Troubleshooting Manual

Troubleshooting Manual

Being an outdoor equipment, lawn mowers are always likely to run into occasional problems – fortunately, most of these issues are hardly serious and can be resolved without having to involve a technician. However, it’s important to always bear in mind that the mower is a hazardous machine and must only be handled by those experienced with their repair. If you’re unsure about taking apart your mower by yourself, do not hesitate to call an authorized technician.

Practice Safety First!

Before attempting any sort of work on your mower, ensure that you’ve gone through the following guidelines:

  • Make sure to read and understand all the contents of the owner’s manual before attempting to operate the machine
  • Do not allow children to ride or handle the mower
  • Take the time to clear out the mowing area of any rocks or other foreign objects
  • Never operate the lawn mower barefoot or wearing light-weight footwear
  • Never wear loose fitting clothing which could get stuck within the mower’s moving parts
  • If mowing for extended periods of time, wear ear protection to minimize prolonged exposure to loud sounds
  • Ensure that any area being mowed has adequate ventilation, especially when mowing in confined spaces
  • Avoid suddenly starting or stopping the machine
  • Never shift the gear into reverse when travelling forward in the mower
  • Ensure that the cutting blades have been disengaged before transporting the mower over hard surfaces
  • Never operate the mower on inclines that exceed 15 degrees
  • Ensure that you have adequate lighting in the vicinity where you will be operating the mower
  • Learn how to steer and other basic operations at a slower engine speed in an open space in order to become comfortable with the unit’s handling and operation.
  • For an emergency stopping situation, the forward speed control lever can be pulled all the way back to the neutral-park setting to bring the unit to a complete halt
  • Stay vigilant for holes, elevations, steps and other imperfections in your lawn’s topography.
  • Never raise the unit when the blades are still rotating
  • After turning off the engine, wait for a while before attempting any work as internal parts ay take a few seconds to come to a complete halt.
  • Never adjust the unit’s cutting height when the engine is running – disengage the blade clutch and stop the engine before changing the deck height.
  • Instantly deactivate the cutting blades in case they strike a foreign object while mowing.
  • Never touch the engine, muffler or any of its components when the engine is running or just after turning off the engine as these parts are likely to be hot.
  • Disengage the PTO and remove the key when leaving the unit unattended.

Identifying the mower’s main controls

It’s mandatory that you’re familiar with all the mower’s main control switches before operating the machine. Here’s a list of the main controls and their location on the mower –

Ignition switch:
The engine is started and stopped with the ignition switch, located at the upper front right side of the mower’s body. The switch has three observable positions – namely, ‘O’ for OFF, ‘ON’ when the engine is running, and the ‘S’ position for cranking it on

Engine Throttle:
Located at the left hand side of the mower’s drivers seat, the engine throttle control lever is used to change the engine’s speed. Moving the lever forward or backward will correspondingly increase or reduce the engine speed

Forward Speed Control:
The travel speed of the mower as well as the neutral park position can be manipulated with the forward speed control lever. When pushed into the forward position, the travel speed is locked between anywhere ranging from 0 – 13 kmph. Ground speed increases as the lever is pushed further and further forward. Pulling the lever all the way back shifts it to the neutral-park position.

Blade Clutch (PTO):
The main cutting blades can be engaged or disengaged with the blade clutch. It is located at the right hand side of the driver’s seat, right behind the same side of the mower’s fender. Pulling up the lever deactivates the PTO and instead activates the blade brakes

Steering levers:
There are two steering levers, each of which maintain complete control over their respective drive wheel. Pushing forward both levers forwards moves the mower forward at the maximum speed set by the forward speed control we discussed earlier. Moving only one lever forward will steer the mower in the direction of the lever that has been pushed

Parking Brake:
Situated at the side of the main driver’s seat, the parking brake can be engaged by pulling the lever forward, while pulling it back will release the parking brake

Walker troubleshooting

Like any other machines Walker mowers will develop an issue from time to time. You are free to use the table below to diagnose and fix most common Walker problem issues.

Table 1. Most common issues and its solutions applicable for all Walker Models


Problem Solutions
Engine refuses to start
Check your fuel tank to ensure there’s enough fuel
Inspect your spark plug and ignition assembly for wear or damage
Clean the carburetor if dirty and ensure that air-fuel mixture is appropriate for the conditions
Engine not running smoothly
Ensure that the fuel used is fresh gasoline
As with the previous issue, check for problems with the spark plug
Clean out the air filter and replace if necessary
Inspect oil levels and replenish with fresh oil if required
Engine emitting smoke
If your engine is emitting white smoke, it’s likely that you’re burning oil
Black smoke generally indicates an unclean air filter or flooded carburetor
Clean out the air filter and replace if necessary
Engine overheats
Inspect the engine for debris and clean if required
Ensure that the oil levels are all up to the mark
Inspect for any damage to the cooling system and cooling fins
Inspect the gasket for leaks
Spark plug fouls
Ensure that the spark plug is clean
Inspect the spark plug gap and correct if required
Mower does not cut evenly
Ensure that the mower’s deck has been leveled properly
Inspect the tire pressure and ensure that they are filled appropriately
Sharpen the blade if dull or replace with a new one
PTO does not engage
Inspect the blade clutch and replace it if worn out
Ensure that the PTO switch is working – if defective, replace the switch


