crankshaft.  Remove key (40).  Unscrew and re- move  nut  (51),  gear  wheel  (52)  from  oil  pump (53). (34)Figure   8-30,   Sheet   7   of   10.      Fix   cam   follower (tappets)  (64)  away  from  cam  lobes  using  tool No.  15, Figure 2-1, or equivalent.  Pull cam from crankcase. CAUTION Care  should  be  taken  when  disassembling  springs  (52) that shims (53) and balls (55) are not lost. (a) Remove   springs   (52),   spring   holder (53), shims (54) and ball (55). Remove   screws   (56),   lock   washers (57), spring support (58), brackets (59) and weights (60). (b) Unscrew    and    remove    screws    (61), lock washers (62).  starter sleeve (63), gear  wheel  (66)  and  pin  (67).    Do  not remove   caps   (64)   or   pin   (65)   from starter   sleeve   (63)   unless   damaged and replacement is re-quired. NOTE Before   removing   extra   fuel   device,   cut   and   re-move safety   wire   secured   on   threaded   pins   located   directly above extra fuel device (66).  Loosen threaded pins. (35)   Figure  8-30,  Sheet  6  of  10.    Using  socket wrench  (tool  No.    10,  Figure  2-1)  unscrew and remove extra fuel device (66). Remove o-rings (67) from extra fuel device (66). (36)   Figure 8-30, Sheet 3 of 10.  If throttle lever (42)  has  not  been  removed,  unscrew  and remove    screws    (40),    and    lock    washers (41), remove lever (42). NOTE Remove  screws  (43)  with  care,  shims  and  spacers  are behind tension plate (47). (37)   Unscrew   screws   (43).      Remove   tension plate   (47),   shims   (44)   and   spacer   (45). Remove     protective     cap     (48),     adjusting screws (49) and locknuts (50). (38)   Remove clip (57) from governor lever (58), detach spring (56) and remove screws (60), washers (61), support (62), spring (56) and support guide (63).  Disconnect the  control rod  (59)  from  the  governor  lever  (58),  and remove  the  control  rod  through  the  side  of the crank-case. (39)   Remove   the   pin   (51)securing   the   throttle shaft (52) and connecting lever (55) together.      Re-move   the   spring   (54)   from shaft (52).  Remove the retaining clip (55b) securing    the    connecting    lever    (55)    and governor   lever   (58)   together.      Re-move throttle   shaft   (52)   from   crankcase.      Re- move o-ring (53) from shaft. (40)   Figure  8-30,  Sheet  5  of  10.    Unscrew  and re-move screws (13), washers (14). Disengage housing (15) from engine flange (20).      Remove   flywheel   mounting   screws (16)   and   remove   fly-wheel   (17).      Do   not remove  gear  ring  (18)  from  flywheel  (17), unless   damaged.      Remove   screws   (19), detach engine flange (20) from crankcase. (41)   Figure 8-30, Sheet 4 of 10.  Remove socket head  screws  (23)  from  flywheel  hub  (24). Re-move   flywheel   hub   (24)   and   bushing (25).  Re-move hex nuts (26), lock washers (27) from bearing flange (38).  Using thrust screws, break flange away from crankcase and  remove  flange  (28).    Remove  gasket (29);    studs    (30)    need    not    be    removed unless damaged. (42)   Remove   oil   seal   ring   (34)   from   bearing flange   (28),   press   out   bearing   (35).      If present,  remove  buffer  ring  (37)  and  shim (38). NOTE Do    not    mix    counterweights.        Weights    have    been balanced on crankshaft. (43)   Unscrew    and    remove    screws    (38)    and washers (38a) from the top of the crankcase  that  holds  the   bearing   support (38b)  to  the  case.    Pull   bear-ing   support (38b),  counterweights  (43)  and  crankshaft (45)  from  the  crankcase.    Remove  screws (37) from bearing support  (38b).    Separate bearing    halves    and    remove    crankshaft bearings (39).  Press out or knock out main bearings (22a) from crankcase. (44)   To remove rear cam bearing (62, Figure 8-3(0, Sheet 7 of 10), remove cover (63) and press out new cam bearing (62). 6-43