420241221 Power Valve Cover Screw Adjustment for Sea-Doo Sportster LE 951

Power Valve Cover Screw Adjustment for Sea-Doo

This power valve cover screw adjustment, part number 420241221, is a replacement component that lets you tune the exhaust power valve on Sea-Doo 951 engines for proper opening and closing.

Overview

This power valve cover screw adjustment is designed for the exhaust power valve system on Sea-Doo 951 watercraft. It provides the threaded adjustment point used to set when the power valve opens. This power valve cover screw adjustment is a practical replacement for riders servicing a 951 engine.

Built For Performance

• Adjustment screw allows precise power valve setting
• Cover mount matches the factory 951 valve area
• Built to withstand exhaust heat and vibration
• Threaded design permits repeatable tuning changes
• Direct replacement for a worn or stripped original

Fits These Machines

• for Sea-Doo Sportster LE with 951 engine (2000-2003)
• for Sea-Doo 951 equipped watercraft using the power valve cover screw adjustment

On-The-Job Use

• Replacing a stripped or seized power valve adjustment screw
• Rebuilding the exhaust power valve assembly on a 951 engine
• Restoring correct power valve opening during a tune-up
• Servicing watercraft used for recreation and towing

Specs At A Glance

Good To Know

Q: What does the power valve cover screw adjustment do? A: It sets when and how far the exhaust power valve opens, which affects low-end response and top-end power on a 951 engine.

Q: Do I need to reset the adjustment after installing it? A: Yes, the screw should be set to the factory specification and checked against engine behavior after installation.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.