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John Deere D105 Troubleshooting
The
John Deere D105 is a lawn tractor from D100 series. This model was manufactured
between 2013 and 2017. The John Deere D105 driveline includes a Briggs and
Stratton Intek 31G777 four-cycle 1-cylinder OHV vertical shaft air-cooled
gasoline engine and RT400 belt-driven mechanical CVT transmission.
A 30.5 cubic inches (500 cc) engine has a cylinder bore of 3.56" (91
mm), piston stroke of 3.06" (78 mm), and rated power of 17.5 hp (13 kW).
Max. travel speed (forward/reverse): 5 mph (8 kph) and 2.3 mph (3.7
kph).
The John Deere D105 is equipped with a manual steering system, disc
brakes, 15x6.00-6 front tires, and 20x8.00-8 rear tires. The wheelbase
is 49 inches (1240 mm). The tractor is compatible with a 42" mid-mount
2-blade mower deck with cutting height of 1-4" (25-101 mm) and manual
lifting system, 46" front blade, 44" front-mount snow blower with
mechanical lift.
| Engine Troubleshooting |
| Engine difficult to start or will not start |
| No gasoline in tank - Add gasoline |
| Low-quality gasoline - Use quality fuel |
| Air in fuel system - Bleed fuel system |
| Faulty spark plug wire connection - Check spark plug wiring connection, repair or change |
| Defective spark plug - Change spark plug |
| Fuel filter is dirty - Change fuel filter |
| Safety contact for brake pedal defective - Install new part |
| Carburetor settings incorrect - Adjusting as required |
| Low cylinder compression - Check cylinder block and replace worn parts |
| Worn or improperly adjusted choke cable - Adjust properly or replace the cable |
| Cooling fins are blocked - Clean and wash as required |
| Defective ignition - Inspect ignition system and change failed components |
| Defective or stuck throttle cable - Service or change the cable |
| Clogged air filter - Service or change air filter |
| Clogged or defective fuel pump - Service or change fuel pump |
| Engine starts and then shuts off |
| Spark plug is defective - Install new spark plug |
| Defective or clogged carburetor - Clean or replace carburetor |
| Ignition coil is not working - Change ignition coil as required |
| Worn or loose valve springs - Install new valve springs |
| Valves sticking - Valves must be cleaned |
| Engine oil level low - Need to add engine oil |
| Excessive engine load - Load reducing is recommended |
| Cooling fins are clogged - Need to wash or clean |
| Carburetor mixture is too lean - Adjust carburetor properly |
| Ignition timing is improper - Adjust ignition timing as required |
| Improper valve setting - Valves needs to be adjusted properly |
| Engine knocking sound or abnormal noise |
| Stale gasoline - Use proper fuel |
| Excessive engine load - Reduce the load |
| Low engine oil level - Check and refill engine oil |
| Incorrect low idle setting - Adjust the low idle speed |
| Fuel pump is defective or dirty - Service or replace fuel pump |
| Main bearings or crankshaft wear - Repair or replace defective parts |
| Valve clearance is incorrect - Check and adjust |
| Cylinder bore or piston rings are damaged - Replace faulty components |
| Carburetor is dirty or improperly adjusted - Service or correctly adjust carburetor |
| Air filter is dirty - Replace or service air filter |
| Fuel pump is damaged or dirty - Test fuel pump and replace if necessary |
| Ignition system failure - Inspect ignition system and change faulty parts |
| Blown cylinder head gasket - Replace cylinder head gasket |
| Burned or stuck valves - Replace or service valves |
| Worn or defective push rod - Push rod needs to be changed |
| Faulty cylinder block components - Change defective components |
| Engine using too much gasoline |
| Throttle not fully open - Check throttle cable and adjust as required |
| Carburetor main jet adjustment is incorrect - Adjust the carburetor main jet properly |
| Defective or loose spark plug - Spark plug need to be replaced or tightened |
| Valves are worn, burned or stuck - Service or replace valves |
| Sleeve, piston, or rings are damaged - Replace defective components |
| Improper valve clearance - Check and adjust |
| Engine using too much oil |
| Gaskets or seals may be damaged - Worn parts need to be replaced |
