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John Deere D110 Troubleshooting
The
John Deere D110 lawn tractor was manufactured from 2011 to 2017. The John Deere
D110 driveline consists of a Briggs and Stratton 31P677 four-cycle single
cylinder vertical shaft air-cooled gasoline engine and Kanzaki Tuff Torq T40
hydrostatic transmission.
The maximum travel speed (forward and reverse): 5.5 mph (8.8 km/h) / 3.2
mph (5.1 km/h). A 30.6 cubic inches (501 cc) engine output is 19.5 hp
(14.5 kW) at 3600 rpm. The engine has a float carburetor, forced air
cooling system and electronic ignition system.
The John Deere D110 lawn tractor is fitted with 15x6.00-6 front tires and
20x8.00-8 rear tires. The wheel base is 49 inches (1240 mm). The tractor
can be equipped with the following attachments: a 42" mid-mount 2-blade
mower deck, 44" two-stage front-mount snow blower, and 46" front blade
with manual lift.
Engine Troubleshooting |
Engine difficult to start or won't start |
Fuel tank is empty - Add gasoline |
Wrong fuel grade - Use quality fuel |
Dirty fuel system - Check and clean |
Damaged spark plug wiring connection - Check spark plug wiring connection, repair or change |
Spark plug is faulty - Spark plug need to be replaced |
Clogged fuel filter - Fuel filter needs to be replaced |
Defective safety switch - Replace if required |
Carburetor is clogged - Clean the carburetor |
Poor cylinder compression - Check cylinder block and change worn parts |
Incorrectly adjusted or damaged throttle cable - Replace cable or adjust correctly |
Cooling fins are blocked - Need to wash or clean |
Ignition system malfunction - Check ignition system and replace faulty parts |
Defective or stuck throttle cable - Clean or replace the cable |
Air filter element is plugged - Replace or clean air filter |
Fuel pump is defective or dirty - Clean or change fuel pump |
Engine starts but then stalls |
Damaged spark plug - Spark plug need to be replaced |
Clogged or faulty carburetor - Replace or service carburetor |
Ignition coil is defective - Replace ignition coil as necessary |
Valve springs are weak or broken - Replace valve springs |
Valves sticking - Service the valves |
Engine oil level low - Need to add engine oil |
Engine overload - Reduce engine load |
Cooling fins are plugged - Need to wash or clean |
Carburetor is running lean - Set the carburetor properly |
Ignition timing is wrong - Set the ignition timing properly |
Improper valve setting - Valves needs to be adjusted properly |
Abnormal engine noise or knocking |
Stale fuel - Use correct gasoline |
Engine is under excessive load - Reduce load |
Engine oil level low - Fill the crankcase with engine oil |
Too low idle RPM - Adjust idling as required |
Fuel pump is dirty or defective - Test fuel pump and replace if necessary |
Main bearings or crankshaft wear - Worn parts replacement required |
Improper valve clearance - Need to adjust valve clearance |
Piston rings or cylinder bore are worn - Replace defective parts |
Carburetor is clogged or improperly adjusted - Adjust the carburetor correctly or clean it |
Dirty air filter element - Service or replace air filter |
Clogged or defective fuel pump - Check fuel pump and replace if necessary |
Ignition system is defective - Test ignition and replace failed parts |
Cylinder head gasket is defective - Cylinder-head gasket replacement required |
Valves are stuck or burned - Service or replace valves |
Push rod is worn or defective - Change push rod |
Worn cylinder block parts - Replace defective parts as required |
Engine uses too much fuel |
Throttle opening is not full - Adjust or change throttle cable |
Incorrect carburetor main jet adjustment - Adjust main jet as required |
Spark plug is defective or loose - Spark plug need to be tightened or replaced |
Valves are stuck, burned, or worn - Clean or change valves |
Worn sleeve, rings, or piston - Replace faulty components as required |
Improper valve clearance - Need to adjust valve clearance |
Engine oil consumption is too high |
Gaskets or seals may be damaged - Worn parts need to be replaced |
