MS 390

STIHL MS 390 Genuine OEM Parts

Keep a dependable work saw ready for the next job with genuine STIHL MS 390 parts selected for maintenance, repair, and restoration. The MS 390 is used for property work, cutting firewood, storm cleanup, and other demanding tasks. A saw can only work as intended when its service components are correctly selected. This collection gives you a practical place to search for replacement parts by OEM part number, component type, or the MS 390 application in a listing. Use it for routine service, fault tracing, or a rebuild.

Start With the Exact MS 390 Part Number

The most reliable way to select a replacement component is to compare the number in the catalog with the number from the removed part or illustrated parts list. Names alone can be misleading: a cover, fastener, fuel line, or linkage may look similar to another component but differ in size, routing, thread, or production version. Review the product title, OEM reference number, and listing details before placing an order. If an item supersedes an earlier part number, confirm that the replacement is specified for your MS 390 rather than assuming that a visually similar item will fit.

MS 390 Parts Available by System

Depending on current inventory, this collection may include individual genuine STIHL OEM components for the main systems of an MS 390 chainsaw, including:

• engine, cylinder, piston, crankshaft, and crankcase components;
• carburetor, intake, air-filter, fuel-tank, and fuel-line parts;
• starter assembly, recoil parts, ignition, wiring, and stop-switch components;
• clutch, chain sprocket, oil pump, worm gear, and bar-lubrication parts;
• chain-brake, hand-guard, handle, throttle-control, and AV-system pieces;
• covers, caps, screws, clips, springs, gaskets, seals, and other service hardware.

Plan Maintenance Before a Failure Stops Work

When the MS 390 begins to show hard starting, inconsistent idle, reduced oil delivery, excess vibration, a slipping clutch, or visible fuel leaks, stop using the saw until the condition has been evaluated. Do not diagnose a problem by replacing random parts. Confirm the symptom, inspect the related system, and use the correct OEM component for the repair. For engine, ignition, fuel-system, or safety-related work beyond your experience, have the machine inspected by a qualified small-engine technician.

Select Parts for Your Repair Scope

A focused repair starts with a clear goal. A routine service may call for filters, spark-related service items, fuel-system pieces, or fasteners. A cutting-system service may involve the clutch area, sprocket, oil-pump drive, chain brake, or related covers. A larger rebuild can require internal engine components, seals, gaskets, and mounting hardware. Read each product description to determine whether the listing is for one item, a component group, or an assembly. Photos are helpful for recognition, but the OEM part number and model application should make the final compatibility decision.

Confirm OEM References Before Checkout

Use the original STIHL part number whenever possible. Enter it in the search field without adding spaces or extra words, then compare the result with the product listing. If you only know the component name, narrow the search by the MS 390 model and system category. Do not order a part solely because it appears in a general chainsaw search. A few minutes spent matching the reference can prevent a return and keep your repair schedule on track.

Replace Safety Components With Care

Chain-brake, throttle-control, hand-guard, chain-catcher, and stop-switch components contribute directly to safe operation. Inspect their movement and condition before returning the chainsaw to service. Use only the correct parts for the application, follow STIHL service information, and test all safety functions with the engine off where applicable. If a safety component is damaged, missing, or does not operate normally after repair, do not use the saw until it has been corrected.

Get Help Identifying an MS 390 Part

If you cannot locate the component you need, send us the OEM part number, the chainsaw model, serial number, and a clear description of the part's location or function. Photos of the removed item and the area where it installs can also help identify the correct listing. We can help you narrow the search, but the final order should always be verified against the machine's serial range, illustrated parts information, and the product details shown on the page.

MS 390 Parts FAQ

Can I identify an MS 390 part from a photo?

A photo can help identify the system and general shape, but it should not be the only fitment check. Compare the OEM number, product details, and model application before ordering.

Why should I check the serial number?

Manufacturing updates can change a component or its reference number. The serial number helps confirm that the part applies to your specific MS 390 production version.

STIHL is a registered trademark of its respective owner. References to STIHL and MS 390 identify genuine branded parts and compatible equipment applications.