Bearings kit and seals Sachs 504 / 505 2-speed

Bearing and oil seal kit for Sachs 504 / 505 2-speed engines, designed to renew the lower end of the engine when play, noise, or sealing issues appear.

When you open an engine for a rebuild, the crankshaft bearings and oil seals are two of the parts that make the most sense to replace. If the bearings have play or rotate roughly, the crankshaft no longer runs properly centered; and if the oil seals are hard or worn, leaks or air ingress may appear, greatly complicating carburetion.

This kit includes 2 NTN 6202 C3 bearings. The C3 tolerance provides greater internal clearance than a standard bearing, a common feature in engines where there is heat, expansion, and high rotational speed.

The kit includes:

• 2 x NTN 6202 C3.
• 1 x 15x30x6 mm oil seal.
• 1 x 15x35x7 mm oil seal.

When is it worth replacing?

• If you notice play in the crankshaft.
• If bearing noise appears.
• If the engine has sealing issues or air ingress.
• If you are carrying out a complete engine rebuild.
• If you are going to install a new crankshaft and want to have the lower end done all at once.