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John Deere GX345 Troubleshooting
The
John Deere GX345 is a garden tractor from GX300 series. This model was
manufactured between 2002 and 2005. The components of John Deere GX345 driveline
system: Kawasaki FD611V 4-stroke V-twin cylinder vertical shaft OVH liquid
cooled gasoline engine and Tuff Torq K71 belt-driven hydrostatic transmission
with infinite forward and reverse gears.
A 37.7 cubic inches (617 cc) engine has a cylinder bore of 2.91" (74
mm), piston stroke of 2.68" (68 mm), and rated power of 20 hp (14.9 kW).
The maximum forward speed - 7 mph (11.3 kph), maximum reverse speed - 4
mph (6.4 kph).
The garden tractor is equipped with a power steering system, internal
wet disc brakes, 16x6.50-8 front tires, and 24x12.00-12 rear tires. The
wheel base is 49.3" (1250 mm). The John Deere GX345 is compatible with
48" or 54" mid-mount 3-blade mower decks with cutting height of 1.0-4.0"
(25-102 mm), 13 cut positions, and manual lift system, or 48"
front-mount blade.
| Engine Troubleshooting |
| Engine doesn't start or hard to start |
| Gas tank is empty - Add fuel |
| Improper fuel grade - Change fuel |
| Dirt and debris in fuel system - Remove debris and dirt |
| Spark plug wire is disconnected or loose - Check spark plug wiring connection, repair or change |
| Defective spark plug - Change spark plug |
| Plugged fuel filter - Fuel filter needs changing |
| Brake pedal not depressed - Press the brake pedal |
| Carburetor is not adjusted - Check carburetor float adjustment |
| Weak cylinder compression - Inspect cylinder block and change worn parts |
| Throttle cable is adjusted improperly or worn - Replace cable or adjust correctly |
| Cooling fins are plugged - Need to wash or clean |
| Ignition system problems - Inspect ignition system and change failed components |
| Choke cable is faulty or stuck - Service or change the cable |
| Dirty air filter element - Service or replace air filter |
| Fuel pump is dirty or defective - Service or replace fuel pump |
| Engine starts and stops suddenly |
| Spark plug is damaged - Replace spark plug |
| Carburetor is dirty or faulty - Service or change carburetor |
| Ignition coil is defective - Change ignition coil as required |
| Broken or loose valve springs - Replace valve springs |
| Valves sticking - Valves need to be cleaned |
| Engine oil level is insufficient - Fill up the engine oil |
| Engine overload - Load reducing required |
| Plugged cooling fins - Clean and wash as required |
| Too lean carburetor mixture - Set the carburetor properly |
| Incorrect ignition timing - Adjust ignition timing as required |
| Valve setting is wrong - Valves needs to be set correctly |
| Low octane gasoline - Change gasoline |
| Engine is running overloaded - Reduce the load |
| Lack of engine oil - Check and refill engine oil |
| Low idle speed adjustment is incorrect - Correct the settings |
| Dirty or faulty fuel pump - Test fuel pump and replace if necessary |
| Worn crankshaft or main bearings - Replace crankshaft or bearings |
| Valve clearance is not correct - Check and adjust |
| Piston rings or cylinder bore are worn - Replace defective parts |
| Engine power is insufficient |
| Carburetor is clogged or incorrectly adjusted - Service or correctly adjust carburetor |
| Clogged air filter - Clean or replace air filter |
| Fuel pump is dirty or defective - Clean or install new fuel pump |
| Ignition system malfunction - Inspect ignition system and change failed components |
| Cylinder head gasket is damaged - Replace the gasket as required |
| Valves are burned or stuck - Clean or replace valves |
| Push rod is bent or worn - Install a new push rod |
| Cylinder block components are worn - Change defective parts |
| Engine using too much gasoline |
| Throttle not fully open - Check throttle cable and adjust as required |
| Carburetor main jet is improperly adjusted - Adjust it correctly |
| Defective or loose spark plug - Tighten or replace spark plug |
| Valves are worn, stuck, or burned - Change or clean valves |
| Rings, sleeve, or piston are damaged - Change defective parts |
| Improper valve clearance - Need to adjust valve clearance |
