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Difficulties in starting the engine

Malfunction
The engine only starts after more than three successive attempts in summer, or more than five in winter.
Possible Causes

Choke open when starting a cold engine.

Fuel mixture too dense or too thin.

Water build-up in the fuel.

Air filter blockage.

Muffler blockage.

Engine blow-by causing drop in cylinder pressure.

Fuel filter or fuel tube blockage.

Excessive carbon deposit or inappropriate gap in the spark plug.

Low battery.

Poor contact between circuit connectors or binding posts.

Malfunction caused by other components in the engine, electrical system or oil circuit.

Motorcycle veering to one side

Malfunction
Uneven use of force between left and right hands required to drive in a straight line. Any slight relaxation leads to veering in one direction.
Possible Causes

Stiff handlebars.

Warped handlebars.

Handlebars unresponsive or unsmooth.

Poor tire assembly or abnormal tire wear.

Warped wheel.

The left and right chains not meshed symmetrically.

Warped chassis or cradle.

Unequal spring preloads on the front and rear shock absorbers, or uneven shock absorber fluid levels.

Other causes.

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