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Husqvarna TS346 Troubleshooting

The Husqvarna TS346 garden tractor was manufactured between 2014 to 2019. The Husqvarna TS 346 driveline consists of a 44.2 cubic inches (724 cc) Briggs and Stratton 44S677 4-cycle vertical-shaft V-twin OHV air-cooled gasoline engine with a maximum power of 22 hp (16.4 kW), or 44.2 cubic inches (724 cc) Briggs and Stratton 44U677 4-cycle vertical-shaft V-twin OHV air-cooled gasoline engine with a maximum power of 22 hp (16.4 kW), and Tuff Torq K57R belt-driven hydrostatic transmission with infinite forward and reverse gears.

The maximum forward speed - 6.6 mph (10.5 kph), maximum reverse speed - 2.8 mph (4.5 kph). The Husqvarna TS 346 lawn tractor is equipped with a manual steering, internal wet disc brakes, 15x6.00-6 front tires, and 20x10.00-8 rear tires. Compatible attachments for the tractor: 46" mid-mount 2-blade side discharge mower deck with cutting height of 1.5-4.0 in (38-102 mm), electric blade engagement, six cut positions, two anti-scalp wheels, and mechanical lifting system.

Engine Troubleshooting
Engine doesn't start or difficult to start
Fuel tank is empty - Fill it up
Wrong grade of gasoline - Change gasoline
Dirty fuel lines - Inspect and clean
Defective spark plug wire connection - Check spark plug wiring connection, repair or change
Defective spark plug - Change spark plug
Fuel filter is clogged - Fuel filter needs changing
Safety contact for brake pedal defective - Install new part
Carburetor is not working properly - Inspect and adjust
Bad compression - Check and change damaged parts
Worn or unadjusted choke cable - Change cable or adjust properly
Rough engine running
Cooling fins are clogged - Wash or clean as required
Ignition system is defective - Check ignition system and replace faulty parts
Throttle cable is stuck or faulty - Replace or service the cable
Dirty air filter element - Service or replace air filter
Clogged or defective fuel pump - Test fuel pump and replace if necessary
Engine starts and stops suddenly
Spark plug is damaged - Replace spark plug
Clogged or faulty carburetor - Service or change carburetor
Ignition coil is not working - Ignition coil should be replaced
Loose or broken valve springs - New valve springs need to be installed
Valves are stuck - Clean the valves
Engine overheated
Engine oil level is low - Add oil to the engine crankcase
Engine is overloaded - Reduce load
Clogged cooling fins - Wash or clean as required
Too lean carburetor mixture - Make the correct settings
Ignition timing is improper - Set the ignition timing properly
Wrong valve setting - Valves needs to be adjusted properly
Engine knocking sound or abnormal noise
Stale gasoline - Change fuel
Engine overloaded - Load reducing required
Engine oil insufficient - Fill up the oil to required level
Low idle speed setting is not correct - Adjust as required
Clogged or defective fuel pump - Check fuel pump and replace if necessary
Crankshaft or main bearings failure - Worn parts replacement required
Valve clearance is improper - Adjust to proper valve clearance
Damaged piston rings or cylinder bore - Replace defective components
Engine power is insufficient
Carburetor is clogged or incorrectly adjusted - Adjust carburetor properly or service it
Dirty air filter element - Service or replace air filter
Clogged or defective fuel pump - Test fuel pump and change if necessary
Ignition failure - Test ignition and replace failed parts
Defective cylinder head gasket - Cylinder-head gasket replacement required
Valves are stuck or burned - Service or change valves
Bent or worn push rod - Change push rod
Cylinder block components are faulty - Change defective components
High fuel consumption
Throttle did not open fully - Replace or adjust throttle cable
Carburetor main jet is incorrectly adjusted - Adjust it correctly
Spark plug is loose or defective - Tighten or change the spark plug
Stuck, worn, or burned valves - Service or replace valves
Sleeve, piston, or rings are damaged - Change faulty parts
Valve clearance is wrong - Adjust valve clearance
Excessive engine oil consumption
Defective seals or gaskets - Change worn parts according to specifications
Valve guides and stems are worn - Change the valves
Worn or broken piston rings - Install new piston rings
Scuffed cylinder liner or piston - Check piston and liner, change as required
Blocked breather hose or pipe - Service or change

