问题描述：
英语翻译
warning
1.ensure valve and gasket isand free of any sand particles
2.tighten the nuts with fingers first and in a sequeten similar to tighening car tyre
3.the bolts shoul be fairly evenly tightened
4.the bolts are not to be over- tightened
warning
1.ensure valve and gasket isand free of any sand particles
2.tighten the nuts with fingers first and in a sequeten similar to tighening car tyre
3.the bolts shoul be fairly evenly tightened
4.the bolts are not to be over- tightened
问题解答：
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