Magneto Flywheel Fixing Nut (41); Spark Plug; F) Special Equipment - GGP SV200 Workshop Manual

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ENGINE BLOCK – External operations
H) Replacing the lower compression ring
of the engine shaft (sump side)
NOTE - This operation must be performed by
lifting the lawnmower from the front after having
drained all the oil from the sump and the fuel
from the tank.
91 Remove the blade (71) and hub (72).
92 Take out the spline key (73).
93 Use a thin screwdriver inserted under the seal-
ing lip to extract the oil seal ring (74).
94 Make a paper tube (75) around the shaft to pro-
tect the sealing lip and insert the new ring (76)
so that it enters its housing.
95 Complete the insertion with the help of a pipe
(77) of a diameter of approximately 30-35 mm.
Tightening torques
2 Spark plug tightening torque ............ 18-22 Nm
12-22 Valve cover fixing screws ............ 8-10 Nm
23 Cylinder head screws ....................... 22-25 Nm
41 Magneto flywheel fixing nut .............. 45-50 Nm
51 Breather plate fixing screws ............... 8-10 Nm
Technical information
Inlet valve clearance ......................... 0.08-0.10 mm
Exhaust valve clearance .................. 0.08-0.10 mm
Minimum inlet valve stem diameter ........... 5.4 mm
Minimum exhaust valve stem diameter ...... 5.4 mm
Minimum inlet valve head rim thickness .... 0.5 mm
Minimum exhaust valve head rim thickness ..... 0.8 mm
Valve seat depth ................................ 0.8-1.25 mm
Minimum valve spring length .................... 32.5 mm
Special equipment
3 Compression testing tool
35 Valve seat grinding tool
36 Valve grinder
© by GLOBAL GARDEN PRODUCTS
SERVICE MANUAL
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SV200 R200
2007
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4/2007