Suzuki outboard motors 1988 2003 repair manual., Page 41Get this manual
MAINTENANCE 3-25 Dynamic adjustment
Before this adjustment, start the engine and warm it up for about minutesBefore starting this adjustment, be sure to remove the throttle rod (11)FULL ADVANCED IGNITION TIMING ADJUSTMENT
See accompanying illustrations
1Shift the clutch to forward2To check the full-advanced ignition timing, keep the engine running at 1,000 rpm and move the throttle limiter (1) to the full advanced position (W)1
This procedure is required to check the ignition timing while the engine is running at 5,000 rpm, but this method is very dangerous and here is an alternative method in which the ignition timing is advanced by hand with the engine running less than 1,000 rpm 3Keep the throttle limiter (1) in this position4Check that the timing plate points to 18.5OBTDC, using timing light
FULL RETARDED IGNITION ADJUSTMENT 1Shift the clutch to Neutral and keep the engine speed at 1,000 rpm2lanition timina is indicated bv the tirnina arrow attached on the side of the recoil starter pointing at any of the lines eiraved on the outer surface of the flywheel3Using timing light, make sure the timing arrow remains within range of 2Oplus or minus l0ATDC at 1,000 rpmIf not, the ignition timing must be readjusted4To retard the timing, loosen the lock nut and turn the adjusting screw counterclockwiseTo advance the timing, turn the adjusting screw clockwise5After the timing has been adjusted correctly, tighten the lock nutIDLE SPEED