Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your PROYAMA 72CC Gas Backpack Leaf Blower. Please read it thoroughly before initial use and keep it for future reference.
Key Features:
- Powerful 72CC 2-cycle engine delivering 3.7HP.
- High-performance airflow up to 880CFM and 275MPH.
- Dual-tube design with flat and round nozzles for versatile use.
- Ergonomic backpack design with shock-absorbing straps and balanced weight distribution.
- Thickened backrest for heat isolation and comfort.
- Self-throttle lock and variable speed throttle with cruise control for effortless operation.
- High-efficiency air filter for engine protection.
What's in the Box
Upon unboxing, ensure all components listed below are present and undamaged.

Image: All components of the PROYAMA 72CC Gas Backpack Leaf Blower laid out for inspection.
- PROYAMA 72CC Gas Backpack Leaf Blower Unit
- Flexible Blower Tube
- Extension Tubes (Round and Flat Nozzles)
- Throttle Handle with Control Cable
- Backpack Harness Assembly
- Fuel Mixing Bottle
- Funnel
- Tool Kit (Wrench, Screwdriver)
- Hose Clamps
- Instruction Manual
Unboxing Video:
Video: A detailed unboxing of the PROYAMA 72CC Gas Backpack Leaf Blower, showing all included components and initial setup steps.
Setup
Assembly:
Follow these steps to assemble your leaf blower:
- Attach the flexible blower tube to the blower unit's air outlet using the provided clamps. Ensure a secure fit.
- Connect the throttle handle and control cable to the flexible tube and the engine.
- Attach the desired extension tubes (round or flat nozzle) to the end of the flexible tube. Secure with clips or by twisting until locked.
- Adjust the backpack harness for a comfortable and secure fit.
Assembly Video:
Video: Step-by-step guide on how to assemble the PROYAMA 72CC Gas Backpack Leaf Blower.
Fuel Mixing:
This is a 2-cycle engine and requires a specific fuel-to-oil mixture. Use unleaded gasoline with a minimum octane rating of 87 and a high-quality 2-cycle engine oil. The recommended mixing ratio is 50:1 (50 parts gasoline to 1 part oil). Use the provided mixing bottle to ensure accurate proportions. Shake the mixture thoroughly before pouring into the fuel tank.

Image: The PROYAMA 72CC Gas Backpack Leaf Blower highlighting the 50:1 fuel mix ratio.
Operating Instructions
Starting Procedure:
- Fill the fuel tank with the correct 50:1 gasoline-oil mixture.
- Press the primer bulb 6-7 times until fuel is visible in the return line.
- Move the choke lever to the 'CLOSED' (choke) position.
- Pull the starter cord firmly until the engine attempts to start (usually 1-3 pulls).
- Once the engine attempts to start, move the choke lever to the 'OPEN' position.
- Pull the starter cord again until the engine starts and runs smoothly.
- Allow the engine to warm up for a few moments before operating at full throttle.
Starting Video:
Video: Demonstrates the correct procedure for starting the PROYAMA 72CC Gas Backpack Leaf Blower.
Nozzle Selection:
The blower comes with two types of nozzles for different tasks:
- Round Nozzle: Ideal for general clearing of leaves and debris in open areas.
- Flat Nozzle: Provides a concentrated air stream for stubborn debris, wet leaves, or precise cleaning in tight spaces.

Image: Illustration of the round and flat nozzle attachments for varied blowing tasks.
Variable Speed and Cruise Control:
The throttle handle features a variable speed trigger and a cruise control lever. Use the trigger to adjust the airflow intensity. For prolonged operation, engage the cruise control to maintain a consistent engine speed without continuously holding the trigger, reducing user fatigue.

Image: Close-up of the throttle handle, showing the variable speed trigger and cruise control lever.
Outdoor Operation Video:
Video: Demonstrates the PROYAMA 72CC Gas Backpack Leaf Blower in action, clearing leaves and debris in an outdoor setting.
Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your leaf blower.
Air Filter:
Regularly inspect and clean the air filter. A clogged air filter can reduce engine performance and increase fuel consumption. Clean with warm, soapy water, rinse thoroughly, and allow to dry completely before reinstallation. Replace if damaged.
Spark Plug:
Check the spark plug periodically for wear or carbon buildup. Clean or replace as necessary to ensure reliable starting and efficient combustion.
Spark Plug Check Video:
Video: Instructions on how to properly check the spark plug of the PROYAMA 72CC Gas Backpack Leaf Blower.
Troubleshooting
If you encounter issues with your leaf blower, refer to the following common troubleshooting tips:
- Engine not starting: Ensure the fuel tank has the correct fuel mixture. Check the spark plug for proper connection and cleanliness. Verify the choke lever is in the correct position.
- Loss of power: Inspect the air filter for clogs and clean if necessary. Ensure the fuel mixture is correct and fresh.
- Excessive vibration: Check all connections and fasteners for tightness. Ensure the blower tubes are securely attached.
For more detailed troubleshooting or persistent issues, please contact customer support.
Specifications
| Specification | Value |
|---|---|
| Brand | PROYAMA |
| Model Name | Leaf Blower (PR-BPLB-72) |
| Engine Type | 72CC 2-Cycle Gas Engine |
| Horsepower | 3.7 HP |
| Max Air Volume | 880 CFM |
| Max Air Speed | 275 MPH |
| Fuel Mix Ratio | 50:1 (Gasoline:2-Cycle Oil) |
| Fuel Tank Capacity | 1.8 L (approx. 40 minutes run time) |
| Item Weight | 21 Pounds |
| Product Dimensions | 18"L x 14.5"W x 22"H |
| Sound Pressure | 72 dB(A) @ 50 ft. |
Warranty & Support
Your PROYAMA 72CC Gas Backpack Leaf Blower is covered by a manufacturer's warranty. For specific warranty details, please refer to the documentation included with your product or contact PROYAMA customer support.
Customer Support:
If you have any questions, require technical assistance, or need to claim warranty service, please contact PROYAMA customer service through Amazon. Our expert team aims to provide professional assistance within 12 hours.

Image: Instructions on how to contact PROYAMA customer service via Amazon for support.
Protection Plans:
Extended protection plans are available for purchase to cover your product beyond the standard manufacturer's warranty. Options include 2-Year Protection Plan, 3-Year Protection Plan, and Complete Protect (monthly subscription covering eligible past and future purchases).





