HOT RODS Crankshaft Bearing & Oil Seal Kit for YAMAHA YFM 660 GRIZZLY 4WD, YFM 660 RAPTOR 2WD, YXR 660 RHINO 4WD 2001-2008

HOT RODS offers this engine bearing and seal kit for YAMAHA YFM 660 GRIZZLY 4WD, YFM 660 RAPTOR 2WD, YXR 660 RHINO 4WD 2001-2008. The crankshaft and gearbox shafts spin on bearings in the cases; oil seals keep the oil in around the shafts.

What is this bearing made of?

Races and balls (or rollers) in hardened chrome steel, 100Cr6 type: a very hard steel that withstands the fatigue of millions of engine revolutions.

• Open bearing: unsealed, it is lubricated and cooled by the engine oil; clean oil is its best protection.
• C3 / C4 internal clearance: slightly more clearance than normal for a hot engine’s expansion; always refit the original clearance.
• Limit: it dislikes dust and old oil; running short of oil destroys it within minutes.

Why choose HOT RODS?

Hot Rods, the bottom-end specialist since 1993: crankshafts, rods, bearings and seals for a complete rebuild.

When should you replace the bearings on your YAMAHA YFM 660 GRIZZLY 4WD?

Unusual vibration, a deep knock that follows engine speed or play in the con-rod: the bottom end needs a rebuild.

The manufacturer publishes no hour interval for this model: have the con-rod play checked at every piston change. Cross-Mania guideline: rebuild the bottom end every 2 to 3 top-end rebuilds.

Specifications and fitting tips

• Manufacturer part number: K240

Cross-Mania tip: Heat the cases to remove and fit the bearings without forcing them, and replace the oil seals at the same time.

Also needed with this part

• Complete engine gasket kit : see the selection
• Piston : see the selection
• 2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
YAMAHA YFM 660 GRIZZLY 4WD 2008
YAMAHA YFM 660 GRIZZLY 4WD 2007
YAMAHA YFM 660 GRIZZLY 4WD 2006
YAMAHA YFM 660 GRIZZLY 4WD 2005
YAMAHA YFM 660 GRIZZLY 4WD 2004
YAMAHA YFM 660 GRIZZLY 4WD 2003
YAMAHA YFM 660 GRIZZLY 4WD 2002
YAMAHA YFM 660 RAPTOR 2WD 2005
YAMAHA YFM 660 RAPTOR 2WD 2004
YAMAHA YFM 660 RAPTOR 2WD 2003
YAMAHA YFM 660 RAPTOR 2WD 2002
YAMAHA YFM 660 RAPTOR 2WD 2001
YAMAHA YXR 660 RHINO 4WD 2007
YAMAHA YXR 660 RHINO 4WD 2006
YAMAHA YXR 660 RHINO 4WD 2005
YAMAHA YXR 660 RHINO 4WD 2004