TM RACING 2012 TM 100 MX, User And Maintenance Manual

Page: 69 / 84

ENGLISH
ENGLISH
69
TROUBLESHOOTING
If you have the envisioned maintenance operations carried out on your motorcycle, you will have very few problems. If, however, a
problem does occur, please look for it in the following table and try to solve it. Please note that a lot of the operations cannot be carried
out without the help of technicians . If in doubt, please contact an authorised TM dealer.
TROUBLESHOOTING
CAUSE SOLUTION PROBLEM
The motorcycle hasn’t been used for a while, therefo -
re the old fuel has remained in thecarburetor bowl
Fuel supply interrupted
Engine flooded
Spark plug blackened or wet
Incorrect spark plug electrodes gap
Spark plug cover or spark plug damaged
Oxidised CDI unit, pickup orcoil connectors
Water in the carburetor or clogged jets
The volatile fuel components evaporate easily. If the motorcycle
has not been used for more than 1 week, the old fuel should
be emptied from the carburetor bowl. When the bowl has been
filled with fresh fuel, the engine will start immediately.
Disconnect the fuel hose from the carburetor, place it in a con -
tainer and open the fuel tap,
- if fuel escapes, clean the carburetor
- if fuel does not escape, control the tank vent pipe or clean the
fuel tap
Use the “by-pass” command as explained in the “Operating controls” chapter.
Clean and dry the spark plug or replace it.
Adjust the gap between the electrodes as shown in the tables
Slide off the spark plug cover, unscrew the spark plug, put the
cover back onto the spark plug and, gripping the cover, keep
the threaded part of the spark plug in contact with the head of
the engine.
Turn the engine with the electric starter or pedal, a spark should
appear between the electrodes of the spark plug
- if the spark plug does not produce a spark, it must be repla
-
ced
- if there is still no spark, remove the spark plug cover from the
H.T. cable coming from the coil, hold it at a distance of about
5 mm from the head and operate the starting system
- if there is a spark, replace the spark plug cover
- if there is still no spark, check the ignition system
Remove the saddle, the left side panel and the fuel tank, clean
the connectors and treat them with a contact spray.
Disassemble and clean the carburetor
THE ENGINE
DOES NOT START