21
2011 PRODUCT IMPROVEMENTS
Powerhead Change 200 – 300 HP 90° V6 Models
The following changes have been made to improve powerhead durability:
• Piston splash port and dome have been redesigned to improve durability of
the piston.
• Piston ring locating pins have been changed to reduce locating pin migration.
• Cylinder sleeve oil grooves redesigned to provide consistent oil flow to piston
skirt.
L2-Type Gearcase (0.58 Ratio) Replaced by M2-Type
Gearcase (0.54 Ratio) on 225 – 300 HP 90° Models
The L2-Type gearcase (with 0.58 gear ratio) has been replaced by the M2-Type
gearcase (with
0.54 gear ratio) on all 225 – 300 HP models.
The larger gear set used in the M2-Type gearcase improves durability. Front
water inlets provide additional cooling water for the powerhead and can boost
water pressure in excess of 40 psi (275 kPa).
Also see Exhaust Housing to Gearcase Alignment Pins on p. 38.
Additional benefits of the M2-Type gearcase:
• Improved acceleration due to (.542) (1.85:1) gear ratio.
• Front and side water inlets.
• Wider propeller selection available to optimize performance.
M2-Type Gearcase
1. Front water inlet
2. Side water inlet
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