An Exmark 708cc engine typically costs about $1,400-$2,400 for the engine alone, while a shop-installed replacement often totals $2,000-$3,500. The exact price depends on the mower model, engine configuration, parts availability, labor rate, and whether the job includes belts, fluids, or other repairs.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Replacement engine | $1,400 | $1,900 | $2,400 | Engine assembly, before installation |
| Shop labor | $400 | $700 | $1,100 | About 4-8 hours, depending on access |
| Installed replacement | $2,000 | $2,700 | $3,500 | May include basic fluids and setup |
| Diagnostic service | $75 | $125 | $200 | May be credited toward repair |
What a 708cc Exmark engine replacement usually costs
For a common 708cc, twin-cylinder mower engine, budget roughly $1,400-$2,400 for the engine and $2,000-$3,500 for a complete shop replacement. These estimates assume a standard residential or commercial zero-turn mower, a compatible engine, normal access, and no major damage to the mower’s frame or electrical system.
Online listings and dealer quotes can differ because an engine may be sold as a bare assembly or supplied with different controls, exhaust parts, charging components, or mounting hardware. Confirm the mower model and engine specification before comparing prices. A 708cc displacement alone does not establish fit or whether the quoted engine is an exact replacement.
Assumptions: U.S. pricing, standard replacement parts, ordinary shop access, and no unusual freight or code-related charges.
How engine, labor, and shop charges shape the quote
A replacement quote combines the engine with removal, installation, setup, and any parts that cannot be reused. Ask whether the written estimate includes disposal of the old engine, oil, filters, and tax; these items may be listed separately.
| Quote item | Typical price | What changes the charge |
|---|---|---|
| 708cc engine assembly | $1,400-$2,400 | Brand, configuration, warranty, availability |
| Removal and installation labor | $400-$1,100 | 4-8 hours at about $100-$140 per hour |
| Fluids, filter, and small parts | $50-$180 | Oil, filter, fuel line, fittings, hardware |
| Freight or delivery | $50-$250 | Shipping distance and engine weight |
| Old-engine handling | $0-$100 | Shop policy and disposal method |
Labor is often the biggest variable after the engine itself. A clean swap may stay near the lower end, while seized fasteners, damaged wiring, or hard-to-reach mounting points add time.
Which mower specs can push the 708cc price higher?
Compatibility is the first price driver. A shop should match the engine’s shaft dimensions, rotation, mounting pattern, charging output, throttle and choke controls, and exhaust arrangement to the mower. A substitute engine that needs adapters or wiring changes can add parts and labor even when its displacement is also 708cc.
Scope matters as well. A mower with a damaged engine mount, a cut or brittle fuel line, or a charging-system fault may require additional work. If a quote adds more than $200-$400 in parts, request an itemized explanation and ask whether each part is necessary for a safe installation.
Verify the full engine model or part number, not just “708cc.” Mower model, serial number, and engine label help a dealer confirm the correct configuration and whether the price includes required components.
What installation labor includes and how long it takes
A straightforward engine swap commonly takes a mechanic 4-8 hours, including draining fluids, removing the old unit, transferring approved components, installing the replacement, and checking operation. At shop rates of roughly $100-$140 per hour, labor commonly falls around $400-$1,100.
Extra time may be needed if the mower must be transported, the engine is seized, or controls and wiring need repair. Shop scheduling can also add several days of calendar time during peak mowing season, though that delay does not necessarily increase the labor charge.
Have the shop separate labor hours from shop supplies and diagnostic fees. This makes it easier to compare an installation quote against another dealer’s estimate.
Repairing the original engine versus replacing it
Smaller faults can cost substantially less than an engine replacement. A carburetor clean or adjustment may run $100-$300, while ignition, charging, or fuel-system repairs can range from $150-$600 depending on parts and diagnosis. Internal damage, such as a failed crankshaft or severe cylinder wear, may make a full replacement more economical.
Ask for a diagnosis before authorizing a major repair. If the repair estimate approaches half the installed replacement price, compare the remaining life of the mower, the condition of its deck and transmission, and the warranty on the replacement engine.
Repair is usually worth pricing first when the problem is limited to fuel, ignition, or charging components. A confirmed internal failure is a stronger reason to compare replacement options.
How regional shop rates affect the installed price
Labor and freight can shift the total across the United States. Large metropolitan areas and regions with higher mechanic wages may price installation about 10%-20% above a national midrange estimate. Rural areas may have lower hourly rates but higher delivery charges or fewer nearby suppliers.
Seasonal demand also matters. During spring and early summer, repair shops may be booked out, and engine availability can vary by dealer. Getting a quote in the off-season may make scheduling easier, but the engine’s base price is still driven mainly by model, stock, and shipping.
Compare at least two local quotes using the same engine specification and included work. A lower headline price may exclude freight, setup, or disposal.
Three sample quotes for different 708cc engine jobs
| Scenario | Parts and scope | Labor | Estimated total |
|---|---|---|---|
| Owner-supplied engine | $1,500 engine, $100 fluids and hardware | 5 hours at $110 per hour | $2,150 |
| Dealer-supplied standard swap | $1,900 engine, $150 supplies and freight | 6 hours at $120 per hour | $2,770 |
| Higher-cost installation | $2,350 engine, $300 freight and added parts | 8 hours at $135 per hour | $3,730 |
These examples exclude sales tax and assume the mower does not need major electrical or structural repair. Dealer-supplied parts may carry a different warranty than an engine purchased independently.
How to lower the replacement bill without cutting corners
Use the mower’s model and serial numbers to request an exact-fit quote, then compare the engine part number, warranty, freight, and labor scope. If supplying the engine yourself, confirm in writing that the shop will install customer-provided parts and ask whether that affects its labor warranty.
Reuse serviceable parts only when the mechanic confirms they are compatible and safe. Avoid paying for unrelated tune-ups or upgrades unless they address a documented problem. If the mower is already at a shop, bundling necessary maintenance with the engine installation may reduce duplicate diagnostic or setup charges.
The most reliable savings come from accurate fitment and an itemized quote, not choosing an unverified low-cost engine.