Machine Library / Stihl / Stihl FS 38

Stihl Brushcutter

Stihl FS 38

A light grass trimmer commonly used around edges, fences and small yards.

Overview

About the Stihl FS 38

The Stihl FS 38 is a common residential line trimmer. It usually needs service attention when it becomes hard to start, will not idle, has poor throttle response or has a worn trimmer head. Fresh two-stroke fuel, clean filters and good fuel lines are key to keeping it reliable.

Common Problems

Faults We Commonly Check

  • Won’t idle
  • Bogging under throttle
  • Fuel line cracking
  • Head feed problems
  • Hard starting after storage

Maintenance

Suggested Maintenance Schedule

Every use Check line head, guard and fuel freshness.
Every 3 months Clean filter and inspect fuel lines.
Every 6–12 months Full trimmer service with plug, filter and carburettor check.
Before storage Drain old fuel or run fresh mix before storage.

Use this as general guidance only. Always follow the manufacturer’s owner manual for exact service requirements, oil type, fuel mix and safety instructions.

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