Suzuki DF200/DF225/DF250 V6 4-Stroke Outboards Service Manual, Page 220Get this manual
POWER UNIT
5Check that the match marks () pq on both the PORTSTBD side INcamshaft timing sprockets are correctly aligned with the match marks ho on the camshaft housing as shown in the illustration
6As shown in the illustration, fit the 1st timing chain with one blue link aligned with the match mark () on the PORT side INcamshaft timing sprocket and one blue link aligned with the match mark () on the STBD side INcamshaft timing sprocket7As shown in the illustration, fit the 1st timing chain with its yellow link aligned with the match mark () on the driven gear