How much does it cost to replace a riding lawn mower engine?
For a Craftsman lawn tractor model 917270710, a full engine replacement typically runs $800 to $2,500 installed (engine plus labor). The total depends on the exact engine spec, whether you replace related wear items, and local shop labor rates; confirm your engine details in the 917270710 owner's manual.
What drives the total cost
- Engine type and horsepower (exact replacement vs. repower kit)
- Labor time (removal, wiring, throttle/choke setup, belt and pulley alignment)
- Extra parts often replaced at the same time (belts, pulleys, hardware)
- Shop fees (pickup/delivery, disposal, diagnostics)
- Condition of the tractor (rusted fasteners, damaged wiring, worn deck spindles)
Typical price breakdown (installed)
| Cost item | Typical range | Notes |
|---|---|---|
| Replacement engine | $500 to $1,900 | Biggest variable; exact match costs more |
| Labor | $300 to $900 | Commonly 3 to 6 hours depending on complexity |
| Misc. parts and supplies | $25 to $200 | Fuel line, clamps, oil, filter, hardware |
| Total installed | $800 to $2,500 | Most common real-world range |
When replacement makes sense vs. repair
Engine replacement is usually the right call when the engine has low compression, severe internal noise, thrown rod, or repeated overheating damage. If the engine still cranks and runs poorly, a tune-up and fuel system service can be far cheaper.
Quick checks that can save money first
- Verify the engine is not overheating from clogged cooling fins (cleaning is routine maintenance)
- Replace the spark plug if it is due (often every 100 hours/season)
- Replace a clogged in-line fuel filter if fuel flow is restricted
- Confirm safety interlocks and starting circuit basics before condemning the engine
Why it matters
An engine swap is one of the highest-cost repairs on a riding mower. Pricing it correctly up front helps you decide whether to invest in the tractor, or put that money toward a newer machine with a warranty and updated features.
Last updated: February 2026
How to look up Craftsman model number?
On the Craftsman lawn tractor model 917270710, we find the model number and serial number on the tractor’s frame under the seat area; on many units it’s also printed on the underside of the seat itself. Use that exact model number to match the correct parts list and owner's manual.
Where to check on the tractor
Look in these common spots first:
- Frame under the seat (most common location)
- Underside of the seat pan
- Rear frame area near the hitch plate (sometimes)
- Fender or frame rail near the battery tray (sometimes)
How to record it correctly
Write the information exactly as shown on the tag so parts and diagrams match.
- Copy every digit and punctuation (for example, 917.270710 vs 917270710)
- Record the serial number too; it helps confirm production variations
- If the tag is dirty, wipe it with a damp rag and mild cleaner (avoid soaking the label)
- Take a clear photo before the label fades further
Why it matters
Craftsman tractors often share similar looks across years, but belts, blades, and deck parts can differ by model series. Using the correct model number helps us match the right diagrams and parts the first time.
Quick examples (what you might see)
| What you see on the tag | What it means | What to do |
|---|---|---|
| 917.270710 | Model number format with a dot | Use it to look up parts and specs |
| Serial number (varies) | Production identifier | Keep it for service and parts verification |
Last updated: February 2026
What brand engine does Craftsman use?
Craftsman uses engines from several manufacturers across its lawn tractor lineup. For Craftsman model 917270710, the tractor is equipped with a Briggs & Stratton engine; use the engine’s model and type numbers (on the engine shroud) to match the correct tune-up parts and service specs in the 917270710 owner's manual.
How to confirm the engine brand and exact engine model
Even when the brand is known, the engine model and type numbers are what ensure you get the right air filter, spark plug, and carburetor parts.
- Park on level ground, set the parking brake, and remove the key.
- Let the engine cool completely.
- Lift the hood and locate the engine ID label on the blower housing or valve cover.
- Write down the engine model, type, and code.
- Use those numbers when ordering engine-specific maintenance parts.
Common Craftsman engine brands you may see
Craftsman tractors and riding mowers commonly use these engine brands depending on model and year.
| Brand | Where you’ll see it most often | What to use for parts matching |
|---|---|---|
| Briggs & Stratton | Many Craftsman lawn tractors | Engine model and type numbers |
| Kohler | Some mid to higher HP tractors | Spec number and serial |
| Kawasaki | Some premium models | Model and spec code |
Why it matters
Ordering by tractor model alone can lead to the wrong ignition or fuel-system parts. Matching parts to the engine ID prevents hard starting, poor performance, and repeat repairs.
Last updated: February 2026
What engine oil for Craftsman lawn mower?
For the Craftsman 917270710 front-engine lawn tractor, use SAE 30 4-cycle engine oil when temperatures are above 32°F and SAE 5W-30 when temperatures are below 32°F. Fill to the dipstick full mark; the 917270710 owner's manual lists an oil capacity of 3.0 pints.
