YS Engine YSF9166 Regulator Body Replacement for F91AC  [YSF9166]

YS ENGINE REGULATOR BODY F91AC #F9166
Price:
£11.17
Brand:
YS Engine
Model:
YSF9166
Condition:
Brand New
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Product Notes for YS F91AC Regulator Body

The regulator body is offered as a direct replacement for the YS F91AC regulator assembly in RC glow engines. It provides the housing for regulator components and is intended to restore correct fit and alignment in the regulator assembly.

Installation should be carried out in a controlled workspace: remove the regulator assembly, swap in the new body while retaining original seals and fixings if suitable, and verify sealing and alignment before using fuel. Avoid makeshift fixes or using the part on non-model engines.

Designed for service and repair rather than as a tuning item, the YSF9166 is useful to return a damaged regulator assembly to service or to keep as a spare for event readiness.

How can I confirm this is the correct part for my engine?

Verify your engine model is F91AC and that the replacement carries the YSF9166 identifier; compare the new component with the removed body for matching mounting points.

Is additional mounting hardware included or needed?

Many listings supply the body only. It is common to reuse original screws and seals if they are in good condition, otherwise source correct replacements.

What is the recommended method to check for leaks after fitting?

After fitting tighten fasteners progressively to ensure even seating, run a controlled fuel test and inspect joints for seepage, then perform a low-power bench run before full use.

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