Other Repair Information
Information on the oil system and some small items which cause problems and are relatively simple to repair.
BMW have an engine gasket & Seal kit, the contents are listed in the pdf. Engine Seals & Gaskets pdf
Version Info
On all models obtaining and recording the firmware version of the BMSC/BMSE is important and can save time fault finding. A GS911 is a handy tool.
2005 Update
2005 Model. Poor starting (when engine is cold); engine shuts off; poor engine response when clutch is engaged after selecting a gear. Update to later firmware.
2006 Update
Spring - 11 31 2 343 097 and BMS 200E firmware update. See utilities BMS Info.
2012 Update
All K15, R13/31, R13/40 Prior to engine No 61712400. See utilities BMS Info.
2015 Update
All R13/40 with BMS-E. See utilities BMS Info.
2016 Update
The system is a dry sump system with a pressure pump and a scavenging pump. It has a low volume of oil. Oil pressure is 0.5 bar at idle.
The basic system diagram here shows fluid paths and components.
Oil pressure sender information is covered in Engine Sensors.
The external lines to the oil tank are both low pressure
Run the machine to 10 to 20 kms, park and let oil settle for 5 mins.
With the machine upright, check oil is at line on sight glass.
Oil Chk pdf
Oil lamp on dimly at idle - Grit in the sender - clean it,
Sender pdf
Oil Leaks near sender - Some senders were prone to leaks - replace it.
The engine breather into the air box will produce some oil condensation and hence the drain fitted by BMW.
This would normally only be a very small amount of oil. A larger build up of oil indicates a fault.
A Rotax engineer has indicated there are three fault conditions which can cause a build up.
1/ Oil over fill, which is a common problem with new owners of bikes with dry sump systems.2/ Counter balance shaft seal failure, leaking oil from the crank case into the RHS housing with the vent tube.
3/ Compression leak issue, causing a pressure build up in the crank case. eg A broken land between piston rings.
Oil tank can drain if bike is parked for a while with a degraded valve
A pdf with all the known information and oil non return part numbers Non Return Valve Info
The throttle body manifold can perish and crack around the base causing rough running and poor idle. The symptoms are often thought to be a sensor or engine ECU fault but there are no fault codes showing. Check it when doing routine maintenance.
Part numbers for the throttle body and components are in this Fuel Delivery pdf
The cam chain tensioner on the early F Series can stick and not provide full tension on the cam
chain. An updated cam chain tensioner is available to resolve the problem. P/N - 11317710986
The cam chain should last the life of the bike with regular oil changes & cleaning the tensioner.
On the 00-04 single spark, the spark plug cap connections can become corroded and
the metal shroud can leak HT
to earth. The components in the cap can be unscrewed and cleaned. The shroud can also be removed permanently.
One fault symptom can be hesitation in wet weather.
Tyga-performance - NSR150SP, Motionpro - 08-0385
they be replaced with hex bolts. The repair for sheared bolts
is to remove the fragments and if needed drill out the frame
nuts and use larger diameter 10mm bolts with nuts.
The OEM lower bolts are specified as Oval Head Screw - M8x25-10.9 ZNS3 - P/No 36 31 7 709 543