westwoodw11gazelle?

Check there is actually a fault with the old solenoid (or solinoid if you must)

Buy a new one

https://www.japgmowers.co.uk/westwood-w6-w8-w11-w16-gazelle-ride-on-mower-starter-solenoid-part-1530-1204-7488-p.asp

Compare to old one.

Check you have spanners and screwdrivers that fit the various fastenings and terminals

Check which wires go where and make a note on paper. Label wires if necessary

disconnect battery

Carefully undo terminals

Consider checking old solenoid if you have still not confirmed it is faulty

undo fixing bolts

lift away old solenoid (or solinoid if you must)

Consider checking old solenoid if you have still not confirmed it is faulty

Fit new solenoid

Re-attach cables

Reconnect battery

Test

vdsvds
October 2017