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Husqvarna CT 126 Troubleshooting
The
Husqvarna CT 126 is a two-wheel drive lawn tractor. This model was manufactured
between 2009 and 2014.
The Husqvarna CT126 driveline components: Briggs and Stratton 21R707
Intek single cylinder OHV vertical shaft air-cooled gasoline engine with
a rated power of 11.5 hp (8.5 kW), or Briggs and Stratton 219807 Power
Built single cylinder OHV vertical shaft air-cooled gasoline engine with
a rated power of 12.5 hp (9.3 kW), and Peerless 205-565 transmission
with 6 forward and 1 reverse gears. Max. forward speed - 4.7 mph (7.5
km/h), max. reverse speed - 1.4 mph (2.3 km/h).
The Husqvarna CT 126 was equipped with a manual steering system, disc
brakes, 13x5.00-6 front tires, and 16x6.50-8 rear tires. The wheel base
is 46.9 inches (1190 mm). The tractor is compatible with a 30" mid-mount
1-blade stamped mower deck with cutting height of 0.8-3.2 in (20-80 mm)
and electric blade engagement.
Engine Troubleshooting |
Engine hard to start or won't start |
Gas tank is empty - Fill gasoline up |
Low-quality gasoline - Change gasoline |
Air in the fuel lines - Bleed the fuel lines |
Spark plug wiring connection is damaged - Check the spark plug wire connection, repair or replace |
Spark plug is damaged - Change spark plug as required |
Plugged fuel filter - Fuel filter needs to be replaced |
Brake pedal not depressed - Press the brake pedal |
Problems with carburetor adjustment - Adjust as required |
Low cylinder compression - Check cylinder block and replace worn parts |
Throttle cable is adjusted incorrectly or damaged - Change cable or adjust correctly |
Cooling fins are plugged - Need to wash or clean |
Ignition failure - Test ignition and replace failed parts |
Faulty or stuck choke cable - Clean or change the cable |
Air filter is dirty - Change or clean air filter |
Dirty or damaged fuel pump - Clean or replace fuel pump |
Engine starts and stalls suddenly |
Spark plug is faulty - Spark plug need to be replaced |
Defective or dirty carburetor - Service or replace carburetor |
Defective ignition coil - Ignition coil must be replaced |
Broken or bad valve springs - New valve springs need to be installed |
Stuck valves - Clean the valves |
Insufficient engine oil - Check and refill engine oil |
Engine overload - Load reducing is recommended |
Plugged cooling fins - Wash or clean as required |
Carburetor mixture is too lean - Set the carburetor correctly |
Ignition timing is improper - Adjust ignition timing correctly |
Improper valve setting - Set the valves correctly |
Low octane fuel - Use proper gasoline |
Engine is under excessive load - Reduce the load |
Low engine oil level - Need to add engine oil |
Low idle speed setting is incorrect - Test and adjust |
Dirty or damaged fuel pump - Clean or install new fuel pump |
Main bearings or crankshaft wear - Crankshaft or bearings need to be replaced |
Improper valve clearance - Adjust valve clearance according to specifications |
Worn cylinder bore or piston rings - Replace faulty parts |
Improperly or clogged carburetor - Clean or properly adjust carburetor |
Air filter is blocked - Service or replace air filter |
Fuel pump is defective or dirty - Check fuel pump and change if required |
Ignition system malfunction - Inspect ignition system and change faulty parts |
Defective cylinder head gasket - Replace the gasket as required |
Valves are burned or stuck - Replace or service valves |
Push rod is bent or worn - Push rod needs to be changed |
Faulty cylinder block parts - Change defective components |
Choke did not open fully - Change or adjust choke cable |
Incorrect carburetor main jet adjustment - Adjust the carburetor main jet properly |
Spark plug is defective or loose - Tighten or change the spark plug |
Valves are worn, stuck, or burned - Change or clean valves |
Rings, sleeve, or piston are damaged - Replace faulty components |
Excessive valve clearance - Adjust to proper valve clearance |
Engine using too much oil |
Damaged gaskets or seals - Replace to repair leaks |
Valve stems and guides are worn - Valves must be replaced |
Stuck or defective piston rings - Install new piston rings |
Piston or cylinder liner is damaged - Inspect piston and liner, replace as required |
Plugged breather hose or pipe - Replace or service |
Transmission Troubleshooting |
Gear hard to shift |
Gear shift linkage is loose or broken - Service or change the shift linkage |
Shift forks are bent or worn out - Shift forks need to be changed |
Worn gear shift mechanism - Replace worn components |
Low transmission fluid level - Add fluid to the transmission housing |
Transmission oil contamination - Change the oil |
Gears are worn or bearings are damaged - Change gears or bearings |
Transmission jumps out of gear |
Shift lever is bent or installed incorrectly - Change or install shift lever properly |
Gear teeth are damaged or worn - Install new gears |
Shift forks or shift rods are worn - Change damaged forks or rods |
Improper drive shaft/belt adjustment or damaged drive shaft/belt - Replace belt/shaft or adjust it |
Clutch/brake is faulty or incorrectly adjusted - Adjust or replace clutch/brake |
Worn or defective drive pulley - Change pulley |
Mower Deck Troubleshooting |
Excessive mower vibration |
Dirty or worn mower drive sheave - Service or change sheave |
Drive belt is loose or defective - Adjust belt tension or change the belt |
Mower blades are unbalanced or bent - Balance or change blades |
Blade bolts are not tightened well - Bolts need to be tightened |
Discharge chute regular clogging |
High mowing speed - Select a slower speed |
Tall grass - Use a lower cutting height |
Reduced engine rpm - Open throttle fully |
Cutting level is too low - Use a higher cutting height |
Drive belt installed improperly - Check drive belt for correct installation |
Deck is plugged with grass - Mower deck needs to be cleaned |
Excessive blade dullness - Sharpen the blades |
Worn or defective blades - Change the blades |
Fast mowing speed - Operate at slower speed |
Mower deck set to low cutting - Must be set to high cutting height |
Full bagger - Remove grass from bagger |
Bumpy or not smooth lawn - Level the lawn |
Mower deck cutting height is set too low - Use a higher cutting height |
Ground speed is too fast - Select a slower speed |
Improper mower deck level - Level the deck properly |
Bent or worn blades - Blades need to be replaced |
Incorrect tire pressure - Inflate tires correctly |
Tire pressure is too low - Inflate tires as required |
Improperly leveled mower deck - Level the deck correctly |
Blades are too dull - Sharpen the blades |
Blades are worn or damaged - Blades must be changed |
Cutting deck is clogged - Clean out the mower deck |
Deck shell is broken - Rebuild or change mower deck |
Mower spindle is faulty or loose - Replace or repair the spindle |
Electrical Troubleshooting |
Battery cannot be charged |
Wiring connections are corroded or loose - Service or tighten connections |
Defective electrical terminal connectors - Change terminal connectors |
Defective battery - Install a new battery |
Low battery capacity - Low battery charging, charge as required |
Battery is not holding charge - Service charging system or install new battery |
Disconnected wiring or bad battery terminals - Check cable connections and change or clean terminals |
Battery is drained or worn - Replace or charge as required |
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly |
Low battery output voltage - Recharge the battery |
Spark plug worn or incorrectly gapped - Replace or clean and gap |
Damaged starter motor or solenoid - Change solenoid or repair starter |
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Lawn and Garden Tractors Technical Specs |