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Soil, which has been disturbed or new in ll, subbase and blacktop, will have small voids or air pockets which, if not compacted, will
lead to one or more problems occurring.
1. As traf c crosses the surface of an uncompacted area, the material is compressed. This leads to subsidence of the top surface
as the material lls the voids.
2. A similar situation occurs with static loads on uncompacted ground. The load (e.g. a building) will sink.
3. Materials with voids are more susceptible to water seepage, leading to erosion. Water ingress may also cause the soil to
expand during freezing temperatures and contract during dry spells. Expansion and contraction is a major cause of damage to
building foundations and normally leads to the structure requiring underpinning.
Compaction increases the density of the material and therefore increases its load bearing capacity. Reduces air voids and therefore
reduces the risk of subsidence, expansion and contraction, due to ingress of water.
Honda Petrol Engine
1.
Open the fuel tap by moving the fuel ON / OFF lever fully to the right.
2.
If starting the engine from cold, set the choke ON by moving the choke lever fully
to the left. If restarting a warm engine, the choke is usually not required, however, if
the engine has cooled to a degree, partial choke may be required.
3.
Turn the engine ON / OFF switch clockwise to the 'I' position.
4.
Set the throttle to the idle position by moving the throttle lever fully to the right. Do
not start the engine on full throttle, as the compactor will vibrate as soon as the
engine starts.
5.
Taking a rm hold of the control handle with one hand, grasp the recoil starter
handle with the other. Pull the recoil starter until engine resistance is felt, then let
starter return.
6.
Taking care not to pull the starter's rope fully out, pull the starter handle briskly.
7.
Repeat until the engine res.
8.
Once the engine res gradually set the choke lever to the OFF position by moving it to the right.
9.
If the engine fails to re after several attempts, follow the troubleshooting guide.
10. To stop the engine, set the throttle to idle and turn the engine ON / OFF switch anticlockwise to the '0' position.
11. Turn the fuel off.
Hatz Diesel Engine
1. Turn ON the fuel by moving the fuel ON/OFF lever fully to the right.
2. Set the engine speed control to start.
3. Taking a rm hold of the control handle with one hand, grasp the recoil starter handle with
the other. Pull the handle until engine resistance is felt, then let the starter return.
4. Taking care not to pull the starter's rope fully out, pull the starter handle briskly with both
hands.
5. Repeat this procedure until the engine res.
6. If the engine fails to start after several attempts, Follow the troubleshooting guide.
7. To stop the engine, set the throttle control to idle, then press and hold the red stop button
until the engine stops.
Reasons For Compaction
Start And Stop Procedure
17
Throttle Lever
Choke Lever
Fuel ON/OFF
Lever.
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