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605046

2-1

REV A

SAFETY PRECAUTIONS

This safety alert symbol is used to call attention to a message

intended to provide a reasonable degree of 

PERSONAL

SAFETY

 for operators and other persons during the normal

operation and servicing of this equipment. 

This manual uses two other words to highlight information.

IMPORTANT

 calls attention to special mechanical information

and 

NOTE

 emphasizes general information worthy of special

attention.

All operators and mechanics should read this manual, and be

instructed about safe operating and maintenance procedures. If
the operators or mechanics cannot read and understand English,
it is the owner’s responsibility to explain this material to them.

Improper use or maintenance by the operator or owner can

result in injury. To reduce the potential for injury, comply with
these safety instructions and always pay attention to the safety
alert symbol “

”, which means DANGER or WARNING -

“personal safety instructions.” Failure to comply with the
instructions may result in personal injury or death.

Incorrect usage of this mower may result in severe injury.

Personnel operating and maintaining it should be trained in
the proper use and should read the manuals completely and
thoroughly before attempting to set-up, operate, adjust, or
service this mower.

Safety And Instructions Decals

The decals are designed to give the operator brief information

needed in the daily operation and service of the mower. These
decals are not intended to be used in place of this manual but
instead are to be used as an extension of this manual. These
decals should not be removed or obliterated. Replace these
decals if they become unreadable.

• It is the 

owner’s responsibility

 to make certain that the

operators and mechanics read and understand this manual
and all decals before operating this mower. 

• It is also the 

owner’s responsibility

 to make certain that

the operators and mechanics are qualified and physically
able individuals, properly trained in the operation of this
equipment. 

• All operators and mechanics must become familiar with

the safe operation of the equipment, operator controls
and decals. 

• Never let children or untrained people operate or service

the equipment. Local regulations may restrict the age of
the operator.

• The owner/user can prevent and is responsible for acci-

dents or injuries occurring to themselves, other people or
property.

• The owner should also ensure that the operators/mechan-

ics know that they are responsible for their own safety as
well as the safety of other persons within the vicinity.

Remember,

 the operator is responsible for accidents or

hazards occurring to other people or their property.

The following illustrations show the various safety decals that

are located on the mower. A brief explanation, for those
requiring one, is shown to help the operator understand the
meanings of these decals.

  

DANGER

– denotes immediate hazards which WILL result in
severe personal injury or death.

WARNING

– denotes a hazard or unsafe practice which COULD
result in severe personal injury or death.

WARNING

Specific safety warning decals are located on the equip-
ment near the immediate areas of potential hazards. These
decals should not be removed or obliterated. Replace
them if they become non-readable.

Read Operator’s Manual and Safety Warning Decals before 
attempting to operate this machine.

Do not smoke while refueling.

Do not remove the fuel tank cap or fill tank with engine running 
or while the engine is hot.

Allow engine to cool before storing machine inside a building.

Store away from open flame or spark if there is fuel in tank.

Clean up any gasoline spills.

Do not refuel while in enclosed trailer or other enclosed areas.

Maximum of 10% ethanol (E10) in fuel. Fuels with greater than 
10% ethanol, (such as E15, E20 and E85) voids warranty. Fuels 
with greater than 10% ethanol are not approved for use and 
such illegal use could cause equipment failure and pose a fire 
hazard.

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Summary of Contents for Alpha MP

Page 1: ...605046 REV A BigDog Mowers Alpha MP Operator s Manual 200 South Ridge Road Hesston Kansas 67062...

Page 2: ......

Page 3: ...ration 3 1 Using A Ramp 3 2 Slope Operation 3 2 Children 3 3 Control Panel 3 4 Controls 3 4 Lights 3 5 Safety Start Interlock System 3 5 Engine Starting 3 5 Stopping The Engine 3 6 Moving Mower With S...

Page 4: ...Engine Air Filter 4 5 General Engine Maintenance 4 5 Fuel Evaporation System Filter 4 6 Belts 4 6 Mower Blade Maintenance 4 6 Mower Blade Removal 4 6 Seat Adjustment 4 7 Steering Control Lever Adjust...

Page 5: ...ced and novice BigDog Mowers user Operating conditions vary considerably and cannot all be addressed individually Through experience however operators should find no difficulty in developing good oper...

Page 6: ...ct contains chemicals known to the state of California to cause cancer birth defects or other reproductive harm NOTICE OF REQUIREMENT OF SPARK ARRESTER MUFFLER This equipment may create sparks that ca...

Page 7: ...ualified and physically able individuals properly trained in the operation of this equipment All operators and mechanics must become familiar with the safe operation of the equipment operator controls...

Page 8: ...e compartment top of deck exhaust area battery fuel line fuel tank and operator s station clean of accumulated trash grass clip pings and other debris Always clean up spilled fuel and oil Fast Forward...

Page 9: ...battery when charging Hydrogen gas forms inside the battery This gas is both toxic and flammable and may cause an explosion if exposed to flame Always remove the negative ground first and replace it...

