4. Maintenance
USE AND MAINTENANCE MANUAL
CHAPTER 4
MAINTENANCE
4-Strokes - Edition 00 / 2022
137
4
1
2
3
4
5
6 12 13 14 15 16
A
4.16 CHAIN, CROWN AND SPROCKET
Chain check
– Measure the length of 15 joints “A” of the transmission
chain, if the length “A” is longer than the service limit,
replace the chain.
While measuring the drive chain length, push down
on the drive chain to increase its tension.
Measure the length between drive chain roller “1”
and “16” as shown.
Perform this measurement at two or three different
places.
Service limit (XEF 250 / XEF 450 versions):
239.3 mm (9.42 in)
Service limit (XXF 250 / XXF 450 versions):
242.9 mm (9.56 in)
Pinion and crown check
– Check the pinion and crown teeth. If they are damaged
and/or excessively worn, replace them.
Always replace chain, rim and pinion all together.
This will ensure uniform wear of the components and
a longer service life of the components.
4.15 TYRES
– Check the tire while it is cold;
Model/version
Front tyre
standard pressure
Rear tyre
standard pressure
XXF 250
100 kPa (1.00 kgf/cm
2
, 15 psi)
100 kPa (1.00 kgf/cm
2
, 15 psi)
XEF 250 with race use configuration
100 kPa (1.00 kgf/cm
2
, 15 psi)
100 kPa (1.00 kgf/cm
2
, 15 psi)
XEF 250 with road use configuration
200 kPa (2.00 kgf/cm
2
, 29 psi)
220 kPa (2.20 kgf/cm
2
, 32 psi)
XXF 450
100 kPa (1.00 kgf/cm
2
, 15 psi)
100 kPa (1.00 kgf/cm
2
, 15 psi)
XEF 450 with race use configuration
100 kPa (1.00 kgf/cm
2
, 15 psi)
100 kPa (1.00 kgf/cm
2
, 15 psi)
XEF 250 with road use configuration
200 kPa (2.00 kgf/cm
2
, 29 psi)
220 kPa (2.20 kgf/cm
2
, 32 psi)
– Loose bead stoppers allow the tire to slip off its position on the rim when the tire pressure is low;
– A tilted tire valve stem indicates that the tire slips off its position on the rim;
– If the tire valve stem is found tilted, the tire is considered to be slipping off its position. Correct the tire position.
