BigDog MOWER CO User Manual (English)

Questions and Answers:

G
grogersAug 18, 2025
What to do if the starting motor does not crank on my BigDog MOWER CO Lawn Mower?
- W
  william78Aug 19, 2025
  If the starting motor on your BigDog Lawn Mower isn't cranking, ensure the steering control levers are in the park brake position and the switch is properly adjusted. Check that the deck clutch switch is disengaged and the frame release lever is latched with the release latch pin engaged. Also, verify the battery isn't weak or dead (recharge or replace if necessary), electrical connections aren't corroded or loose, and the 15 amp fuse isn't blown (replace if needed).
B
Benjamin TuckerAug 21, 2025
Why will my BigDog Lawn Mower engine not start or keep running?
- J
  joseph28Aug 21, 2025
  If your BigDog Lawn Mower engine won't start, starts hard, or fails to keep running, check the following: ensure there's fuel in the tank and the fuel line isn't plugged; if so, fill the tank or replace the line. Make sure the fuel system has the correct type of fuel, replacing it if necessary. Replace the fuel filter if it's dirty. Also, if equipped, ensure the choke is on.
J
Jennifer LoganAug 23, 2025
How to fix uneven cutting height on my BigDog MOWER CO?
- R
  richardsonkyleAug 23, 2025
  To fix an uneven cutting height on your BigDog Lawn Mower, start by sharpening the blades or installing new ones if they are bent. Make sure to adjust air pressure to 8 - 12 psi (55 - 83 KPa) in the tires. Additionally, adjust the height of the anti-scalp wheel, and clean the underside of the deck.
L
luisjonesAug 26, 2025
Why is there abnormal vibration in my BigDog MOWER CO?
- B
  Bradley MccoyAug 26, 2025
  Abnormal vibration in your BigDog Lawn Mower could be due to several reasons. Check if the engine mounting bolts are loose and tighten them. Inspect the engine pulley, idler pulley, or blade pulley for looseness and tighten accordingly. See if a blade mounting bolt is loose and tighten it. If the cutting blades are bent or unbalanced, install new ones. Replace or tighten the spindle bearing if it is worn or loose.
F
Frank EvansAug 28, 2025
What causes loss of power in my BigDog Lawn Mower?
- J
  John PatelAug 28, 2025
  Loss of power in your BigDog Lawn Mower can be caused by several factors. Check for restrictions in the air cleaner and service it if needed. Ensure the tow valve is closed. If the traction drive belt is worn, loose, or broken, install a new one. Also, adjust the linkage if the steering linkage needs adjustment.
C
Christian CarterAug 30, 2025
What to do if the blades do not rotate on my BigDog MOWER CO?
- C
  Christy DukeAug 30, 2025
  If the blades on your BigDog Lawn Mower do not rotate, first, install a new deck drive belt if the current one is worn, loose, or broken. If the deck drive belt is off the pulley, reinstall it and check for the reason why it came off.
G
Gary SantiagoSep 1, 2025
Why does my BigDog Lawn Mower circle or veer in one direction?
- S
  Steven NorrisSep 1, 2025
  If your BigDog Lawn Mower circles or veers in one direction, it could be due to several reasons. You may need to adjust the steering linkage or tighten it if it is loose. Also, ensure that the tires are properly inflated by adjusting the air pressure to 8 - 12 psi (55 - 83 KPa).
S
Stephen JonesSep 4, 2025
How to prevent my BigDog Lawn Mower air cooled engine from overheating?
- D
  Dr. Jamie MartinSep 4, 2025
  To prevent your BigDog Lawn Mower's air-cooled engine from overheating, clean the air intake screen and cooling fins if they are clogged.
S
Sean HayesSep 6, 2025
Why is my BigDog MOWER CO Lawn Mower jerky when starting?
- C
  Charles CrawfordSep 6, 2025
  If your BigDog Lawn Mower is jerky when starting, it could be because the steering control linkage needs adjustment or the steering linkage is loose. Adjust or tighten the linkage to resolve this issue.
N
Nicholas SerranoSep 8, 2025
Why does my BigDog Lawn Mower creep when the parking brake is engaged?
- S
  Susan Erickson MDSep 8, 2025
  If your BigDog Lawn Mower creeps when the parking brake is engaged, it may be because the steering linkage is out of adjustment or the brakes need adjustment. Try adjusting the steering linkage and then adjusting the parking brakes.

