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Kubota T1700X Troubleshooting

The Kubota T1700X is a T-series lawn tractor. This model was manufactured between 1991 and 1996. The Kubota T1700X driveline components: Kawasaki FC540V vertical 1-cylinder forced air-cooled OHV gasoline engine and belt-driven hydrostatic transmission with nfinite forward and reverse gears.

A 32.6 cubic inches (0.54 L) engine output is 17 hp (12.7 kW) at 3200 rpm. The engine has a float fixed main jet carburetor, diaphragm type fuel pump, and transistorized flywheel magneto ignition system. Max. travel speed (forward and reverse): 6.2 mph (10 km/h) / 3.1 mph (5 km/h).

The Kubota T1700X is fitted with 15x6.00-6 front tires and 20x10.00-8 rear tires. The wheel base is 46.9" (1190 mm). The tractor can be equipped with the following attachments: 44" or 48" mid-mount 3-blade mower decks, 42" front-mount snow blower, and 44" front blade with a manual lift system.

Engine Troubleshooting
Engine hard to start or will not start
No fuel in fuel tank - Fill it up
Wrong fuel grade - Change gasoline
Dirty fuel lines - Inspect and clean
Spark plug wire is loose or disconnected - Check the spark plug wire connection, repair or replace
Spark plug is faulty - Change spark plug
Plugged fuel filter - Fuel filter needs to be replaced
Brake pedal not depressed - Press the brake pedal
Carburetor settings incorrect - Adjusting as required
Weak cylinder compression - Inspect cylinder block and change worn parts
Improperly adjusted or worn throttle cable - Change cable or adjust correctly
Unstable engine running
Air intake grill is clogged - Wash or clean as required
Ignition system is defective - Test ignition and replace failed parts
Choke cable is faulty or stuck - Change or service the cable
Air filter is blocked - Service or replace air filter
Dirty or damaged fuel pump - Service or change fuel pump
Engine starts and stalls immediately
Spark plug is damaged - Change spark plug as required
Faulty or clogged carburetor - Service or replace carburetor
Ignition coil is damaged - Ignition coil must be replaced
Bad or damaged valve springs - Replace valve springs
Stuck valves - Service the valves
Engine overheats
Engine oil level is insufficient - Need to add engine oil
Engine overloaded - Reduce engine load
Clogged cooling fins - Wash or clean as required
Too lean fuel mixture in carburetor - Make the correct settings
Bad ignition timing - Set the ignition timing correctly
Valve setting is incorrect - Valves needs to be set correctly
Abnormal engine noise or knocking
Low octane gasoline - Use correct gasoline
Engine is running overloaded - Load reducing required
Engine oil level low - Fill up the engine oil
Improperly adjusted low idle speed - Adjust as required
Dirty or faulty fuel pump - Clean or install new fuel pump
Worn crankshaft or main bearings - Need to install new components
Valve clearance is not correct - Adjust valve clearance according to specifications
Piston rings or cylinder bore are damaged - Replace defective components
Low engine power
Carburetor is incorrectly adjusted or clogged - Adjust the carburetor correctly or clean it
Dirty air filter element - Clean or change air filter
Fuel pump is clogged or faulty - Service or replace fuel pump
Defective ignition - Check ignition system and replace faulty parts
Blown cylinder head gasket - Install new cylinder head gasket
Stuck or burned valves - Service or change valves
Push rod is damaged or worn - Install a new push rod
Damaged cylinder block components - Replace defective components as required
Engine using too much gasoline
Choke opening is not full - Replace or adjust choke cable
Incorrect carburetor main jet adjustment - Adjust it correctly
Faulty or loose spark plug - Re-tighten or replace spark plug
Valves are worn, stuck, or burned - Service or replace valves
Sleeve, piston, or rings are damaged - Replace defective components
Valve clearance is improper - Adjust valve clearance
Engine using too much oil
Seals or gaskets are defective - Worn parts need to be replaced
Valve guides or stems are damaged - Replace defective valves
Piston rings are defective or worn - Change piston rings
Scuffed cylinder liner or piston - Check liner and piston, replace as required
Blocked breather hose or pipe - Clean or replace

Hydrostatic Transmission Troubleshooting
HST transmission makes noise
Speed control pedal linkage is damaged or out of adjustment - Repair or adjust linkage
Transmission overload - Reduce transmission load
Oil is dirty or oil level is too low - Change transmission oil or top up to proper level
Damaged or worn components of hydrostatic transmission - Replace or repair defective components
Hard to shift
Corroded or worn shift linkage - Lubricate or change linkage
Defective or stuck hydrostatic pump - Repair or replace pump
Misadjusted or faulty transmission shift control components - Adjust correctly or replace
Loss of power
Low fluid level - Checking transmission fluid level and add if necessary
Worn or faulty drive pulley - Change pulley
Shifting linkage is broken or misadjusted - Adjust correctly or change linkage
Speed control pedal linkage is damaged or out of adjustment - Replace or adjust linkage
Transmission leaks
Transmission seals or gaskets are broken - Replace seals or gaskets
Final drive shaft leaks - Shaft seals need to be changed
Cracked transmission case - Install a new transmission case

Mower Deck Troubleshooting
Mower vibrates excessively
Mower deck drive pulley is worn or dirty - Replace or clean pulley
Defective or loose drive belt - Adjust belt tension or install a new belt
Bent or unbalanced mower blades - Change or balance blades
Loose blade bolts tightening - Tighten bolts as required
Constant clogging of discharge chute
Mowing speed is too high - Operate at slower speed
Long grass - Adjust mower to lower cutting height
Reduced engine speeds - Open choke fully
Cutting height is too low - Must be set to high cutting height
Drive belt installed improperly - Check drive belt for correct installation
Mower leaving random uncut of grass
Deck clogged with grass clippings - Check cutting deck and clean as necessary
Not sharp blades - Sharpen the blades
Defective or worn blades - Change the blades
Ground speed is too fast - Select a lower speed
Cutting level is too low - Adjust mower to higher cutting height
Filled bagger - Clean bagger
Blade scalped grass
Uneven or bumpy lawn - Lawn leveling required
Mower cuts too low - Need to set high cutting height
High ground speed - Select a slower speed
Improperly leveled mower deck - Level the deck correctly
Worn or bent blades - Blades need to be replaced
Tire pressure is too low - Need to inflate tires
Mower deck to cut unevenly
Tires are not correctly inflated - Inflate tires correctly
Deck level is not correct - Deck needs to be adjusted properly
Blades are not sharp - Need a blade sharpening
Blades are worn or damaged - Blades need to be replaced
Discharge area is clogged - Need to clean the mower deck
Deck housing is broken - Repair or replace the deck
Bent or loose mower spindle - Repair or replace the spindle

Electrical Troubleshooting
Battery cannot be charged
Wiring connections are loose or corroded - Tighten or clean connections
Electrical terminal connectors are faulty - Install new terminal connectors
Battery failing - Change the battery
Starter cranks slowly
Low battery output - Battery needs to be recharged
Battery does not hold charge - Service charging system or install new battery
Bad terminals or disconnected battery cables - Check wiring connections and replace or clean terminals
Starter does not work
Battery is discharged or worn - Charge or change the battery
Wiring is improperly connected or disconnected - Check wiring and connect properly
Low battery output voltage - Battery is drained, charge it
Spark plug worn or incorrectly gapped - Clean, gap or replace spark plug
Defective solenoid or starter motor - Repair starter or change solenoid



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