Some salient points

1. Stop turning and 1/4 turn to stop
2. Check depth of oil seal before removal
3. Put markings on belts or flanges of alternator adjusting bracket or distributor flange before removal.
4. Retighten all bolts before closing on the cover of  Evaporator cover.

5. Experiment on the old parts as to the exact angle of installation before fitting the new one.
6. Use tension of the belts to loosen the water pump bolts first before loosening any of the belts.
7. Parts replaced must be tested for the difference in its operation before confirming the job done.
8. Where possible remove the obstructing part just enough to extract the final component without removing all surrounding parts.
9. Ignition switch must be check physically to be off at all times before carrying out efi repairs.
10. Use suitable tubing of the correct diameter to knock seal in rather than pin or centre punch. For driveshaft oil seal preferably use an oversized block of wood covering over the diameter of oil seal and knock squarely but gently in.
11. Use a lower torque until the click is heard before increasing it to the actual torque required especially for torque wrench which have not been used for quite sometime.
12. Do not stop the hoist/trolley jack 1/2 way when lowering the vehicle. Always lower it all the way to the floor.
13. Always be weary of the surrounding areas when loosening a tight bolt/ nut . Inspect the surrounding areas and the likely component to be affected before proceeding to loosen. Make sure the final throw of your arm holding the tool is short of the neighbouring component by swinging it to its end point first.
14. Never knock a part into another continuously without checking it is still in the correct position all the time.
15. Cover with cloth on the opposite side of the pin that you are knocking out to prevent the pin or clip from flying out into the air.
16. When two hoses/pipes cross , install the lower pipe first.
17. Check the presence of O ring on Charging hose of Manifold bar before fitting it into the gas tank and the manifold bar and use leak detector to ensure no gas is leaking at the joints.
18. Turn the crankshft anti clockwise by 45° before loosening the cam bolt to prevent the valves from hitting into the piston should it slip. Once loosen but not removed yet, turn the crankshft back to the timing mark position.
19. Never put any component removed under the car .
20. Check the condensate pipe for no obstruction before fitting it into the car. Ensure water comes out of the  outlet.
21. Stop loosening a bolt that becomes tight in the middle. Instead, retighten it back and loosen it again by an additional 1/10 of a turn from the previous and back off again. Spray WD-40 into the surrounding area and proceed again in a back and forth manner but inching a liitle each time until the bolt is finally removed.
22. When installing a new vacuum hose, if it is small and long, use a vacuum pump to pump at one end while touching the other end with your thumb to ensure that suction is felt. If the hose is short, twist & turn the tube until you see the other end of the hose as confirmation that there is no blockade of any type. A blocked hose can only cause more vacuum problem once installed.
23. Where fuel is concerned, always relieve the fuel pressure by removing the fuel cap first. For EFi , disconnecting the electric pump or fuse and run the engine until the engine stops is necessary.