Craftsman 917273070 lawn tractor Parts

Replacing the engine on your Craftsman lawn tractor model 917273070 is worth it when the tractor’s deck, steering, and drive system are still solid and you want more years of reliable mowing. If the tractor has widespread wear (deck rust-through, slipping drive, electrical issues), replacement usually costs more than it returns.

Quick decision checklist

• The mower deck is structurally sound (no cracks or rust holes)
• The transmission and ground drive work normally (no slipping or loss of pull)
• The wiring and safety interlock system operate correctly
• You can source the correct engine and any required mounting or pulley parts
• The total engine-swap cost stays well below the cost of a comparable replacement tractor

What to inspect on a 917273070 before you buy an engine

Use the 917273070 owner's manual to confirm safety and operating checks, then inspect these high-cost areas:

• Safety interlocks: The manual notes the engine should only start with the clutch/brake depressed and PTO disengaged; seat and parking brake interlocks should shut the engine off in specific conditions.
• Deck condition: Built-up grass and debris can cause poor performance; check for heavy corrosion and damage.
• Blade and mandrel area: The manual calls out keeping blades sharp and properly installed; inspect for wobble, noise, or damaged mandrels.
• Belts and PTO engagement: If the deck drive belt is worn, budget for replacement while you are already doing major work.

Cost and value comparison

Scenario	Typical outcome	Best choice
Deck and drive are strong; engine failure is the main issue	Engine swap restores full use	Replace engine
Multiple systems are worn (deck, drive, wiring, steering)	More repairs follow soon	Replace tractor
You need fast, predictable uptime	Less downtime with new unit	Replace tractor

Why it matters

An engine swap can be a smart investment, but only when the rest of the tractor is safe and mechanically sound. The manual’s emphasis on interlocks and safe servicing is important because a “running but unsafe” tractor is never a good value.

Last updated: February 2026

For the Craftsman lawn tractor model 917273070, use a high-quality detergent 4-cycle engine oil that meets API service classification SF, SG, or SH, and choose the SAE viscosity based on your expected outdoor temperature (per the oil viscosity guidance in the 917273070 owner's manual).

What to use (engine oil)

Use these rules to pick the right oil for your tractor’s engine:

• Use detergent 4-cycle engine oil (never 2-cycle oil)
• Look for API SF, SG, or SH on the bottle
• Match the SAE viscosity grade to the temperature you mow in (the manual’s viscosity chart is the best reference)
• Check oil level before starting and about every 8 hours of operation
• Change engine oil every 50 hours or at least once per year

Quick viscosity guidance (typical)

The exact chart varies by engine family, but most riding mower engines follow this pattern:

Outdoor temperature	Common SAE choice	Why it’s used
Cold weather	5W-30	Easier starting and faster lubrication
Warm to hot weather	SAE 30	Strong protection at higher temps
Mixed temperatures	10W-30	Good all-around option

For the exact recommendation for your tractor, follow the viscosity chart in the 917273070 owner's manual.

Don’t confuse engine oil with transaxle oil

This tractor also has a transaxle oil check procedure. If you are checking or topping off the transaxle, the manual specifies SAE 30 motor oil (API SF, SG, or SH) for the transaxle oil level check.

Why it matters

Using the correct oil type and viscosity helps your Craftsman 917273070 start easier, run cooler, and reduce internal engine wear. Following the 50-hour oil change interval also helps prevent sludge buildup and loss of lubrication.

Last updated: February 2026

For Craftsman lawn tractor model 917273070, the owner’s manual identifies it as a low-emission, electric-start tractor rated at 22.0 HP. For the exact engine manufacturer and model family (such as Briggs & Stratton or Kohler), match the engine ID label on your engine to the specifications in the 917273070 owner's manual.

How to identify the exact engine on your 917273070

We recommend using the engine’s ID tag because the same tractor model can be built with different engine variants.

• Turn the key off and let the engine cool completely
• Lift the hood and locate the engine ID label (often on the blower housing or valve cover area)
• Write down the engine model, type, and code (or spec number)
• Compare those numbers to the engine information section in the 917273070 owner's manual
• Use the engine ID when ordering tune-up parts (spark plug, air filter, fuel filter)

Quick spec snapshot (what we know from the manual)

Item	What to expect on 917273070
Starting system	Electric start
Power rating	22.0 HP
Emissions	Low-emission engine
Equipment type	Front-engine lawn tractor

Why it matters

The engine brand and exact model determine the correct maintenance parts and settings (oil type, spark plug gap, air filter style). Using the engine ID prevents ordering the wrong parts and helps troubleshooting issues like hard starting or poor performance.

Related parts you might see referenced

These are common tractor components you may encounter while servicing this model (not engine-specific), and they can help when you are doing general repairs:

• Molded ignition key 532140403 (starting and security)
• Switch 582107601 (PTO engagement for mower blades)
• Lawn tractor ignition harness 532170238 (wiring between key switch and electrical system)

Last updated: February 2026

For a Craftsman lawn tractor model 917273070, a full engine replacement typically costs about $800 to $3,000 installed, depending on the engine you choose, labor rates, and whether related items (belts, wiring, fuel lines) need attention. Use the 917273070 owner's manual to confirm your exact engine model and service notes before ordering parts.

What drives the total cost

• Engine price: new replacement engines commonly run $500 to $2,000+
• Labor time: most riding mower engine swaps take 4 to 8 hours
• Shop labor rate: often $90 to $160 per hour
• Extra parts and supplies: oil, filter, fuel filter, clamps, hardware, belts
• “While you’re in there” repairs: worn wiring, fuel tank fittings, PTO issues

Typical cost breakdown (installed)

Cost item	Typical range	Notes
Engine (new)	$500 to $2,000+	Varies by horsepower, shaft size, charging system
Labor	$360 to $1,280	4 to 8 hours at $90 to $160/hr
Fluids, filters, misc. parts	$40 to $200	Oil, filter, fuel filter, clamps, fasteners
Estimated total	$800 to $3,000	Most common real-world range

Before you replace the engine (quick checks)

Many “needs an engine” symptoms are caused by fuel, ignition, or safety circuits. We recommend checking these first:

• Battery condition and cable connections
• Starter solenoid and starter operation
• Fuel quality and fuel delivery (filter, lines, tank venting)
• Spark and ignition switch function
• Safety interlock switches (seat, brake, PTO)

If the engine clicks but won’t crank, follow riding lawn mower engine clicks but doesnt turn over video. If it cranks but won’t start, use riding lawn mower engine spins but wont start video.

Model-specific note for 917273070

Your manual identifies this tractor as using a Kohler engine (CV22S, type 75534) in the engine/ignition diagrams. That helps when matching the correct replacement engine and electrical connections. Refer to the 917273070 owner's manual for the exact configuration and maintenance schedule.

Why it matters

An engine swap is one of the highest-cost repairs on a riding mower. Confirming the engine model, wiring/charging setup, and safety interlocks up front prevents ordering the wrong engine and reduces repeat labor.

Last updated: February 2026