RESOLUCION DE PROBLEMAS

7.Tire lentamente de la cuerda de arranque para traer el pistón hacia la parte superior de su recorrido (conocido como punto muerto superior). Verifique que:

El pistón se encuentre en la parte superior de su recorrido mientras mira dentro del orificio de la bujía de encendido (Fig. 27).

Ambos brazos oscilantes se mueven con libertad, y ambas válvulas están cerradas

De no ser así, repita este paso.

8.Deslice la galga entre el brazo oscilante y el resorte de retorno de la válvula. Mida el huelgo entre el vástago de la válvula y el brazo oscilante (Fig. 29). Realice esto en las válvulas de entrada y de escape.

El huelgo recomendado para las válvulas de entrada y de escape es 0,076 – 0,152 mm (0,003 – 0,006 pulgadas). Use un calibrador regular de automóvil de 0,127 mm (0,005 pulgadas). El calibrador debe deslizarse entre el balancín y el vástago de la válvula con una ligera cantidad de resistencia, sin doblarse (Fig. 28 y 29).

Brazos

Tuercas de ajuste

oscilantes

ENTRADA

 

 

ESCAPE

Galga

Fig. 28

Tuerca de ajuste

Balancín

0,076–0,152 mm (,003–,006 pulg.)

Calibrador

Vástago de la válvula

Fig. 29

9.Si el huelgo no se encuentra dentro de las especificaciones:

a.Gire la tuerca de ajuste con una llave de 8 mm (5/16 pulgadas) o una guía de tuercas (Fig. 29).

Para incrementar el huelgo, gire la tuerca de ajuste en sentido antihorario.

Para reducir el huelgo, gire la tuerca de ajuste en sentido horario.

b.Vuelva a inspeccionar ambos huelgos, y ajuste si es necesario.

10.Vuelva a instalar la cubierta del brazo oscilante utilizando una nueva junta. Ajuste el tornillo a 2,2–3,4 N•m (20–30 pulgadas•libra).

11.Vuelva a instalar la cubierta del motor. Verifique la alineación de la cubierta antes de ajustar los tornillos. Ajuste los tornillos.

12.Inspeccione la bujía de encendido y vuelva a instalar. Lea Cambio de la Bujía de encendido.

13.Vuelva a colocar el cable de la bujía de encendido.

E19

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Craftsman 316.29271 manual Entrada

316.29271 specifications

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