Recommended oil by temperature
Match viscosity to the season for easier starting and better protection:
- Above 32°F: SAE 30 (API SF/SG/SH)
- Below 32°F: SAE 5W-30 (API SF/SG/SH)
- Use 4-cycle engine oil (not 2-cycle mix)
- Check oil level before each use, especially during hot-weather mowing
How to fill and check oil correctly
Use this routine to avoid overfilling and oil-related smoking:
- Park on level ground and shut the engine off
- Let the engine cool a few minutes
- Remove dipstick, wipe clean, reinstall fully, then recheck
- Add oil in small amounts and recheck often
- Stop at the FULL mark; do not fill above it
Specs at a glance
| Item | Craftsman 917270710 specification |
|---|---|
| Oil type above 32°F | SAE 30 (API SF/SG/SH) |
| Oil type below 32°F | SAE 5W-30 (API SF/SG/SH) |
| Oil capacity | 3.0 pints |
Why it matters
Using the correct viscosity helps the engine lubricate properly as temperatures change. Filling to the correct level prevents hard starting, smoking, and power loss caused by low oil or overfilled crankcase.
Last updated: February 2026
What would cause a Craftsman lawn mower not to start?
On the Craftsman lawn tractor model 917270710, a no-start is usually caused by a weak battery or bad cable connection, a blown fuse, a safety interlock not being satisfied (seat, brake, PTO), or an ignition/starting component issue such as the solenoid, starter, or ignition switch. Use the 917270710 owner's manual troubleshooting chart to narrow it down fast.
Quick checks we recommend first
- Make sure the clutch/brake pedal is fully depressed.
- Make sure the attachment clutch (PTO) is disengaged.
- Check the battery charge; recharge or replace if weak.
- Clean and tighten battery terminals and cable ends.
- Check the fuse and inspect wiring for loose or damaged connections.
What the symptom tells you
| What you hear/see | Most likely causes | What to do next |
|---|---|---|
| Engine clicks but will not start | Weak battery, dirty terminals, loose/damaged wiring, faulty solenoid or starter | Charge battery, clean terminals, then test solenoid/starter |
| Engine cranks but won’t start | Stale fuel, dirty air filter, fouled spark plug, fuel delivery issue | Replace fuel, service air filter, inspect spark plug |
| Starts then dies when you release the brake | Safety interlock circuit issue | Check seat/brake switch operation |
Common causes (and the fix)
- Battery or connections: A low battery or corroded terminals can cause clicking or slow cranking; clean terminals and recharge/replace the battery.
- Blown fuse or wiring problem: A blown fuse or loose/damaged wiring can stop power from reaching the starter circuit.
- Faulty solenoid or starter: If the battery is good but it only clicks, the solenoid or starter is a top suspect.
- Ignition switch issue: A worn ignition switch can prevent the start circuit from energizing.
- Fuel and tune-up items: Old gas, a dirty air filter, or a bad spark plug can prevent starting even when it cranks.
Why it matters
Starting problems on a riding mower are often electrical and safety-interlock related. Checking the brake/PTO position and battery condition first prevents unnecessary parts replacement and gets you to the real failure point faster.
Last updated: February 2026
What year did Craftsman make the 917270710?
Craftsman model 917270710 is a specific lawn tractor configuration, but Craftsman model numbers do not map to one single “model year” the way cars do. The most accurate way to identify the year for your exact tractor is to use the identification information and documentation in the 917270710 owner's manual.
How to pinpoint the year for your exact 917270710
We use these checks because Craftsman tractors were often sold across multiple seasons with small running changes.
- Locate the model and serial number label (commonly under the seat, on the frame, or near the rear fender pan).
- Write down the serial number exactly as shown (letters and numbers).
- Compare the tractor’s configuration to the manual specs (engine HP, deck size, transmission type).
- Check for date codes on major components (engine tag, battery sticker, or wiring harness label).
- If the tractor has had major parts replaced (engine, transaxle, deck), rely on the frame serial number, not the replacement part.
What the manual tells us about this tractor (helps confirm you have the right model)
The documentation for 917270710 identifies it as a 17.0 HP, electric start, 42-inch mower, 6-speed transaxle lawn tractor. That combination helps confirm you are matching the correct manual and parts list to your machine.
| Item in documentation | What to look for on your tractor | Why it helps |
|---|---|---|
| 42-inch mower deck | Deck width and blade setup | Confirms deck family and parts fit |
| 6-speed transaxle | Shift pattern and lever | Separates gear-drive from hydro models |
| Electric start | Key switch start | Confirms electrical starting system |
Why it matters
Getting the correct “year” is mainly about getting the correct parts and adjustments. Even within the same model number family, belt routing, deck hardware, and steering components can vary by production run.
If you are ordering wear items for this tractor, match by model number and diagrams first; for example, the ground drive belt v-belt 532138255 is a common fitment-sensitive part where length and routing must match your exact setup.
Last updated: February 2026





