Skip to content
4TH OF JULY SALE: Save Up to 40% for Americas 250th Shop Now >
Northern Tool Equipment Logo TextNorthern Tool Equipment Logo text link to Home.
Print

Stihl KombiMotor Gas-Powered Powerhead, 1.27 HP, 28.4cc, Model# KM 91 R

Item# 63938
60 of 388 reviewers received a sample product or took part in a promotion
Stihl KombiMotor Gas-Powered Powerhead, 1.27 HP, 28.4cc, Model# KM 91 R

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Stihl KombiMotor Gas-Powered Powerhead, 1.27 HP, 28.4cc, Model# KM 91 R

Click or Tap image to Zoom

$429.99

  • Shipping: 

    Not available

  • In Store Only: 

    Sold only in stores - 5 in stock at Fredericksburg VA

  • Simplified starting with semi-automatic choke lever and one-touch stop
  • Low emission STIHL engine delivers dependable power and fuel efficiency with 30% longer run times than previous models
  • Easy2Start? technology gets the 28.4cc engine running quickly and easily with just a gentle pull
  • Split-boom multi-tool shaft with quick-release coupling system provides quick and easy attachment changes
  • Powers up to 14 different KombiSystem attachments (all sold separately) including: trimmer, blower, hedge trimmer, edger, pruner, cultivator and more

See full description

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Accessories

  • Warranty

  • Compare

Product Summary

This professional-grade STIHL® KombiMotor Gas-Powered Powerhead powers a comprehensive line of KombiSystem attachments (sold separately) that can turn this system into an ultra-versatile multi-task tool. Choose from trimmer, blower, hedge trimmer, edger, pruner, cultivator attachments and more. Each optional attachment slides effortlessly into the KombiMotor powerhead and is secured by a quick-release coupling system. The KombiSystem offers great power and flexibility for space-conscious homeowners.
This item may be purchased at select Northern Tool stores. Not available for online order at NorthernTool.com.

What's Included

    (1) KombiMotor powerhead

Features + Benefits

  • Simplified starting with semi-automatic choke lever and one-touch stop
  • Low emission STIHL engine delivers dependable power and fuel efficiency with 30% longer run times than previous models
  • Easy2Start? technology gets the 28.4cc engine running quickly and easily with just a gentle pull
  • Split-boom multi-tool shaft with quick-release coupling system provides quick and easy attachment changes
  • Powers up to 14 different KombiSystem attachments (all sold separately) including: trimmer, blower, hedge trimmer, edger, pruner, cultivator and more

Key Specs

AttributeSpecification

item#

63938

Brand

Stihl

Manufacturer's Warranty

2 year limited warranty

Ship Weight

14.4 LB

Product Type

Multi-task tool

Primary Power Source

Gas

Displacement (cc)

28.4
AttributeSpecification

Engine Displacement

28.4 cc

Fuel Tank Capacity (qt.)

24 oz.

Fuel Tank Capacity

0.75 qt

Cordless

Yes

Horsepower

1.27 HP

Shaft Type

Straight

Tool Weight

9.7

Reviews

Questions & Answers

388 Reviews This action will navigate to reviews.

Questions

1–3 of 3 Questions  
Sort by:

  1. What is the difference between a kombi motor and stiel motor

    1 answer

    1. The Stihl motor is any engine produced by Stihl and the "Kombi motor" generally refers to the power head or engine within the STIHL KombiSystem.

      Helpful?

  2. What is the fuel mixture for the KM91R?

    1 answer

    1. The engine is certified to operate on unleaded gasoline and the Stihl two stroke engine oil at a mix ratio of 50:1. Use mid grade high octane gasoline rating of 89 and no more than 10% ethanol content.

      Helpful?

  3. part number for trimmer attachment

    1 answer

    1. This Stihl KombiMotor powerhead has options for both string trimmers and hedge trimmers. Please see the following items: #63936 (Line Head Trimmer), #639151 (Straight Hedge Trimmer) and #63961 (Adjustable Hedge Trimmer).

      Helpful?

Accessories We Recommend

This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.

See All Motor Oil + Transmission Fluids
Honda Power Equipment 10W-30 Motor Oil, 1-Qt. Bottle
4.9 out of 5 stars. 176 reviews

Honda Power Equipment 10W-30 Motor Oil, 1-Qt. Bottle

Item # 1707002

$12.99

Warranty

Manufacturer's Warranty

2 year limited warranty

Extend Your Warranty Coverage with a Northern Protection Plan (NPP)

Replacement Plan — 1 Year

A Northern Protection Plan is available after adding the product to your shopping cart.

Recently Viewed Items

This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.

Stihl KombiMotor Gas-Powered Powerhead, 1.27 HP, 28.4cc, Model# KM 91 R
4.6 out of 5 stars. 388 reviews
60 of 388 reviewers received a sample product or took part in a promotion

Stihl KombiMotor Gas-Powered Powerhead, 1.27 HP, 28.4cc, Model# KM 91 R

Item # 63938

$429.99