Ok I’ll give you the task as its worded on the sheet:
Produce an itemised job costing for carrying out the following task. Clearly identify labour and parts cost and explain the basis on which the labour costs are calculated. (they may be calculated on a DIY basis)
1) Re-furbish a motorcycle engine (new pistons, rings, bearings valves etc)
Thats all the question says, the only reason i picked the Yamaha was that one my mates has one.