Sierra 18-51001 Recoil Starter Spring, Replaces 63V-15713-00-00, Fits 9.9-20 HP Outboards

The Sierra 18-51001 is a recoil starter rewind spring for outboard motors, designed to restore proper tension to the manual pull-start mechanism when the original spring has weakened, broken, or lost its recoil action. This spring fits into the recoil starter housing and provides the return force that retracts the starter rope after each pull, allowing the engine to be hand-started reliably.

As a direct-fit replacement, the 18-51001 is built to the same specifications as the original equipment spring it replaces, so it installs into the existing recoil starter assembly without modification. It is a compact, coiled component measuring 0.39 x 0.39 x 0.39 inches, sized to seat correctly in the recoil housings of the outboard models listed below. Replacing a fatigued recoil spring restores easy, consistent starter rope retraction and pull-start performance without the cost of a full recoil starter assembly.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-51001
• Category: Engine Parts
• Included Components: Rewind Spring (1)
• Unit Count: 1
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.3 pounds
• UPC: 808282342197

Fitment

• 9.9 (1996-09)
• 15 (1996-09)
• F6 (2001-08)
• F8 (2001-14)
• F9.9 (2005-14)
• F15 (1998-14)
• F20 (2006-14)
• T8 (2002-10)
• T9.9 (2007-14)

Replaces (OEM)

• 63V-15713-00-00

Frequently Asked Questions

What does the Sierra 18-51001 spring fit? The Sierra 18-51001 recoil starter spring fits outboard models 9.9 (1996-09), 15 (1996-09), F6 (2001-08), F8 (2001-14), F9.9 (2005-14), F15 (1998-14), F20 (2006-14), T8 (2002-10), and T9.9 (2007-14).

What OEM part number does 18-51001 replace? It replaces OEM part number 63V-15713-00-00, so it can be ordered as a direct equivalent for that original recoil starter spring.

Is the 18-51001 spring a direct fit or does it require modification? No modification is needed. The Sierra 18-51001 is sized and shaped to install directly into the recoil starter housing of the outboard models it fits.

What are the dimensions of this recoil starter spring? The 18-51001 spring measures 0.39 x 0.39 x 0.39 inches and weighs 0.3 pounds.

How many springs come in the package? Each package of the Sierra 18-51001 includes one rewind spring, sold as a single unit.

When should a recoil starter spring like the 18-51001 be replaced? Replace it when the pull-start rope no longer retracts on its own, feels loose, or the recoil mechanism has lost tension or broken, which points to a worn or snapped spring inside the starter housing.

Does replacing the spring require a full recoil starter assembly? No. The 18-51001 lets you replace just the internal rewind spring rather than purchasing an entire recoil starter assembly, as long as the rest of the housing and mechanism are in good condition.

Will 18-51001 fit outboards not listed in the fitment range? This spring is confirmed to fit the specific models and year ranges listed, including 9.9, 15, F6, F8, F9.9, F15, F20, T8, and T9.9; fitment outside that listed range is not confirmed.

Is this a genuine Sierra part or an aftermarket copy? The 18-51001 is a Sierra-branded recoil starter spring manufactured to replace OEM part 63V-15713-00-00.

What is the UPC for the Sierra 18-51001 spring? The Sierra 18-51001 recoil starter spring carries UPC 808282342197.