3512B Marine Engine S2K00001-UP(SEBP3915 - 36) - Documentation Página 1 de 2
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Product: MARINE ENGINE
Model: 3512B MARINE ENGINE S2K00321
Configuration: 3512B Marine Engine S2K00001-UP
Testing and Adjusting
3500B and 3500C Marine Engines
Media Number -RENR5078-10 Publication Date -01/03/2014 Date Updated -06/03/2014
i05207684
Crankshaft Position for Fuel Injector Adjustment and Valve
Lash Setting
SMCS - 1202
Note: The sequence for the injectors in 3508 Engines was last changed in December 2005. The
sequence for the injectors in 3516 Engines was last changed in December 2012. Articles
announcing the changes were published in Engine News and Service Magazine.
Table 1
Counterclockwise Rotation (Standard) from the Flywheel End of the Engine
Cylinders to Check/Adjust
Engine Correct Stroke For No. 1 Piston Inlet Valves Exhaust Valves
Injectors
At Top Center Position (1)
Compression 1-2-6-8 1-2-3-7 2-3-4-7
3508
Exhaust 3-4-5-7 4-5-6-8 1-5-6-8
1-3-6-7-10-12 2-4-5-8-9-11
Compression 1-4-5-6-9-12
3512
2-4-5-8-9-11 2-3-7-8-10-11 1-3-6-7-10-12
Exhaust
1-2-5-7-8-12- 1-2-3-4-5-6-8-9 3-4-6-9-10-5-
Compression
13-14 15-16
3516
3-4-6-9-10-11 7-10-11-12-13- 1-2-11-7-8-12-
Exhaust
-15-16 14-15-16 13-14
(1)
Put the No. 1 Piston at the top center (TC) position and identify the correct stroke. Refer to Testing and
Adjusting, "Finding the Top Center Position for the No 1 Piston". Find the top center position for a particular
stroke and make the adjustment for the correct cylinders. Remove the timing bolt. Turn the flywheel by 360
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3512B Marine Engine S2K00001-UP(SEBP3915 - 36) - Documentation Página 2 de 2
degrees in the direction of normal engine rotation. Turning the flywheel will put the No. 1 piston at the top center
(TC) position on the other stroke. Install the timing bolt in the flywheel and complete the adjustments for the
cylinders that remain.
Table 2
Clockwise Rotation (Reverse) from the Flywheel End of the Engine
Cylinders To Check/Adjust
Engine Correct Stroke For No. 1 Piston Exhaust Valves
Inlet Valves Injectors
At Top Center Position (1)
Compression 1-3-4-8 1-2-7-8 2-6-7-8
3508
Exhaust 2-5-6-7 3-4-5-6 1-3-4-5
1-3-4-6-7-12 2-5-8-9-10-11
Compression 1-4-5-8-9-12
3512
2-5-8-9-10-11 2-3-6-7-10-11 1-3-4-6-7-12
Exhaust
1-2-5-6-7-8- 1-2-3-4-5-6-9- 3-4-9-10-5-12-
Compression
13-14 10 15-16
3516
Exhaust 3-4-9-10-11- 7-8-11-12-13- 1-2-11-6-7-8-
12-15-16 14-15-16 13-14
(1)
Put the No. 1 Piston at the top center (TC) position and identify the correct stroke. Refer to Testing and
Adjusting, "Finding the Top Center Position for the No 1 Piston". Find the top center position for a particular
stroke and make the adjustment for the correct cylinders. Remove the timing bolt. Turn the flywheel by 360
degrees in the direction of normal engine rotation. Turning the flywheel will put the No. 1 piston at the top center
(TC) position on the other stroke. Install the timing bolt in the flywheel and complete the adjustments for the
cylinders that remain.
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