19 Troubleshooting - Husqvarna TC 85 2023 Owner's Manual

19 TROUBLESHOOTING

Faults
Engine turns but does not start
The engine has no idle speed
Engine does not speed up
Engine has too little power
114
Possible cause
Operating error
Motorcycle was out of use for
a long time and there is old
fuel in the float chamber
Fuel supply interrupted
Spark plug sooty or wet
Plug gap of spark plug too
wide
Fault in ignition system
Short-circuit cable in wiring
harness frayed, stop button
faulty
Water in carburetor or jets
blocked
Idling jet blocked
Adjusting screws on carbure-
tor distorted
Spark plug defective
Ignition system defective
Carburetor running over
because float needle dirty or
worn
Loose carburetor jets
Fault in ignition system
Fuel supply interrupted
Air filter is very dirty
Exhaust system leaks,
deformed or too little glass
fiber yarn filling in main
silencer
Fault in ignition system
Action
–
Carry out the start procedure.
( p. 27)
–
Empty the carburetor float cham-
ber. ( p. 104)
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/adjust the carburetor compo-
nents.
–
Clean and dry the spark plug and
spark plug connector, or change if
necessary.
–
Adjust plug gap.
Guideline
Spark plug electrode gap
0.60 mm (0.0236 in)
–
Check the ignition system.
–
Adjust the ignition system.
–
Check the stop button.
–
Check/set the carburetor compo-
nents.
–
Check/set the carburetor compo-
nents.
– Carburetor – adjust the idle speed.
( p. 103)
–
Change the spark plug.
–
Check the ignition coil.
–
Check the spark plug connector.
–
Check/set the carburetor compo-
nents.
–
Check/set the carburetor compo-
nents.
–
Check the ignition system.
–
Adjust the ignition system.
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/adjust the carburetor compo-
nents.
–
Clean the air filter and air filter box.
( p. 58)
–
Check exhaust system for damage.
–
Change the glass fiber yarn filling of
the main silencer. ( p. 60)
–
Check the ignition system.
–
Adjust the ignition system.