Open the grill, place gear lever in neutral, turn the valve on the pump body to tilt position, inset pump handle and pump. If nothing happens try valve in other position or check fluid level in pump, if the fluid is low top up with PAS/ATF oil and try again but this time check for a leak such as a split hose. If there is a split hose or fitting then you will need to get this repaired first and no tape and a jubilee clip wont hold the pressure its over 1000psi
Darren Brown
December 2010