Owner’s manual
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Where can I get long tractor parts?
If you mean long replacement parts (belts, blades, steering, deck hardware) for your Craftsman riding tractor model 917270920, we stock model-matched parts through the parts list for this tractor and the diagrams in the owner's manual. If you mean the Long brand of farm tractors, that is a different manufacturer and uses a different parts catalog.
Make sure “Long” means the right thing
Many customers use “long tractor parts” in two ways. Use this quick check:
- Craftsman model 917270920: you need parts by model number and deck/drive diagrams
- Long brand tractor (Long, UTB, Montana): you need parts by that tractor’s make and model
- Long attachments (W.R. Long): you need parts by attachment model and serial number
Common long parts we carry for Craftsman 917270920
For this Craftsman front-engine lawn tractor, the most common “long” items are belts, blades, and deck components. Examples available for this model include:
- Lawn tractor ground drive belt, 1/2 x 82-in 532140294
- Husqvarna lawn tractor mulching blade, 21-in 532134149
- Husqvarna lawn tractor mandrel assembly 532130794
- Vented mandrel shaft assembly 532137646
- Solenoid 532146154
Quick part type guide
| What you’re replacing | What to look up | Typical symptom |
|---|---|---|
| Ground drive belt | Drive belt routing and length | Tractor will not move or slips |
| Deck blade/mandrel parts | Mower deck diagram | Poor cut, vibration, loud deck noise |
| Starter electrical | Solenoid, key switch circuit | Clicks but no crank |
Why it matters
Ordering by the correct equipment identity prevents wrong-fit parts. Craftsman model 917270920 parts are selected by tractor and deck diagrams; “Long” brand tractor parts are selected by that tractor’s separate model and serial information.
Last updated: February 2026
What year is my Craftsman mower serial number lookup?
For a Craftsman 917270920 lawn tractor, the most reliable way to identify the build year is to use the product identification label information and match it to the date format shown in the owner's manual. Many Craftsman riding mowers use a 6-digit date code where the last two digits indicate the year.
Where to find the serial or date code
Check the product identification label on the tractor (commonly under the seat, on the frame near the rear wheels, or in the engine compartment area). In the owner's manual, the model number is listed as 917.270920, which helps you confirm you are decoding the correct machine.
Look for one of these on the label:
- A serial number (often longer, may include letters)
- A date code (often 6 digits)
- A manufacture date printed directly
How the common 6-digit date code is read
A widely used Craftsman-style date code is:
| Code position | Meaning | Example using 072811 |
|---|---|---|
| 1 to 2 | Month (MM) | 07 = July |
| 3 to 4 | Day (DD) | 28 = 28th |
| 5 to 6 | Year (YY) | 11 = 2011 |
So a code like 072811 reads as July 28, 2011.
Quick checks to avoid decoding the wrong number
Before you decide the year, we recommend these quick checks:
- Confirm the label shows model 917270920 (or 917.270920) so you are using the right tractor family.
- Make sure you are reading a date code, not a part number from a decal or component.
- If the number includes letters or is longer than 6 digits, treat it as a serial number and use the manual’s identification section to confirm what each field represents.
Why it matters
Knowing the correct year helps you match the right parts and diagrams for your mower deck, drive system, and electrical components. For example, the correct deck parts list for this model includes items like the husqvarna lawn tractor mulching blade, 21-in 532134149 and the husqvarna lawn tractor mandrel assembly 532130794.
Last updated: February 2026
What engine does Craftsman riding mower use?
The Craftsman riding lawn tractor model 917270920 uses a 19.5 HP gas engine (electric start) as shown in the product specifications section of the owner's manual.
How to confirm the engine details on your tractor
Use these quick checks to match what you have to the correct parts and tune-up specs:
- Verify the model tag shows 917270920.
- Check the engine shroud or valve cover for the engine brand and model (often a sticker or stamped plate).
- Match spark plug type and gap to the manual specs.
- Confirm oil type by temperature range (warm vs. below freezing).
- Use the manual maintenance schedule so the engine stays easy-starting.
Key engine-related specs (from the manual)
These specs help with routine maintenance and starting performance.
| Item | Spec for 917270920 |
|---|---|
| Engine output | 19.5 HP |
| Starting | Electric start |
| Fuel capacity | 3.5 gallons, unleaded regular |
| Oil type | SAE 30 (above 32°F), SAE 5W-30 (below 32°F) |
| Spark plug | Champion RJ19LM or J19LM, gap 0.030 in |
Why it matters
The correct engine specs affect starting, charging, and cut quality. For example, running at full throttle improves mowing performance and helps the battery charging rate, and using the right oil viscosity helps protect the engine in hot or cold weather.
