck Installation Mower Deck InstallationDeck Counterweight Spring Installation Deck Leveling Body Rod in Stowed Position Body Rod in Engaged PositionCheck Engine Crankcase OIL Level Adjust Mower Cutting HEIGHT, if RE- Quired Operating Instructions Control IDENTIFICATION, LOCATION, and FunctionOperating Controls Choke and Throttle Location Forward Speed Control FSC PTO SwitchEngine Choke Engine ThrottleHydro Lockout Rod Location Hourmeter Operating Controls Top View from Drivers Point of View Left Wheel Right Wheel Steering LeverAdjusting Ground Speed and Steering Starting the EngineDisengaged Correct Operator Hand Position on the Controls Blade Clutch Engaged Blade Clutch Disengaged Engaging the MowerStopping the Machine Cutting Height AdjustmentRecommendations for Mowing Transaxle LockoutsHydro Lockout Rod Freewheel Position Hydro Lockout Rod Normal Operating PositionMaximum Recommended Side Slope Side Discharge Shield in Lowest PositionService Item 100 250 Daily Hours Yearly Maintenance InstructionsImportant Tips for Care of the Briggs & Stratton Engine Dipstick Operating Range LubricationEngine Oil Each USEGrease Fitting and Oil Point Lubrication Dipstick and Oil Fill View from above left side of tractorLubrication Maintenance Instructions Transaxle Lubrication Mower Deck Gearbox LubricationTransaxle Drain Plugs View from underside of tractor CleaningKeep Engine Screen Clean Transaxle Oil Filter LocationClean Cooling Fins and Fan Air Cleaner System CleaningCHECKING/SERVICING Deck Secured in Tilt-Up PositionTire Pressure BatteryCleaning the Terminals Batteries Produce Explosive GasesMower Blade Profile For Sharpening Blade Balanced on Magnetic Wall-Mounted BalancerDrive Belts Belt Locations REPLACING/REPAIRINGSpark Plugs Breaker PointsEngine/PTO Belt Engaged Engine/PTO BeltRemove Belt Guard Engine/PTO Belt DisengagedGround Drive Belt Assembly Engaged Ground Drive Belt Assembly DisengagedPTO Shear Pin Fuel FilterFuel Filter Location Cutting Blade Shear BoltsMower Blades Steering Handles Adjustment Step AdjustmentsSteering Lever Position Adjustment Step Stop Bolt Location Stop Bolt AdjustmentActuator Rod Length Adjustment Steering Lever AdjustmentNeutral Position Adjustment Step FSC Position Steering AdjustmentNeutral Travel End Full Forward Speed Adjustment StepStraight Tracking Adjustment Step Neutral WindowForward Speed Control Friction Adjustment Step Neutral Travel End AdjustNeutral Switch Adjustment Step FSC Switch LocationTilt-Up Deck Adjustable Stop ADJUSTMENTS/ Electrical System0DLQWHQDQFHHFDOV 75$&725&$/6Refer to Decks Parts Manual 13 for Deck Decals KDVVLV$VVHPEO\ +$66,6$660%7LOW8S/DWFK$VVHPEO\ DvwhqhuvF009 372ULYH$VVHPEO\ Dvwhqhuv $,1&203211732575$160,66,21F051 5283 XHO7DQN$VVHPEO\KRNHDQG7KURWWOH$VVHPEOLHV F392 +5267$7,&*52815,9$660%/,6 URXQGULYH$VVHPEOLHV3DUNLQJ%UDNH$VVHPEO\ F066 675,1*&21752/$660%/,6 6WHHULQJ/HYHU6&$VVHPEOLHV Dvwhqhuv7UDQVPLVVLRQ6SULQJ$VVHPEOLHV F183 OHFWULFDO$VVHPEO\ Dvwhqhuv 75,&$/$660%Detail a 6SUHDG$OH.LW Dvwhqhuv 635$7$,/+/$/.,7F016 6&+0$7 Limited Warranty For Walker Model MB Rider Mower Sound Test Sound Model MB