Removal Of Coolant Thermostat; Removal Of Cylinder; Removal Of The Piston And Piston Ring - Rotax 125 MAX DD2 Repair Manual

Removal of coolant thermostat

➩ Remove the coolant thermostat (Item 13) from
the cylinder head cover on removing the 2
screws (Item 17) on the metal mounting bracket
(Item 16).
➩ Remove the thermostat from the support plate
(Item 14).
➩ Remove the coil spring (Item 15).

Removal of cylinder

➩ Release the cylinder by unscrewing the 4 flanged
nuts (Item 11) from the crank and gearbox
housing.
➩ Remove the cylinder with base gasket (Item 12)
from the crank and gearbox housing.
➩ Only loosen the screw plug (Item 4) if it is not
sealing or is damaged.
■ Attention: Do not damage the piston, piston
ring and cylinder wall when
dismantling these components.

Removal of the piston and piston ring

➩ Push out the piston pin retainer ring with a
suitable tool.
■ Attention: In order to protect the piston pin
retainer ring from unintentional loss
in the crankcase, a suitable clean
cloth should be used to cover the
open cylinder bore.
■ ■ ■ ■ ■ Attention: Always support the piston with the
hand in order to avoid a bending
moment on the connecting rod.
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Repair Manual 125 MAX DD2
Fig. 20
Fig. 21
Fig. 22
Issue 01/2006