Small Engine Repair Costs: Complete Guide by Equipment Type

Small engine repair costs vary more than most people expect — not just because of regional labor rate differences, but because the same symptom (won't start, runs rough, surges) can mean a $40 fix or a $300 fix depending on what's actually wrong. This guide gives realistic price ranges for the most common repairs across the equipment types most homeowners own.

These are independent shop rates as of 2026. Authorized dealer service centers for specific brands may price differently. All estimates include parts and labor unless noted.

If you already have a quote in hand, run it through the repair-vs-replace calculator before authorizing work. If you are still trying to estimate the likely bill, the repair cost estimator is faster than scanning every category below.

Lawn mowers

Annual tune-up (plug, filter, oil, blade): $60–$100 Standard push mower. Self-propelled mowers run $80–$120 due to additional drive system inspection. Riding mowers run $100–$200.

Carburetor cleaning: $70–$130 Addresses soft varnish from one season of stale fuel. The most common repair on any mower brought in after winter storage.

Carburetor rebuild: $110–$180 When cleaning isn't enough — new diaphragm, needle, seat, and gaskets. Appropriate after multiple seasons of storage without fuel treatment.

Carburetor replacement: $130–$260 When the carburetor body itself is corroded or damaged beyond cleaning. Parts cost $25–$80 for common consumer engines.

Fuel line and primer bulb: $50–$90 Rubber fuel system components degrade from ethanol. Often done as a set when one shows degradation.

Recoil starter replacement: $50–$90 Pull cord assembly — spring or pawl failure.

Drive belt (self-propelled): $80–$130 More labor-intensive than it looks due to disassembly required.

Wheel gear replacement: $60–$110 Self-propelled wheel drive gears wear out on mowers with per-wheel drive.

Ignition coil: $90–$160 No-spark condition after new plug installed.

Valve service: $100–$200 Tight or burned valves — requires head access. At this cost on a consumer mower, evaluate repair vs. replace.

Blade sharpening and balance: $15–$25 per blade Riding mowers with 2-3 blades: $30–$70.

Deck belt (riding mower): $100–$180 Blade spindle bearing (riding mower): $120–$220 per spindle Transmission service (riding mower): $200–$600+

Generators

Annual tune-up (plug, filter, oil): $80–$130 Load test and full operational check adds $30–$50.

Carburetor cleaning: $90–$160 Generator carburetors varnish severely from long storage periods. Often more involved than mower carbs.

Carburetor rebuild: $130–$220 Carburetor replacement: $150–$300 Common on generators that have sat for multiple years.

Fuel valve replacement: $50–$90 Fuel shutoff valve leaks or fails to seal — common on older units.

Spark plug replacement (as standalone): $30–$50 Including labor. DIY cost is $5–$10 in parts.

Ignition coil: $100–$180

Voltage regulator: $100–$200 Output voltage issues — generator runs but doesn't produce correct voltage.

Automatic Voltage Regulator (AVR) on inverter generators: $120–$250

Starter battery (electric start): $50–$100 Including replacement and charging system test.

Starter motor: $100–$200 Electric start won't crank despite good battery.

Carburetor and full fuel system service (after multi-year storage): $200–$400 Comprehensive service when a generator hasn't run in 2+ years — covers lines, filter, carb rebuild, plug, and operational test.

If the generator starts but does not produce power, use the generator no-power diagnostic before assuming the engine needs work. Electrical output faults follow a different cost path than carburetor or fuel problems.

Snowblowers

Pre-season tune-up: $80–$150 Comprehensive service before the season: plug, filter, oil, belts inspected, shear bolts checked, cables adjusted, full operational test.

Carburetor cleaning: $80–$140 Carburetor rebuild: $120–$200

Auger belt replacement: $90–$160 Belt that drives the auger flights.

Drive belt replacement: $90–$160 Belt that drives the wheels.

Shear bolt replacement: $20–$40 Parts are $5-10; this is mostly labor for the diagnosis and confirmation.

Auger cable or drive cable replacement: $60–$110 Auger gearbox service or replacement: $150–$350 Rare but expensive — the gearbox is what shear bolts are designed to protect.

Impeller replacement: $120–$250 The impeller that throws snow through the chute. Damaged from ice or debris.

Chute motor (electric chute rotation): $100–$200 Electric chute rotation systems fail on mid-range and higher snowblowers.

Skid shoe and scraper bar replacement: $60–$120 Wear items on the bottom of the auger housing. Annual inspection recommended.

If the engine runs but the auger does not engage, the snowblower auger diagnostic helps separate cheap shear-bolt failures from belt, cable, and gearbox repairs.

Chainsaws

Tune-up (plug, filter, chain sharpen, bar service): $60–$120 Consumer saw. Professional saws run $100–$150.

Carburetor cleaning: $70–$130 Carburetor rebuild: $90–$160 Two-cycle diaphragm carbs have different rebuild components than four-cycle float carbs.

Fuel line and primer bulb replacement: $50–$90 Very common on saws that have been stored.

Chain replacement: $30–$60 Parts only if you supply — shop sourced and installed runs $50–$80.

Bar replacement: $60–$120 Parts ($30–$70) plus labor.

Recoil starter: $50–$90

Ignition coil: $90–$160

Chain brake service or replacement: $80–$160 Safety-critical component. Don't defer this repair.

Clutch replacement: $100–$180

Crankshaft seal replacement: $150–$300 Oil leaks from the crankcase. Significant labor on two-cycle engines.

If the engine runs but the chain does not move, start with the chainsaw chain diagnostic. It catches the no-cost checks first: brake position, chain tension, bar groove debris, and visible chain damage.

Pressure washers

Tune-up (plug, filter, oil if four-cycle): $70–$120

Carburetor cleaning: $80–$140 Carburetor rebuild: $110–$180

Fuel line replacement: $50–$90

Pump seal kit installation: $100–$200 Water leaking from pump — seal kit resolves most pump leaks.

Unloader valve replacement: $80–$150 Pressure cycling or relief valve noise.

Thermal relief valve replacement: $60–$110

Pump replacement: $200–$500+ When internal pump damage is beyond seal repair. Honda GX-series pumps are expensive to replace — a quality aftermarket pump is often the right call.

High-pressure hose replacement: $60–$120 Kinked or cracked hose.

If the pressure washer runs but has weak or no pressure, the pressure washer no-pressure diagnostic can prevent mixing up engine-side repairs with pump, nozzle, hose, or unloader-valve problems.

What drives costs up or down

Regional labor rates are the biggest variable. A repair that costs $120 in a small Midwest town may run $180 in a coastal metro where shop overhead is higher.

Diagnostic fee at most shops is $50–$80, typically credited toward the repair if you proceed. If you don't authorize the repair, you pay the diagnostic fee.

Parts sourcing time affects total cost indirectly. A part that's in stock gets the machine back to you in days. A back-ordered OEM part can add weeks and sometimes a second shop visit.

How long the machine sat determines whether a simple cleaning resolves the carburetor or whether a rebuild is needed. Honestly communicating the storage history to the shop saves diagnostic time.

Finding a shop

Most of these repairs are straightforward for any competent small engine shop. For brand-specific work — Stihl chainsaw, Honda generator, Husqvarna riding mower — an authorized service dealer has factory training and direct parts access. For general repairs and maintenance, a well-reviewed independent shop often provides faster turnaround and competitive pricing.

Use the directory search below to find verified small engine repair shops near you.

Prices reflect typical independent shop rates across the United States as of 2026. All estimates include parts and labor unless noted. Rates vary by region, shop, and equipment condition. Get a written estimate before authorizing work.