From RROCA-info

20-25 HP Owner's Handbook (Combining NOs. 9, X, XI, XII, XIV, XV, XVI editions)

For chassis series: GXO, GOS, GHW, GTZ, GNC, GFE, GOH, GGP, GPS, GRW, GYZ, GRC, GAF, GEH GDP, GFT, GAW, GBA, GKC, GSF, GBJ, GWP, GBT, GEX, GGA, GED, GRF, GLJ, GLR, GKT, GWX, GHA, GMD, GLG, GCJ GSR, GAU, GDX, GXB, GYD, GPG, GXK, GTR, GMU, GSY, GUB, GAE, GHG, GBK, GNS, GZU, GLZ, GLB, GWE, GYH, GTK

CONTENTS	PAGE
SERVICE FACILITIES FOR ROLLS-ROYCE CARS	4
LEADING PARTICULARS OF CHASSIS	5
CHAPTER I.- STARTING THE ENGINE AND DRIVING THE CAR	9
Starting the Engine - Hand Starting - Ignition Control-Throttle Control - Gear Changing - Battery Charging - Lighting Control and Switch - Radiator Shutters - Controllable Shock Dampers - Over-heating - Fitting of Snow Chains.
CHAPTER II.-- PERIODIC LUBRICATION AND ATTENTION (Part 1)	15
Lubricants recommended – Diagrams of Lubrication Systems
CHAPTER II.-- PERIODIC LUBRICATION AND ATTENTION (Part 2)	16
Capacities - Chassis Lubrication System – Drip Plugs _ Front Axle System – The Oil Gun - Daily Maintenance – Weekly - Every 500 miles - Every 1,000 miles - Every 2,500 miles - Every 5,000 miles - Every 10,000 miles - Every 20,000 miles - Care of Wheels and Hubs - Replacement Tyres - Balancing Road Wheels.
CHAPTER III.- FUEL SYSTEM	37
Fuel Feed - Fuel Filters - The Carburetter (previous to Chassis GYD-25) -Cleaning the Air Valve - Setting of the Jets – Mixture Control - Slow Running - Starting Carburetter - Float Feed Mechanism - Crankcase Breather Pipe to Carburetter - Dismantling the Carburetter - The Carburetter (Chassis GYD-25 and onwards) - Faulty Adjustment of Carburetter - Idling and Low-Speed Adjustment - Automatic Air Valve - Float Feed Mechanism.
CHAPTER IV.--ADJUSTMENT OF BRAKES	53
General - Adjustment of Rear and Front Brakes (Chassis previous to GAF-1) - Adjustment of Foot and Hand brakes – (Chassis GAF-1 and onwards) - Adjustment of Servo.
CHAPTER V.-- THE CLUTCH	61
Clutch Pedal Adjustment.
CHAPTER VI.-- COOLANT SYSTEM	63
Coolant Pump - Coolant Level - Frost Precautions - Fan.
CHAPTER VII.- ELECTRICAL SYSTEM	65
General - Battery - Battery Ignition – Magneto Ignition - Sparking Plugs - Electrical Fault Location.
GUIDE TO MAIN SERVICE STATION	72
GUIDE TO CREWE SERVICE STATION	73