The front cylinder .head and barrel may be removed when the front exhaust pipe and carburettor have been disconnected. To remove the rear cylinder head and the barrel, the following parts must first be removed:
Exhaust system.
Front and rear air boxes.
Front apron assembly.
Plastic side panels.
Oil cooler pipes.
It is also more convenient to release the oil cooler pipes at the crankcase end. To do this, slacken the union at the oil cooler end (11/16" A.F.) to allow the pipes to be rotated. Then slacken the crankcase fittings (5/8"A.F.) and rotate the pipes to release them.
It is not necessary to dismantle the drive side or timing side engine covers; however it is more convenient if the camchain cases are removed (page 16) and this necessitates removal of the timing side cover (page 1).
Proceed as follows:
Remove the camshafts (pages 21-22), noting first the relevant valve clearances for reassembly.
Slacken the sleeve nuts (18mm or 3/8" Whitworth) holding the tie rods into the crankcase, by about one turn. Should the sleeve nuts not yield to normal spanner pressure, release the restriction of the threads by striking one of the sleeve nut flats smartly, using a flat ended drift.