| Excessive engine oil consumption |
| Seals or gaskets are defective - Worn parts need to be replaced |
| Valve stems or guides are damaged - Replace the valves |
| Damaged or seized piston rings - Change the piston rings as required |
| Cylinder liner or piston is damaged - Check piston and liner, change as required |
| Breather pipe or hose is blocked - Clean or change |
| Hydrostatic Transmission Troubleshooting |
| Hydrostatic transmission makes excessive noise |
| Speed control linkage is defective or unadjusted - Replace or adjust linkage |
| Excessive transmission load - Load needs to be reduced |
| Insufficient oil level or contaminated oil - Change transmission oil or top up to proper level |
| Transmission parts are worm or defective - Replace or repair defective components |
| Loose or broken shift linkage - Change defective linkage |
| Seized or worn hydrostatic pump - Replace or repair pump |
| Faulty or misadjusted transmission shift control parts - Adjust properly or change |
| Low oil level - Fill the transmission housing to proper oil level |
| Drive pulley is defective or worn - Change pulley |
| Unadjusted or broken shift linkage - Adjust correctly or replace linkage |
| Speed control linkage is defective or unadjusted - Repair or adjust linkage |
| Transmission seals or gaskets are broken - Install new seals or gaskets |
| Leaking final drive shaft - Install new shaft seals |
| Cracked transmission case - Install a new transmission case |
| Mower Deck Troubleshooting |
| Mower vibrates too much |
| Drive pulley of mower deck is damaged or dirty - Replace or service pulley |
| Loose or defective drive belt - Belt needs to be adjusted or replaced |
| Mower blades are bent or out of balance - Balance or change as needed |
| Blade mounting bolts are loose - Bolts should be tightened |
| Discharge chute keeps clogging |
| High mowing speed - Operate at slower speed |
| Tall grass - Adjust mower to lower cutting height |
| Reduced engine rpm - Throttle is not fully open |
| Cutting level is too low - Need to set high cutting height |
| Mower drive belt installation is improper - Install drive belt correctly |
| Clogged mower deck - Clean mower deck as required |
| Blades are too dull - Sharpen the blades |
| Worn or defective blades - Blades must be changed |
| Fast ground speed - Operate at slower speed |
| Low cutting height - Change cutting height adjustment |
| Full bagger - Empty the bagger |
| Lawn is bumpy or not smooth - Roll or level the lawn |
| Mower deck set to low cutting - Adjust mower to higher cutting height |
| High mowing speed - Select a lower speed |
| Improperly leveled mower deck - Adjust mower deck level properly |
| Worn or bent blades - Change the blades |
| Tires are not correctly inflated - Need to inflate tires |
| Tires are not properly inflated - Need to inflate tires |
| Deck level is not correct - Level the deck properly |
| Not sharp blades - Need to sharpen the blades |
| Blades are defective or worn - Blades must be changed |
| Discharge area is clogged - Check cutting deck and clean as necessary |
| Deck shell is broken - Replace or rebuild mower deck |
| Loose or faulty mower spindle - Repair or replace the spindle |
| Electrical Troubleshooting |
| Battery is not charging |
| Wiring connections are loose or corroded - Service or tighten connections |
| Battery terminal clamps are faulty - Change terminal clamps |
| Worn-out battery - Install a new battery |
| Battery power is low - Low battery charging, charge as required |
| Battery is draining quickly - Service charging system or replace battery |
| Battery cables are disconnected or terminals are faulty - Check cable connections and change or clean terminals |
| Starter motor is not working |
| Battery is low or faulty - Charge or replace the battery |
| Wire harness is disconnected or incorrectly connected - Check wire harness and connect as required |
| Low battery power - Recharge the battery |
| Spark plug gapped improperly or faulty - Clean and gap or replace |
| Faulty solenoid or starter motor - Repair starter or change solenoid |
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| Lawn and Garden Tractors Technical Specs |
