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Summary of Contents for BigDog Series X
- Page 1 BigDog™ Mowers Series X General Service Manual ••••• P.O. Box 7000 ••• Hesston, Kansas • 67062-2097 108936BD_1010...
- Page 2 WARNING: The engine exhaust from this product 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 can start fires around dry vegetation. California Public Resources Code Sec- tion 4442.6 provides that it is unlawful to use or operate an internal combustion engine on any forest-covered, brush-covered, or grass-covered land unless the engine is equipped with a spark arrester maintained in effective working order.
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Page 3: Table Of Contents
Table of Contents Safety..........2-1 Safe Servicing Practices . - Page 4 108936BD_ 1010...
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Page 5: Safety
SAFETY • Store fuel in an approved container and keep it out of the reach of children. Never buy more than a 30 day supply of fuel. • Do not fill fuel containers inside a vehicle or on a truck or trailer bed with interior carpets or plastic truck bed This safety alert symbol is used to call attention to a message liners. -
Page 6: Operation Precautions
Operation Precautions Except when changing or checking belt, always keep belt covers on mower deck for safety as well as cleanliness. Avoid Fire Hazards Use a stick or similar instrument to clean under the Clean flammable material from machine. Prevent mower making sure that no part of the body, especially arms and hands are under mower. - Page 7 Prevent Battery Explosions can cause a battery gas explosion which will result in per- Battery posts, terminals, and related accessories contain sonal injury. lead and lead compounds, chemicals known to the State • Prevent the battery terminals from touching any metal of California to cause cancer and reproductive harm.
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Page 9: General Information
This manual is part of a service package for the BigDog™ Daily inspect mower for grass clippings and wire and string Series X mowers. Use of this manual in conjunction with other tangles. The underside of the mower deck will collect a build-up BigDog™... - Page 10 108936BD_1010...
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Page 11: Torque
TORQUE Standard Torques The following chart lists the standard torque values for the threaded fasteners found in this manual. Torque all cap screws, nuts and set screws to these values unless a different torque is shown in the Special Torques section. SIZE FT-LBS SIZE... - Page 12 108936BD_1010...
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Page 13: Power Unit Maintenance
POWER UNIT MAINTENANCE Steering Adjustments 3. Raise the seat platform and disconnect the mower harness from the seat switch. Bypass the seat switch by connecting the two mower harness female spades Steering control lever neutral adjustment together. Figure 5-1 The mower’s steering has been factory adjusted to eliminate creeping when the steering control levers are in the neutral posi- tion. - Page 14 Control lever stops The steering control lever stops (see Figure 5-4) are designed to do two things: First, and most important, they must keep the pumps from bottoming out internally. Secondly, the stops may be adjusted to help drive straight when the steering control Jam nut levers are pushed forward against the stops.
- Page 15 NOTE: Since this is a hydrostatic drive, variables such as temperature of oil, efficiency of pumps and motors, tire pressure etc. may effect the consistency of the ability to rely on the stops to drive straight without the operator making minor steering adjustments with the control arms.
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Page 16: Park Brake Adjustment
Align steering control lever ±.125” (3.175mm) Brake link Figure 5-10 Figure 5-9 Park brake adjustment Bypass valve WARNING This procedure will require that the unit be raised and blocked up off of the ground. It is necessary for the wheels to rotate without coming in contact with the floor or any object that would permit the unit to propel itself. -
Page 17: Belts
short time. Hydraulic Pump Belt Adjustment The transmission drive belt tension remains constant by means of a tension idler and spring. There is no tension adjustment of this belt. Figure 5-14 Control lever Inspect the belt every 100 hours and replace as needed. Replace the belt every 400 hours or every two (2) years which- ever comes first. - Page 18 Before applying pressure to hydraulic system, make sure WARNING all connections are tight and all hoses and lines are in good condition. To find a leak under pressure, use a piece of cardboard or wood — never use your hands. Relieve all pressure in the system before disconnecting or work- Do not attempt any adjustments with the engine run- ing on hydraulic lines.
- Page 19 rise. 7. Increase the pressure to 1100 PSI (76 bar). NOTE: Raising the system oil temperature will make a Record the flow reading on the Bi-Directional Flow difference in the readings you receive. It has been Meter. determined that to complete this test accurately, the oil 8.
