First, I'd check that the 35mfd cap is the right one for this saw. Could have been changed at one time with the wrong size.

If the 35mfd is right you can try a higher voltage capacitor, replace your existing one with that. Just keep the mfd rationgs the same and it will work fine.

But, 440 is the higher voltage caps I'm familiar with so you might not find a higher voltage cap available.

Sometimes two caps are used together on motors drawing large starting current. This divides the voltage between the two caps and puts less of a strain on each one. To do this, find two capacitor's whos mfd ratings add up to the 35mfd (Such as a 25 and a 10) and wire them in parallel.

to original cap terminals
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|--||--| -->25mfd cap
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'--||--' --> 10 mfd cap