Baja WD250U, Service Manual

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b. Make the mark “T” on the rotor align with the
mark on the crankcase. When aligned the piston
ties in Top Dead Center (TDC)
c. Inspection of top dead center in pressure stroke:
(i) When the mark (1) on the rotor is align with
mark (2) on the crankcase, the two arms must be
clear.
(ii) If there is no clearance, turn the crankcase
counterclockwise to meet the above requirement.
d. Measure the valve clearance (3) with a plug
gauge. Adjust the clearance if it is out of specifica -
tion.
Intake valve clearance: 0.05-0.09mm (normal
temp.)
Exhaust valve clearancee: 0.11-0.15mm (normal
temp.)
(2) Adjustment of valve clearance:
a. Loosen lock nut (1)
b. Insert the plug gauge spanner (2) between
adjusting screw (3) and valve rod.
c. Turn the adjusting screw 3 clockwise with
valve adjusting spanner until the right clearance
has been met.
Size of valve adjusting spanner: 3mm
Code: 90890-01311
d. Fix the adjusting screw (3) to avoid turning,
and fasten the lock nut (1) .
Torque of lock nut: 14N ·m
3. Adjust the valve clearance again: If the clearance
is not correct adjust it again by using the above
procedures.
1
2
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