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Page 20: Tires
Gauge wheels ....8-12 psi (55-83 KPa) Only pneumatic tires are approved for BigDog™ Series X 1. With the bypass valve open and the engine running, mowers. -
Page 21: Engine Maintenance
A specially designed dry filter is standard equipment on some 10 minutes for engine oil to adequately drain. BigDog™ Mowers Series X mowers which supplies clean 7. After oil is drained, close the valve by pushing in on the combustion air to the engine. An example of the air filter is valve body and twisting it clockwise. - Page 22 The mowing conditions will determine the frequency of air filter element changing. Pre-cleaner Oil drain valve Canister Figure 6-3 cuts or tears. Do not attempt to use a damaged element which will allow abrasive particles to enter the engine. Figure 6-4 3.
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Page 23: Engine Rpm Settings
Engine RPM Settings The engine rpm’s are set at the factory for maximum mowing efficiency. Occasionally it may be necessary to check and adjust the settings. The high idle speeds, with no load, should be set as follows: Briggs & Stratton 26 hp ENGINE SPEED MODEL NO. - Page 24 108936BD_1010...
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Page 25: Deck Adjustments
DECK ADJUSTMENTS Deck Leveling right side). Figure 7-4 10. Jam both nuts against the block. Leveling the deck must be done in the following manner and order: 1. Check tire pressures to make certain they are properly Clamp here inflated before starting to level deck. The recommended pressures are as follows: Drive wheels . - Page 26 bolt from moving. Figure 7-5 18. Tighten the hardware holding the chain and adjuster onto the deck lift arm. Figure 7-5 Nuts Lift block 1” Chains 1” Deck lift rod Figure 7-6 loosen the two nuts on the block holding the threaded rod until there is slack in the deck lift chain.
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Page 27: Blades
Blades Mower blade maintenance Check the mower blades daily, they are the key to power efficiency and well groomed turf. Keep them sharp, a dull blade Resharpening pattern will tear rather than cut the grass, leaving a brown ragged top on the grass within a few hours. -
Page 28: Belts
the fibers of the belt covering. Warped Blade (Replace) Keep oil and grease away from belts, and never use belt dressings. Any of these will destroy the belt composition in a Cutting very short time. plane Deck Belt Adjustment The spindle belt tension remains constant by means of a Straight Blade tension idler and spring. - Page 29 NOTE: The following notes are the same for the two different decks shown. 1. Spring length after tensioning new belt. Measured from outside of hook to outside of hook with deck set at 3¼” (8.26cm) cut height. 2. Route belt as shown. 52"...
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Page 31: Electrical
ELECTRICAL Electrical Schematic – Briggs & Stratton 108936BD_1010... -
Page 32: Electrical Schematic - Kawasaki
Electrical Schematic – Kawasaki 108936BD_1010... -
Page 33: Electrical Schematic - Kohler
Electrical Schematic – Kohler 108936BD_1010... - Page 34 108936BD_1010...
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Page 35: Maintenance Schedule
Maintenance Schedule Refer to Figure 9-1, Figure 9-2 & Figure 9-3 WEEKLY MONTHLY ANNUALLY SERVICE AT INTERVALS INDICATED Every 40 Every 100 EVERY 500 HOURS HOURS HOURS Verify safety start interlock system Prior to each use Visually inspect unit for loose hardware and/or damaged parts Prior to each use Visually inspect tires... -
Page 36: Maintenance Locator Chart
BigDog™ Mowers Series X Maintenance Locator Chart 1. Engine Oil Fill & Dipstick 2. Fuel Filter 3. Engine Air Cleaner 4a. Engine Oil Drain Valve (Briggs & Stratton) 4b. Engine Oil Drain Valve (Kohler & Kawasaki) 5. Battery 6. Fuel Tanks 7. - Page 37 BigDog™ Mowers Series X Maintenance Locator Chart 1. Deck Pusher Arm Zerks (2) 2. Deck Belt 3. Spindle Housing Zerk (3) 4. Blades Figure 9-3 108936BD_1010...
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Page 39: Troubleshooting
TROUBLESHOOTING The majority of operating problems that occur with a system can be traced to improper adjustments or delayed service. A consistently applied preventative maintenance program will prevent many problems. The following chart is designed to help you locate a problem by suggesting probable causes and the recommended solutions. SUGGESTED SYMPTOMS PROBABLE CAUSES... - Page 40 10-2 108936BD_1010...
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Page 41: Index
INDEX PAGE PAGE Belts..............5-5 Maintenance Precautions........2-2 Blades...............7-3 Maintenance Schedule ..........9-1 Control lever stops ..........5-2 Mower blade maintenance ........7-3 Deck Belt adjustment ..........7-4 Mower blade removal ..........7-3 Deck Belt Routing & Tensioning......7-5 Operate Machine Safely..........2-2 Deck leveling............7-1 Operation Precautions..........2-2 Electrical Schematic — Briggs & Stratton .....8-1 Pre-Operation Precautions ........2-1 Electrical Schematic –...
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