HT 73 - Saw STIHL - Free user manual and instructions
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| Product Type | Pole Pruner / Pole Saw |
| Engine Displacement | 27.2 cm³ |
| Power Source | Gasoline (2-stroke) |
| Guide Bar Length | 30 cm (12 in) |
| Overall Length | 270-300 cm (adjustable) |
| Weight (without cutting attachment) | 4.5 kg |
| Weight (with cutting attachment) | 5.0 kg |
| Fuel Capacity | 0.33 L |
| Oil Capacity | 0.22 L |
| Chain Pitch | 3/8 in (0.325 in) |
| Chain Gauge | 0.050 in (1.3 mm) |
| Chain Brake | Yes (inertia-activated) |
| Throttle Trigger Lockout | Yes |
| Anti-Vibration System | Yes |
| Fuel Mixture Ratio | 50:1 (gasoline:2-stroke oil) |
| Recommended Oil | STIHL HP Ultra or equivalent |
| Maintenance Interval (Air Filter) | Every 10 hours |
| Maintenance Interval (Spark Plug) | Every 100 hours |
| Replaceable Guide Bar | Yes |
| Replaceable Saw Chain | Yes |
| Spare Parts Availability | Widely available via STIHL dealers |
Frequently Asked Questions - HT 73 STIHL
What fuel mixture does the STIHL HT 73 require?
The STIHL HT 73 requires a 50:1 mixture of unleaded gasoline and high-quality 2-stroke engine oil, such as STIHL HP Ultra.
How do I adjust the chain tension?
Loosen the bar nuts slightly, turn the tensioning screw (usually on the side) clockwise to tighten, counterclockwise to loosen. The chain should have about 1-2 mm of clearance from the bottom of the bar when pulled.
What is the correct chain sharpening angle?
Sharpen the cutters at 30° for the side plate and 85° for the top plate, using a round file of appropriate diameter (typically 4.0 mm for a 3/8" pitch chain).
How often should I clean the air filter?
Clean the air filter every 10 hours of operation or more frequently in dusty conditions. Remove the filter cover, tap out dirt, or wash with warm water and mild soap. Let it dry completely before reinstalling.
What type of guide bar oil should I use?
Use a biodegradable chain and bar oil specifically designed for chainsaws, such as STIHL BioPlus. This ensures proper lubrication and reduces environmental impact.
How do I start the STIHL HT 73?
1. Place the saw on a stable surface. 2. Activate the chain brake. 3. Set the master control to START. 4. Pull the starter rope firmly. 5. Once it starts, let it idle for a few seconds before using. Refer to the manual for the complete procedure.
What safety equipment is recommended?
Always wear eye protection, hearing protection, helmet, cut-resistant gloves, chainsaw chaps, and non-slip boots. Avoid loose clothing and tie back long hair.
Can I use a longer guide bar?
The maximum recommended guide bar length for the HT 73 is 30 cm (12 in). Using a longer bar can reduce performance and increase risk of kickback.
How do I store the pole saw?
Drain the fuel tank and run the engine until it stops to prevent carburetor issues. Clean the saw, apply a light oil coat to the chain and bar, and store it in a dry, secure place away from children.
What are the common causes of engine starting problems?
Possible causes include stale fuel, clogged air filter, dirty spark plug, incorrect fuel mixture, or choke not set correctly. Check these components first.
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USER MANUAL HT 73 STIHL
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Product information
Brand : STIHL
Model : HT 73
Category : Saw