Simplicity 755, 555, 1694433 Roller Chain Replacement, Shear PIN Replacement, Keeper link, Pins

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Service

ROLLER CHAIN REPLACEMENT

NOTE: This procedure does not apply to models that use an “endless” chain.

1.Remove gas from fuel tank and run engine until it stops running from lack of fuel.

2.Disconnect spark plug wire and fasten it away from the spark plug.

3.Tilt the snowthrower forward and carefully rest unit on the auger end.

4.Rotate the wheel to locate the roller chain master link.

5.Remove the keeper link, master link and chain.

6.Install new chain and master link as shown in Figure 30.

7.Return snowthrower to upright operating position.

8.Connect spark plug wire and fill fuel tank.

Keeper link

(Must install towards wheel side

with open end trailing.)

Master link

Direction of travel

Figure 30. Roller Chain Master Link

SHEAR PIN REPLACEMENT

WARNING

Do not go near the discharge chute or auger when the engine is running. Do not run the engine with any cover or guard removed.

Under most circumstances, if the auger strikes an object which could cause damage to the unit, the shear pin will break. (This protects the gear box and other parts from damage.)

The shear pins are located on the auger shaft as shown in Figure 31. To replace the shear pins, tap out broken pin with a pin punch, and install a new shear pin and cot- ter pin. Spread the legs of the new cotter pin fully. Do

NOT replace shear pins with anything other than the correct grade replacement shear pin. See the REPLACEMENT PARTS section at the back of this man- ual for the correct part numbers. (Use of bolts, screws or a harder shear pin will lead to damaged equipment.)

Shear

Pins

Figure 31. Shear Pin Replacement

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Contents Print Vendor Instructions Operator’s ManualsPage OPERATOR’S Manual ModelsPage Table of Contents Safety Rules & Information Do NotSafety Rules ChildrenMaintenance and Storage TrainingPreparation OperationIdentification Numbers CE Identification TAG MarkingsNorth American CE ModelsSafety Decals GeneralNorth American Model Decals CE Model DecalsCE Safety Icons & Compliance Specs Features, Controls, & Operation Features & Controls Control LocationsEngine Controls Starting ControlsUnits with Optional Electric Start Manual StartGround Speed Controls Auger ControlDeflector Controls Scraper HeightOperation Checks Before Each START-UPStarting the Engine Engine Speed Operating the SnowthrowerGround Speed Selector Deflector Scraper BAR & Skid ShoesKlik-Pin Outer Hole FREE-WHEELING Traction Drive LockAfter Each USE Regular ScheduleChecking Tire Pressure Check Auger Gear Case LubricationLubrication Check / Lubricate FREE-HAND LinkageStarting After Long Term Storage StorageLong Term Storage Longer than 30 Days Troubleshooting Engine fails to startEngine starts hard or runs poorly Auger does not rotateScraper bar does not clean hard Auger does not stop when augerAuger rotates, but snow is not Thrown far enoughAdjustments Traction Drive Clutch ROD AdjustmentInitial Adjustment Run-In AdjustmentDischarge Chute Worm Assembly Adjustment Worm AssemblyAdjustment Screw Discharge ChuteRelease Auger Control. Auger must stop within 5 seconds Auger Drive Clutch ROD AdjustmentDrive Belt Adjustment Belt Cover Checking Auger Belt & Belt Guide AdjustmentsAdjusting Auger Drive Belt Adjustments & Service Drive Belt ReplacementAdjusting Auger Belt Guide Traction Drive Belt ReplacementService Auger Drive Belt ReplacementRoller Chain Replacement Shear PIN ReplacementPins Keeper linkSpecifications DimensionsEngine ChassisTechnical Manuals Replacement PartsMaintenance Items

1694434, 1694433, 555, 755 specifications

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