Briggs & Stratton 1738 Traction Drive Tension, Adjustments, Initial Adjustment, Run-In Adjustment

Adjustments

TRACTION DRIVE TENSION

Initial Adjustment

1.Lift the bellcrank arm (C, Figure 21) up as far as it will go.

2.While holding the bell crank arm (C) up, adjust the cable until all the slack is removed.

3.Back the adjustment screw (E) out 7-8 turns. Tighten nut (D).

4.Start engine and check that the system disengages when the control is released.

WARNING

Do not over-tighten, as this may cause traction drive to engage without depressing the traction drive control (bellcrank arm must remain in down position).

Verify that the cables are not over-tightened: With speed selector in position 1 and traction drive control fully released, push snowthrower forward. The unit should move forward freely.

If unit does not move forward freely, the cable has been over-tightened. To remedy, loosen tension on clutch cable slightly, and recheck.

Run-In Adjustment

ALL MODELS

1.After 5 hours of use, check for proper adjustment. Readjust clutch cable if necessary by increasing ten- sion on cable. A small amount of bellcrank arm movement is permissible if unit passes operating checks described in the Caution above.

A

D

E

C

B

Figure 21. Traction Drive Adjustment

A.Adjusting Flats

B.Spring Hook

C.Bellcrank Arm

D.Nut

E.Adjustment Screw

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