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McCulloch ROAD RUNNER II-11400128-25 trimmer Parts

Here are the diagrams and repair parts for McCulloch ROAD RUNNER II-11400128-25 trimmer, as well as links to manuals and error code tables, if available.

McCulloch ROAD RUNNER II-11400128-25 trimmer
By Schematic
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Browse Parts for ROAD RUNNER II-11400128-25 Line Trimmers

  • Cover for McCulloch ROAD RUNNER II-11400128-25 - Part 300064

    Starter housing assembly diagram

    Cover

    Part #300064

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

  • Part for McCulloch ROAD RUNNER II-11400128-25 - Part 224020

    Part

    Part #224020

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

  • "c" Ring for McCulloch ROAD RUNNER II-11400128-25 - Part N/P

    "c" Ring

    Part #N/P

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

  • Grip for McCulloch ROAD RUNNER II-11400128-25 - Part 322139

    Shaft/handle and cutter assemblies diagram

    Grip

    Part #322139

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

  • Screw for McCulloch ROAD RUNNER II-11400128-25 - Part 111053

    Screw

    Part #111053

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

  • Throttle Cable for McCulloch ROAD RUNNER II-11400128-25 - Part 300149

    Starter housing assembly diagram

    Throttle Cable

    Part #300149

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

  • Collar for McCulloch ROAD RUNNER II-11400128-25 - Part 224998

    Shaft/handle and cutter assemblies diagram

    Collar

    Part #224998

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

  • Button for McCulloch ROAD RUNNER II-11400128-25 - Part 222914

    Starter housing assembly diagram

    Button

    Part #222914

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

  • Nut for McCulloch ROAD RUNNER II-11400128-25 - Part 216682

    Shaft/handle and cutter assemblies diagram

    Nut

    Part #216682

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

  • Rope for McCulloch ROAD RUNNER II-11400128-25 - Part 300415

    Starter housing assembly diagram

    Rope

    Part #300415

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

McCulloch Trimmer ROAD RUNNER II-11400128-25 FAQs

Yes, .095-inch line can be used in a trimmer that normally runs .080-inch line only if the trimmer head, spool channels, and eyelets are sized for .095. On your Mcculloch ROAD trimmer, confirm the head’s approved line diameter first; thicker line increases load and can cause feed issues.

How to confirm .095 will work

Check the cutting head and guard for a stamped or printed line-size range; that is the correct spec to follow.

  • Look for a marking on the head, spool, or guard that lists supported diameters (for example, “.080” or “.080-.095”)
  • Thread a short piece of .095 through each eyelet by hand; it should slide freely
  • Inspect spool channels; narrow channels make .095 bind and stop bump-feed
  • Wind the line evenly and tightly without crossing wraps
  • Test for smooth bump-feed and stable RPM in light grass before heavy trimming
What changes when you go from .080 to .095
Line size Cutting strength Engine load Feed reliability
.080 in Good for light trimming Lower Usually smoother
.095 in Better for thicker weeds Higher More likely to bind if head is tight
When to switch back to .080

Use .080 if you notice any of these after installing .095.

  • The engine bogs down or stalls when you accelerate
  • Bump-feed becomes inconsistent or stops
  • The head vibrates because the line is not feeding evenly
  • Line repeatedly fuses, kinks, or jams on the spool
Why it matters

Line diameter directly affects cutting-head drag. If the head is designed around .080, .095 can overload the engine and prevent the spool from feeding, which reduces cut quality and increases wear.

For help confirming you have the exact model identification before matching specs, use how to find your appliance model number (and what it means for parts).

Last updated: February 2026

For the Mcculloch ROAD line trimmer, the standard 2-stroke fuel mix is 50:1 (gasoline to 2-cycle oil). That equals 2.6 fl oz of 2-cycle oil per 1 U.S. gallon of gas; use fresh, ethanol-free fuel when possible for easier starting and smoother running.

Quick mix chart (50:1)
Gasoline amount 2-cycle oil needed Metric equivalent
1 U.S. gallon 2.6 fl oz 76 ml
1/2 U.S. gallon 1.3 fl oz 38 ml
1 U.S. quart 0.64 fl oz 19 ml
1 liter 0.68 fl oz 20 ml
How we recommend mixing it
  • Use a clean, approved fuel can (not the trimmer tank) for measuring and mixing.
  • Add about half the gasoline first.
  • Measure the correct amount of 2-cycle oil and pour it in.
  • Add the remaining gasoline, then cap and shake to blend.
  • Fill the trimmer and wipe up any spills before starting.
Common symptoms of the wrong mix
  • Too little oil (lean oil mix): overheating, scoring, loss of compression, early engine failure
  • Too much oil (rich oil mix): heavy smoke, fouled spark plug, carbon buildup, poor throttle response
  • Old fuel: hard starting, surging, stalling at idle
Why it matters

A 2-stroke engine relies on the oil in the fuel for lubrication. Keeping a consistent 50:1 mix helps protect the piston and cylinder, reduces plug fouling, and keeps the carburetor and exhaust from loading up with deposits.

Helpful tip for finding the exact model label

If your trimmer’s tag shows more than one identifier (for example, a product number plus a model family name), match the full identifier before ordering parts or looking up specs. Our guide, how to find your appliance model number (and what it means for parts), shows where to look and what details matter.

Last updated: February 2026

A whipper snipper, snipper, and line trimmer are usually the same tool: a handheld trimmer that cuts grass and weeds with a spinning nylon line. For your Mcculloch trimmer model ROAD, the practical difference is typically just regional wording, not a different machine.

Quick definitions (what people mean)
  • Line trimmer: The most generic name; describes how it cuts (nylon line).
  • Whipper snipper: Common nickname (especially in Australia and New Zealand).
  • Snipper: Shortened slang for the same tool.
  • String trimmer / weed eater: Common U.S. terms for a line trimmer.
  • Brushcutter (different tool): Usually a heavier-duty unit that can run a metal blade.
How to tell if it is a line trimmer or a brushcutter

Use these checks before buying parts or accessories:

  • Cutting head: Line trimmers use a bump-feed or fixed-line head; brushcutters often accept a blade kit.
  • Shaft and gearbox: Brushcutters commonly have a stronger drive system for blade loads.
  • Engine size: Brushcutters are often higher displacement and built for thicker growth.
  • Handle style: Brushcutters frequently use bicycle-style handles for control.
Term you hear Usually means Typical use
Line trimmer Nylon line trimmer Lawn edges, light weeds
Whipper snipper / snipper Nylon line trimmer Same as above
Brushcutter Blade-capable cutter Thick weeds, brush
Why it matters

Using the right term helps you match the correct trimmer head, spool/line size, and guard style. It also prevents installing blade-type accessories on a unit that is designed only for nylon line.

Helpful next step for parts matching

If you are unsure whether your model number is complete, use our guide: how to find your appliance model number (and what it means for parts).

Last updated: February 2026

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