Craftsman 917387070 rotary lawn mower Parts

A 42-inch riding mower typically weighs about 400 to 600 lb, depending on the brand, engine, transmission, and whether it has a bagger or other attachments. Your Craftsman 917387070 is a walk-behind rotary lawn mower, so its manual focuses on engine and blade specs rather than riding-mower weight; check the 917387070 owner's manual for the specifications that apply to your mower.

Typical weight ranges for 42-inch riding mowers

Most 42-inch riding mowers fall into these common ranges:

• Entry-level lawn tractors: ~400 to 500 lb
• Heavier lawn tractors (stronger frames, larger engines): ~500 to 600 lb
• With attachments (bagger, weights, etc.): add ~20 to 100+ lb

Quick comparison: riding mower vs. your model

Item	What it is	Typical weight	Notes
42-inch riding mower	Sit-on mower with 42-in deck	400 to 600 lb	Varies widely by build and options
Craftsman 917387070	Walk-behind rotary mower	Much lighter than a rider	Manual lists engine displacement, oil capacity, blade torque, etc.

Why weight varies so much on 42-inch riders

Weight is driven by a few big factors:

• Transmission type (hydrostatic units often weigh more)
• Frame and axle design (heavier-duty steel adds weight)
• Engine size and starter system
• Deck construction (thicker steel, reinforcements)
• Attachments and accessories (bagger, mulch kit, tire chains, wheel weights)

Why it matters

Knowing the weight helps you choose the right trailer ramps, tie-downs, and storage flooring, and it also affects traction and hillside stability. For your Craftsman 917387070 walk-behind mower, the more useful specs are things like blade bolt torque and engine oil capacity, which are listed in the manual.

Last updated: January 2026

For your Craftsman rotary lawn mower model 917387070, use high-quality detergent engine oil with API service classification SF, SG, or SH, and choose the SAE viscosity based on your outdoor temperature. The engine takes about 20 oz; fill only to the FULL line on the dipstick (do not overfill). See the 917387070 owner's manual for the temperature-to-viscosity chart.

Recommended oil type and viscosity

Use the viscosity that matches your mowing conditions:

• SAE 30: best for warmer weather (common choice for summer mowing)
• 10W-30: improves starting in cooler weather; check oil level more often because it can use more oil in warmer temps
• 5W-30: for colder conditions where easier starting is needed

What you’re doing	What to use	What to watch for
Regular warm-weather mowing	SAE 30 detergent oil (API SF/SG/SH)	Stable oil consumption
Early spring or cooler mornings	10W-30 detergent oil (API SF/SG/SH)	Check level more often above 32°F
Cold-weather starting	5W-30 detergent oil (API SF/SG/SH)	Monitor level and top off as needed

How to fill and maintain oil level

We recommend this routine for the 917387070:

• Set the mower on a level surface and clean around the oil fill
• Add oil slowly; total capacity is about 20 oz
• Tighten the cap/dipstick to get an accurate reading, then verify it is at the FULL line
• Check oil before each use and after about 5 hours of continuous mowing
• Change oil every 25 hours of operation or at least once per season (more often in dusty conditions)

Why it matters

Correct oil viscosity and API-rated detergent oil protect the crankshaft, piston, and bearings from heat and wear. Overfilling or running low can cause smoking, hard starting, and accelerated engine damage.

Last updated: January 2026

A “Craftsman 6.75” label usually refers to the engine rating, not the mower’s model number. For your Craftsman rotary lawn mower, the model number is printed on the mower’s ID label and is also shown on the cover of the 917387070 owner's manual.

Where to find the model number on the mower

Check these common locations on a Craftsman walk-behind mower:

• On the rear of the mower deck near the discharge opening
• On the deck top surface near the engine mounting area
• On the handle bracket area (left or right side)
• On a sticker or metal tag that lists “Model No.” and “Serial No.”

“6.75” vs. the mower model number (what it means)

“6.75” is commonly used to describe the engine power class, but it does not uniquely identify the mower. Craftsman mowers can share similar engine ratings while using different decks, controls, and parts.

What you see	What it identifies	Example for this mower
6.75 (engine rating)	Engine power class	Not a unique model ID
917.XXXXXX	Mower model number	917.387070
Engine model number	Engine family	Example shown in the manual: 143.975506

Why it matters when ordering parts

Using the correct mower model number (917.387070) helps us match the right blade, control cable, and hardware for your exact deck and handle setup.

If you are replacing common wear items, these model-matched parts are often involved:

• Lawn mower blade 532406713 (22-inch blade)
• Control cable 532168552 (engine zone control cable)
• Lawn mower blade adapter 581547901 (connects blade to crankshaft)

Last updated: January 2026

For a Craftsman walk-behind mower like model 917387070, the most reliable way to identify the year is to use the engine model and date code (on the engine shroud or valve cover) and cross-check it with the mower’s identification tag. Your 917387070 owner's manual confirms the mower model, which helps you match the correct engine and parts breakdown.

Where to look for the date information

On walk-behind mowers, the “year” is usually tied to the engine build date and the mower’s product/serial tag.

• Mower identification tag: commonly on the rear deck, near the height adjusters, or on the handle bracket area
• Engine label: on the blower housing (recoil starter shroud) or valve cover
• Engine model number: this mower’s manual lists an engine reference (Craftsman engine 143.975506), which is a strong clue for decoding the engine date
• Parts list cross-check: once you confirm the mower model, you can verify you are looking at the right configuration (for example, the 22-inch blade and blade adapter shown in the manual)

Quick decoding guidance (what the numbers usually mean)

Craftsman mower tags and engine tags vary by era and manufacturer, but these patterns are common:

• 6-digit date code (MMDDYY): example 071294 = July 12, 1994
• Engine manufacturer date code: often includes a build date or a Julian date (day-of-year) plus year
• Serial number formats: some use a letter prefix plus digits; the year is embedded but not always in the same position

What you find	What it tells you	Best next step
Mower model number (917387070)	Identifies the exact mower platform	Use it to match the correct manual and parts list
Engine model (example: 143.975506)	Identifies the engine family and era	Decode the engine date code on the engine label
6-digit date stamp	Often the actual build date	Read as MMDDYY when that format fits

Why it matters

Knowing the year helps you match the correct blade, blade adapter, control cable, and hardware so parts fit the deck and engine setup. It also helps when you are doing seasonal maintenance like spark plug and air filter service.

Helpful tip while you are checking the tag

If you are servicing the cutting system at the same time, confirm the blade and adapter match your mower’s configuration. For this model, common related parts include the lawn mower blade 532406713 and the lawn mower blade adapter 581547901.

Last updated: January 2026