Drive sprocket key 16.90 x 4.75 x 3.45 mm LS Tractor / LS MT3.50 / TRG281 / A1281399 / 40009844
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  • Drive sprocket key 16.90 x 4.75 x 3.45 mm LS Tractor / LS MT3.50 / TRG281 / A1281399 / 40009844
  • Drive sprocket key 16.90 x 4.75 x 3.45 mm LS Tractor / LS MT3.50 / TRG281 / A1281399 / 40009844

Drive sprocket key 16.90 x 4.75 x 3.45 mm LS Tractor / LS MT3.50 / TRG281 / A1281399 / 40009844

Product code: 40009844
Brand LS Tractor
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zł13.42 netto
zł16.51
Includes VAT 23%

Lowest price from 30 days: zł16.51

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Available
52 pieces
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Product description

Key for the sprocket of the gearbox shaft, number 40009380 , dimensions 4.75 x 16.90 x 3.45 mm for LS Tractors of the MT3.50 series and others.

The wedge, the rack lock is an element whose main task is to determine the appropriate position on the shaft. There are two types of wedge joints that use wedges:

  • longitudinal wedge connection ( wedge for setting racks , gears, hubs on shafts and the like),
  • transverse wedge connection (wedge for connecting shafts, rods, sleeves and the like),

The wedge for setting the rack or pinion is a longitudinal wedge , which is mounted in a special groove on the shaft or hub or rack. in addition to positioning and blocking the elements, the wedges also take over part of the pressure load of the contact surfaces.

Dimensions :

  • width: 16.90mm,
  • length: 4.75mm,
  • height: 3.45mm,
  • comparative numbers: A1281399.

Tractor models :

LS Tractor :

  • LS MT3.50.

Warehouse :
L01:M26:S02

Specifications

Condition
New

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Questions & Answers

Why is regular filter replacement (oil, air, fuel) crucial for a mini tractor?

User
Ekspert Traktor.com.pl – Doradca techniczny • 17.02.2026
Regular filter replacement is the easiest way to extend the life of an engine from brands like Kubota or Yanmar. The oil filter removes metallic contaminants generated during operation, the air filter protects the cylinders from field dust, and the fuel filter prevents water and dirt from damaging the precision injection system. We recommend replacing filters every 50-100 operating hours or at least once per season to ensure optimal engine performance.

How to properly select and sharpen mower blades for a Japanese tractor?

User
Ekspert Traktor.com.pl – Doradca techniczny • 17.02.2026
When selecting mower blades, consider the mower deck model and the blade length and center bore diameter. Maintaining blade balance is crucial when sharpening – an unbalanced blade causes vibrations that damage the hub bearings. Remember that sharp blades mean healthier grass, a cleaner cut, and less strain on the engine of your Iseki or Mitsubishi tractor.

How to identify the correct V-belt size and how to care for it?

User
Ekspert Traktor.com.pl – Doradca techniczny • 17.02.2026
It's best to read the markings on the side of the old V-belt. If they are illegible, measure the belt width and its outer length (La). On Shibaura and Hinomoto tractors, it's important to regularly check the belt tension – too loose a belt will cause slippage and faster wear, while too tight a belt can cause alternator or water pump bearing failure.

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