Easy
15-30 minutes
This is a genuine OEM replacement part, it is sold individually. The purpose of this filter is to keep dirt and other small particles from entering the carburetor and engine and causing internal engine damage. Once this type of filter gets clogged or dirty it should be changed (Not Cleaned). Air Filter Box and Filter Cover are sold Separately.
Air Filter 900777005
OEM part for: Ryobi
Part Number: 900777005
$5.32
In Stock
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Compatibility
This part will fit the following 5 machines
Ryobi
RY08420 Blower/Vacuum View Diagrams & Manuals
RY08420A Backpack Blower View Diagrams & Manuals
RY42WB (090248001) Wheeled Blower View Diagrams & Manuals
RY42WB (090248003) Wheeled Blower View Diagrams & Manuals
RY42WB (090248002) Wheeled Blower View Diagrams & Manuals
This item works with the following types of products:
- Blower Parts
- Vacuum Parts
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easy repair
works great
Frank -
November 14, 2022
Verified Purchase
Back Pack Blower Air Filter
The part lying on a "graft Measurement" assured it would fit perfectly.
Guest -
October 29, 2020
Verified Purchase
Efficient
Part was easily searchable, found it almost immediately. Part arrived quickly and was the correct part for the unit.
Guest -
September 3, 2019
Verified Purchase
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Air filter clogged
ken - March 13, 2017
👍 3 of 3 people found this instruction helpful
Tool Type
Blower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Remove the air box cover and the air filter box
Remove the old filter and install the new filter
Replace the air filter box and the air box cover
Remove the old filter and install the new filter
Replace the air filter box and the air box cover
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Backpack leaf blower would not keep running
Ron - December 20, 2016
👍 2 of 2 people found this instruction helpful
Tool Type
Blower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Power Drill
Removed the backpack from the engine
Removed the carburetor cover
Remove and replace the air filter
Remove and replace the spark plug, gap it 0.025
Remove and replace gas cap
Replace backpack to the engine
Removed the carburetor cover
Remove and replace the air filter
Remove and replace the spark plug, gap it 0.025
Remove and replace gas cap
Replace backpack to the engine
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Blower would not start, rings were stuck in piston.
Kenneth - May 12, 2017
👍 2 of 3 people found this instruction helpful
Tool Type
Blower
Difficulty
Hard
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Wrench Set, Torx and Hex bits, metric tap
The backpack blower would not start. It's 3 years old and based on other forums, I concluded, correctly, that the rings were frozen in the piston. A short block seemed like a quick and easy fix. The other being disassemble the block and try to free up the rings. Disassemble the blower, and lay all the pieces in order. Note that you can take the engine/blower off the backpack by turning the unit over and unscrewing the mounting springs from underneath.
After that, it's simply a matter of removing all of the pieces. You will need a #25 Torx bit and a hex wrench. Pay close attention to the order you remove things because you cannot always get to the screw if you do them out of order. For example, there is a mounting screw that cannot be reached if you reinstall the muffler out of order.
When you get down to the engine, you will find the magneto unit on one end and fan disk on the other. You will need a small gear puller to remove each after you remove the nuts. Note that one nut is right hand thread and the other is left hand thread.
You're now down to the short block. See note below. Replace the old one with the new one and add all the parts back on in the reverse order that you took them off.
Take your time and make sure to keep everything organized and it's not too difficult, but will take 2 or more hours to disassemble and reassemble the blower. When I finished, I primed the carb, and it started on the third pull. This is better than when it was new!
NOTE: the short block appears to be made for a number of different applications, and as such, there are mounting holes that are not used. Also, not all of the optional mounting holes are threaded. You will need a .9 metric tap to thread the one mount that attaches the engine to the top of the fan shroud.
After that, it's simply a matter of removing all of the pieces. You will need a #25 Torx bit and a hex wrench. Pay close attention to the order you remove things because you cannot always get to the screw if you do them out of order. For example, there is a mounting screw that cannot be reached if you reinstall the muffler out of order.
When you get down to the engine, you will find the magneto unit on one end and fan disk on the other. You will need a small gear puller to remove each after you remove the nuts. Note that one nut is right hand thread and the other is left hand thread.
You're now down to the short block. See note below. Replace the old one with the new one and add all the parts back on in the reverse order that you took them off.
Take your time and make sure to keep everything organized and it's not too difficult, but will take 2 or more hours to disassemble and reassemble the blower. When I finished, I primed the carb, and it started on the third pull. This is better than when it was new!
NOTE: the short block appears to be made for a number of different applications, and as such, there are mounting holes that are not used. Also, not all of the optional mounting holes are threaded. You will need a .9 metric tap to thread the one mount that attaches the engine to the top of the fan shroud.
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Broken primer bulb, no air filter, old spark plug
marcello - December 10, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Blower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set
Remove the old primer from the air filter base
Remove the fuel lines from the old primer
Install the new primer and the fuel lines
Remove the air filter cover and place the new filter in
Remove the old spark.
Gap the new one at 0.025 and install it
Remove the fuel lines from the old primer
Install the new primer and the fuel lines
Remove the air filter cover and place the new filter in
Remove the old spark.
Gap the new one at 0.025 and install it
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Blower starter worn
Raymond - March 20, 2020
Tool Type
Blower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Power Drill, Socket set
Removed cover, removed starter assembly, installed new rope on starter and reinstalled starter
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Blower rope broke
Germaine - February 6, 2020
Tool Type
Blower
Difficulty
Medium
Time
1-2 hours
Tools Used
Power Drill
I removed old rope and pulley then added new parts also change spark plug
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Poor combustion
John - May 15, 2019
Tool Type
Blower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wrench Set
Remove air filter and carb. Clean off gasket. Replace all in proper order.
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Air filter
Ron - March 8, 2019
Tool Type
Blower
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Star driver
Parts Used
Removed air filter cover, replaced filter
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.broken rope
RAY - December 17, 2018
Tool Type
Blower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Socket set, Wrench Set
Parts Used
installed new rope.
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Gobi bp42 would not start
W - May 19, 2018
Tool Type
Blower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Nutdriver, T25 torx
No spark. Replaced coil,air filter and fuel filter.
.I used a piece of cardboard to set the coil gap but it clearly was too wide. Used a business card the second time and it was perfect.
.I used a piece of cardboard to set the coil gap but it clearly was too wide. Used a business card the second time and it was perfect.
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All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
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