Lawn mower blade
Masport 460mm swing-back blade and bolt set 729150 (4 blades)
729150
Fits 3 models
Wrong part, or your model missing? Tell us. A person checks every report.
GenuineGenuine Masport
$36.80
Mower Supastore · 28 OctLowest genuine · Mower Supastore · checked 28 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Masport. Compatible: another brand.Genuine is made by Masport. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest price · $36.80
Mower Supastore. Every seller we track is listed below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
Compare 1 seller
AUD, before delivery. Each price shows when it was checked.
Opens Mower Supastore in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Replace it when the blades or bolts are worn or damaged, in sets so the cutter stays balanced, Masport says; check them before each use and whenever the mower hits something or starts to vibrate.
After replacing: No reset needed.
How to change the 729150 blade
Watch the guide or follow the steps.
- 1Stop the engine and wait for the blade to stop, then remove the spark plug lead and keep it away from the plug. Wear protective gloves.
- 2Drain the fuel, then tilt the mower with the spark plug uppermost, as the engine book says.
- 3Undo the blade centre bolt and take the blade carrier (disc) off the mower, noting where each part goes.
- 4Undo the tip mounting bolts and fit the new blades with the new bolts, washers and nuts from the set. Replace all the blades on the carrier together.
- 5Refit the carrier so its slots sit over the lugs and the drive plate; replace the mounting bolts if they are worn. Tighten the tip bolts to 20-25 Nm and the centre bolt to 45-50 Nm.
Every number this part goes by
- Retail name:
- 729150
- Retail name:
- MAP729150
Sellers list any of these; they are the same part.
Will it fit your appliance?
Type your model number and we'll check it against the makers' lists.
Fits these 3 Masport models
Takes 4 blades on its 460 mm flat disc: one set of 729150 (4 blades with bolts) does the job.
Common questions
- What does the 729150 fit?
- The Masport 460mm swing-back blade and bolt set 729150 (4 blades) fits the Masport 350 ST S18 2'n1 SP, 350 ST S18 2'n1 SP InStart and RotaRola AL SP S18.
- Where can I buy the 729150 in Australia?
- We track 1 Australian seller for the 729150; the lowest listed price when we last checked was A$36.80 at Mower Supastore. Prices are re-checked daily and dated on this page.
- How do I fit the 729150?
- 5 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- A blunt blade tears the grass tips, which then brown, and a bent blade makes the mower vibrate and wears the engine or motor.
- Is there anything to reset afterwards?
- No reset needed.
Something looks wrong with the 729150 match? . Reports go to a person, not a bot.