STIHL FG 4 Roller Filing Guide for 3/8" Chain, 5.2 mm

Your chain isn’t cutting like it used to, but you don’t want to waste time or links. The STIHL FG 4 Roller Filing Guide lets you sharpen accurately and with light pressure, so you restore cutting performance without guesswork.

Designed for routine, precise touch-ups, it guides the file cleanly and includes a depth gauge plate to set raker height correctly after sharpening. Compact, robust, and made for pros who value consistency.

Where it excels

• Weekly precision sharpening of 3/8" chains on-site or in the workshop
• Quick maintenance between cuts to keep productivity up
• Setting depth gauges accurately after filing the cutters
• Consistent, repeatable results across multiple chains

Why users like it

• Smooth guidance: roller support helps file evenly with minimal force
• Built-in accuracy: depth gauge plate for correct raker setting
• Compact control: easy to carry and handle
• Purpose-built: made for regular chain maintenance

Handling insights

The roller support keeps the file stable so you maintain angle and pressure without overcutting. After sharpening, use the integrated plate to adjust depth gauges for balanced bite and smoother cutting.

Capacity and specs

• For 3/8" chains, Ø 5.2 mm
• Available diameters: 5.2 / 4.8 / 4.0 mm
• Without file
• Built-in plate to set depth gauge distance

Advice from gardenmachineshop.com

Mark your starting cutter and count strokes per tooth—match the same number on every cutter for an even, straight cut.

Returns: as a consumer you can withdraw from your purchase within 14 days of receiving it, without giving a reason – this also applies to parts we order in specially for you. See our Refund & return policy for how to return an item and who pays the return shipping.