YS Engine YSS1017 Replacement O-Ring Kit for Back Plate Seals  [YSS1017]

YS ENGINE BACK PLATE O-RING 50ST #S1017
Price:
NZD$8.47
Brand:
YS Engine
Model:
YSS1017
GTIN:
4560105739695
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O-ring seals for back plate

The YS Engine YSS1017 back plate O-rings serve as service seals for YS engine back plate joints on RC models. They are supplied for periodic replacement where sealing surfaces show wear and should be treated as consumable items during engine maintenance.

To fit, remove the back plate and check the sealing groove for foreign material or damage. Replace the old O-ring with a correctly sized ring from the pack and reassemble, making sure the faces are clean and seated squarely. Use the lubricant recommended by your engine manual to aid installation and reduce tearing risk.

Replacing aged O-rings is a simple step that helps maintain crankcase pressure and reduces the chance of fuel or oil seepage that can upset engine performance.

How do I check if the ring size matches my back plate groove?

Measure the groove diameter and cross section on your back plate and compare with the O-ring dimensions before fitting. If the ring appears loose or overly stretched it may not provide a reliable seal.

Are these rings suitable for repeated removals during tuning?

Nitrile O-rings can handle multiple installations, but repeated removal increases the chance of nicks or permanent deformation. Replace rings that show surface damage to protect sealing integrity.

Should I apply lubricant before seating the O-ring?

Yes. A thin smear of a lubricant compatible with nitrile and your engine fluids will help the ring slide into the groove and lower the risk of pinching or tearing during assembly.

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