English, 23 r – KTM 250 EXC RACING User Manual
Page 24
ENGLISH
23
R
ECOMMENDED INSPECTION OF THE
250/450/525 EXC
ENGINE
USED FOR HOBBY
-
ENDURO COMPETITIONS BY YOUR
KTM
WORKSHOP
(
ADDITIONAL ORDER FOR THE
KTM
WORKSHOP
)
a 100 liter fuel consumption is equivalent to approx. 15 operating hours
Check the clutch disks for wear
●
●
●
●
●
●
Check the length of the clutch springs
●
●
●
●
●
●
Check the cylinder and piston for wear
●
●
●
Check the groove on the piston pin retainer for wear (visual check)
●
●
●
Check the camshaft for wear (visual check)
●
●
●
Replace the camshaft bearings
●
●
●
Check the length of the valve springs
●
●
●
Check the spring cap for wear
●
●
●
Check the eccentricity of the valve disk
●
●
●
Check the valve guides for wear
●
●
●
Check the radial clearance of the rocker arm rollers
●
●
●
Check the elongation of the timing chain
●
●
●
Check the chain tensioner tooting for damage (visual check)
●
●
●
●
●
●
Check the eccentricity of the crankshaft journal
●
●
●
Replace the conrod bearings
●
●
●
Check piston pin bearing
●
●
●
Replace the balancer shaft bearings
●
●
●
Replace the crankshaft main bearings
●
●
●
Check the entire transmission including the roller and bearings for wear
●
●
●
Check the length of the bypass valve spring
●
●
●
60 hours
400 liter
90 hours
600 liter
120 hours
800 liter
180 hours
1200 liter
240 hours
1600 liter
270 hours
1800 liter
NOTE: IF THE INSPECTION ESTABLISHES THAT PERMISSIBLE TOLERANCES ARE EXCEEDED, THE RESPECTIVE COMPONENTS
MUST BE REPLACED.