2/4 stroke presentation

Work experience

Motor of bike with camshaft cover removed. To time the engine, the 2 lines have to be horizontal, while the piston is at TDC. However it is easy to time it with the camshaft 180 degrees out.

This is the flywheel. Here we can (just) see 2 marks. T, which is TDC and F, which is fire. The dirrerence between these 2 marks will be approximately 5 to 8 degrees.

This is the flywheel assembly from the side. We can see the timing mark above the flywheel, to line up TDC.

This is the flywheel cover, which has the alternator mounted inside it. It also has starter moter gears mounted there too.

injector pipes off a tractor

Engine of the tractor



engine with rocker cover removed



Rockers on shaft after removal

Starting to lift head off. The head studs stay in the block, so is difficult to have to lift the head up evenly.

Block with head removed

Cylinder head after removal

Aniter tractor which we had split to remove the clutch. This is the back half, looking at the gear box.

This is the front half, looking at the motor. The flywheel would be here but we had removed it.

The tractor. To get at the bolts at the top of the bell housing, we had to undo the cab mounts and jack the cab up.

We split the tractor about  2 to 3 feet. The motor has been jacked up on a jack with wheels, which sits in a track on the ground, (can be seen in the photo) when all bolts etc are removed, the front half rolls forwards on the jack and front wheels.

Frost plug which came out of cylinder head.

Flywheel out of tractor

Flywheel after it had been refaced. This was very worn.

Clutch plate.

Pressure plate.

Pressure plate again.

Piston out of one of our tractors, as you can see from the chunk missing, the engine did not run very well.

Another piston out of our tractor.

Looking down at the cambelt assembly on the bosses car. We had to replace the water pump.

Removed the water pump pully.

Looking up at the crankshaft pully.

I removed the crankshaft pulley and cambelt covers.

Looking down at cambelt assembly.

Torquing down head bolts on the tractor engine.

Setting valve clearances on the tractor.