________________________________________________________________________________________
John Deere 314 Troubleshooting
The
John Deere 314 is a 2WD garden tractor from 300-series. This model was
manufactured between 1979 and 1983. The John Deere driveline includes a Kohler
K321AQS 4-cycle one cylinder air-cooled gasoline engine and Sundstrand 15
shaft-driven hydrostatic transmission with infinite forward and reverse gears.
A 31.3 cubic inches (512 cc) engine has a cylinder bore of 3.50" (89
mm), piston stroke of 3.25" (82.6 mm), and rated power of 14 hp (10.5
kW). The maximum forward speed - 6.8 mph (10.9 km/h), maximum reverse
speed - 3.8 mph (6 km/h).
The John Deere 314 garden tractor is equipped with a manual steering
system, shoe brakes, 16x6.50-8 front tires, and 23x10.50-12 rear tires.
The wheelbase is 46 inches (1160 mm). Compatible attachments for the
tractor: 38", 46" mid-mount 3-blade right-discharge mower decks with
hydraulic lift system, 54" front-mount blade, 46" front-mount
single-stage snow blower.
| Engine Troubleshooting |
| Engine won't start or difficult to start |
| Empty gas tank - Fill it up |
| Improper fuel grade - Use quality gasoline |
| Air in fuel tank - Bleed fuel tank |
| Disconnected or loose spark plug wire - Check the spark plug wire connection, repair or replace |
| Spark plug is damaged - Spark plug need to be replaced |
| Fuel filter is clogged - Change fuel filter |
| Faulty safety switch - Change damaged switch |
| Carburetor is not adjusted - Check carburetor float adjustment |
| Low cylinder compression - Check cylinder block and replace worn parts |
| Worn or unadjusted choke cable - Change cable or adjust correctly |
| Cooling fins are plugged - Clean and wash as required |
| Ignition system problems - Check ignition and replace faulty components |
| Choke cable is stuck or defective - Replace or clean the cable |
| Dirty air filter element - Clean or replace air filter |
| Clogged or defective fuel pump - Service or replace fuel pump |
| Engine starts but immediately shuts off |
| Spark plug is faulty - Replace spark plug |
| Clogged or defective carburetor - Service or repair carburetor |
| Ignition coil is faulty - Ignition coil must be replaced |
| Broken or bad valve springs - Install new valve springs |
| Valves sticking - Valves need to be cleaned |
| Low engine oil level - Check and refill engine oil |
| Excessive engine load - Load reducing is recommended |
| Air intake screen is plugged - Need to clean or wash |
| Carburetor is running lean - Use proper settings |
| Improper ignition timing - Ignition timing needs to be adjusted correctly |
| Valve setting is improper - Valves needs to be adjusted properly |
| Stale fuel - Use correct fuel |
| Engine overloaded - Load reducing is recommended |
| Engine oil level is low - Check oil level and add oil as required |
| Improperly adjusted low idle speed - Adjust the low idle speed |
| Fuel pump is dirty or defective - Service or change fuel pump |
| Crankshaft or main bearings are worn out - Have bearings or crankshaft replaced |
| Excessive valve clearance - Need to adjust valve clearance |
| Damaged piston rings or cylinder bore - Replace defective components |
| Carburetor is incorrectly adjusted or clogged - Clean or correctly adjust carburetor |
| Air filter element is plugged - Replace or clean air filter |
| Fuel pump is damaged or dirty - Check fuel pump and change if required |
| Ignition failure - Test ignition and replace failed parts |
| Cylinder head gasket is worn - Install new cylinder head gasket |
| Burned or stuck valves - Replace or service valves |
| Damaged or worn push rod - Push rod needs to be changed |
| Damaged cylinder block parts - Defective components need to be replaced |
| Engine using too much gasoline |
| Throttle not fully open - Check throttle cable and adjust as required |
| Carburetor main jet is improperly adjusted - Adjust the carburetor main jet correctly |
| Loose or defective spark plug - Spark plug need to be tightened or replaced |
| Stuck, worn, or burned valves - Clean or replace valves |
| Sleeve, rings, or piston are damaged - Change defective parts |
| Valve clearance is improper - Check and adjust |
