* Copper down 0.4 pct on LME, down 0.5 pct on ShFE * Investors cautious before U.S. jobs data * World factory output slows * Investors still fret about Europe's handling of debt woes * Coming Up: U.S. non-farm payrolls, Aug; 1230 GMT (Updates prices, adds quotes and details) By Carrie Ho SHANGHAI, Sept 2 (Reuters) - Copper prices fell on Friday, as weak equities and demand concerns triggered by lacklustre global factory output weighed on sentiment, while investors awaited key U.S. payrolls data for clues on the health of the world's largest economy. Caution is likely to prevail before the U.S. August employment report is released at 1230 GMT. Non-farm payrolls are expected to have increased by 75,000, slowing from July's 117,000 rise, according to a Reuters survey. Three-month copper on the London Metal Exchange fell 0.4 percent to $9,110 a tonne by 0349 GMT, after dropping 1.4 percent in the previous session. The most-active November copper contract on the Shanghai Futures Exchange SCFc3 fell 0.5 percent to 67,830 yuan per tonne, after falling 0.3 percent on Thursday. It was on track for a 0.6 percent rise for the week. "The U.S. non-farm payrolls numbers will be out later today and everyone's a bit wary. The poor performances of equities overnight and today further dampened sentiment," China Futures Co analyst Yang Jun said. Asian shares dipped with investors largely sidelined before the payrolls report, the only jobs data due before the U.S. Federal Reserve holds a two-day meeting at which some market participants expect some sort of policy easing. Metal prices were also weighed down as weakened global factory output deepened concerns over demand prospects, while Europe's handling of its debt woes dented sentiment too. World factory output slowed in August as worries about the euro zone and U.S. debt reduced confidence, heightening fears the global economy could sink back into recession. In Europe, politicians rejected an International Monetary Fund call for banks to raise up to 200 billion euros ($290 billion) in new capital, adding to fears that policymakers may be underestimating the severity of the debt crisis. However, data out of the United States showing unexpected growth in the manufacturing sector in August, fewer jobless claims last week and a slight rise in U.S. auto sales, helped keep a floor under prices. On the supply side, a threatened 24-hour work stoppage at Chile's Collahuasi, the world's No. 3 copper mine, is now less likely, a union source said on Thursday. ? Base metals prices at 0349 GMT Metal Last Change Pct Move YTD pct chg LME Cu 9110.00 -38.00 -0.42 -5.10 SHFE CU FUT NOV1 67830 -360 -0.53 -5.59 LME Alum 2445.00 -10.00 -0.41 -1.01 SHFE AL FUT NOV1 17410 -55 -0.31 3.38 HG COPPER DEC1 413.75 -2.30 -0.55 -6.80 LME Zinc 2222.00 -17.00 -0.76 -9.45 SHFE ZN FUT NOV1 17055 -150 -0.87 -12.43 LME Nickel 21650.00 -100.00 -0.46 -12.53 LME Lead 2520.00 -30.00 -1.18 -1.18 SHFE PB FUT 16610 -175 -1.04 -9.48 LME Tin 23950.00 -295.00 -1.22 -10.97 LME/Shanghai arb 213 Shanghai and COMEX contracts show most active months ^ LME 3-m copper in yuan, including 17 pct VAT, minus SHFE third month

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