Generic TR 125 Service Manual page 161

e) Determine whether the cylinder is submerged
• Fully open throttle, connected to the starter, after a few seconds, the engine should begin
If so:
to work
f) Whether the crankshaft position sensor clearance is too large
16.4.3.3 Fault phenomenon - unable to start and accompanied by a tempering
a) Check whether high-voltage lines of the ignition coil high-voltage are tightened
b) Whether the timing gear ring is loose.
16.4.3.4 Fault phenomenon - unstable idle
Idle speed control
Check whether idle speed bypass bolt of the is screwed too tight or loose, usually 2 laps
system:
Fuel supply
Whether there is leakage for tubing pipe.
system:
16.4.3.5 Fault phenomenon—the idle is too high or too low (idle speed does not
match obviously)
Idle speed
is too high: accelerate the warm-up process, which is a normal phenomenon. Except for that, make
inspection according to the following steps
Idle speed
is too low:
16.4.3.6 Fault phenomenon—instable idle speed with deceleration flameout
a) Check the valve clearance
b) Check whether the idle bypass holes and throttle body are too dirty
16.4.3.7 Fault phenomenon—inability to accelerate
a) Whether the parameters are normal during Idle and high idle;
b) Check the fuel tank, fuel filter;
When the water temperature is below 68 degrees, the system will increase the idle to
Check whether the idle bypass holes are too big
Valve clearance, especially whether the exhaust valve clearance is too large
Check the fuel tank, fuel filter, oil pressure and nozzle
Check whether the idle bypass holes are too small
Check the valve clearance, whether the clearance is too small
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