| Excessive engine oil consumption |
| Seals or gaskets are wearing excessively - Replace defective parts |
| Valve guides and stems are worn - Install new valves |
| Piston rings are stuck or worn - Piston rings need to be replaced |
| Scuffed piston or cylinder liner - Check liner and piston, change as required |
| Blocked breather pipe or hose - Change or clean |
| Hydrostatic Transmission Troubleshooting |
| Hydrostatic transmission is making noise |
| Bent or unadjusted speed control pedal linkage - Adjust or replace linkage |
| Excessive loading - Reduce the load is required |
| Fluid is contaminated or fluid level is insufficient - Pour fresh fluid or add transmission fluid to proper level |
| Defective or worn transmission parts - Check transmission parts for damage or wear and replace if required |
| Stuck or damaged gshift linkage - Replace or repair the linkage |
| Hydrostatic pump is defective or blocked - Repair or replace pump |
| Defective or unadjusted transmission shift control components - Adjust correctly or replace |
| Transmission fluid insufficient - Add fluid to the transmission housing |
| Drive sheave is worn or faulty - Replace sheave |
| Shifting linkage is broken or misadjusted - Adjust properly or replace linkage |
| Worn or unadjusted speed control linkage - Change or adjust linkage |
| Damaged transmission seals or gaskets - Replace seals or gaskets |
| Leaking final drive shaft - Replace shaft seals |
| Cracked transmission case - Install a new transmission case |
| Mower Deck Troubleshooting |
| Mower vibration is excessive |
| Worn or dirty mower drive pulley - Change or clean pulley |
| Drive belt is damaged or loose - Belt needs to be adjusted or replaced |
| Bent or unbalanced cutting blades - Balance or change as needed |
| Loose blade mounting bolts - Tighten it fast |
| Discharge chute is constantly plugged |
| High ground speed - Select a lower speed |
| Grass is too long - Use a lower cutting height |
| Low engine speeds - Choke is not fully opening |
| Cutting level is too low - Change cutting height adjustment |
| Mower deck drive belt installed incorrectly - Check drive belt for correct installation |
| Deck is plugged with grass - Check cutting deck and clean as necessary |
| Not sharp blades - Blades need to be sharpened |
| Damaged or worn blades - Replace the blades |
| Fast mowing speed - Use a slower speed |
| Cutting level is too low - Use correct cutting height |
| Bagger is overfilled - Bagger must be empty |
| Lawn is uneven or bumpy - Lawn leveling required |
| Cutting level is too low - Use a higher cutting height |
| Fast mowing speed - Select a slower speed |
| Deck level is not correct - Level the deck properly |
| Worn or bent blades - Install new blades |
| Low tire pressure - Check and inflate the tires |
| Mower deck to cut unevenly |
| Low tire pressure - Inflate tires as required |
| Improperly leveled mower deck - Deck should be adjusted correctly |
| Blades are too dull - Need a blade sharpening |
| Blades are worn or damaged - Install new blades |
| Discharge area is clogged - Inspect and clean cutting deck |
| Deck shell is damaged - Rebuild or change mower deck |
| Loose or faulty mower spindle - Change or repair the spindle |
| Electrical Troubleshooting |
| Battery won’t charge |
| Loose or corroded electrical wiring connections - Clean or tighten connections |
| Faulty battery terminal clamps - Terminal clamps should be changed |
| Faulty cell in battery - Change the battery |
| Low battery output voltage - Battery is drained, recharge it |
| Battery drains quickly - Service or change the battery |
| Disconnected battery cables or bad terminals - Connect wires properly or change terminals |
| Battery is drained or defective - Charge or replace the battery |
| Battery cables are disconnected or improperly connected - Inspect cables and connect properly |
| Low battery output voltage - Charge the battery |
| Incorrectly gapped or worn spark plug - Clean, gap or replace spark plug |
| Solenoid or starter motor is faulty - Replace solenoid or repair starter |
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
| Lawn and Garden Tractors Technical Specs |
