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User must be in good physical and mental health, not fatigued or under influence of substances.
Wear sturdy, snug-fitting clothing, gloves, boots, and possibly a hard hat.
Carry upright with blades behind, switch off engine, use scabbard for long distances.
Check for proper condition, operation, throttle trigger, interlock, stop switch, cutting tool, and starting lock.
Fuel in well-ventilated areas outdoors. Handle gasoline with care to avoid fire.
Operate outdoors in ventilated area, good visibility, daylight. Work carefully on uneven ground or slopes.
Do not cut material other than hedges/shrubs. Hold firmly with both hands. Never operate with one hand.
Use only STIHL parts. Stop engine before maintenance. Do not attempt unlisted work.
Basic high/low speed adjustment and corrections for atmospheric conditions like altitude or sea level.
Addresses cutting blades running at idle, engine stopping, erratic idling, and exhaust smoke problems.
Procedure for tensioning the rewind spring after installation.
Steps for safely removing old parts and fitting a new rewind spring.
Guidance on the initial break-in period and general operational advice.
Procedures for preparing the machine after use, before storing it.
User must be in good physical and mental health, not fatigued or under influence of substances.
Wear sturdy, snug-fitting clothing, gloves, boots, and possibly a hard hat.
Carry upright with blades behind, switch off engine, use scabbard for long distances.
Check for proper condition, operation, throttle trigger, interlock, stop switch, cutting tool, and starting lock.
Fuel in well-ventilated areas outdoors. Handle gasoline with care to avoid fire.
Operate outdoors in ventilated area, good visibility, daylight. Work carefully on uneven ground or slopes.
Do not cut material other than hedges/shrubs. Hold firmly with both hands. Never operate with one hand.
Use only STIHL parts. Stop engine before maintenance. Do not attempt unlisted work.
Basic high/low speed adjustment and corrections for atmospheric conditions like altitude or sea level.
Addresses cutting blades running at idle, engine stopping, erratic idling, and exhaust smoke problems.
Procedure for tensioning the rewind spring after installation.
Steps for safely removing old parts and fitting a new rewind spring.
Guidance on the initial break-in period and general operational advice.
Procedures for preparing the machine after use, before storing it.
The STIHL HS 72 and HS 74 are hedge trimmers designed for cutting hedges and shrubs. These are high-speed cutting tools, and their operation requires adherence to specific safety precautions to minimize the risk of personal injury. The manual emphasizes that careless or improper use can lead to serious or even fatal injury.
The hedge trimmer is a single-cylinder, two-stroke engine-powered tool. Its primary function is to trim hedges and shrubs using steel cutter blades. The HS 74 model features a rear handle with a twist lock, allowing it to be rotated 90° to the left or right for improved control and comfort during operation. The engine's speed is controlled by a throttle trigger, which must be depressed after activating the throttle trigger interlock. A starting lock helps prevent cutter blade movement during startup. For cold starts, a fuel pump bulb provides additional fuel feed.
The manual also includes a warning regarding engine exhaust containing chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
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