Ryobi
Gas Line Trimmer

Model #765R Official Ryobi line trimmer

Here are the diagrams and repair parts for Ryobi 765R line trimmer, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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

Owner’s manual

    Showing 10 of 74 parts

    Line Trimmer Primer Bulb and Hose Assembly#11

    Fuel tank/flywheel/crankcase Diagram

    Primer

    Part #791-181558
    Replaced by #791-683974B
    ?
    Manufacturer substitution
    This part replaces 791-181558. Substitute parts can look different from the original.
    BEST SELLER
    In Stock
    $14.23 | 
    35% OFF 
    MSRP: $22.00
    Line Trimmer Fuel Line#19

    Fuel tank/flywheel/crankcase Diagram

    Fuel line

    Part #791-181168
    Replaced by #791-181086
    ?
    Manufacturer substitution
    This part replaces 791-181168. Substitute parts can look different from the original.
    BEST SELLER
    This item is not returnable
    In Stock
    $4.55 | 
    38% OFF 
    MSRP: $7.30
    Line Trimmer Fuel Line Assembly#20

    Fuel tank/flywheel/crankcase Diagram

    Fuel line

    Part #791-682039
    Replaced by #791-682039
    ?
    Manufacturer substitution
    This part replaces 791-682039. Substitute parts can look different from the original.
    BEST SELLER
    This item is not returnable
    In Stock
    $13.49 | 
    16% OFF 
    MSRP: $16.00
    Line Trimmer Spool Spring#17

    Driveshaft/blade/throttle housing Diagram

    Spring

    Part #791-610317B
    Replaced by #791-610317B
    ?
    Manufacturer substitution
    This part replaces 791-610317B. Substitute parts can look different from the original.
    BEST SELLER
    In Stock
    $16.19 | 
    11% OFF 
    Phone Price: $18.19
    Line Trimmer Spool Retainer Clip#16

    Driveshaft/blade/throttle housing Diagram

    Retainer

    Part #791-610660
    Replaced by #791-610660
    ?
    Manufacturer substitution
    This part replaces 791-610660. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $7.39 | 
    12% OFF 
    Phone Price: $8.39
    Line Trimmer Throttle Trigger#3

    Driveshaft/blade/throttle housing Diagram

    Trigger

    Part #791-181556
    Replaced by #791-181807
    ?
    Manufacturer substitution
    This part replaces 791-181556. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $14.89 | 
    12% OFF 
    Phone Price: $16.89
    Tiller Clutch Cover Screw#34

    Fuel tank/flywheel/crankcase Diagram

    Screw

    Part #791-181345
    Replaced by #791-181345
    ?
    Manufacturer substitution
    This part replaces 791-181345. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $3.59 | 
    22% OFF 
    Phone Price: $4.59
    Lawn & Garden Equipment Engine Recoil Starter Rope#31

    Fuel tank/flywheel/crankcase Diagram

    Rope

    Part #791-613103
    Replaced by #791-613103
    ?
    Manufacturer substitution
    This part replaces 791-613103. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $15.39 | 
    12% OFF 
    Phone Price: $17.39
    Line Trimmer Engine Flywheel#23

    Fuel tank/flywheel/crankcase Diagram

    Flywheel

    Part #791-182736
    Replaced by #753-05240
    ?
    Manufacturer substitution
    This part replaces 791-182736. Substitute parts can look different from the original.
    In Stock
    $89.89 | 
    5% OFF 
    Phone Price: $94.89
    Lawn & Garden Equipment Carburetor Rebuild Kit

    #NI02

    All parts Diagram

    Repair kit

    Part #791-180090
    Replaced by #791-180090
    ?
    Manufacturer substitution
    This part replaces 791-180090. Substitute parts can look different from the original.
    In Stock
    $58.57

    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.