Cub Cadet 3186 manual Trouble Shooting, Engine Operates Irregularly or Knocks

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SECTION 11: TROUBLE SHOOTING

Possible CausePossible Remedy

Hard To Start

No fuel in fuel tank or carburetor

Fill the tank with fuel. Check the fuel line,

 

carburetor and fuel filter.

Fuel ine or carburetor clogged

Clean the fuel line and carburetor with a

 

commercial carburetor cleaner.

Fuel filter plugged

Replace

Water in fuel

Drain the fuel tank and carburetor. Use new

 

fuel and dry the sparks plugs.

Choked improperly. Flooded engine

Follow the starting instructions.

Defective ignition or loose wiring

Check the wiring, spark plugs or fuse.

Defective battery

Check and service. Refer to “BATTERY.”

Spark plug dirty or improperly gapped

Clean, adjust the gap to .040-inch or replace

 

the plug.

Engine Operates Irregularly or Knocks

Engine incorrectly timed

See your authorized dealer.

Spark plug dirty; wrong gap or wrong type

Clean, reset the gap or replace

Poor or weak spark

Check the spark plugs and wiring.

Carburetor setting incorrect

Adjust. Refer to “ADJUSTMENTS.

Poor grade fuel or water in fuel

Drain and use a good grade of clean fuel.

Engine overheating

Refer to “MAINTENANCE.”

Engine valves at fault

See your authorized dealer.

Engine smokes

See your authorized dealer.

Oil level rises due to fuel in the crankcase

See your authorized dealer.

Air filter becomes oil and fuel soaked

See your authorized dealer.

Engine leaks oil

See your authorized dealer.

Misfiring

See your authorized dealer.

Other engine problems

See your authorized dealer.

Excessive oil in air cleaner

Be sure that oil dipstick is fully seated, oil fill

 

cap is tight, and all excess oil is squeezed out

 

of the pre-cleaner.

PTO Clutch Will Not Engage

Reverse pedal is partially depressed

Depress brake pedal.

Vacuum actuator not energized

Check PTO switch and connections, check

 

for worn or broken wiring.

Vacuum leak

Check vacuum lines.

Lack of Power

Air cleaner clogged

Service the air cleaner element. Refer to

 

MAINTENANCE.”

Engine overload

Reduce the load.

Engine overheated

Make sure the air intake screen, shrouding,

 

engine fins, side panels, dash intake screen

 

and grille are free of accumulated dirt and

 

debris. Refer to “MAINTENANCE.”

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Contents CUB Cadet P.O. BOX 368023 CLEVELAND, Ohio 3000Important Safe Operation Practices Table of ContentsPage Slope Operation Service Finding Your Model & Serial Number Calling Service InformationIgnition Stop Safety Labels Found on Your UnitControls Parking Brake Lever PTO SwitchCenter Lift Height Indicator Steering WheelFuel Fill Cap Ignition / Light SwitchTransmission Release Rod Transmission Oil Fill/DipstickOil Pressure Indicator Seat Adjustment LeverDeck Front Lift Rod Assembly Indicator Light PodStarting The Engine Safety Interlock SwitchesOperation Fueling The TractorDriving The Tractor Setting The Cruise ControlDriving On Slopes Opening Tool Box Using The DrawbarUsing the Hydraulic Lift System Stopping The TractorSeat Adjustment AdjustmentsFront Steering Wheel Tilt AdjustmentBrake Inspection and Adjustment Front Wheel AlignmentEach Use Hours MaintenanceTurning Radius Adjustment Maintenance ChartLubrication Illustration General Battery Information Accessing Engine CompartmentHeadlight Bulb Replacement Battery RemovalBattery Maintenance Battery StorageTire Inflation Tail Light Bulb ReplacementChecking Transmission Oil Level Adding Transmission Oil Changing Transmission Oil Information Electrical BoxOff-Season Storage FuseEngine Information MANUFACTURER’S Warranty CoverageChecking Engine Oil Level Cleaning The EngineChanging Engine Oil Adding Engine OilSparkplugs Before making any adjustments or repairsServicing The Precleaner Changing Air CleanerChanging Fuel Filter Servicing The Paper Element Engine Operates Irregularly or Knocks Trouble ShootingDescription Model Number Optional EquipmentSlope Gauge Page Tires SpecificationsBrakes Page Page Year/500 Hour Limited Warranty Year Limited Warranty PTO ClutchPage Description Quick Reference Parts