Suzuki DF 25 Service Manual page 129

7-12 POWER UNIT
3. Turn the crankshaft in its normal running direction (R direc-
tion) until No.1 cylinder reaches top dead center.
NOTE:
To bring No.1 cylinder top dead center, align mark S on the
crankshaft with mark a on the crank case.
NOTE:
After timing chain has been removed, do not turn crankshaft or
camshaft.
4. Remove the bolts 4 and tensioner adjuster 5 .
5. Remove the bolt 6 and timing chain tensioner 7 .
6. Remove the bolts 8 and timing chain guide 9 .
7. Remove the three (3) bolts 0 securing the timing sprocket
to camshaft.
Remove the timing sprocket A , dowel pin B and timing chain
C.
a: Match mark on crankcase
S: Match mark on crankshaft
R: Engine normal running direction