Rotax 125 Max User Manual

DK00025.fm
REPAIR MANUAL
BRP-Powertrain
Effectivity: 125 MAX/125 Junior MAX/125 Mini
MAX/125 Micro MAX
Edition 2 / Rev. 0
Chapter 3
Page 1
December 01/2010
Chapter: 3
ENGINE AND GEARBOX
Contents This chapter describes the disassembly and assembly of the engine and
gearbox module of the ROTAX 125 MAX engine. The description is
divided into sections.
Subject Page
System description Page 3
Preparation
Dismantling the exhaust system
Dismantling the ignition unit
Removal of the fuel line
Removal of the cable bowden
Removal of the engine from the Kart chassis
Positioning the engine on the trestle mounting plate
Page 5
Page 5
Page 6
Page 8
Page 9
Page 10
Page 11
Preparation
Remove the engine from the trestle mounting plate
Installation of the engine in the Kart chassis
Installation of the fuel line
Installation of the cable bowden
Installation of the ignition system
Installation of the exhaust system
Page 13
Page 13
Page 13
Page 14
Page 14
Page 15
Page 16
Starting the engine Page 16

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