| Valve guides and stems are worn - Valves need to be changed |
| Damaged or seized piston rings - Change the piston rings as required |
| Cylinder liner or piston is worn - Inspect liner and piston, change as necessary |
| Clogged breather pipe or hose - Service or change |
| Automatic Transmission Troubleshooting |
| Automatic transmission is excessively noisy |
| Defective or not adjusted speed control pedal linkage - Adjust or repair linkage |
| Excessive loading - The load should be reduced |
| Dirty transmission fluid or insufficient fluid level - Add fluid to correct level or fill the transmission with fresh fluid |
| Transmission components are damaged or worn - Change or repair defective parts |
| Shift linkage is loose or broken - Service or change the linkage |
| Hydrostatic pump is stuck or worn - Repair or replace pump |
| Misadjusted or faulty transmission shift control components - Replace or adjust as required |
| Transmission fluid level is low - Checking transmission fluid level and add if necessary |
| Worn or damaged drive sheave - Install a new sheave |
| Shifter linkage is faulty or not adjusted - Change or adjust linkage |
| Defective or not adjusted speed control pedal linkage - Adjust or replace linkage |
| Transmission gaskets or seals are worn - Seals and gaskets need to be replaced |
| Final drive shaft leaks - Install new shaft seals |
| Transmission case is cracked - Replace case or transmission assembly |
| Mower Deck Troubleshooting |
| Excessive mower vibration |
| Worn or dirty mower drive pulley - Replace or clean pulley |
| Loose or defective drive belt - Adjust belt tension or install a new belt |
| Unbalanced or warped mower blades - Replace or balance blades |
| Loose blade mounting bolts - Bolts should be tightened |
| Discharge chute is constantly plugged |
| Mowing speed is too high - Select a slower speed |
| Grass is too long - Use a lower cutting height |
| Engine is running at too low speed - Adjust throttle to full opening |
| Cutting level is too low - Change cutting height adjustment |
| Drive belt installed improperly - Install drive belt correctly |
| Deck clogged with grass clippings - Mower deck needs to be cleaned |
| Blades are not sharp - Blades need to be sharpened |
| Blades are defective or worn - Replace the blades |
| High mowing speed - Operate at slower speed |
| Mower deck set to low cutting - Use a higher cutting height |
| Grass bag is full - Empty the grass bag |
| Uneven or bumpy lawn - Roll or level the lawn |
| Mower deck set to low cutting - Use correct cutting height |
| Ground speed is too fast - Use a lower speed |
| Incorrectly leveled mower deck - Deck should be adjusted correctly |
| Damaged or bent blades - Replace the blades |
| Tires are not correctly inflated - Inflate tires as required |
| Mower deck to cut unevenly |
| Low tire pressure - Check and inflate the tires |
| Incorrectly leveled mower deck - Adjust mower deck level properly |
| Blades are not sharp - Sharpen the blades |
| Blades are defective or worn - Change the blades |
| Cutting deck clogging - Check cutting deck and clean as necessary |
| Broken mower deck shell - Repair or change the deck |
| Mower spindle is loose or defective - Install new spindle or repair it |
| Electrical Troubleshooting |
| Battery does not charge |
| Electrical cable connections are loose or corroded - Tighten or service connections |
| Battery terminal clamps are faulty - Terminal clamps need to be replaced |
| Battery is defective - Battery replacement required |
| Low battery power - Battery is drained, recharge it |
| Battery runs out quickly - Service charging system or change battery |
| Disconnected cables or faulty battery terminals - Connect wiring correctly or install new terminals |
| Battery is low or faulty - Need to charge or replace the battery |
| Disconnected or incorrectly connected wires - Inspect battery wires and connect correctly |
| Low battery capacity - Recharge the battery |
| Spark plug gapped improperly or faulty - Clean, gap or change spark plug |
| Defective solenoid or starter motor - Starter/solenoid should be replaced |
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| Lawn and Garden Tractors Technical Specs |
