Читать книгу Motorcycle, Solo (Harley-Davidson Model WLA) - United States. War Department - Страница 11

a. Practice will enable a rider to judge at what rate of speed the motorcycle should be moving before he shifts from a lower to higher gear, and engine should never be permitted to labor unduly, when a shift of gears, higher to lower, would improve operation.

(1) Operator must not look down at gear shifter when shifting gears, but keep his eyes on the road ahead. Do not ride the clutch. The operator’s foot should rest on clutch foot pedal only when he is operating it. When shifting gears, disengage clutch fully to avoid gear damage and shifting difficulties. CAUTION: Many transmissions are ruined through failure to disengage clutch fully when shifting gears.

b. Braking. Rear wheel service brake must be in such condition that medium‐hard application will cause rear wheel to lock. Application of service brake should be gradual, with just enough force to accomplish desired result.

(1) Auxiliary front wheel brake, when used in conjunction with service brake, must be applied with caution, especially on wet, muddy, or slippery roads.

(2) After passing through water, the brakes should be set slightly, and the vehicle operated for a short distance, until sufficient heat has been generated to dry the brakes.

c. Avoid Low Gear Operation. Always operate vehicle in highest gear possible, consistent with tactical situation, speed required, power required, and kind and nature of road substance, to prevent overheating of engine.

d. High Speed Tips. Only experienced riders should indulge in high‐speed riding. A motorcycle operated for long distances at high speed must be given closer than ordinary attention to avoid serious engine overheating with consequent damage. For better motorcycle service, apply the following suggestions:

(1) Develop habit of frequently snapping throttle shut for an instant when running at high speed. This draws additional lubrication to piston and cylinder and assists in cooling engine.

(2) In cool weather, operate engine slowly until it is thoroughly warmed up, to avoid damage to pistons, rings, cylinders, and other parts before oil is warm enough to circulate freely.

(3) If handle bar windshield and leg shields are used, engine is more likely to overheat with continued high‐speed riding. Watch this carefully.

(4) Adjust “steering damper” for best control of motorcycle consistent with riding speed and condition and nature of road.