Walker mowers service and maintenance

Walker mowers need service only when broken- proper usage and maintenance keep them going for years without special need for service. In the table below you will find a list of regular maintenance activities

Table 2. Walker mowers maintenance schedule

Maintenance Schedule Task
Daily Check oil level of engine crankcase
Daily Clean the engine’s air cooling system
Daily Clear out grass buildup
Daily Service each of the mower’s blades
25 Hours Check the level of the battery electrolyte
25 Hours Oil points and grease fittings need to be lubricated
25 Hours Inspect transaxle fluid
25 Hours Inspect the tire pressure
25 Hours Check the safety switch system
100 Hours Check the drve tire mounting nuts
100 Hours Clean the transaxle housing unit
100 Hours Inspect the action of the blade brake
100 Hours Change the engine’s crankcase oil
200 Hours Change the engine oil filter
200 Hours Change the fuel filter
400 Hours Replace the transaxle oil as well as filter
400 Hours Change the air filter element

Starting the engine

  1. Ensure that you’re comfortable seated on the seat before attempting to start the mower’s engine. The forward control lever must also be in the neutral-park position while the blade clutch as well as the parking brake have got to be deactivated.
  2. Now gently push the throttle towards the FAST setting and twist the ignition to turn on the engine. As soon as the engine starts, turn the key to the ON position. Do not crank the engine’s ignition for more than 10 seconds even if the engine fails to start – instead, give it time to cool down in between attempts

Manipulating ground speed and steering

  1. Make sure that you’ve shifted the forward speed control lever out of the neutral-park position it was in. Wait until the levers stay in position after you’ve adjusted them for the desired speed.
  2. Gently push the steering levers corresponding to the appropriate drive wheel forward to steer in the required direction. To straighten out, gently pull the same steering lever back to its original position.
  3. In order to travel in the reverse direction, pull back both the steering levers with your left hand
  4. The forward speed control lever can be pushed further forward or backwards to manipulate the ground speed while moving. Aim to set your ground speed to match the load of the grass being mowed. Generally, taller grass calls for slower ground speeds while shorter lawns can be set for faster speeds.
  5. To stop moving and bring the mower to a standstill, pull back both the steering levers to the neutral-park position and then pull back the forward speed control lever also to the neutral-park setting

Activating the blade drive

  1. Firstly, ensure that you’ve set the engine’s throttle speed to a third of the regular speed. The blade clutch must never be engaged when the engine speed is high or this can significantly wear out your clutch and seriously decrease the life of your drive belts.
  2. Make sure that you move the blade clutch lever forward gently when activating the blade clutch. Even when deactivating, ensure that the lever is pulled back slowly.

Bringing the mower to a stop

  1. Pull back both of the steering levers to their original neutral-park position. After this, slide back the forward control lever also to the same neutral-park marking.
  2. Slow down the engine’s speed and bring it to a fast idle and then push the throttle leevr to the half throttle setting.
  3. Now gently disengage the blade clutch – do this only after reducing your engine speed
  4. Shut off the engine by twisting the ignition towards the OFF marking. Never lower the throttle below the half speed point when turning off the engine as this can cause the engine to backfire or run-on.
  5. Move the parking lever forward to activate the parking brake.

Engaging the transaxle lockout

  1. Raise the mower’s body. It’s important to bear in mind that the mower should not be towed at speeds higher than 3.2 kmph when the transmission lockout has been engaged as this can generate large amounts of internal pressure and rupture the machine’s transaxle.
  2. Move to the center of the mower after pulling up on each of the system’s transaxle lockout arms – now engage the step holding the arm in the unlocked position.
  3. With the arms in this position, the mower will roll along – ensure that all levers are at their highest marking in order to fully disengage transmissions.
  4. After towing has been completed, place the arms back in their normal operating position by releasing them.

Mowing Recommendations

  • In order to maximize mowing efficiency and generate sufficient cutting power, run your engine at the full throttle mode.
  • Ensure that the mower’s deck and discharge chute are regularly cleaned of debris and clippings
  • Inspect the blade from time to time in order to ensure that it is sharp as a dull blade can tear grass and ruin the appearance of your lawn
  • Ideally, try to cut your grass when it’s height isn’t too tall and the weather isn’t very wet. Cutting damp grass is less efficient and puts more of a strain on your engine
  • If you have to mow grass in more challenging weather conditions, it’s advisable that you mow twice in order to offset for irregularities caused by the conditions.
  • Leveling the mower properly is very important to achieving a smooth, even cut
  • Skidding and slipping of the drive tires can damage your lawn – avoid this by smoothly moving the control levers and driving the mower is a controlled manner. Jerky movements can be especially punishing on your grass.
  • If using a side discharge chute on the deck, ensure that the deflector shield has not been taken out – it needs to be in the lowest position possible to prevent clippings and other objects from being thrown up.
  • Always exercise extra caution when mowing on a slope – never mow on inclinations that are greater than 15 degrees as the unit could tip over.