• Engine: 42cc 2 Stroke Engine
• Air Velocity: 185 MPH/ 510CFM
• Trigger: Variable Speed Throttle
• Weight: 18 lbs.

• Backpack Blower
• Throttle Control Handle Tube
• Straight Tube
• Nozzle
• 2 Cycle Engine Lubricant
• Assembly Tool
• Operator’s Manual

What is the correct fuel mixture to use with my 2 cycle engine RYOBI Outdoor Product?

Your 2-cycle engine requires pre-mixing gasoline and 2-cycle lubricant. Pre-mix unleaded gasoline and 2-cycle engine lubricant in a clean gas container. DO NOT mix quantities larger than usable in a 30-day period. Do not use automotive lubricant or 2-cycle outboard lubricant. We recommend using a RYOBI/Homelite premium 2-cycle oil or a PowerCare 2-cycle oil.

Filling your tank:

• Clean surface around fuel cap to prevent contamination
• Loosen fuel cap slowly. Rest the cap on a clean surface.
• Carefully pour fuel into the tank. Avoid spillage.
• Prior to replacing the fuel cap, clean around the gasket.
• Immediately replace fuel cap and hand tighten. Wipe up any fuel spillage

Note: it is normal for smoke to be emitted from a new engine after fist use.

How do I adjust the harness on the backpack blower?

Note: Adjust the straps to a comfortable position before you start the blower

• The blower should be in the operating position before adjusting the harness straps
• Slip your arm through the harness strap and onto one shoulder, then repeat for the other shoulder
• Grasp the lower adjustment strap and tighten (pull down on strap) until the backpack blower rests comfortably against the small of your back
• Next, grasp the upper adjustment straps and tighten (pull down on strap) until the backpack blower fits comfortably on the shoulders
• Once the blower feels comfortable, secure the chest strap
• 
  

  

How do I assemble the blower tubes on my backpack blower?

• Place a large tube clamp onto the outer slot of the upper (wider) end of the bellows
• Attach upper end of bellows onto blower housing by sliding it over the air outlet
• The raised ridge closest to the air outlet should securely fit into the slot inside the bellows when the bellows are properly installed
• Tighten the large tube clamp using the assembly tool and place a tube clamp on other end of bellows
• Then press bellows onto throttle control handle tube and tighten the small tube clamp using the assembly tool

NOTE: The position of the throttle control handle may be adjusted for comfort after the blower is strapped onto the operator’s back

• Join the straight tube and nozzle together by aligning raised locking tabs on straight tube with the raised locking slots on nozzle and twist to secure
• Assemble the connected lower tubes to the throttle control handle tube by aligning raised locking tabs on the throttle control handle tube with the raised locking slots on connected lower tubes by twisting to secure

NOTE: Check all locking connections after initial run to ensure they are tightly secured

CAUTION: Make all adjustments to the harness straps before start­ing the blower to avoid the possibility of injury.

How do I fill the fuel tank on the backpack blower?

How do I fill the fuel tank on the backpack blower?

• Clean surface around fuel cap to prevent contamination
• Loosen the fuel cap slowly by turning counterclockwise and rest the cap on a clean surface
• Carefully pour fuel into the tank and make sure to avoid spillage
• Prior to replacing the fuel cap, clean and inspect the gasket
• Immediately replace fuel cap and hand tighten by turning it clockwise
• Wipe up any fuel spillage
• Move at least 30 ft. away from refueling area before starting the product

WARNING: Check for fuel leaks, which are a fire hazard. Failure to do so could result in a fire that could cause serious personal injury.

NOTE: It is normal for smoke to be emitted from a new engine after first use.

WARNING: Always shut off engine before fueling. Never add fuel to a machine with a running or hot engine. Move at least 30 ft. from refueling site before starting engine. Do not smoke and stay away from open flames and sparks. Failure to safely handle fuel could result in serious personal injury.

How do I start and stop the backpack blower?

• Blower should be on a flat, bare surface for starting
• Slowly press the primer bulb 10 times

NOTE: After the 10th press, fuel should be visible in the primer bulb. If it is not, continue to press the primer until you see fuel in the bulb.

• Unlock the cruise control (set to Idle)
• Set the choke lever to the START position A
• Pull starter grip sharply until engine attempts to run
  Note: Do not pull the starter grip more than five (5) times.
• Set the choke lever to the RUN position B
• Pull the starter grip and rope until the engine runs
  Note: Do not pull the starter grip more than six (6) times.

NOTE: If the engine does not start, return to the START position and repeat the steps that follow.
Allow the engine to run for 10 seconds before using the blower.

TO STOP THE ENGINE:

• To stop the engine, depress the STOP switch to the stop position “ O ”

HOT RESTART OF THE ENGINE:

• Set the choke lever to the RUN position
• Lock the cruise control
• Then pull the starter grip until the engine runs

How do I use the cruise control on the backpack blower?

• The cruise control can be used to operate the blower without holding the throttle trigger

To engage the cruise control:

• Push cruise control lever down and stop at the desired throttle setting.
• To release the cruise control, pull cruise control lever all the way up

How do I clean the exhaust port on the backpack blower?

NOTE: Depending on the type of fuel used, the type and amount of lubricant used, and/or your operating conditions, the exhaust port, muffler, and/or spark arrestor screen may be¬come blocked with carbon deposits. If you notice a power loss with your gas powered tool, you may need to remove these deposits to restore performance. We highly recommend that only qualified service technicians perform this service.

WARNING: Never run the blower without a muffler equipped with a spark arrestor in place. Failure to do so could result in a fire that could cause serious personal injury.

How do I store the backpack blower for less than one month?

• Clean all foreign material from the product
• Store it in a well-ventilated place that is inaccessible to children and keep away from corrosive agents such as garden chemicals and de-icing salts
• Abide by all Federal and local regulations for the safe storage and handling of gasoline

How do I store the backpack blower for more than 1 month?

• Drain all fuel from tank into a container approved for gasoline
• Run engine until it stops

42cc Backpack Blower - Model ry08420, ry08420a

Click the link below to access outdoor products replacement parts schematics and order parts online.

For those customers that prefer ordering by phone, simply contact the Ryobi master parts distributor at toll free 1-877-545-4110, and place your order over the phone.

Visit Ryobi Outdoor Parts Store