Valve guides and stems are worn - Change the valves |
Piston rings are stuck or broken - Install new piston rings |
Scuffed piston or cylinder liner - Check liner and piston, install new components as required |
Blocked breather pipe or hose - Clean or replace |
Hydrostatic Transmission Troubleshooting |
HST transmission makes excessive noise |
Worn or unadjusted speed control linkage - Change or adjust linkage |
Transmission overloaded - The load should be reduced |
Fluid is contaminated or fluid level is insufficient - Pour fresh fluid or add transmission fluid to proper level |
Worn or defective transmission components - Check transmission components and change if necessary |
Shift linkage is worn or rusty - Replace or lubricate the linkage |
Hydrostatic pump is defective or blocked - Change or repair pump |
Worn or misadjusted transmission shift control parts - Adjust correctly or replace |
Insufficient transmission oil - Need to add transmission oil |
Faulty or worn drive sheave - Change sheave |
Shift linkage is unadjusted or damaged - Change or adjust linkage |
Speed control pedal linkage is bent or not adjusted - Repair or adjust linkage |
Transmission gaskets or seals are worn - Install new gaskets or seals |
Final drive shaft is leaking - Replace shaft seals |
Transmission housing is cracked - Replace damage housing or transmission assembly |
Mower Deck Troubleshooting |
Mower vibrates excessively |
Mower deck drive sheave is clogged or worn - Clean or change sheave |
Drive belt is damaged or loose - Belt needs to be adjusted or replaced |
Bent or unbalanced cutting blades - Replace or balance blades |
Blade mounting bolts are loose - Bolts need to be tightened |
Constant clogging of discharge chute |
High ground speed - Select a slower speed |
Long grass - Use a lower cutting height |
Engine is running at too low speed - Adjust throttle to full opening |
Cutting level is too low - Use correct cutting height |
Mower deck drive belt installed incorrectly - Reinstall drive belt properly |
Lawn mower leaving uncut grass |
Clogged mower deck - Check cutting deck and clean as necessary |
Blades are excessively dull - Blades need to be sharpened |
Damaged or worn blades - Blades must be changed |
Ground speed is too fast - Operate at slower speed |
Low cutting height - Use correct cutting height |
Bagger is overfilled - Remove grass from bagger |
Blades are scalping the grass |
Lawn is uneven or bumpy - Roll or level the lawn |
Low cutting height - Must be set to high cutting height |
Fast ground speed - Need to slow down |
Deck level is not correct - Adjust the level of mower deck correctly |
Worn or bent blades - Install new blades |
Low tire pressure - Check and inflate the tires |
Mower deck to cut unevenly |
Tires are not properly inflated - Inflate tires as required |
Improper mower deck level - Deck should be adjusted correctly |
Excessive blade dullness - Blades need to be sharpened |
Damaged or worn blades - Blades must be changed |
Discharge chute is plugged - Clean mower deck as required |
Deck shell is damaged - Replace or repair the deck |
Mower spindle is bent or loose - Repair or change the spindle |
Electrical Troubleshooting |
Battery is not charging |
Loose or corroded wire connections - Tighten or service cable connections |
Battery terminal connectors are defective - Terminal connectors should be replaced |
Defective battery - Use a new battery |
Low battery capacity - Charge the battery |
Battery runs out quickly - Battery needs service or replacement |
Terminals are faulty or battery cables are disconnected - Connect wires correctly or change terminals |
Starter motor is not working |
Battery is low or faulty - Recharge or change battery |
Battery cables are disconnected or improperly connected - Inspect cables and connect properly |
Low battery capacity - Charge the battery |
Spark plug dirty or improperly gapped - Clean, gap or change spark plug |
Damaged starter motor or solenoid - Change solenoid or repair starter |
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Lawn and Garden Tractors Technical Specs |