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Question:

The engine cylinder head cover behind the drop rubber tube what reason (Xichai 490 engine) (note the valve chamber cover tube)

The engine cylinder head cover behind the drop rubber tube what reason (Xichai 490 engine) (note the valve chamber cover tube)

Answer:

The valve chamber of the engine cylinder head cover counterclockwise with 8~10 open wrench counterclockwise unscrew rocker screw. Place the piston at the top dead center, turn the rocker head wire clockwise until the hand can not be moved, then back half a circle, then lock the nut.
Air conditioning water pipe, the specific recommendations on the map below, I hope my answer can help you.
You don't know how to repair the craft, experienced by the feeling on the line, strictly speaking, is the valve clearance feeler to grasp, generally 125, 150 valve clearance at around 0.025-0.030, the exhaust valve to the inlet valve a little bigger than. Your car is too loud. Do you think the cam or valve is too big to wear? You have to go to an experienced garage to repair it.

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