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John Deere D170 Problems

John Deere D170 Engine Troubleshooting

Engine will not start

Fuel tank is empty - Add gasoline.
Wrong grade of gasoline - Change gasoline.
Old gas - Drain fuel and add fresh.
Water or air in fuel system - Remove air or water from system.
Faulty spark plug wire - Check the spark plug wires.
Faulty spark plug - Test ignition spark.
Clogged fuel filter - Replace fuel filter.
Faulty safety switch - Change damaged switch.
Carburetor is not working properly - Inspect and adjust.
Inspect starter cranking speed RPM. Compression problems.

Gas engine is difficult to start

Spark plug wear - Inspect the spark, replace if necessary.
Carburetor incorrectly set - Set carb correctly.
Dirt in fuel pipes - Clean fuel system components.
Throttle cable worn - Install new throttle cable.
Stale or incorrect gasoline - Pour quality gasoline.
Loose or corroded electrical connections - Checking and replace.
Starter problems - Check the starter and replace defective components.

Engine stalling, surging or running rough

Cooling fins plugged - Remove dirt from cooling fins.
Loose electrical connections - Check and restore defective connections.
Incorrect ignition settings - Check ignition and adjust if necessary.
Throttle cable sticking - Check and change if required.
Air filter blocked - Clean or change air filter.

Engine misses

Spark plug wear - Replace spark plug.
Carburetor problems - Test and repair.
Ignition coil is damaged - Inspect ignition coil and change if required.

Engine overheating

Excessive engine load - Reduce loads.
Air intake screen blocked - Clean and wash dirty components.
Engine oil low or too high - Checking oil level and oil pressure.
Incorrect engine oil viscosity - Change engine oil.
Check internal bearing clearance.
Too Fast idle - Adjust fast idle.

Engine doesn't idle speed

Poor spark plug contact - Check spark plug gap.
Faulty spark plug - Check the spark and change defective spark.

JD D170 Engine knocks

Stale gasoline - Use correct gasoline.
Engine overloaded - Reduce loads.
Oil level low - Add to required level.
Engine speed too low - Adjust carburetor.
Piston rings and cylinder bore are wear - Replace defective components.
Inspect for engine overheats from clogged cooling fins.
Checking and adjusting valve clearance.
Inspect for loose or wear connecting rods.

Engine backfires

Check spark plug and replace if necessary.
Adjust or change the throttle.
Check and adjust carburetor.
Check and adjust ignition coil air gap.
Check for sticking valves.
Checking and adjusting valve clearance.
Inspecting flywheel key.

Engine loses power

Engine overheating - Check air cleaner for plugged condition.
Excess engine oil - Excess oil needs to be drained.
Fuel pump is damage - Inspect and repair fuel pump.
Governor is damage - Inspect and repair governor.
Check carburetor float adjustment.
Checking engine compression.

Engine using too much gasoline

Insufficient throttle opening - Replace throttle cable.
Incorrect carburetor adjustment - Checking and adjusting carburetor.

Black exhaust smoke

Air filter element clogged - Check and clean.
Choke not fully engaged - Check and repair throttle.
Checking and adjusting carburetor float level.

John Deere D170 Electrical System Troubleshooting

Starter does not run

Fuse is defective - Check and replace.
Battery terminals are corroded - Clean contacts.
Battery is discharged - Battery charging required.
Ignition switch defective - Change the lock.
Starter is damaged - Install new starter.
Wires disconnected - Reconnect wires.

Battery doesn't charge

Battery cells defective - Replace the battery.
Battery terminals and cables are dirty - Clean or replace cable.

Lighting does not function

Light plug disconnected.
lamp defective.
Wiring short circuit.

JD D170 Machine Problems

Excessive tractor vibration

Equipment drive belts worn out - Inspect and change damaged belt.
Traction drive belt damage - Check and replace belt.
Drive pulley is dirty - if required.
Cutting blade loose or unbalanced - Tighten and balance blade.

Engine runs but tractor won't move

Parking brake locked - Unlock park brake.
Bypass valve lever is engaged - Deactivate the bypass valve.
Mower blade could be loose - Fasten the blades securely.
Poor blade balancing - Balance the blades correctly.
Too little transmission oil - Topping up oil.

John Deere D170 Mower Deck Troubleshooting

Plugged discharge chute

Travel speed too fast - Use slower speed.
Grass too long - Adjusting cutting height.
The grass is wet - Don't mow while wet grass.
Low engine speeds - Open choke wide.
Loss of airflow - Check engine speed.
Mower cuts too low - Adjust to higher cutting.
Incorrect belt installation - Install the belt correctly.

Lawn mower leaving uncut grass

Mower deck clogged - Clean mower deck.
Blade wornout - Inspect and fit new blade if required.
Deck level is too low - Leveling the mower deck.
Grass bag too full - Clean bagger.
Travel speed too fast - Need to reduce speed.

Slipping drive belt

Dirt in the sheaves - Check and clean.
Drive belt wear - Install new belt.
Poor belt tension - Belt tension needs to be adjusted.

Excessive mower vibration

Debris in sheaves or on mower deck - Remove debris from deck or pulley.
Pulley or belt faulty - Replace damaged parts.
Pulley or belt out of alignment - Check and align.
Incorrect blade balancing - Blades need balancing.

Blade strips grass

Cutting height too low - Check and adjust height.
Mower rollers not adjusted improperly - Adjust front or back wheel height.
Tire pressure is uneven - Inflate tires as required.
Faster mower blade speeds - Adjust the speed of blades.
Bent blades during operation - Replace blades.

Uneven Cut

Mower deck not leveled properly - Deck leveling required.
Low tire inflation - Increase tire pressure.
Incorrect rollers height - Check the rollers heights.
Traveling too fast - Need to reduce speed.
Mower blades blunt - Sharpen the blade or install a new one.

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