Page 10: ...ehind the machine before backing up Do not mow in reverse unless absolutely necessary Always look down and behind before and while backing up WARNING Roll over Slow down before turning Do not operate...

Page 11: ...ch as pole tree or building 3 Fold the paper along the slope guide lines C D or E 4 Align the closest slope guide line with the ground slope This will give you a close estimation of the ground slope t...

Page 12: ...REV A 2 6 605046...

Page 13: ...your full attention Do not operate the equipment while wearing sandals ten nis shoes sneakers shorts or any type of loose fitting clothing Do not use a towel as a headband or neck wrap and do not han...

Page 14: ...t make sudden changes in speed or direction Avoid starting and stopping on a slope If tires lose trac tion disengage the mower blades and proceed slowly straight down the slope Mow a safe distance min...

Page 15: ...m Never leave the mower unattended with the ignition key in switch especially with children present Children or bystanders may be injured if they move or attempt to operate the mower while it is unatt...

Page 16: ...When the knob is pulled up the choke is in the ON start position Do not operate the machine in the ON start position E Electronic hour meter Figure 3 1 registers 1 10 hour increments up to 9 999 9 tot...

Page 17: ...e operator is off the seat check the function of the seat switch If the seat switch is not operating properly is not opening or closing and if the cause can not be determined replace the seat switch I...

Page 18: ...o release the park brakes so that the mower can be moved Do not tow the machine Move it by hand or use a winch to load on a trailer for transporting When transporting on another vehicle the mower shou...

Page 19: ...raulic system compo nents may occur To increase speed increase steering control lever s distance from neutral The farther forward steering control levers are from neutral the faster the mower will tra...

Page 20: ...y familiar with the proper use and operation of the equipment should read the manual completely and thor oughly and should have attempted slow moving maneu vers to become familiar with the operation o...

Page 21: ...the cutting width of the mower is wider than the previous mower This ensures that uneven turf is not cut too short Raise the cutting height of the mower if the grass if slightly taller than normal or...

Page 22: ...ts Step on the deck lift pedal and latch the transport lever in the deck transport position Pull the adjusting pin out of the hole that it is in and insert it into the desired cutting height hole Step...

Page 23: ...engine in an enclosed area unless exhaust is vented to the outside Exhaust gases contain carbon monoxide which is an odorless and deadly poison Never attempt to make any adjustments or repairs to the...

Page 24: ...on any mower equipped with unapproved non pneumatic tires Lubrication Use SAE multi purpose grease Electrical System The electrical system is a 12 volt negative ground Recommended battery size is a ga...

Page 25: ...s whichever comes first NOTE The filter guard must be removed to access filter Each transmission s filter is located per Figure 4 3 A standard oil filter wrench is used to change filter threads are ri...

Page 26: ...ile refueling Extinguish all ciga rettes cigars pipes and other sources of ignition Do not remove fuel cap or fill tank with engine running or while engine is hot Clean up any fuel spills If fuel is s...

Page 27: ...e 4 Position the loose end of the hose forward and down in front of the right side transmission so that it can drain into a suitable oil drain container 5 With the hose in position use a 10 mm wrench...

Page 28: ...er following pattern as shown Figure 4 7 Touch up sharpening can be done with a file Check the blades for balance following grinding A commercial balancing tool is available through most hardware supp...

Page 29: ...r lever Figure 4 11 the upper control lever can be pivoted to fit the operator s personal preference The steering control levers can also be adjusted up and down Remove the cap screws and slide the up...

Page 30: ...5046 install the cap screws and tighten The steering control levers should be adjusted so that they align with each other when in the neutral position Figure 4 11 Upper control lever Lower control lev...

Page 31: ...information NOTE After completing maintenance cycle 100 hours repeat cycle Maintenance Schedule Refer to Figure 4 12 Figure 4 13 Figure 4 14 Figure 4 15 SERVICE AT INTERVALS INDICATED WEEKLY OR 40 HO...

Page 32: ...alve 5 Battery 6 Fuel Tank 7 Engine Oil Filter 8 Park Brake Switch 2 9 Drive Tire 10 Pump Belt 11 Engine Air Intake Screen 12 Front Wheel Tires 13 Hydraulic Oil Expansion Tank 14 Deck Belt 15 Blades 1...

Page 33: ...evel Add oil Oil diluted or too light Change oil and check for source of contamination Failed oil pump Contact your Dealer High oil consumption Numerous Contact your Dealer Mower jerky when starting o...

Page 34: ...REV A 5 2 605046...

Page 35: ...eads 6 Crank the engine with the starter at least a dozen revolutions to distribute oil over the cylinder walls and valve mechanism 7 Clean the exterior surface of the engine Spread a light film of oi...

Page 36: ...iew or print a copy of the product manuals Operator s Manual Parts Manual or General Service Manual for these mowers go online to www bigdogmowers com and click on the MANUALS button Contact your loca...

Page 37: ...and serial number 1 1 Moving mower with stalled engine 3 6 Mower blade maintenance 4 6 Mower blade removal 4 6 Mower operation 3 6 New season preparation 6 1 Operating suggestions 3 8 Parts and servi...

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