Back Plate Screw YSF9153 for YS F91AC - YS Engine  [YSF9153]

YS ENGINE BACK PLATE SCREW F91AC #F9153
Price:
AUD$6.37
Brand:
YS Engine
Model:
YSF9153
Condition:
Brand New
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Back plate fastener — F91AC

This YS Engine YSF9153 back plate screw is a hobby replacement intended for the YS F91AC engine back plate. It secures the engine rear cover and related components and is sold as an aftermarket spare for model use.

Use this fastener when the factory screw is lost, worn, or damaged. Install carefully with correct seating and controlled torque to avoid harming threads or the mating surfaces of the engine housing.

In maintenance and tuning the screw keeps the back plate aligned so internal adjustments and port timing remain consistent. Regular post-run checks are recommended to verify the screw remains tight and thread engagement is sound.

How often should I check this screw?

Inspect the fastener after each run session or following any heavy use; ensure torque remains correct and there is no visible thread wear.

Is the screw material specified?

Material details may not be listed on every vendor page; check the product listing or ask the supplier for metal grade information if material properties are critical.

What precautions help avoid stripping?

Hand-start the screw and use the correct driver size, apply steady pressure and avoid overtightening to reduce the risk of stripped threads.

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