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3

SAFETY

Read and understand the operating instructions before using.

Keep the area of operation clear of all persons, especially small children and pets.
Thoroughly inspect the area to be cleared and remove all door mats, sleds, boards, 
wires and other foreign objects. Use extreme caution when operating on or crossing 
gravel surfaces. Never direct discharge at bystanders or allow anyone in front of the 

snow thrower.

Do not place hands near rotating parts. Keep clear of the 

discharge opening at all times.

Do not place feet near rotating parts.

•  Never allow children to operate the equipment.
•  Never allow adults to operate the equipment without 

proper instruction.

•  Disengage all clutches and shift into neutral before 

starting engine.

•  Do not operate equipment without wearing adequate 

winter outer garments.

•  Wear substantial footwear which will protect feet and 

improve footing on slippery surfaces.

•  Check fuel before starting the engine. Do not remove 

the fuel cap or fill the fuel tank while the engine 
is running or hot. Do not fill the fuel tank indoors. 
Gasoline is an extremely flammable fuel.

•  Make sure the snow thrower height is adjusted to 

clear the type surface it will be used on.

•  Do not use the snow thrower without wheel weights 

attached to the tractor.

•  Never make any adjustments while the engine is 

running.

•  Always wear safety glasses or eye shield during 

operation or while performing adjustment or repair.

•  Do not place hands or feet near rotating parts. Keep 

clear of the discharge opening at all times.

•  Do not carry passengers.
•  After striking a foreign object, stop the engine, remove 

the wire from the spark plug and then thoroughly 
inspect the snow thrower for damage. Repair any 
damage before restarting and operating the snow 

thrower.

•  If the snow thrower starts to vibrate abnormally, stop 

the engine immediately and check for the cause. 
Vibration is generally a warning of trouble.

•  Stop the engine whenever you leave the operating 

position, before unclogging the snow thrower or 
making any adjustments or inspections.

•  Take all possible precautions when leaving the unit 

unattended. Disengage the attachment clutch lever or 

switch, lower the snow thrower, shift into neutral, set 

the parking brake, stop the engine and remove the key.

•  When cleaning, repairing or inspecting, make certain 

all moving parts have stopped. Disconnect the spark 
plug wire and keep it away from the plug to prevent 

accidental starting.

•  Do not run engine indoors except when transporting 

the snow thrower in or out of the building. Open the 
outside doors. Exhaust fumes are dangerous.

•  Do not clear snow across the face of slopes. Exercise 

extreme caution when changing direction on slopes. 
Do not attempt to clear steep slopes. Refer to the 
slope guide on page 35 of this manual.

•  Never operate the snow thrower without guards, 

plates or other safety protection devices in place.

•  Never operate the snow thrower near glass 

enclosures, automobiles, window wells, drop offs 
etc. without proper adjustment of the snow thrower 

discharge angle. 

•  Never run the snow thrower into snow at high speeds.
•  Do not overload the snow thrower capacity by 

attempting to clear snow at too fast a rate.

•  Never operate the snow thrower at high transport 

speed on slippery surfaces. Look behind and use care 
when backing up.

•  Watch for traffic and stay alert when crossing or 

operating near roadways.

•  Disengage power to the snow thrower when 

transporting or when not in use.

•  Use only attachments and accessories approved by 

the manufacturer of the snow thrower (such as wheel 
weights, counter weights, cabs etc.)

•  Never operate the snow thrower without good visibility.

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Summary of Contents for LST42F

Page 1: ...M NO 28051 rev 09 07 18 42 SNOW THROWER CAUTION Read Rules for Safe Operation and Instructions Carefully Safety Assembly Operation Maintenance Parts Husqvarna Technical Assistance 800 448 7543 Service...

Page 2: ...8 TROUBLESHOOTING 29 REPAIR PARTS ILLUSTRATION 30 32 34 REPAIR PARTS LIST 31 33 34 SLOPE GUIDE 35 PARTS ORDERING SERVICE BACK COVER IMPORTANT Rear wheel weights and tire chains are required to provide...

Page 3: ...g and operating the snow thrower If the snow thrower starts to vibrate abnormally stop the engine immediately and check for the cause Vibration is generally a warning of trouble Stop the engine whenev...

Page 4: ...L SIZE N K Q A 46938 43084 43182 43661 47631 47630 43350 44215 43682 44326 43080 48106 42849 43003 43088 43081 R19172410 47605 43070 44695 43082 47810 47572 46584 47598 43063 AA GG EE DD CC BB FF LL H...

