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Service-InformationM otorcycle
BMW of N.A.
Service Department
Group: 13
Fuel Supply &
Adjustments
March 1987
13 015 87
(2245)
For USA Only
Air Filter Element – All Boxer Models – 1981 on
Infonnation: The quality of the air filter element has been
improved, al though the pa rt number has not changed.
The most noticeable changes are:
Change:
Important:
Complaint:
Cause:
Remedy:
Note:
1. The density of the filter material
2. Number of folds
3. Outside surface of the filter
4. A better fit to the cover and air box lower
housing
The filter manufacturer’s raised imprint is now facing
the front.
Please note that this is contrary to instructions
printed in the Rider 1s Manual and repair fiche. Please
pass this information on to your customers.
Filters with the manufacturer’s name in white paint
are installed with the printing facing the
rear.
Due to casting variations in the air filter cover
of 1980 model motorcycles (sandcast covers)ยท, it may
be necessary to replace the upper cover with a current
plastic cover – Part No. 13 72 l 337 228 – at the
customer’s expense.
Air leaks between the air filter element an the lower
section of the housing.
The filter frame a round the filter element is not
seating properly into the lower air box.
Remove materi a 1 from the filter frame as i 11 ustra ted
(arrows).
Since September, 1986, air filters have been modified
on all production motorcycles. Please check
motorcycles produced before this date and air filters
from Part stock.
Very truly yours,
About the Service Bulletin Archive
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