PROX Crankshaft Bearing and Seal Kit for YAMAHA YFS 200 1988-2004

The PROX 23.CBS22088 crankshaft bearing and seal kit is designed for YAMAHA YFS 200 from 1988 to 2004. The crankshaft bearings carry the engine's entire rotation. Over the hours they develop play: the crankshaft vibrates, wears its oil seals and can end up touching the crankcase. This kit brings together the crankshaft bearings and oil seals that are replaced together.

Specifications

• Brand: PROX
• Manufacturer part number: 23.CBS22088

When to replace it?

• Rumbling that changes with the revs, unusual vibration.
• Radial or side play in the crankshaft.
• Leak at the crankshaft oil seals.

Every time the connecting rod or crankshaft is replaced, and at the intervals in the service manual.

Fitting tips

1. Heat the crankcase halves (around 100 to 120 °C) to remove and fit the bearings without force; put the new bearings in the freezer to help them go in.
2. Never hit the outer race of a bearing mounted on the shaft, or the inner race of a bearing mounted in the crankcase.
3. Fit the oil seals perfectly square, with greased lips.
4. Close up with a complete engine gasket kit and check that the crankshaft turns freely.
5. Take the opportunity to check the gearbox bearings and refill with fresh oil.

Why PROX?

Founded in 1975 and based near Amsterdam, ProX specialises in engine and clutch wear parts for off-road bikes. The brand has most of its range made in Japan, by OEM suppliers, for quality on a par with the original parts.

Spare parts and items to plan

• Complete engine gasket kit : see the selection
• Gearbox bearings : see the selection
• Connecting rod kit : see the selection
• Gearbox oil : LIQUI MOLY 10W30 1 L · LIQUI MOLY 1 L

Frequently asked questions

Are the oil seals included?
Yes: the kit contains the crankshaft bearings and oil seals.

What should I replace at the same time?
The complete engine gasket kit and, if the engine has some hours on it, the connecting rod.

Compatibility

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

Fits:
YAMAHA YFS 200 2004
YAMAHA YFS 200 2003
YAMAHA YFS 200 2002
YAMAHA YFS 200 2001
YAMAHA YFS 200 2000
YAMAHA YFS 200 1999
YAMAHA YFS 200 1998
YAMAHA YFS 200 1997
YAMAHA YFS 200 1996
YAMAHA YFS 200 1995
YAMAHA YFS 200 1994
YAMAHA YFS 200 1993
YAMAHA YFS 200 1992
YAMAHA YFS 200 1991
YAMAHA YFS 200 1990
YAMAHA YFS 200 1989
YAMAHA YFS 200 1988