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Maintenance intervals and scheduled times for propeller, nut, cotter pin, anodes and bolts can be found in the maintenance chart section of your Service Manual.

Propeller nut and cotter pin

• Inspect the propeller for bent, chipped or broken blades. If damage noticeably affects operation, replace.
• Make sure that the propeller nut is tightened.
• Make sure that the cotter pin is installed securely.


If 2/3 of the anode has corroded away, replace the anode.

CAUTION: Do not paint the anode.

NOTE: Apply the Silicone Seal to the anode securing bolts.

Special materials required: See special materials required for more information.


Check that all bolts and nuts listed below are tightened to the each specified torque.


For factory specified torque specifications for the following bolts and nuts see tighten torque spec's in your manual.

Cylinder head cover bolt
Cylinder head bolt
Flywheel nut
Power unit mounting bolt
Clamp bracket shaft nut
Gearcase bolt / nut


Suzuki Models / Horsepower / Model Years

DF4 DF4 DF6 DF9.9 DF15 DF25 DF30 DF40 DF50 DF50 DF40QH DF50QH DF40T DF50T DF40Y DF50Y DF70 DF80 DF90 DF100 DF115 DF175 QH T Y 4HP 5HP 6HP 9.9HP 15HP 25HP 30HP 40HP 50HP 60HP 70HP 90HP 115HP 140HP 150HP 175HP 4 5 6 9.9 15 25 30 40 50 60 70 90 100 115 140 150 175 HP 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 99 00 01 02 03 04 05 06 07 08 09 10 11 Service Manual Repair Owner's Guide Diy Boat Engine Four Stroke 4-Stroke How To Fix.