Crankshaft Assembly for Sea-Doo SPX 720 1996

Crankshaft Assembly for Sea-Doo

This crankshaft assembly is a rebuilt or replacement crankshaft for the Sea-Doo SPX 720, converting the up and down motion of the pistons into the rotating drive that powers the jet pump.

Overview

This crankshaft assembly serves the Sea-Doo SPX 720 engine as the central rotating component that ties the connecting rods to the crankcase. It transfers piston motion into rotation and drives the PTO end that spins the jet pump. It suits riders and mechanics rebuilding the bottom end of a Sea-Doo SPX 720 who need a sound crankshaft assembly in place of a worn or seized unit.

Built For Performance

• Assembled crankshaft with rods and bearings ready for installation
• Balanced rotating assembly for smooth operation at high rpm
• PTO taper end to mount the drive coupler on the SPX 720
• Steel journals machined to the specifications for Sea-Doo 720 engines
• Sealed bearing surfaces to suit the crankcase lubrication of the 720 two-stroke

Fits These Machines

• for Sea-Doo SPX 720

On-The-Job Use

• Bottom-end rebuilds on the Sea-Doo SPX 720 engine
• Replacement of a seized or out-of-tolerance crankshaft
• Crankcase service where the crank is removed for inspection
• Jet pump drive repairs that require the crankshaft out of the case

Specs At A Glance

Good To Know

Q: Does this crankshaft assembly come with the connecting rods? A: A crankshaft assembly normally arrives built up with rods and bearings already fitted. Confirm the exact contents of the listing if the rod condition matters to your rebuild.

Q: Can I install the crankshaft without a press or alignment tools? A: Installing a crankshaft requires dial indicator checks and careful case assembly, so a service manual and proper tooling are recommended. Skipping alignment can cause premature bearing failure.

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