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  4. MOV and MAC
  5. F131-3R Instruction Book 1937
  6. Running In A New Engine

The full power and maximum performance will not be available until the engine has been thoroughly run in, on account of bearings, etc., being a very accurate fit. As the machine is used, however, and bearings, etc. run in or bed down a progressive improvement will be noticeable.

For the first 500 miles at least full throttle driving should be avoided and the maximum speed should be kept below approximately 35 miles per hour. Avoid allowing the engine to pull hard on a large throttle opening as when going up hill, but make full use of the gearbox so as to ease the load on the engine. Short bursts of speed may be indulged in increasing the speed and duration as the mileage increases. It is in fact beneficial to vary the speed as much as possible during the running in period. An engine is usually quite free after about 1000 miles.

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  • Velocette Documents
    • GTP Manuals
      • F40/5R GTP Instruction Book 1951
    • KSS, KTS Manuals
      • F236/4R Mk. II OHC Instruction Book 1950
      • F42/3R OHC Models 1925-1931 Instruction Book
    • MAC Manuals
      • F469/4R MAC Service Guide 1965
      • F466/2R MAC Owner's Handbook 1955
      • F50/7R MAC Rigid Frame Service Manual 1955
      • F50/4R Supplement
    • MOV and MAC
      • F131-3R Instruction Book 1937
    • MSS Manuals
      • F477 Owners Handbook 1954
    • Venom, Viper, MSS
      • F485/1R Owner's Handbook 1956
      • F484/9R Service Guide 1967
      • F484/11R Service Guide 1971
    • Valiant Manuals
      • F62-1R Service Manual