Disassembly , Inspection And Assembly Of Specific Components; Carburetor - Rotax 125 MAX DD2 Repair Manual

DISASSEMBLY , INSPECTION AND ASSEMBLY OF SPECIFIC COMPONENTS

▲ Warning:
Components, which have reached or exceeded their wear limits, must be replaced. Components,
which are found to be defective in the context of the visual inspection and might influence the engine's
performance, must also be replaced.
◆ Note:
When making low tolerance measurements (s < 0.1 mm) and in measuring bearing
and housing components, the temperature of the components and their surroundings
must be in the range 20°C - 25°C.

Carburetor

◆ Note:
In the case of problems with the fuel
supply the carburetor should first be
cleaned and specific components
inspected.
➩ Disassemble the carburetor into the parts shown in
Fig. 33 and clean the parts wit h fuel.
✔ Clean the fuel filter and inspect it for damage.
✔ Blow through the bores in the housing and the jets
with compressed air and check that these passages
are clear.
✔ Check for tight and correct seating of the retaining
ring on the jet needle.
✔ Inspect the point of the needle of the needle valve for
good condition.
➩ Assemble the carburetor in reverse sequence to that
followed for disassembly.
◆ Note:
Use
Part No. 293 834.
✔ Check the setting of the float bracket.
◆ Note:
When the carburetor is held upside down,
the float bracket must take up a
horizontal attitude when free from load.
The two pointed ends of the bracket must
be at the same height - if necessary bend
the ends to suit. In this check the float
and float chamber should not have been
fitted.
◆ Note:
The lettering "Alto" = on the top of the
floats must be visible in the installed
condition.
◆ Note:
Install and adjust the Bowden cable for
the carburetor piston actuation in
accordance with the operating
instructions.
◆ Note:
Set the adjusting screws 31 and 36 in
accordance with the operating
instructions.
Page 26
Repair Manual 125 MAX DD2
the gasket set
39
38
37
ROTAX
28
29
8
9
7
12
5
4
3
6
2
1
20
13
19
16
18
14
15
17
21
22
23
24
25
26
27
10
11
31
30
35
32 33
36
34
Fig. 33
Issue 01/2006