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John Deere 445 Problems

John Deere 445 Engine Troubleshooting

Engine fails to start

No fuel in fuel tank - Add gasoline.
Low-quality gasoline - Change gasoline.
Stale fuel - Drain fuel and fill up fresh.
Dirty fuel system - Check and clean.
Plug connection defective - Replace if necessary.
Faulty spark plug - Test ignition spark.
Clogged fuel filter - Fit new filter.
Brake pedal not pushed down - Push the brake pedal down.
Carburetor is not working properly - Inspect and adjust.
Inspect and adjust choke. Compression problems.

Gas engine is difficult to start

Spark plug wear - Check the spark and change defective spark.
Carburetor settings incorrect - Adjusting as required.
Fuel pipes are clogged - Clean fuel system components.
Throttle cable worn - Install new throttle cable.
Stale or improper fuel - Fill in proper fuel.
Electrical connection problems - Inspect and replace.
Failing starter - Check the starter and replace defective components.

Engine runs unevenly

Plugged cooling fins - Clean and wash cooling fins.
Loose electrical contacts - Check and replace defective connections.
Incorrect ignition settings - Inspect spark plug and ignition system.
Choke cable sticks - Check and repair.
Air cleaner dirty - Clean air filter.

Engine misses under load

Spark plug worn out - Replace spark plug.
Carburetor is not adjusted correctly - Adjust carburetor as required.
Ignition coil air gap incorrect - Check and adjust ignition coil air gap.

JD 445 Engine overheating

Excessive engine load - Reduce loads.
Air intake screen blocked - Clean dirty components.
Too little or too much oil - Add or drain oil.
Low quality engine oil - Change oil.
Check internal bearing clearance.
Idle speed problems - Adjust carburetor idle mixture screw.

Engine does not idle

Poor spark plug contact - Adjust spark plug gap.
Faulty spark plug - Test spark and replace as required.

Engine knocking

Low octane fuel - Use proper gasoline.
Excessive engine load - Reduce loads.
Lack of engine oil - Add to required level.
Engine speed too low - Adjust the speed.
Cylinder bore or piston rings are damaged - Replace defective components.
Inspect for engine overheats from clogged cooling fins.
Checking and adjusting valve clearance.
Checking for wear crankshaft or camshaft bearings.

Engine back-fire

Inspect spark plug and change if required.
Adjust or replace choke.
Test carburetor, adjust if necessary.
Checking and adjusting ignition coil air gap.
Inspect inlet and outlet valves.
Check valve clearance, adjust if required.
Check flywheel key.

Insufficient engine power

Engine temperature too high - Air cleaner element plugged.
High engine oil - Excess oil must be drained.
Defective fuel pump - Testing fuel pump output.
Governor not work - Inspect and repair governor.
Inspect and repair carburetor.
Checking engine compression.

Excessive fuel consumption

Insufficient choke opening - Inspect choke cable.
Carburetor problems - Check carburetor float adjustment.

Black exhaust smoke

Air cleaner element plugged - Inspect and clean.
Throttle is partially engaged - Inspect and adjust throttle.
Check oil fill dipstick O-ring seal or cracked cap.

John Deere 445 Electrical System Troubleshooting

Starter doesn't work or will not turn engine

Main fuse malfunction - Fit new fuse.
Terminals are severely corroded and heat up - Clean terminals.
Weak battery - Battery charging required.
Ignition switch problems - Installing new lock.
Faulty starter - Change the starter.
Electrical wires are damaged - Change wiring.

Battery does not charge

Dead cell in the battery - Install new battery.
Battery terminals and cables are dirty - Check and Clean.

No Lights work

Light plug not connected.
Replace the lamps.
Wiring short circuit.

JD 445 Machine Problems

Tractor vibrates too much or rattles excessively

Attachment driven belt worn or damaged - Belt replacement required.
Worn traction drive belt - Inspect and replace traction belt.
Drive pulley is dirty - Change if necessary.
Blades bent or out of balance - Change as needed.

Tractor will not move with engine running

parking brake blocks the tractor - Release the parking brake.
Bypass valve lever is engaged - Deactivate the bypass valve.
Mower blades are loose - Check mower blades and fasten as required.
Blades are unbalanced - Check blades for damage and balance as required.
Transmission oil is insufficient - Fill transmission with oil.

John Deere 445 Mower Deck Troubleshooting

Plugged discharge chute

Operating at a faster ground speed - Use slower speed.
High grass - try operating a short cutting height.
The grass is wet - Do not mow when grass is wet.
Low engine speeds - Adjust choke to full opening.
Airflow restriction - Adjust to high revs.
cut too low - Adjust to higher cutting.
Incorrect belt installation - Fit belt correctly.

Patches of grass uncut

Mower deck clogged - Deck cleaning required.
Damaged or worn blade - Check for blade damage and replace if necessary.
Mower deck is low from ground - Leveling the mower deck.
Grass bag too full - Empty bagger.
Speed is very fast - Choose recommended speed.

Slipping drive belt

Dirt in the sheaves - Clean or replace.
Belt is loose - Check and replace belt.
Belt tension is incorrect - Belt tension needs to be adjusted.

Mower vibrates

Mower deck clogged or in sheaves - Clean deck and pulley from debris.
Damaged pulleys or belt - Replace defective components.
Belt or sheaves no adjustment - Inspect and adjust.
Blades are not balanced correctly - Balance the blades.

Blades scalp grass

Cutting height improper - Raise cutting height.
Mower wheel height incorrect - Check wheel adjustment.
Low tire inflation - Need to inflate tires.
Faster mower blade speeds - Adjust the speed of blades.
Bent mower blades - Install new blades.

Uneven Cut

Deck level is too low - Level mower deck.
Insufficient tire pressure - Increase tire pressure.
Wrong wheel position - Adjust wheel heights correctly.
Gear too high - Need to reduce speed.
Blades blunt - Sharpen or replace blade.

JOHN DEERE TRACTORS ATTACHMENTS
420	430	455	790	990
X300	X320	X330	X350	X475
X485	X500	X540	X570	X590
X700	X720	X738	X758	1023E
2025R	2210	2520	3025E	3032E
3038E	3038R	3039R	3046R	3203
3320	3520	4052R	4066R	4100
4105	4115	4200	4310	4320
4400	4410	4520	4600	4720

JD TRACTORS TROUBLESHOOTING
2640	3040	3310	3650	4100
5050D	5090R	5410	6105R	7200R
E130	L111	LA110	LT155	X300R