SV200 R200
4/2007© by GLOBAL GARDEN PRODUCTS
30 Turn the flywheel manually to move the piston
and clean inside the cylinder (26).
31 When mounting:
– the gasket (25) must always be replaced;
–refit the cylinder head (24) first screwing in the
four screws (23) without fully tightening, then
tighten them to the given torque values, using
a cross-over sequence.
32 Refit the exhaust muffler [
6.8.A].
33 Remount the carburettor [
6.4.A].
34 Remount the conveyor (20).
35 Remount the tank [
6.1.A].
36 Remount the starting system [
6.2.A].
D) Overhauling the cylinder head and valves
NOTE
- These paragraphs describe all the oper-
ations for checking and overhauling the cylinder
head; it is left to the operator to assess the
advisability of performing all the operations
described or only part of them, depending on
the type of engine problems encountered.
41 Dismount the cylinder head [
6.9.C].
42 Move the rocker arms (31); press down the
spring seal cap (32) and move it sideways to
remove from the valve stem (33).
IMPORTANT - The inlet and exhaust valves are
different from each other and can be identified
by the marking «IN» (inlet) and «EX» (exhaust),
on the valve head.
43 Use an emery cloth to remove all incrustations
from the valve head (33) and check the thick-
ness of the rim (A). The valve must be replaced
if the rim (A) is less than 0.5 mm or shows signs
of burning.
44 Check the diameter of stem (B) in several points
and replace the valve if it is less than the follow-
ing, even if only in one point:
5.4 mm (inlet - IN)
5.4 mm (exhaust - EX)
6.9.1
ENGINE BLOCK – External operations
3 / 7
SERVICE MANUAL
page
from
2007 to ••••
To Next Page
Loading...
Need help?
General
