This document is the Operator's Manual for the ECHO Power Blower, model PB-603, with serial numbers ranging from 03001001 to 03999999. It provides comprehensive information on the safe operation, maintenance, and specifications of the device.
Function Description:
The ECHO PB-603 is a gasoline-powered blower designed for various outdoor cleaning tasks, such as moving leaves, grass clippings, dirt, and light snow. It is a backpack-style blower, meaning it is worn on the operator's back, providing portability and ease of use for extended periods. The blower utilizes a two-stroke engine to generate a powerful air stream through its blower pipes.
Important Technical Specifications:
- Model: PB-603
- Engine Type: Air-cooled, two-stroke, single-cylinder gasoline engine
- Displacement: 58.2 cc (3.56 cu. in.)
- Bore: 46.0 mm (1.81 in.)
- Stroke: 35.0 mm (1.38 in.)
- Carburetor: Zama Diaphragm, model C1M w/primer bulb
- Ignition System: Flywheel Magneto, capacitor discharge ignition type
- Spark Plug: NGK BPM-7Y, Gap 0.65 mm (0.026 in.)
- Exhaust System: Spark Arrestor Muffler
- Fuel: Mixed (Gasoline and Two-stroke Oil)
- Fuel/Oil Ratio: 50:1 two-stroke air-cooled engine oil
- Gasoline Recommendation: 89 Octane unleaded. DO NOT use fuel containing methyl alcohol, more than 10% ethyl alcohol, or 15% MTBE.
- Oil Recommendation: Power Blend™ Premium Universal 2-Stroke Oil
- Fuel Tank Capacity: 1.9 lit. (64.3 US fl. oz.)
- Recoil Starter System: Automatic Recoil Starter Centrifugal Type
- Idle Speed: 2,300-3,200 RPM
- Wide Open Throttle Speed: 7,000-8,000 RPM
- Maximum Air Speed (Measured at pipe end): 306 KM/H (190 mph)
- Average Air Volume (Measured at pipe end): 15.1 cu. m/min. (535 cu. ft./min.)
- Sound Level at 50 ft. dB(A) scale (per ANSI B175.2): 72 dB(A)
- Dimensions:
- Length: 320 mm (12.6 in.)
- Width: 460 mm (18.1 in.)
- Height: 480 mm (18.9 in.) (in blower configuration w/side handle)
- Weight (dry): 8.7 kg (19.3 lb.)
- Emission Control: EPA Phase 1 compliant, with a 300-hour emission durability compliance period.
Usage Features:
The PB-603 is designed for user comfort and control.
- Shoulder Harness: Adjustable straps support the unit on the operator's back, distributing weight for comfort during prolonged use.
- Handle: Features a locking knob for adjusting handle position to optimize comfort and control of airflow.
- Throttle Control: Includes a throttle position lever to set engine speed and a spring-loaded throttle trigger for gradual acceleration. A stop switch is conveniently located on top of the handle.
- Starting System: Equipped with a primer bulb for easy cold starting, a choke lever with "COLD START" and "RUN" positions, and a recoil starter handle.
- Blower Pipes: Utilizes a twist-lock design for easy assembly and disassembly of the blower pipes. A flexible pipe allows for a full range of movement.
- Safety Decals: Important safety warnings and instructions are clearly marked on the unit, including a hot decal near the muffler and a general warning decal on the blower housing.
- Noise Control: The manual emphasizes operating at appropriate hours and using lower speed settings when possible to minimize noise.
Maintenance Features:
The manual outlines a comprehensive maintenance schedule to ensure long life and dependable operation. Maintenance tasks are categorized by skill level (Level 1: Easy, Level 2: Moderate, Level 3: Experience required/Dealer service recommended).
- Daily/Before Use:
- Inspect/Clean/Replace Air Filter (Level 1)
- Inspect/Clean Choke (Level 2)
- Inspect/Replace Fuel System, Leaks (Level 1)
- Inspect/Clean Cooling System (Level 2)
- Inspect/Clean Recoil Starter Rope (Level 1)
- Inspect/Tighten/Replace Screws/Nuts/Bolts (Level 1)
- Every Refuel:
- Inspect/Replace Fuel System, Leaks (Level 1)
- Inspect/Tighten/Replace Screws/Nuts/Bolts (Level 1)
- 3 Months or 90 Hours:
- Inspect/Clean/Decarbon Cylinder Exhaust Port (Level 3 - Dealer Recommended)
- Inspect/Replace Muffler Spark Arrestor (Level 2)
- Inspect/Clean Spark Plug (Level 2)
- 6 Months or 270 Hours:
- Inspect/Replace Spark Plug (Level 2)
- Yearly:
- Inspect/Replace Fuel Filter (Level 1)
- Inspect/Replace Recoil Starter Rope (Level 1)
- Air Filter: Clean daily. If fuel-soaked or very dirty, replace.
- Fuel Filter: Replace yearly or as needed. Requires a "fuel line hook" tool.
- Spark Plug: Inspect, clean, and adjust gap (0.65 mm / 0.026 in.) every 3 months or 90 hours. Replace yearly.
- Cooling System: Inspect and clean cylinder fins and intake grill to prevent overheating.
- Exhaust System: Periodically check and clean the spark arrestor screen to prevent carbon buildup and maintain engine output.
- Carburetor Adjustment: Detailed instructions for engine break-in, high altitude adjustment, and final adjustment of idle, low, and high-speed screws. Limiter caps are present to prevent over-rich adjustment.
- Storage: Instructions for long-term storage (over 30 days) include draining fuel, lubricating the cylinder, and proper placement of the piston.
The manual emphasizes the importance of reading and understanding all safety instructions, wearing appropriate personal protective equipment (eye, ear, hand, and breathing protection), and being aware of the work environment to prevent serious personal injury. It also highlights the risks of extended operation, such as vibration-related conditions (Raynaud's Phenomenon) and repetitive stress injuries (RSI/Carpal Tunnel Syndrome).
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