Rotax float replacement criteria

[Safety Officer]

Read page 2 of SB-912-067 - SB-914-048.

 If your floats fall within the parameters listed on page 2 of the SB they get replaced whether they are bad right this minute or not. Tell them to read page two also. It is all floats within a certain time period and or serial number because there would be no way to tell if or when a float from this casting series would go bad.

1.1) Applicability
All engines of Series 912 A, 912 F, 912 S and 914 F are affected, if at least one of following
criteria applies:
Criterion A) Engine Serial number:
Criterion  Carburetors:
The part numbers and serial numbers of the carburetors:
Criterion C) Spare parts:
Further all engines are affected, which have been equipped during engine repair, maintenance
or general overhaul as of July 01, 2012 with floats with the part no. 861184, which
have not been marked (see page 7, chapter 3.3).
NOTE: The carburetor and/or the float may have been removed from the initial
engine and used on another one.
Engines and/or carburetors with serial numbers higher than in criterion A
or B have already been equipped with tested floats. To provide traceability
the floats were marked as described in section 3.3.
For relevant information, see the maintenance records and/or the logbook.
1.2) Concurrent ASB/SB/SI and SL
In addition to this Service Bulletin the following Service Instruction must be observed and
complied with:
- Service Instruction-SI-912-021/SI-914-023, „Inspection of carburetors“, current issue.
Engine type Serial number
912 A From S/N 4 410 957 up to S/N 4 411 048 inclusive
912 F From S/N 4 413 008 up to S/N 4 413 041 inclusive
912 S From S/N 4 924 408 up to S/N 4 924 838 inclusive
914 F From S/N 4 421 136 up to S/N 4 421 403 inclusive
Carburetors Serial number
912 A/F 1/3 part no. 892500 - from S/N 116434 up to S/N 144101 inclusive
2/4 part no. 892505 - from S/N 115846 up to S/N 143886 inclusive
912 S 1/3 part no. 892530 - from S/N 121087 up to S/N 143702 inclusive
2/4 part no. 892535 - from S/N 120980 up to S/N 143505 inclusive
914 F 1/4 part no. 892520 - from S/N 116207 up to S/N 143799 inclusive
2/4 part no. 892525 - from S/N 120228 up to S/N 143310 inclusive

 

 

 

and

 

 

 

1.1) Applicability

All engines of Series 912 UL, 912 ULS and 914 UL are affected, if at least one of following criteria applies: Criterion A) Engine Serial number: Criterion Carburetors: The part numbers and serial numbers of the carburetors: Criterion C) Spare parts: Further all engines are affected, which have been equipped during engine repair, maintenance or general overhaul as of July 01, 2012 with floats with the part no. 861184, which have not been marked (see Service Bulletin SB-912-067/SB-914-048, latest revision, chapter 3.3, page 7).

 

NOTE: The carburetor and/or the float may have been removed from the initial engine and used on another one. Engines and/or carburetors with S/N higher than mentioned in criterion A or B have already been equipped with tested floats. To provide traceability these floats were marked as described in section 3.3 (refer to Service Bulletin SB-912-067/SB-914-048, latest revision). For relevant information, see the maintenance records and/or the logbook. For complete instructions and compliance to this Service Bulletin refer to Service BulletinSB-912-067/SB-914-048, latest revision, section 1.2 onwards. NOTE: Section 1.6) Approval: Is not required for engines of type UL (Series). Section 3) Accomplishment: In addition, persons with adequate typespecific training can perform the work.

 

Engine type Serial number

912 UL from S/N 6 770 733 up to S/N 6 771 484 inclusive

912 ULS from S/N 6 780 228 up to S/N 6 783 917 inclusive

914 UL from S/N 7 682 154 up to S/N 7 683 662 inclusive Carburetors Serial number 912 UL 1/3 part no. 892500 - from S/N 116434 up to S/N 144101 inclusive

2/4 part no. 892505 - from S/N 115846 up to S/N 143886 inclusive

912 ULS 1/3 part no. 892530 - from S/N 121087 up to S/N 143702 inclusive

2/4 part no. 892535 - from S/N 120980 up to S/N 143505 inclusive

914 UL 1/4 part no. 892520 - from S/N 116207 up to S/N 143799 inclusive

2/4 part no. 892525 - from S/N 120228 up to S/N 143310 inclusive

[Rich]

Good afternoon,

 

912 ULS.

 

Although my engine serial # was above the range of affected engines, I removed my floats to check the condition and found one float badly pitted and worn through the first layer of material on the upper left side. I posted the pix on this site.

 

It's worth the time to check you floats as the above testifies.

 

Does Rotax replace these affected floats at their cost?

[Roger Lee]

Does Rotax replace these affected floats at their cost?   yes and they will pay .75 labor cost if you are in the affected range. 

 

The outer coating is not a sealing surface as we think of it. It is the thousands of micro bubbles that the float consist of. These are what is wrong with the bad floats. The micro bubbles are corrupt and they allow fuel to slowly creep in.

 

If the floats aren't sinking and the outside layer is not flaking off then I wouldn't worry until a problem arises because it may never materialize.

[WmInce]

Does Rotax replace these affected floats at their cost?   yes and they will pay .75 labor cost if you are in the affected range.

 

Roger, in the event we need to show it, where is that published?

[Roger Lee]

It's in the bulletins and you can verify it with CPS.

[FredG]

Not finding much on replacement floats at CPS, LEAF, or Lockwood websites.  Wonder if Rotax mentioned it to them.

[Roger Lee]

The bulletin says they will replace your affected floats. Any bodies best guess to when they will come in. There is a line at each distributor waiting for these.