Hydrostatic Transmission Troubleshooting
HST transmission noises
Worn or unadjusted speed control linkage - Replace or adjust linkage
Transmission overload - Load needs to be reduced
Insufficient oil level or contaminated oil - Add oil to the correct level or fill the transmission with fresh oil
Worn or defective parts of the hydrostatic transmission - Check hydrostatic transmission components for defect or damage and change if necessary
Hard shifting
Shift linkage is rusty or worn - Lubricate or replace the linkage
Hydrostatic pump is seized or faulty - Repair or change pump
Worn or misadjusted transmission shift control parts - Adjust properly or change
Lack of power
Low fluid level - Add fluid to the transmission housing
Drive pulley is worn or faulty - Install a new pulley
Unadjusted or broken shift linkage - Replace or adjust linkage
Bent or unadjusted speed control pedal linkage - Adjust or change linkage
Transmission leaks
Worn transmission seals or gaskets - Change seals or gaskets
Final drive shaft leaks - Install new shaft seals
Transmission case is cracked - Change broken case

Mower Deck Troubleshooting
Excessive mower vibration
Mower deck drive pulley is worn or dirty - Clean or change pulley
Drive belt is damaged or loose - Install a new belt or adjust belt tension
Not balanced or bent mower blades - Balance or change blades
Blade mounting bolts are loose - Tighten it fast
Constant clogging of discharge chute
High ground speed - Use a slower speed
Tall grass - Use a lower cutting height
Engine is running at too low speed - Open throttle fully
Mower cuts too low - Must be set to high cutting height
Drive belt installation is not correct - Drive belt must be installed correctly
Lawn mower leaving uncut grass
Cutting deck is clogged - Inspect and clean cutting deck
Excessive blade dullness - Need to sharpen the blades
Damaged or worn blades - Blades need to be replaced
High mowing speed - Select a lower speed
Low cutting height - Must be set to high cutting height
Grass bag is full - Empty the grass bag
Blades are scalping the grass
Bumpy or unleveled lawn - Lawn needs to be leveled
Low cutting height - Must be set to high cutting height
High mowing speed - Need to slow down
Incorrectly leveled mower deck - Deck needs to be adjusted properly
Damaged or bent blades - Change the blades
Tires are not correctly inflated - Need to inflate tires
Mower cutting is uneven
Tires are not correctly inflated - Check and inflate the tires
Incorrect level of mower deck - Adjust the level of mower deck correctly
Blades are too dull - Need a blade sharpening
Damaged or worn blades - Blades must be changed
Discharge chute is plugged - Inspect and clean cutting deck
Deck shell is damaged - Replace or repair the deck
Mower spindle is loose or defective - Repair or change the spindle

Electrical Troubleshooting
Battery does not charge
Wiring connections are corroded or loose - Service or tighten cable connections
Defective battery terminal clamps - Terminal clamps should be changed
Worn-out battery - Change the battery
Starter turns slowly
Low battery power - Battery is drained, recharge it
Battery is draining quickly - Service charging system or change battery
Bad battery terminals or disconnected wiring - Connect wiring correctly or install new terminals
Starter does not work
Battery is drained or defective - Charge or replace the battery
Disconnected or improperly connected wiring harness - Inspect battery wiring harness and connect as required
Battery capacity is low - Low battery charging, charge as required
Incorrectly gapped or worn spark plug - Clean, gap or replace spark plug
Starter motor or solenoid failing - Replace solenoid or repair starter



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