BMW R51 User Manual

Provides concise and practical instructions for operating BMW Models R 51/66 and R 61/71.

Describes the ignition key's function and the control lamp indicator.

Explains how to adjust the steering damper for different road conditions.

Details the adjustment of the ignition lever based on engine speed.

Explains the function of the clutch lever in interrupting power transmission.

Describes the switch for controlling distance and dimming lights.

Explains operation of the front wheel brake lever and its usage.

Describes how to operate the throttle grip to control engine speed.

Identifies the button for operating the horn.

Notes the fuel tank capacity and location of the filling hole.

Explains the function of the gear shift pedal.

Describes the operation of the rear wheel foot brake.

Details the procedure for using the kick starter.

Explains how to engage neutral gear using the hand lever.

Details checks for fuel, oil level, and tyre pressure before starting.

Outlines the procedure for starting the engine, including ignition and throttle.

Gives advice on running the engine idle until warm and on the kick starter.

Instructions on using the clutch and changing gears.

Details on adjusting ignition and engaging the clutch.

Lists maximum recommended speeds for different mileage intervals.

Procedures for shutting off gas, declutching, braking, and stopping the engine.

Specifies maximum speeds allowed during the initial 1300 miles.

Warns against tampering with sealed stops and speedometer seals.

Suggests a technique for running-in by alternating speed and coasting.

Recommends gradual speed increases after the first 1300 miles.

Details specific lubrication requirements during the running-in phase.

Detailed steps for removing the front wheel.

Detailed steps for removing the rear wheel.

Describes safety rims, tyre removal, and inner tube repair.

Instructions for mounting tyres and recommended pressure.

Step-by-step guide for cleaning Amal carburettors.

Details lubrication importance, chart reference, and oil level checks.

Advises against high-speed idling and forcing hills, and on valve clearance.

Step-by-step guide for adjusting valve clearance on R 51/66 models.

Step-by-step guide for adjusting valve clearance on R 61/71 models.

Details battery preparation, acid levels, charging, and storage.

Advises on checking and adjusting the sparking plug gap.

Guides on inspecting and adjusting contact breaker points and lubrication.

Details on adjusting play in brake levers and pedals.

Advice on gentle braking, using engine braking, and cooling brakes.

Recommends using petrol, brushes, sponges, and avoiding high pressure.

Advises oiling brake links/hinges and coating chrome parts.

Explains the four strokes: Suction, Compression, Working, and Exhaust.

Details the construction of the crankcase and cylinders.

Describes the crankshaft's construction and its lubrication system.

Explains the overhead valve system for R 51/66 models.

Explains the side valve system for R 61/71 models.

Details the drive mechanism for the camshaft.

Details the key components of the carburettor.

Explains how gears are changed using a pedal and hand lever.

Details the telescopic front fork, shock absorbers, and springing.

Advises on lubricating the rear wheel suspension.

Lists technical data including engine output and gear ratios for the R 51 SS.