Related parts you may replace during maintenance
If you are servicing the mower deck while doing engine maintenance, these common wear items are often replaced together:
- Husqvarna lawn tractor mulching blade, 21-in 532134149 (blade condition affects cut quality)
- Lawn tractor ground drive belt, 1/2 x 82-in 532140294 (worn belts can reduce drive performance)
- Solenoid 532146154 (a common cause of click-no-crank symptoms)
Last updated: February 2026
How much does it cost to replace a riding lawn mower engine?
For a Craftsman riding lawn tractor like model 917270920, a full engine replacement typically runs about $800 to $2,500 installed (engine plus labor). The total depends on engine type, whether the replacement is new or rebuilt, and how much related work is needed during the swap.
What drives the total cost
- Engine price: New engines usually cost more than rebuilt or used engines.
- Labor time: Engine swaps on riding tractors commonly take 4 to 8 hours depending on access, rusted fasteners, and wiring.
- Extra parts discovered during removal: Belts, pulleys, wiring, and hardware often need attention once the engine is out.
- Tune-up and fuel system cleanup: Old fuel, clogged filters, and carburetor issues can add time.
- Pickup and delivery or on-site service: Service logistics can add a trip charge.
Typical cost ranges (parts and labor)
| Scenario | What’s included | Typical total |
|---|---|---|
| Repair instead of replace | Tune-up, fuel cleanup, basic electrical checks | $150 to $600 |
| Rebuilt/used engine installed | Engine swap plus basic setup | $600 to $1,800 |
| New engine installed | Engine swap plus setup and testing | $800 to $2,500 |
Before you replace the engine, check these common “no start” causes
Many tractors get replaced engines when the real issue is starting or safety interlock related. We recommend checking:
- Battery condition and cable connections
- Starter circuit and solenoid operation (a weak solenoid can click but not crank)
- Safety interlock switches (seat switch, brake/clutch switch, PTO/attachment clutch switch)
- Fuel quality and fuel delivery (old gas, clogged filter)
- Spark plug and ignition
If you suspect a starting circuit issue, the DIY steps in riding lawn mower engine clicks but doesnt turn over video help narrow it down.
Why it matters
An engine replacement is one of the highest-cost repairs on a riding mower. A quick diagnosis first helps you avoid paying for an engine when a solenoid, wiring issue, or safety switch is the real problem. For model-specific safety and maintenance guidance, use the owner's manual.
Last updated: February 2026
Is it worth replacing a lawn mower engine?
Yes; replacing the engine on your Craftsman front-engine lawn tractor model 917270920 is worth it when the deck, steering, and drive system are solid and you want several more seasons of dependable mowing. It is not worth it when multiple major systems are worn and the total repair cost is close to a replacement tractor.
Quick decision checklist
- Replace the engine if the mower deck is straight (not rusted through) and cuts well after basic service.
- Replace the engine if it drives smoothly and the ground drive belt and pulleys are in good shape.
- Replace the engine if the safety interlock system works correctly (seat and clutch/brake functions).
- Replace the tractor if the deck is damaged, mandrels are noisy, or the deck vents are packed with debris repeatedly.
- Replace the tractor if you also need several big repairs at once (steering gear, tires, deck housing).
What to inspect first on model 917270920
Use the owner's manual as your baseline and check:
- Deck and blades: Correct blade orientation and tight hardware; the manual specifies 27 to 35 ft-lbs blade bolt torque.
- Mandrel and deck airflow: Clean built-up grass and trash around mandrels and under the housing after mowing.
- Drive symptoms: A worn belt can mimic transmission problems; confirm belt condition before blaming the engine.
Cost and value comparison
| Factor | Engine replacement | Replacement tractor |
|---|---|---|
| Best when | Most systems are strong | Multiple systems are worn |
| Typical outcome | Restores reliability | Fewer near-term repairs |
| Time | DIY project time | Fast return to mowing |
Parts that commonly come up in the same decision
- Lawn tractor ground drive belt, 1/2 x 82-in 532140294
- Solenoid 532146154
- Husqvarna lawn tractor mulching blade, 21-in 532134149
Why it matters
An engine swap only pays off when the tractor is already safe and mechanically sound; otherwise, you replace the engine and immediately chase deck, belt, or interlock repairs.
Last updated: February 2026
