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Kubota T1760 Troubleshooting

The Kubota T1760 lawn tractor was manufactured between 1997 and 2001. The components of Kubota T1760 driveline system: a 26.7 cu.in (437 cc) Kawasaki FD501V 4-cycle vertical shaft V-twin cylinder gasoline engine with a rated power of 17 Hp (12.7 kW), and hydrostatic transmission with infinite forward and reverse gears.

The engine has a float type carburetor with fixed main jet, diaphragm type mechanical fuel pump, and full pressure lubrication system. Max travel speed (forward/reverse): 5.9 mph (9.5 kph) and 3.1 mph (5 kph).

The Kubota T1760 is equipped with a manual steering system, internal expanding brakes, 15x6.00-6 front tires, and 20x10.00-8 rear tires. The wheelbase is 47" (1200 mm). The tractor is compatible with a 48" mid-mount 3-blade Kubota RC48LT mower deck with cutting height of 1.0-4.0" (25-100 mm), 38" front-mount Kubota T2738 snowblower, and 46" front-mount Kubota T2083 blade.

Engine Troubleshooting
Engine won't start or hard to start
Fuel tank is empty - Fill gasoline up
Improper fuel grade - Use correct gasoline grade
Dirty fuel lines - Inspect and clean
Spark plug wire is loose or disconnected - Check spark plug wiring connection, repair or change
Defective spark plug - Spark plug need to be replaced
Plugged fuel filter - Fuel filter needs changing
Faulty safety switch - Change damaged switch
Carburetor incorrectly set - Set carb correctly
Low engine compression - Inspect cylinder block and change defective components
Choke cable is not adjusted properly or worn - Adjust correctly or replace the cable
Rough engine running
Air intake grill is clogged - Clean and wash as required
Ignition system failure - Check ignition system and replace faulty parts
Throttle cable is stuck or faulty - Clean or change the cable
Air filter is blocked - Clean or replace air filter
Clogged or defective fuel pump - Inspect fuel pump and change as required
Engine starts and then stalls
Defective spark plug - Replace spark plug
Carburetor is dirty or faulty - Clean or change carburetor
Defective ignition coil - Ignition coil must be replaced
Loose or worn valve springs - Install new valve springs
Valves are stuck - Clean the valves
Engine overheated
Engine oil level is low - Check and refill engine oil
Engine is overloaded - Load reducing is recommended
Cooling fins are plugged - Wash or clean as required
Too lean carburetor mixture - Set the carburetor correctly
Incorrect ignition timing - Set the ignition timing correctly
Incorrect valve setting - Valves needs to be set correctly
Engine knocking or noise
Low octane gasoline - Use correct gasoline
Engine is overloaded - Reduce the load
Insufficient engine oil - Fill up the oil to required level
Incorrectly set low idle speed - Adjust the low idle speed
Dirty or faulty fuel pump - Test fuel pump and replace if necessary
Crankshaft or main bearings failure - Need to install new components
Valve clearance is improper - Check and adjust
Damaged piston rings or cylinder bore - Change defective parts
Low engine power
Dirty or improperly adjusted carburetor - Adjust the carburetor properly or clean it
Dirty air filter element - Change or clean air filter
Fuel pump is dirty or defective - Service or change fuel pump
Defective ignition system - Inspect ignition system and change failed components
Cylinder head gasket is blown - Install new cylinder head gasket
Valves are burned or stuck - Service or replace valves
Bent or worn push rod - Push rod needs to be changed
Cylinder block parts are damaged - Replace defective components as required
Excessive fuel consumption
Throttle is not fully open - Change or adjust throttle cable
Improper carburetor main jet adjustment - Adjust main jet as required
Spark plug is loose or faulty - Spark plug need to be tightened or replaced
Valves are stuck, burned, or worn - Change or clean valves
Sleeve, rings, or piston are damaged - Replace defective parts
Improper valve clearance - Adjust valve clearance
Engine consuming too much oil
Damaged gaskets or seals - New components need to be installed
Damaged valve stems or valve guides - Replace the valves
Worn or broken piston rings - Have piston rings replaced
Worn cylinder liner or piston - Check liner and piston, replace as required
Blocked breather hose or pipe - Service or replace

Hydrostatic Transmission Troubleshooting
HST transmission noise
Speed control pedal linkage is damaged or out of adjustment - Adjust or install new linkage
Transmission overloaded - Reduce the load is required
Fluid is contaminated or fluid level is insufficient - Pour fresh fluid or add transmission fluid to proper level
Transmission components are damaged or worn - After disassembly and inspection, replace faulty components
Difficult shifting
Shift linkage is damaged or loose - Replace or service the linkage
Seized or worn hydrostatic pump - Change or repair pump
Transmission shift control components are worn or unadjusted - Change or adjust correctly
Power is insufficient
Transmission fluid level is low - Need to add transmission fluid
Worn or damaged drive sheave - Change sheave
Misadjusted or faulty shifting linkage - Adjust correctly or replace linkage
Speed control linkage is defective or unadjusted - Adjust or install new linkage
Transmission leakage
Transmission gaskets or seals are damaged - Replace gaskets or seals
Final drive shaft is leaking - Install new shaft seals
Transmission case is cracked - Change broken case

Mower Deck Troubleshooting
Mower vibrates excessively
Clogged or damaged mower drive sheave - Replace or clean sheave
Drive belt is defective or loose - Adjust belt tension or install a new belt
Warped or not balanced mower blades - Balance or change blades
Loose blade bolts tightening - Bolts should be tightened
Discharge chute is regularly plugged
Fast ground speed - Select a lower speed
Grass is too high - Must be set to low cutting height
Reduced engine rpm - Choke is not fully opening
Mower deck set to low cutting - Adjust mower to higher cutting height
Mower deck drive belt installed incorrectly - Drive belt must be installed correctly
Patches of grass uncut
Deck clogged with grass clippings - Check cutting deck and clean as necessary
Blades are excessively dull - Blades need to be sharpened
Defective or worn blades - Blades need to be replaced
Fast mowing speed - Use a slower speed
Cutting height is too low - Must be set to high cutting height
Bagger is overfilled - Remove grass from bagger
Blades scalping grass
Bumpy or unleveled lawn - Lawn needs to be leveled
Low cutting height - Use correct cutting height
Mowing speed is too high - Select a lower speed
Improperly leveled mower deck - Deck needs to be adjusted properly
Worn or bent blades - Blades must be changed
Low tire pressure - Need to inflate tires
Uneven cut
Tires are not correctly inflated - Inflate tires as required
Deck is not leveled correctly - Deck needs to be adjusted properly
Blades are too dull - Sharpen the blades
Blades are defective or worn - Blades need to be replaced
Discharge chute is plugged - Mower deck needs to be cleaned
Deck shell is broken - Rebuild or change mower deck
Loose or faulty mower spindle - Replace or repair the spindle

Electrical Troubleshooting
Battery does not charge
Loose or corroded wire connections - Clean or tighten connections
Battery terminal clamps are faulty - Replace terminal clamps
Bad cell in battery - Battery change required
Starter cranks slowly
Battery capacity is low - Low battery charging, charge as required
Battery will not hold charge - Battery needs service or replacement
Terminals are faulty or battery cables are disconnected - Check cables and change or clean terminals
Starter motor won't turn
Battery is drained or worn - Battery needs to be recharged or replaced
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly
Low battery output voltage - Battery needs to be recharged
Improperly gapped or dirty spark plug - Clean, gap or replace spark plug
Faulty solenoid or starter motor - Repair starter or change solenoid



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