Description
Stihl KM 131R KOMBISYSTEM Gas Powered Split Shaft Power Head
Maximize jobsite versatility while cutting down on trailer clutter with the STIHL 41802000591 KM 131 R KombiEngine Gas Powerhead. Engineered specifically for professional landscape contractors, groundskeeping crews, and municipal maintenance teams, this top-of-the-line multi-task power unit drives the entire line of 14+ interchangeable STIHL KombiTools with a single engine.
Powered by a commercial-grade 36.3 cc STIHL 4-MIX® engine (1.9 bhp / 1.4 kW), the KM 131 R combines the fast acceleration and lightweight balance of a 2-stroke with the low emissions, high lugging torque, and fuel efficiency of a 4-stroke. An enlarged 24 oz. fuel tank provides up to 30% longer run times between fill-ups, while the built-in automatic decompression system ensures easy, smooth pull starts every time. Switching between string trimmers, pole pruners, bed redefiners, and power sweepers is effortless thanks to the heavy-duty tool-free quick-release split-shaft coupling.
Key Features:
- High-Torque 36.3 cc STIHL 4-MIX® Engine: Delivers 1.9 bhp of commercial cutting power with low emissions and excellent fuel economy.
- One Powerhead, 14+ KombiTools: Runs string trimmers, edgers, hedge trimmers, pole saws, cultivators, and blowers from a single engine.
- Tool-Free Quick Coupling: Heavy-duty split-shaft clamp with clamping screw enables rapid attachment swaps and compact transport in truck beds.
- Extended Run Time Fuel Tank: 24 oz. translucent fuel tank offers up to 30% longer continuous cutting intervals.
- Automatic Decompression Mechanism: Automatically vents compression during pull-starts to minimize starter cord resistance.
- Ergonomic Loop Handle (R): Features an adjustable barrier bar for comfortable control on slopes, tight corners, and overhead reach.
- Paper Air Filter System: High-capacity pleated paper filter extends maintenance intervals and protects against fine abrasive dust.
- Simplified Starting Procedure: Semi-automatic choke lever and momentary stop switch automatically return the unit to the run position.
Specifications
| Specification | Details |
| Brand | STIHL |
| Series | KombiSystem / KombiEngine |
| Model / Item Code | KM 131 R (Part #: 41802000591) |
| Engine Type | STIHL 4-MIX® Commercial Hybrid Engine |
| Displacement | 36.3 cc (2.2 cu. in.) |
| Engine Power Output | 1.4 kW / 1.9 bhp |
| Fuel Type | 50:1 Gas / 2-Cycle Oil Mix (Pre-mixed STIHL MotoMix Recommended) |
| Fuel Tank Capacity | 24.0 fl. oz. (710 cc) |
| Starting System | Pull-Start with Automatic Mechanical Decompression |
| Handle Configuration | Loop Handle with Barrier Bar |
| Shaft Style | Heavy-Duty Split-Shaft with Tool-Free Quick Coupling |
| Weight (Powerhead Only) | 9.7 lbs (4.4 kg) without fuel/attachment |
| Emissions Standards | EPA Phase 3 / CARB Compliant |
Frequently Asked Questions
What fuel does the STIHL 4-MIX® engine use?
Although it utilizes 4-stroke valve technology, the STIHL 4-MIX® engine is lubricated through its fuel mixture. It runs on a standard 50:1 ratio of gasoline mixed with 2-cycle engine oil (such as STIHL HP Ultra) or pre-mixed STIHL MotoMix fuel. It does not require separate crankcase oil changes.
How do I attach KombiTools to the powerhead?
The KM 131 R features a tool-free quick-release coupler. Simply loosen the clamping wing screw on the shaft, slide your desired KombiTool attachment into the sleeve until the alignment pin clicks into place, and hand-tighten the thumb screw.
What is the difference between the KM 131 R and smaller models like the KM 91 R?
The KM 131 R is STIHL's most powerful gas KombiEngine, featuring a larger 36.3 cc engine (1.9 bhp) compared to the KM 91 R (28.4 cc / 1.27 bhp). It is engineered for demanding commercial tasks such as bed re-defining, heavy brush clearing, high-reach pole sawing, and power sweeping.
Does this powerhead include any attachments?
No. Part number 41802000591 is the dedicated powerhead unit (engine and upper shaft). KombiTools (such as the FS-KM trimmer head, HL-KM hedge trimmer, HT-KM pole pruner, or BG-KM blower) are sold separately to let you customize your tool kit.
Why choose a loop handle (R) over a bike handle?
The loop handle configuration gives you optimal maneuverability when working at various angles, including vertical hedge trimming, tight edging along curbs, reaching into flowerbeds, and elevated pruning.
Product Specifications
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Powerful 36.3 cc STIHL 4-MIX engine combines the benefits of 2-stroke and 4-stroke performance Simplified starting system features a semi-automatic choke and manual fuel pump for quick, easy startups |
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✔ 36.3cc 4-MIX Engine: Delivers high torque and fast acceleration without requiring mixed oil maintenance ✔ 30% Larger Fuel Tank: Extended capacity lets you work longer between fill-ups for maximum uptime |
