Ryobi
Gas Line Trimmer

Model #RY30951 Official Ryobi trimmer

Here are the diagrams and repair parts for Ryobi RY30951 trimmer, as well as links to manuals and error code tables, if available.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

    Showing 10 of 116 parts

    Line Trimmer Gearbox#7

    Guard/spring head-ry30570 Diagram

    Head gear

    Part #308210001
    Replaced by #308210008
    ?
    Manufacturer substitution
    This part replaces 308210001. Substitute parts can look different from the original.
    In Stock
    $48.09 | 
    9% OFF 
    Phone Price: $53.09
    Clamp#23

    Upper boom/front handle Diagram

    Handle bar

    Part #638014001
    Replaced by #099075001007
    ?
    Manufacturer substitution
    This part replaces 638014001. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $3.05
    Lawn & Garden Equipment Engine Spark Plug#7

    Upper boom/front handle Diagram

    Spark plug

    Part #870174001
    Replaced by #RCJ6Y
    ?
    Manufacturer substitution
    This part replaces 870174001. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $2.59 | 
    61% OFF 
    MSRP: $6.60
    Nut 10-24#18

    Short block/rotor/fuel tank Diagram

    Nut 10-24

    Part #678027001

    The manufacturer no longer makes this part, and there's no substitute part

    Lock Washer#26

    Upper boom/front handle Diagram

    Lock washer

    Part #678012001

    The manufacturer no longer makes this part, and there's no substitute part

    Line Trimmer Attachment Blade Washer#14

    Guard/spring head-ry30570 Diagram

    Washer cu

    Part #638017001
    Replaced by #04409
    ?
    Manufacturer substitution
    This part replaces 638017001. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $2.49
    Pin#9

    Guard/spring head-ry30570 Diagram

    Holding pi

    Part #678020001
    Replaced by #099078001040
    ?
    Manufacturer substitution
    This part replaces 678020001. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $2.16
    Screw   1/

    See All Related Diagrams

    Screw 1/

    Part #660642001

    The manufacturer no longer makes this part, and there's no substitute part

    Line Trimmer Spacer#12

    Short block/rotor/fuel tank Diagram

    Line trimmer spacer

    Part #638284003

    The manufacturer no longer makes this part, and there's no substitute part

    Air Filter Base#19

    Short block/rotor/fuel tank Diagram

    Air filter base

    Part #518766001

    The manufacturer no longer makes this part, and there's no substitute part

    Symptoms for gas line trimmers

    Choose a symptom to see related grass line trimmer repairs.

    Main causes: cracked fuel lines, bad carburetor seals, leaky fuel tank cap, damaged fuel tank
    Main causes: stale fuel, cracked fuel lines, dirty carburetor, bad spark plug, worn piston rings
    Main causes: stale fuel, clogged fuel filter, faulty spark plug, clogged air filter, cracked fuel lines, clogged carburetor

    Repair guides for gas line trimmers

    These step-by-step repair guides will help you safely fix what’s broken on your grass line trimmer.

    October 1, 2013
    By Lyle Weischwill
    How to rebuild a line trimmer carburetor

    If the line trimmer engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow these instructions to do the job in under 30 minutes.

    Repair difficulty
    Time required
     15 minutes or less
    October 1, 2013
    By Lyle Weischwill
    How to replace a line trimmer carburetor

    If the line trimmer won't start even though there's fuel in the tank, the carburetor could be the problem. Follow these instructions to replace the carburetor in under 30 minutes.

    Repair difficulty
    Time required
     15 minutes or less
    October 1, 2013
    By Lyle Weischwill
    How to replace a line trimmer fuel line

    The fuel line on a grass line trimmer deteriorates with time and eventually can split or crack. You can replace it yourself, following these instructions.

    Repair difficulty
    Time required
     15 minutes or less

    Articles and videos for gas line trimmers

    Use the advice and tips in these articles and videos to get the most out of your grass line trimmer.

    August 30, 2022

    How to enjoy all the online benefits we offer on our Sears PartsDirect website

    By Lyle Weischwill

    Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.

    June 1, 2016

    Tips for a hard-to-start grass line trimmer

    By Lyle Weischwill

    These tips may help you get your hard-to-start gas line trimmer running.

    March 1, 2016

    Grass line trimmer maintenance checklist

    By Lyle Weischwill

    Find out how to take care of your grass line trimmer from the start of the trimming season until the end, with this helpful maintenance checklist.