JA Purity IV JA Purity IV
JA Purity IV JA Purity IV
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  4. KSS, KTS Manuals
  5. F42/3R OHC Models 1925-1931 Instruction Book
  6. Instructions for Fitting and Adjusting Foot Gear Change

This control is supplied complete (price 35/-) and can be fitted to any Velocette having a Gearbox incorporating internal Selector and Plunger. It is fitted as standard to the model KTT.

Remove existing hand control lever and rod, also the three top set pins securing the gear box and cover. Exchange kick starter crank for the bent crank provided. Fit on the foot control by means of the three longer set pins provided. To adjust rod for length proceed as follows :—

Move outside striking lever on gearbox (A) till middle gear is engaged (it will then be approximately horizontal). Move gear shift lever of foot control (B) till it is approximately horizontal. This is the middle gear position. It will be found that it is possible to move the end of the lever about 3/8" up and down between two points at which it feels to come solid against the operating pawls. It is now necessary to lengthen or shorten the rod till when connected up, the lever is exactly midway between these two points.

Removing foot lever (C) and cover plate (D) exposes to view the pawls (E). If all is correctly fitted the clearance between the pawls and the ratchet teeth will be equal front and rear.p14 gbox

This adjustment is important. The position of the foot lever (C) is adjustable to suit the rider by means of the slots shown.

When all is correctly fitted, force in a good light grease such as Light Castrolease through the nipple with a grease gun till it starts to ooze out. Occasional application of grease gun will keep all internal parts lubricated and exclude. mud and water. Lubricate ball joint and bottom knuckle joint occasionally with oil.

No other attention is necessary. Do not take the device to pieces unnecessarily, particularly do not remove the centralising springs as they are difficult to replace.

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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