RedMax CWP21 Operator'S Manual Download Page 24

24 – English

TROUBLESHOOTING

Troubleshooting schedule

!

WARNING! If service operations or troubleshooting does not require the machine to be on, the 

engine should be switched off, and the spark plug wire disconnected from the spark plug.

Problem

Probable cause

Potential Solution

The machine 

does not start

Incorrect starting procedure.

See instructions under the heading Starting and stopping.

Air filter clogged

Clean the air filter. Replace if necessary.

There is no fuel in the fuel tank

Refill with fuel

Spark plug defective

Replace the spark plug.

Spark plug cable disconnected.

Check that the spark plug wire is connected to the spark 

plug.

Loose blade or broken blade adapter

Tighten blade bolt or replace blade adapter.

Defect operator presence control bar

Contact an authorized service workshop.

Fuel valve lever (if equipped) in OFF postion

Turn fuel valve lever to the ON position.

The battery voltage is too low (if equipped)

Charge the battery.

Battery connected incorrectly (if equipped)

Connect battery to engine

Blown fuse (if equipped)

Replace fuse

Less power

Height of cut too low.

Raise height of cut.

Cutting extremely tall grass

Air filter clogged

Clean the air filter. Replace if necessary.

Buildup of grass, leaves and trash under 

mower

Clean underside of mower housing.

Too much oil in the engine

Check the engine’s oil level

Walking speed too fast

Cut at slower walking speed.

Uneven mowing

Worn, bent or loose blade

Replace the blade if it is bent or damaged.

Wheel heights uneven

Set all wheels at same height

Buildup of grass, leaves and trash under 

mower

Clean underside of mower housing.

Excessive 

vibrations

Worn, bent or loose blade

Replace the blade if it is bent or damaged.

Bent engine crankshaft

Contact an authorized service workshop.

Starter rope hard 

to pull

Engine flywheel brake is on when the operator 

presence control bar is released

Depress the operator presence control bar to upper 

handle before pulling starter rope.

Bent engine crankshaft

Contact an authorized service workshop.

Blade adapter broken

Contact your service agent.

Incorrect starting procedure.

See instructions under the heading Starting and stopping.

Grass catcher 

not filling (if 

equippped)

Cutting height too low

Raise height of cut.

Worn blade

Replace the blade

Catcher not venting air

Clean / Inspect Grass Catcher

Difficult to push 

the machine 

forward

Cutting extremely tall grass

Raise height of cut.

Cutting height too low

Grass catcher too full

Empty the grass catcher

Handle height not right for you

Adjust handle height (if equippped)

Drive starts 

feeling slow

Belt wear

See instructions under the heading Replacing the drive 

belt.

Belt off of pulley

Worn, damaged or untensioned clutch wire

For more information, see the ”Starting and Stopping” 

section.

Summary of Contents for CWP21

Page 1: ...English CWP21 Operator s manual Please read the operator s manual carefully and make sure you understand the instructions before using the machine...

Page 2: ...d by this equipment Carefully read and follow all of the safety instructions below CHILDREN CAN BE INJURED BY THIS EQUIPMENT The American Academy of Pediatrics recommends that children be a minimum of...

Page 3: ...line Gasoline is extremely flammable and the vapors are explosive Extinguish all cigarettes cigars pipes and other sources of ignition Use only an approved container Never remove gas cap or add fuel w...

Page 4: ...xplanation of warning levels The warnings are graded in three levels WARNING WARNING Used if there is a risk of serious injury or death for the operator or damage to the surroundings if the instructio...

Page 5: ...ND ADJUSTMENTS General 10 Remove the lawn mower from the carton 10 Handle 10 Grass catcher 11 Starter handle 11 Convert the lawn mower 11 Cutting height 12 FUEL HANDLING General 13 Fueling 13 Transpor...

Page 6: ...e of purchase The model and serial numbers will be found on a decal attached to the rear of the lawn mower housing You should record both serial number and date of purchase and keep in a safe place fo...

Page 7: ...come in contact with plug WARNING The muffler gets very hot in use and remains so for a short time afterwards Do not touch the muffler if it is hot WARNING Engine exhaust some of its constituents and...

Page 8: ...l bar 2 Starter handle 3 Grass catcher 4 Fuel cap 5 Air filter 6 Spark plug 7 Muffler 8 Wash out port 9 Rear deflector 10 Engine oil cap with dipstick 11 Cutting height control 12 Mulch plug 13 Bumper...

Page 9: ...and then release the operator presence control bar The engine should stop Rear deflector The rear deflector attached between the rear wheels of your mower is provided to minimize the possibility that...

Page 10: ...ndle section to operating position Align the handle bar pins with a slot in the handle bracket to set a comfortable height position for the handle 2 Tighten the lower handlebar screws 3 Remove protect...

Page 11: ...be used in mulching mode The mulching mode will recut the grass clippings many times which will reduce the clippings in size so that as they fall onto the lawn they will disperse into the grass and n...

Page 12: ...cutting Cutting height The cutting height can be adjusted to 9 1 9 different positions Raise wheels for low cut and lower wheels for high cut Adjust cutting height to suit your requirements Medium po...

Page 13: ...ange your clothes Wash any part of your body that has come in contact with fuel Use soap and water If the machine is leaking fuel Check regularly for leaks from the fuel cap and fuel lines Engine oil...

Page 14: ...tor is responsible for accidents or hazards occuring to other people or their property See manufacturer s instructions for proper operation and installation of accessories Only use accessories approve...

Page 15: ...s etc should be removed from the lawn before you start to mow Objects hitting against the cutting attachment could be thrown and cause damage to people and objects Keep people and animals well away Ne...

Page 16: ...bstacle Pores in cloth grass catchers can become filled with dirt and dust with use and the catcher will collect less grass To prevent this regularly hose the grass catcher off with water and let dry...

Page 17: ...tructions in the section Fuel handling Disengage drive system if equipped before starting the engine motor Manual Start The operator presence control bar must be held against the handlebar when the en...

Page 18: ...accessories Maintenance schedule In the maintenance schedule you can see which parts of your machine that require maintenance and with which intervals it should take place The intervals are calculate...

Page 19: ...finished surfaces wheels free of gasoline oil etc Keep top of engine around starter clear and clean of grass clippings and chaff This will help engine air flow and extend engine life Clean the unders...

Page 20: ...perature CAUTION Although multi viscosity oils 5W30 10W30 etc improve starting in cold weather these multi viscosity oils will result in increased oil consumption when used above 32 F Check your engin...

Page 21: ...ngine oil at your local gas station 6 If you have spilled fuel or engine oil on the machine wipe off the spillage and allow remaining fuel to evaporate 7 Slowly pour oil down the oil fill spout stoppi...

Page 22: ...ard sharpen the heavy end until the blade is balanced IMPORTANT The blades should be balanced after sharpening We do not recommend sharpening blade Sharpening and balancing the blade should be conduct...

Page 23: ...clockwise 5 The bolt should be tightened with a torque of 35 40 ft Ibs 47 54 Nm 6 Verify the spark plug wire is disconnected from the engine WARNING Always disconnect spark plug wire and place wire w...

Page 24: ...ng Too much oil in the engine Check the engine s oil level Walking speed too fast Cut at slower walking speed Uneven mowing Worn bent or loose blade Replace the blade if it is bent or damaged Wheel he...

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Page 28: ...2017 11 21 Original instructions 115935927...

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