KTM 125 Repair Manual

5-13C
Reed valve housing, intake flange
NOTE: The reed paddles 1 slowly lose their tension during operation,
thus reducing the overall performance. Damaged or worn reed paddles
must therefore be replaced.
The entire reed valve housing must be exchanged if the sealing surfaces
of the reed valve housing
2 are also damaged.
! CAUTION !
W
HEN MOUNTING THE REED VALVE HOUSING BE SURE TO APPLY LOCTITE 243 TO
ALL BOLTS
.
Velocity insert
3
Check for tight fit and damage.
Intake flange
4
Check for cracks and other damage.
NOTE: Model 2000 onwards velocity insert
3 and wing 5 is only
available as one part.
– Measure distance
M between the stop plates with a sliding gauge.
Distance
M = 28 mm (1.1 in)
M
LOCTITE 243
LOCTITE 243
1
1
2
3
4
5

KTM 125 Specifications

General

Bore x Stroke	54 mm x 54.5 mm
Starter	Kickstarter
Transmission	6-speed
Engine Type	Single-cylinder, 2-stroke
Displacement	124.8 cm³
Cooling System	Liquid cooled
Fuel System	Carburetor
Lubrication	Premix (oil-fuel mixture)