Evolution Evo-System Instruction Manual page 2

Note: This procedure is a two person
operation and must only be attempted
with the engine completely COLD!
The rubber
transmission system of the Evo-engine. It is
a 'wearing part' and should be checked every
250 hours for serviceability. The following
instructions are intended for owner/operators
who are familiar with and have competence/
experience in the maintenance procedures
required for small capacity 4 stroke petrol
engines. If you do not feel completely
confident with the following instructions,
please contact our helpline for extra advice.
• Note the position of the recoil starting
handle for future re-installation. Remove
the recoil starting system by undoing and
removing the 3 x ø8 mm (Evolution
Engine) or 3 x ø10 mm (Mitsubishi Engine)
securing bolts and washers. Store these
and the recoil system safely.
Removing the recoil starting system will give
access to the ø21 mm nut on the end of the
engine crankshaft.
2
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coupling is part
http://www.evolutionpowertools.co.uk/evosystem
of the
ø21 mm
This nut can be held with a spark plug
spanner to prevent the crankshaft from
rotating.
• Hold the crankshaft securely to prevent it
from rotating.
• Loosen the ø19 mm AF bolt on the
opposite end of the crankshaft by using a
19mm socket with a tommy bar attached.
The socket can be 'pushed' into the
machine to gain extra security for the
socket on the bolt head.
The ø19 mm bolt is tightened to a
reasonably high torque and may need to be
'shocked loose' by subjecting the socket
tommy bar to a sharp blow (use a rubber
mallet).
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