Owner’s manual
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What engine does Craftsman riding mower use?
The Craftsman riding mower model 917270830 uses a 20.5 HP gas engine (electric start) as shown in the model’s documentation. For the exact engine make and service details (tune-up parts, adjustments, and specs), use the 917270830 owner's manual.
What we know for model 917270830
From the product documentation, this tractor is configured as:
- 20.5 HP engine with electric start
- 42-inch mower deck
- 6-speed transaxle
- Designed for routine maintenance items like spark plugs, belts, and blades
Engine-related specs you can use for maintenance
These specs help when doing an oil change or tune-up:
- Fuel: Unleaded regular, 3.5-gallon capacity
- Oil type: SAE 30 (above 32°F), SAE 5W-30 (below 32°F)
- Oil capacity: 3.0 pints
- Spark plug: Champion RJ19LM (gap 0.030 in.)
| Item | Spec (model 917270830) |
|---|---|
| Engine output | 20.5 HP |
| Start type | Electric start |
| Deck size | 42 in. |
| Transmission | 6-speed transaxle |
Why the engine make can vary (and what to check)
On riding mowers, the horsepower and tractor model are the most reliable identifiers for maintenance and parts lookup. The engine manufacturer and exact engine model are typically confirmed by the engine ID label on the blower housing or valve cover; the 917270830 owner's manual shows where to find key identification and how to maintain the tractor.
Parts that commonly relate to engine performance
If the tractor cranks slowly, clicks, or will not start, the starting circuit is a common place to begin. For this model, a frequently replaced electrical part is the solenoid 532146154.
- Battery connections and ground cable condition
- Starter solenoid operation
- Safety interlock switches (brake, PTO, seat)
- Fuel freshness and air filter condition
Last updated: February 2026
Do Craftsman mowers use Briggs and Stratton engines?
Yes, many Craftsman mowers and lawn tractors use Briggs & Stratton engines; it depends on the specific model. For Craftsman lawn tractor model 917270830, the owner's manual lists a Briggs & Stratton engine model 461707 (type 0145-E1).
How to tell what engine your Craftsman has
The fastest way is to match the engine information on the tractor to the documentation.
- Check the engine shroud or valve cover for the engine brand (Briggs & Stratton, Kohler, etc.)
- Find the engine model and type code stamped on the engine (often near the valve cover or blower housing)
- Compare those numbers to the engine listing in the owner's manual
- Use your tractor model number (917270830) when ordering parts to avoid mismatches
What the manual confirms for model 917270830
For this specific Craftsman tractor, the manual identifies the engine as Briggs & Stratton and provides the engine model and type.
| Item | What to look for | What we see for 917270830 |
|---|---|---|
| Tractor model | Model tag on frame | 917270830 |
| Engine brand | Label on engine | Briggs & Stratton |
| Engine model/type | Stamped/printed on engine | 461707, type 0145-E1 |
Why it matters
Engine brand and model determine the correct tune-up parts and service procedures (spark plug, air filter, carburetor kit, starter components). Using the exact engine model and type also helps you avoid ordering the wrong parts for fuel, ignition, or governor systems.
Last updated: February 2026
Who makes Craftsman engines?
Craftsman engines are made by several manufacturers, depending on the specific tractor or mower model and production year. For the Craftsman lawn tractor model 917270830, the equipment is built around a Briggs & Stratton engine (the manual references B&S labeling/decals and this tractor’s 20.5 HP configuration). See the owner's manual for the exact engine identification details used on your unit.
What you’ll see on the tractor (quick ways to confirm)
- Look for an engine brand badge on the blower housing (top/front of the engine).
- Check the engine ID label (model, type, code) near the valve cover or recoil area.
- Review the hood and dash decal references in the documentation (often labeled B&S on this model).
- Match the engine information to the maintenance specs (spark plug type, oil capacity, etc.).
Common Craftsman engine suppliers (by product line)
Craftsman has used multiple engine suppliers across different mower families and years. The most common names you’ll run into include:
- Briggs & Stratton (very common on many Craftsman riding mowers)
- Kohler (common on some mid to higher-end riders)
- Kawasaki (often used on higher-end or performance-focused models)
Why the engine maker matters
Knowing who made the engine helps you get the right tune-up parts and service specs (oil type, spark plug, valve clearance, and charging system output). It also helps when diagnosing no-start or clicking-start issues.
Key specs shown for model 917270830
| Spec | Value |
|---|---|
| Engine output (tractor configuration) | 20.5 HP |
| Oil capacity | 3.0 pints |
| Spark plug | Champion RJ19LM (gap 0.030 in.) |
| Fuel capacity | 3.5 gallons (unleaded regular) |
Related repair help
If you’re troubleshooting starting problems that can be confused with “engine issues,” use our step-by-step video: riding lawn mower engine clicks but doesnt turn over video.
Last updated: February 2026
How much does it cost to replace a riding lawn mower engine?
For a Craftsman riding lawn tractor like model 917270830, a full engine replacement typically runs $800 to $2,500 installed (engine, small parts, and labor). Cost depends most on engine type, whether the crankshaft matches your pulleys, and how much deck and wiring work is needed.
What drives the total cost
- Engine price: Most replacement riding-mower engines land around $500 to $1,800.
- Labor time: Commonly 4 to 8 hours for a riding tractor engine swap.
- Extra parts: Belts, pulleys, hardware, fuel line, and electrical items often add $50 to $300.
- Deck removal time: Many tractors require removing the mower deck to access the engine pulley and belt routing.
- Condition of existing parts: Rusted fasteners, worn pulleys, or damaged wiring increases labor.
Typical cost ranges (installed)
| Scenario | What’s included | Typical total |
|---|---|---|
| Budget repair | Used or basic replacement engine, minimal extras | $800 to $1,400 |
| Most common | New engine, new belts/hardware as needed | $1,200 to $2,000 |
| Higher-end | Premium engine plus multiple worn drive/deck parts | $1,800 to $2,500 |
Parts that commonly get replaced during an engine swap
If your old engine failed violently (thrown belt, bent pulley, heavy vibration), these deck and drive items are often inspected and replaced at the same time:
- Lawn tractor drive belt 532144200 (blade drive belt)
- Engine pulley 532140186
- Solenoid 532146154 (starting circuit issues can mimic engine problems)
- Lawn tractor blade idler pulley 532139245
Why it matters
An engine replacement only pays off when the rest of the tractor is solid. If the deck drive system is worn (belt, idler pulley, mandrels), you can end up with poor cutting or repeated belt failures even after installing a new engine.
Before you commit: quick checks that can save money
We recommend ruling out common “no-start” or “won’t crank” problems first:
- Verify the operator presence and interlock system works (seat switch, brake/clutch switch, PTO disengaged).
- Check battery cables and grounds; a weak connection can cause clicking.
- Confirm the engine actually turns by hand (with spark plug wire disconnected).
- Review starting diagnostics in the owner's manual.
- If it only clicks, follow riding lawn mower engine clicks but doesnt turn over video.
Last updated: February 2026
