Rotax 125 Max Retrofit Instruction

Umbauanleitung/retrofit instruction 125 MAX Series
5. Installation of components
5.1) INSTALLATION OF CYLINDER COMPONENTS
 Notice: The opening of the combustion chamber should still be covered.
5.1.1) Installation of piston, piston pin
 Notice: Mount the piston with the locking pin of the piston ring facing the intake port.
 Notice: The piston pin is fixed in the piston with two circlips (groove at bottom).
 Notice: Always use new circlips. Used or previously installed circlips have too little
tangential tension and they may twist and work their way out of the groove in the piston.
 Note: For easier installation we recommend installing one circlip before installing the piston.
 Coat the piston pin retainer with engine oil.
 Insert the piston pin retainer into the upper conrod eye.
Fig. 28 (K00334)
 Place the new circlip (1) flat on a level surface and push the mounting sleeve (2) part
no. 676035 over it. See Fig. 29
 Push the circlip deeper into the mounting sleeve with the tapered side of the installation tool
(3).
 Rotate the installation tool and continue to push the mounting sleeve until the circlip reachs
the end of the mounting sleeve. See Fig. 30
Seite/page 47/59 Ausgabe/Edition 09/2014

Rotax 125 Max Specifications

General

Engine type	Single-cylinder, 2-stroke
Displacement	124.8 cc
Cooling system	Liquid-cooled
Bore x Stroke	54 mm x 54.5 mm
Starter	Electric starter
Intake System	Reed valve
Clutch	Centrifugal dry clutch
Fuel System	Carburetor
Exhaust system	With silencer
Maximum Power	28 hp (20.5 kW) @ 11, 500 rpm
Maximum Torque	21 Nm at 10, 500 rpm
Gearbox	Direct drive
Lubrication	Mixture lubrication