Briggs & Stratton MB (18 HP) Engine Choke, Engine Throttle, Steering Levers, PTO Switch

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Operating Instructions

Engine Choke

The choke control lever (black knob) is located on the left side of the seat. To start a cold engine, move the choke control forward to the ON position. After engine starts, move choke control toward the OFF position, keeping enough choke to allow the engine to run smoothly as it warms up. As soon as possible, move the choke to the OFF position. A warm engine requires little or no choke for starting.

IMPORTANT: Make sure the choke is in the OFF position during normal engine operation; running with the choke in the ON position CAN damage the engine.

Engine Throttle

The throttle control lever (red knob) is located on the left side of the seat and is used to control engine speed. Moving the lever forward toward the FAST position increases engine speed; moving it back- ward toward the IDLE position decreases engine speed.

ThrottleChoke

Choke and Throttle Location

Forward Speed Control (FSC)

Forward Speed Control (FSC) has two functions: One is to set forward travel speed, and the other is to establish the NEUTRAL-PARKposition. When the FSC lever is moved into the FORWARD position, a friction lock holds any forward speed setting from 0 to 7 mph (0 to 11.3 km/h). The ground speed is pro- portional to the lever position; the further the lever is advanced forward, the faster the tractor moves. It is not necessary to hold the FSC in position since the friction lock maintains the selected lever position. Pulling back on the steering levers overrides the FSC setting and slows or stops forward travel. Releasing the steering levers allows the tractor to resume forward travel at the speed set by the FSC lever. To stop and park the machine, the FSC lever is moved backward to the NEUTRAL-PARKposition.

Steering Levers

Each drive wheel is controlled by its own indepen- dent steering lever, for both steering function and FORWARD/REVERSE motion. The FSC lever sets the maximum forward speed, and also sets the for- ward position of the steering levers. The steering levers operate only with a backward pulling move- ment of the lever, which causes the drive wheel for that lever to first slow down, stop, and then reverse with a full backward lever stroke. The levers are released to the FORWARD position for “straight- ahead” ground travel.

NOTE: Pushing forward on the steering levers will not cause any change in tractor motion - there will be no steering lever reaction and there will be no machine damage.

PTO Switch

The PTO toggle switch is located on the RH front of the body and has two positions: ON (ENGAGE) and OFF (DISENGAGE) - positioning switch "ON" acti- vates the electromagnetic blade drive clutch while the blade brake is applied when the switch is moved to "OFF".

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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
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