i am a newbie and not a bobcat mechanic by any means. the machine ran good but always seemed to run out of diesel after an hour of use. refilling with about 2gallons of fuel did the trick. i lived with that issue for a last years ( i only use the bobcat for projects around my property every other month for a day maybe) till recently it shut down completly. checking things out i realized manual rubber pump was squeezed and closed - no fuel gets sucked out of tank. blowing backwards with air pressure made fuel bubble in tank. so what is the problem ... how do i fix it? where can i get repair manuals for 753 to download? thanks for any suggestions or help?