026 Stihl Chainsaw Manual

The Stihl 026 is a professional-grade gasoline-powered chainsaw designed for demanding cutting tasks. It features a robust engine, anti-vibration system, quick-stop chain brake, automatic oiler, and easy-start technology. Below are key sections for safety, features, operation, maintenance, troubleshooting, and specifications.

Features at a Glance

Key components: Engine, guide bar, saw chain, anti-vibration handles, chain brake, throttle trigger, choke control, fuel and oil tanks.

Feature	Description
Engine Type	2-stroke, single-cylinder gasoline engine
Displacement	Approx. 49.4 cc
Power Output	Professional-grade cutting power
Anti-Vibration System	Reduces operator fatigue
QuickStop Chain Brake	Inertia-activated safety feature
Automatic Oiler	Lubricates bar and chain during operation
Decompression Valve	Easier starting
Fuel Tank Capacity	Approx. 0.5 liters
Oil Tank Capacity	Approx. 0.25 liters
Guide Bar Length Options	Typically 16" to 20"

Safety Instructions

Read all instructions before operation. Always wear protective gear.

1. Personal Protective Equipment (PPE): Wear safety glasses, hearing protection, gloves, chainsaw chaps, and steel-toed boots.
2. Work Area Safety: Clear area of obstacles, ensure secure footing, keep bystanders away.
3. Chain Brake: Test before each use. Understand kickback dangers and proper handling.
4. Fuel Safety: Mix fuel outdoors, away from sparks. Use correct oil/gasoline ratio (e.g., 50:1).

WARNING! Chainsaw kickback can cause severe injury. Always hold saw firmly with both hands. Never operate above shoulder height.

Assembly & Preparation

Unpack and inspect contents. Assemble guide bar and chain.

1. Attach Guide Bar: Place bar onto studs, align chain tensioning pin, install nuts finger-tight.
2. Install Saw Chain: Ensure cutting teeth face forward on top of bar. Fit chain into bar groove and around sprocket.
3. Tension Chain: Use tensioning screw to adjust. Chain should snap back when pulled from bar.
4. Fill Tanks: Add mixed fuel to fuel tank. Fill bar/chain oil tank with recommended oil.

CAUTION! Ensure chain brake is disengaged during assembly. Chain must be properly tensioned to prevent derailment.

Specifications

• Model: Stihl 026
• Engine Displacement: 49.4 cc
• Powerhead Weight: Approx. 5.3 kg (11.7 lbs)
• Fuel/Oil Ratio: 50:1 (Stihl HP Ultra or equivalent)
• Ignition System: Electronic, capacitor discharge
• Carburetor: Diaphragm-type with manual choke
• Chain Pitch/Gauge: Typically 3/8" PMM, .050" gauge
• Max. Recommended Bar Length: 20 inches
• Sound Power Level: Approx. 112 dB(A)

Controls and Components

Main Controls: Throttle trigger, throttle trigger lockout, choke control, master control lever (stop switch), chain brake lever, decompression valve.

Components: Front handle with chain brake, rear handle, fuel tank cap, oil tank cap, spark plug, air filter cover, muffler, chain catcher, anti-vibration elements.

Operation: Master control lever positions: Start (choke), Run, Stop. Chain brake engaged by hand guard or inertia. Throttle lockout must be depressed to activate throttle.

Starting & Operation

Cold Start Procedure (on ground):

1. Engage chain brake. Set master control lever to Start (choke).
2. Press decompression valve (if equipped).
3. Place saw on firm ground, hold rear handle with right foot.
4. Pull starter rope sharply until engine fires (1-3 pulls).
5. Move master control lever to Run. Pull starter rope to start.
6. Briefly blip throttle to disengage fast idle.

Cutting Techniques: Use lower quadrant of bar to avoid kickback. Let saw do the work; do not force. Plan escape path from falling tree or limb.

Chain & Bar Maintenance

Regular maintenance ensures optimal performance and safety.

1. Chain Sharpening: Use round file and guide. Maintain correct filing angle (typically 30°). File all cutters evenly.
2. Chain Tension: Check frequently when hot and cold. Adjust tensioning screw. Chain should not sag from bar.
3. Bar Maintenance: Clean bar groove. Flip bar periodically for even wear. Check for wear and straightness.
4. Oiler: Check oil output. Adjust oil flow screw if necessary. Ensure oil holes are clear.

WARNING! Always wear gloves when handling chain. Ensure engine is off and cool before maintenance.

Engine Maintenance

Air Filter: Clean regularly with soapy water or compressed air. Replace if damaged.

Spark Plug: Clean and check gap (0.020 inches). Replace annually or if worn.

Fuel Filter: Replace yearly or if clogged.

Muffler: Remove and clean spark arrestor screen periodically.

CAUTION! Use only Stihl-approved parts and lubricants. Dispose of waste oil properly.

Storage & Transport

Long-Term Storage:

1. Drain fuel tank and run engine until it stops to clear carburetor.
2. Remove chain, clean, and store in oil.
3. Clean entire saw, especially cooling fins and air filter.
4. Store in dry, secure place, with bar and chain separately.

Transport: Always engage chain brake. Use scabbard on guide bar. Secure in vehicle to prevent movement.

Warranty Information

Stihl Limited Warranty: Covers defects in materials and workmanship for a specified period from date of retail purchase. Warranty does not cover normal wear, misuse, neglect, or use of non-Stihl parts/fuel. Proof of purchase required. For warranty service, contact an authorized Stihl servicing dealer.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine will not start	No spark, flooded, old fuel	Check spark plug; use fresh fuel mix; follow cold start procedure.
Engine starts then dies	Clogged fuel filter, air filter, carburetor issues	Replace fuel filter; clean air filter; service carburetor.
Chain does not turn	Chain brake engaged, clutch worn, sprocket damaged	Disengage chain brake; inspect clutch and sprocket; replace if necessary.
Excessive vibration	Loose components, unbalanced chain, damaged anti-vibration mounts	Tighten all nuts/bolts; sharpen chain evenly; check mounts.
Chain throws oil but does not cut well	Dull chain, incorrect filing, worn drive links	Sharpen chain properly; check chain for wear; replace if necessary.

Service: For repairs beyond basic maintenance, take to an authorized Stihl dealer.

Support: Contact Stihl Inc. or visit www.stihlusa.com for dealer locator and manuals.