BigDog MOWER CO Specifications

General

Brand	BigDog
Model	MOWER CO
Category	Lawn Mower
Language	English

Summary

General Information

Big Dog® Service Program

Outlines the purpose of the service manual and related documents for Blackjack mowers.

Maintenance Introduction

Emphasizes regular maintenance for preventing downtime and premature failure.

Warranty

Details warranty repair requirements and the need for authorized dealer work.

Safety

Safe Servicing Practices

Guidelines for performing service procedures safely on the equipment.

Understand Correct Service

Emphasizes procedural understanding and seeking assistance when needed.

Pre-Operation Precautions

Crucial safety steps before operation, including fuel handling.

Wear Protective Clothing

Recommends appropriate attire and eye/ear protection for safe operation and servicing.

Operation Precautions

Safety guidelines for operating the mower, including fire hazards and starting procedures.

General Maintenance Precautions

Precautions to take during general maintenance tasks to ensure safety.

Avoid Fire Hazards

Precautions to prevent fire hazards during operation and maintenance.

Prepare For Emergencies

Steps to prepare for emergencies like fires, including first aid and extinguishers.

Prevent Battery Explosions

Safety measures to prevent battery explosions, including charging and handling.

Avoid Acid Burns

Warnings and procedures related to handling battery acid to prevent burns.

Torque Specifications

Standard Torques

Lists standard torque values for common threaded fasteners used in the manual.

Special Torques

Details specific torque values for critical components like lug nuts and blade bolts.

Power Unit Maintenance

Steering Adjustments

Procedures for adjusting steering control levers and linkage for proper mower operation.

Control Lever Stops Adjustment

Adjusting steering control lever stops to ensure the mower drives straight.

Park Brake Spring Adjustment

Steps to adjust the park brake spring for proper brake function.

Transaxle Drive Belt

Inspection and maintenance of the transaxle drive belt for wear and tension.

Deck Drive Belt

Procedures for inspecting, adjusting, and replacing the deck drive belt.

Hydraulic System

Maintenance of the mower's hydraulic system, including fluid changes and purging.

Tires

Information on recommended tire pressures and approved tire types for the mower.

Engine Maintenance

General Engine Maintenance

Overview of engine maintenance procedures and reference to the owner's manual.

Engine Oil and Filter

Instructions for changing engine oil and filter, including draining procedures.

Engine Air Filter

Maintenance procedures for the engine air filter.

Fuel Evaporation System Filter

Maintenance schedule for the fuel evaporation system filter.

Engine RPM Settings

Information on checking and adjusting engine RPM settings for optimal performance.

Deck Adjustments

Deck Leveling

Step-by-step guide to level the mower deck for optimal cutting performance.

Blades

Maintenance, inspection, and sharpening procedures for mower blades.

Mower Blade Replacement

Detailed steps for removing and installing mower blades safely.

Deck Belt Adjustment

Information regarding deck belt tension and adjustment.

Deck Belt Replacement

Procedures for removing and installing the mower deck drive belt.

Rear Discharge Deck Anti-scalp Wheels

Maintenance of anti-scalp wheels on the rear discharge deck.

48"/54" Side Discharge Deck Belt Routing

Diagram and instructions for routing the drive belt on 48"/54" side discharge decks.

48"/54" Rear Discharge Deck Belt Routing

Diagram and instructions for routing the drive belt on 48"/54" rear discharge decks.

Electrical Systems

Main Electrical Harness Schematic - Kohler

Wiring diagram for the main electrical harness of Kohler engine models.

Main Electrical Harness Schematic - Kawasaki

Wiring diagram for the main electrical harness of Kawasaki engine models.

Main Harness to Fuel Gauge Voltage Convertor Schematic

Schematic showing the voltage conversion for the fuel gauge from the main harness.

Maintenance

Maintenance Schedule

A schedule of recommended maintenance tasks and their service intervals.

Maintenance Locator Chart

Visual guide identifying key maintenance components on Kohler and Kawasaki engines.

Troubleshooting

Troubleshooting Guide

A table listing common symptoms, probable causes, and suggested remedies for mower issues.

Related product manuals

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