Stihl SH85 Manual

The Stihl SH85 is a professional-grade handheld blower designed for demanding landscaping and cleanup tasks. It features a powerful 2-stroke engine, variable speed control, ergonomic design with anti-vibration system, easy-start technology, and a robust air filtration system. Below are key sections for safety, features, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 2-stroke engine, throttle trigger with lock, choke lever, stop switch, fuel tank, air filter cover, blower tube, and shoulder strap attachment points.

Feature	Description
Engine Type	2-stroke, single cylinder, air-cooled
Displacement	27.2 cc
Power Output	0.9 kW (1.2 hp)
Fuel Tank Capacity	0.5 liters
Sound Power Level	112 dB(A)
Weight (without fuel)	4.2 kg
Airflow Speed	Up to 83 m/s
Air Volume	Up to 800 m³/h
Anti-Vibration System	Reduces operator fatigue
Easy-Start System	Simplifies starting procedure

Safety Instructions

Read and understand all instructions before operation.

1. Wear appropriate PPE: Safety glasses, hearing protection, gloves, and sturdy footwear.
2. Operate in well-ventilated areas only to avoid carbon monoxide poisoning.
3. Keep bystanders, especially children and pets, at a safe distance.
4. Inspect unit before each use for loose parts, damage, or fuel leaks.

WARNING! Never operate the blower indoors or in enclosed spaces. Fuel is highly flammable; handle with care away from ignition sources.

Assembly & Preparation

Unpack and inspect all components.

1. Attach blower tube: Align tube with outlet, push firmly until it clicks into place.
2. Install shoulder strap: Attach hooks to designated points on the blower housing.
3. Fuel mixture: Use STIHL 2-stroke engine oil mixed with unleaded gasoline (50:1 ratio).
4. Fill fuel tank: Use clean fuel container; avoid overfilling.

CAUTION! Use only STIHL-approved oil and fuel mixtures. Incorrect fuel can cause severe engine damage.

Specifications

• Model: SH85
• Engine: 2-stroke, 27.2 cc
• Maximum Power: 0.9 kW at 7,500 rpm
• Idle Speed: 2,800 rpm
• Fuel Consumption: Approx. 0.6 liters/hour at maximum power
• Sound Pressure Level: 94 dB(A)
• Vibration Level (front/rear handle): 4.5/3.5 m/s²
• Warranty: 2 years commercial use, 1 year professional use
• Compliance: Meets EPA Phase II and EU Stage II emissions standards

Controls and Operation

Main controls located on the handle assembly.

Handle Controls: Throttle trigger, throttle trigger lock, choke lever, stop switch, master control lever.

Starting Procedure: Move master control to cold start position (choke on). Press fuel pump bulb 5 times. Pull starter rope briskly until engine fires. Move master control to half-throttle position. Pull starter rope again to start. Allow 30 seconds warm-up at idle.

Operation: Squeeze throttle trigger for variable speed control. Use throttle lock for continuous operation. Adjust shoulder strap for comfortable weight distribution.

Fuel & Lubrication

Use fresh unleaded gasoline with minimum 89 octane rating.

1. Fuel mixture: 50:1 ratio (50 parts gasoline to 1 part STIHL 2-stroke oil).
2. Mix fuel in approved container before adding to tank.
3. Never use automotive oil, diesel fuel, or pre-mixed fuels not meeting STIHL specifications.
4. Lubrication: Engine lubricated through fuel mixture. No separate lubrication required.

Tip: Use fuel within 30 days of mixing. Store in approved container away from sunlight.

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

1. Daily: Clean air filter, check for loose fasteners, inspect blower tube for obstructions.
2. Weekly: Clean cooling fins, check spark plug condition, inspect fuel lines.
3. Monthly: Clean carburetor, check anti-vibration elements, inspect exhaust system.
4. Annually: Replace spark plug, clean fuel tank, professional servicing recommended.

WARNING! Always stop engine and allow to cool before maintenance. Disconnect spark plug wire for safety.

Storage Guidelines

Proper storage prevents fuel system damage and corrosion.

1. Short-term (under 30 days): Fill fuel tank to prevent condensation.
2. Long-term: Drain fuel tank completely. Run engine until it stops to clear carburetor.
3. Clean entire unit, especially cooling fins and air filter.
4. Store in dry, cool place with spark plug wire disconnected.

CAUTION! Never store with fuel in tank for extended periods. Fuel deterioration can damage engine components.

Warranty Information

STIHL Limited Warranty: 2 years for commercial use, 1 year for professional use from date of purchase. Warranty covers defects in materials and workmanship. Not covered: normal wear, misuse, improper maintenance, unauthorized repairs. For warranty service, contact authorized STIHL dealer with proof of purchase.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel, flooded engine, spark plug	Check fuel level; wait if flooded; clean/replace spark plug.
Engine runs poorly	Dirty air filter, old fuel	Clean air filter; replace with fresh fuel mixture.
Loss of power	Clogged fuel filter, exhaust screen	Replace fuel filter; clean exhaust screen.
Excessive vibration	Loose components, damaged tube	Tighten all fasteners; inspect blower tube.
Airflow reduced	Tube obstruction, worn impeller	Clear tube; inspect impeller for damage.

Service: For repairs beyond basic maintenance, contact authorized STIHL dealer.

Support: 1-800-467-8445; www.stihlusa.com