Briggs & Stratton 1738, 1732, 1628 Traction Drive Tension, Initial Adjustment, Run-In Adjustment

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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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Contents OPERATOR’S Manual ModelsPage Table of Contents Safety Rules & Information Operating SafetySafety Rules & Information Moving PartsTraining Ignition System Page Decals DecalsNorth American Model Decals CE Model DecalsDecals and Safety Icons Safety IconsALL Model Decals Shift Decal leftIdentification Numbers CE Identification TAG MarkingsNorth American CE ModelsControl Locations Features, Controls & OperationManual Rotator Electric Model Features & Controls Operation Checks Before Each START-UPStarting Controls Electric StartManual Start Snow Series MaxStarting the Engine Stopping the Engine Operating the Snowthrower Clearing a Clogged Discharge ChuteGround Speed Selector Engine SpeedDeflector Scraper BAR & Skid ShoesModels with Chute Deflector Knob Models with Remote Deflector ControlFull Traction Easy Turn Traction Easy Turn Freewheeling and Traction Drive LockAfter Each USE StorageStorage Regular Maintenance Maintenance ScheduleChecking Tire Pressure Auger Gear Case LubricationRegular Maintenance LubricationCheck / Lubricate FREE-HAND Linkage Lubricate Auger Shaft AssemblyLubricate as shown in Figures Troubleshooting Troubleshooting, Adjustments & ServiceProblem Possible Cause Remedy Troubleshooting Adjustments Speed Selector AdjustmentAuger Drive Tension Release auger control. Auger must stop within 5 secondsRun-In Adjustment Initial AdjustmentTraction Drive Tension Pinion Gear Adjustment Manual Discharge Chute Control Linkage AdjustmentGear Bracket Adjustment Easy Turn Cable Adjustment Adjustments & ServiceShear PIN Replacement Belt Replacement Belt Cover ScrewsService Tion Drive TensionSpecifications DimensionsEngine ChassisParts & Accessories Replacement PartsMaintenance Items Technical Manuals