Lawn mowers break down at the worst times, especially during peak mowing season. Whether your mower won’t start, runs rough, only runs on choke, or has lost cutting power, we provide fast, affordable, and reliable repair services for both homeowners and small businesses.
Our team specializes in diagnosing fuel issues, carburetor blockages, old/bad gas, clogged jets, worn spark plugs, and mechanical wear. If your mower hasn’t been serviced in a while, we can bring it back to full strength.
If your lawn mower won’t start, only runs on choke, surges, or has lost cutting power, Mile High Small Engine Repair offers fast and reliable lawn mower repair throughout Denver and the surrounding areas. We specialize in small engine diagnostics, carburetor cleaning, tune-ups, blade sharpening, and restoring mowers that have been sitting all winter or running rough. Most common issues can be diagnosed and repaired quickly with same-day options available seasonally.
We repair issues on walk-behind mowers, self-propelled mowers, and riding mowers. Common problems include:
Won’t start / no-start issues
Runs only on choke
Surges up and down
Loses power under load
Won’t stay running
Pull cord won’t retract or is broken
Smoke from the engine
Uneven cutting
Blade not engaging
Excessive vibration
Fuel leaks or filter issues
If you’re unsure what the problem is, bring it in — we’ll diagnose it and walk you through your options.
Services include mobile engine tune-ups, repairs, and blade sharpening for most small engine yard equipment. Fast, affordable, and professional — we come to you!
A full tune-up is one of the best ways to restore power and performance. Colorado heat, dust, and bad gas cause buildup that can clog your carburetor and choke your engine.
Our lawn mower tune-ups include:
Carburetor cleaning
Oil change
Spark plug replacement
New air filter
Fuel system flush
Blade sharpening
Belt and cable inspection
RPM and idle adjustment
Complete performance testing
A tune-up typically fixes 70% of mower performance issues.
If your mower:
only runs on choke
won’t stay running
surges
dies under load
sat all winter
struggles after old gas
It almost always needs a carburetor cleaning.
We remove the carb, clean jets, remove debris, restore fuel flow, and reset the choke/throttle linkage. This is one of our fastest repairs and can often be completed same-day.
Proudly providing mobile small engine repairs and tune-ups in:
A mower can run fine but cut poorly.
If your lawn looks uneven or shredded, your blade is the culprit.
We offer:
Blade sharpening
Blade balancing
Blade replacement
Deck cleaning
Height and deck leveling
Self-propel belt adjustments
This helps restore a clean, even cut every time.
We understand mowing is time-sensitive. During peak season, our goal is to get your equipment back quickly.
Depending on workload and parts, we offer:
Same-day carburetor cleaning
Same-day tune-ups
Fast diagnostics
Next-day repairs for most issues
No outsourcing — everything is done in-house
Denver, Thornton, Northglenn, Westminster, Aurora, Commerce City, Lakewood, Arvada, Federal Heights, Brighton, and surrounding areas.
Mile High Small Engine Repair proudly serves the entire Denver Metro Area. While we do not maintain a walk-in storefront, we offer pickup, mobile diagnostics, and scheduled drop-offs throughout the region. Below is our primary service zone covering Denver and surrounding cities.
If you're within the Denver Metro Area and need lawn mower repair, snow blower repair, generator repair, or small engine diagnostics — we’ve got you covered.
Lawn mowers require regular service to run efficiently, and ignoring maintenance often leads to costly breakdowns. Our Denver lawn mower repair shop provides complete small engine care, starting with a full system diagnostic. We evaluate the carburetor, ignition system, fuel lines, compression, belts, blades, wheels, oil, air flow, and overall engine health.
If your mower runs rough, bogs down under load, emits smoke, or makes unusual noises, we pinpoint the problem and repair it quickly. We fix carburetor blockages, water contamination, stale fuel issues, damaged blades, bent crankshafts, traction problems, and more.
Our full tune-up package includes:
Complete carburetor cleaning
Fresh oil and filter
New spark plug
Blade sharpening and balancing
Fuel flush and treatment
Deck cleaning
Air filter replacement
Full safety inspection
We proudly serve the entire Denver Metro area with friendly service, fast turnaround, and expert repairs performed by trained small engine technicians.
We service most major brands, including:
Honda
Toro
Craftsman
Husqvarna
Briggs & Stratton
Troy-Bilt
MTD
Yard Machines
Ryobi
Cub Cadet
If it has a small gas engine, we can work on it.
Most no-start issues come from old fuel, a clogged carburetor, a bad spark plug, or a dirty air filter. These are fast, common fixes that we handle every day.
At least once per season. Annual tune-ups keep your mower starting reliably and cutting cleanly while preventing major engine problems later.
Yes — this almost always means your carburetor is clogged. A carb cleaning usually fixes the issue and restores normal running.
Yes. We sharpen, balance, replace blades, and perform deck cleaning and leveling for a clean, even cut every time.
In many cases, yes. Same-day carb cleaning, tune-ups, and simple repairs are available depending on workload and parts.
We proudly service the entire Denver Metro Area, including:
Denver, Thornton, Northglenn, Westminster, Commerce City, Aurora, Lakewood, Arvada, Brighton, Federal Heights, and surrounding communities.
For lawn mower or snow blower repairs, visit our dedicated service page: Denver Lawn Mower & Snow Blower Repair .
