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Product description
Cylinder head valve stem seal for LS Tractor tractors, XR, XU, R, U, G, MT5, MT3 series and others.
A small rubber seal whose main task is to prevent engine oil from entering the combustion chamber and exhaust gases from entering the cylinder head.
The valve seal ensures excellent tightness on the valve stems, i.e. where the valves enter the engine cylinder head. Symptoms of a worn or faulty seal are above all increased oil consumption, as well as damage to the catalytic converter.
It is best to replace the valve seals during an overhaul of the engine cylinder head, or when the engine has started to consume large amounts of oil. Keep in mind, however, that this is a fairly complicated job requiring knowledge and experience, so it is worth entrusting it to experienced mechanics.
ITEM NO. 3 MARKED IN BLUE ON THE DIAGRAM
Tractor models:
- LS XR45, XR45HST, XR50, XR50HST, XR60,
- LS G40,
- LS XU6158, XU6168,
- LS U43, U50, U60,
- LS MT5.73, MT5.68,
- LS MT3.30, MT3.60,
- LS R41, R41HST, R43, R43HST, R50, R50HST, R60
Previous part number 40007384.
Warehouse:
L01: H213
*Photos are for illustrative purposes only and may differ in detail from the delivered product due to production differences over the years.
Specifications
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Questions & Answers
Why is regular filter replacement (oil, air, fuel) crucial for a mini tractor?
User
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
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
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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