KTM 300 EXC TPI 2019 Repair Manual

ENGINE 18
267
18.6.22 Checking the X-distance
Info
The X-distance is the distance defined for the piston protrusion, when the cylinder is clamped down and
the piston is at top dead center.
The X-distance must be checked very carefully. If the X-distance is too large, the compression decreases
and the engine loses power. If the X-distance is too small, the engine knocks and overheats.
D04428-10
(All 250 models)
–
Apply special tool
1
to the cylinder.
Setting gauge (54829001100) ( p. 365)
– Position the piston at top dead center.
– Check the X-distance using the special tool.
Feeler gauge (59029041100) ( p. 369)
X distance (upper edge of
piston to upper edge of
cylinder)
0 … 0.10 mm (0 …
0.0039 in)
» If the specified value is not reached:
– Adjust the X-distance. ( p. 267)
D04429-10
(All 300 models)
–
Apply special tool
1
to the cylinder.
Setting gauge (54829001100) ( p. 365)
– Position the piston at top dead center.
– Check the X-distance using the special tool.
Feeler gauge (59029041100) ( p. 369)
X distance (upper edge of
piston to upper edge of
cylinder)
0 … 0.10 mm (0 …
0.0039 in)
» If the specified value is not reached:
– Adjust the X-distance. ( p. 267)
18.6.23 Adjusting the X-distance
Info
The X-distance is adjusted by inserting cylinder base gaskets of various thicknesses.
Preparatory work
– Check the X-distance. ( p. 267)

KTM 300 EXC TPI 2019 Specifications

General

Displacement	293.2 cm³
Bore x Stroke	72 mm x 72 mm
Starter	Electric starter
Transmission	6-speed
Cooling	Liquid cooled
Rear Suspension	WP XPLOR PDS shock absorber
Seat Height	960 mm
Ground Clearance	370 mm
Fuel Tank Capacity	9.5 liters
Engine Type	2-stroke
Fuel System	Transfer Port Injection (TPI)
Frame	Central double-cradle type 25CrMo4 steel
Front Suspension	WP Xplor 48
Front Brake	Disc brake
Rear Brake	Disc brake 220 mm