Page 5: ...houlder Bolt N 2 Shear Bolt spare parts O 7 Lock Washer 3 8 P 7 Washer 1 4 Q 22 Washer 5 16 Extra washers included R 8 Washer 1 2 S 1 Washer 3 8 Thin T 3 Washer 3 8 REF QTY DESCRIPTION U 2 Bowed Washe...

Page 6: ...cket 12 Front Pulley Frame Bracket 2 13 V Belt Drive 56 48138 14 V Belt Drive 55 46989 15 V Belt Auger Attached to Housing Assembly 16 L H Hanger Bracket Outside Mounting 17 R H Hanger Bracket Outside...

Page 7: ...ove the tractor hood Refer to your tractor owner s manual for removal instructions FIGURE 2 RIGHT SIDE VIEW IMPORTANT Right hand R H and left hand L H side of the tractor are determined from the opera...

Page 8: ...BRACKETS AND SHOULDER BOLTS TO OUTSIDE OF FRAME STEP 5 SEE FIGURE 5 Remove the bolt if present in the hole directly behind the brake rod on the left side of the tractor frame Attach the L H Hanger Br...

Page 9: ...Use the longer 56 drive belt 48138 on tractors with manual attachment clutches Slightly loosen the hex bolt next to the flat idler pulley Install the drive belt down between the hex bolt and the flat...

Page 10: ...deck STEP 11 SEE FIGURE 11 Find the cable clip that is attached to the left side of the tractor frame underneath the footrest Open the clip and remove the mower clutch cable Do not remove the clip fro...

Page 11: ...the 5th link of the chain attached to the upper idler arm Install a 3 32 hairpin cotter in the 4th link of the chain attached to the lower idler arm FIGURE 15 STEP 17 SEE TABLE 1 Two different length...

Page 12: ...length belt may cause premature bearing or belt failure DRIVE BELT FLAT IDLER PULLEY HEX BOLTS PIVOT LOCK PIN use second hole SHOULDER BOLT 1 8 HAIRPIN COTTER L H HANGER BRACKET 1 8 HAIRPIN COTTER ENG...

Page 13: ...1 carriage bolt without a nut The bracket fastened to inside of frame must remain in place FRONT SUSPENSION BRACKET REPLACE BOLT IF PRESENT REMOVE BOLTS IF PRESENT FIGURE 20 RIGHT SIDE VIEW INSTRUCTI...

Page 14: ...e frame using a 3 8 x 1 carriage bolt and a 3 8 flanged nut Bolt head goes on inside of tractor frame Repeat for the R H side STEP 28 SEE FIGURE 28 Assemble a shoulder bolt and 3 8 flanged nut to the...

Page 15: ...side of the clutch idler assembly using two 5 16 x 1 hex bolts eight 5 16 washers and two 5 16 nylock nuts for each bracket Attach the two front pulley frame brackets to the inside of the clutch idler...

Page 16: ...4 SEE FIGURE 34 Assemble the short V belt onto the engine pulley and then onto the large pulley on top of the clutch idler assembly The belt must be placed to the inside of the engine pulley keeper th...

Page 17: ...f the chain FIGURE 35 CABLE OPERATED MANUAL ATTACHMENT CLUTCH FIGURE 37 HEX BOLTS DRIVE BELT FLAT IDLER PULLEY 46989 STEP 37 SEE FIGURE 37 Two different length drive belts are included with your snow...

Page 18: ...ctor frame as follows Hook the rear of the assembly onto the two shoulder bolts you installed on the tractor frame Lift the front of the assembly and attach it to the hanger brackets you installed usi...

Page 19: ...BELT PART 48138 TRACTOR TYPE DECK SIZE CLUTCH TYPE LT Lawn Tractor 48 Electric LT Lawn Tractor 38 42 46 Electric TABLE 2 STEP 41 SEE FIGURE 41 Turn the clutch idler assembly upside down Hook the long...

Page 20: ...s you assembled to the inside of the tractor frame Lift the front of the assembly and attach it to the R H and L H hanger brackets using two pivot lock pins and 1 8 hairpin cotters FIGURE 45 RIGHT SID...

Page 21: ...FIGURE 47 RIGHT SIDE VIEW 5 16 NYLOCK NUT 5 16 x 1 3 4 HEX BOLT ASSEMBLY OF THE SNOW THROWER STEP 50 SEE FIGURE 49 Tilt the snow thrower back down to the ground Remove the nylon tie which fastens the...

Page 22: ...e snug but do not dig into the plastic chute keepers Position the crank rod spiral see figure 51 so that it does not rub against the bottoms of the notches in the chute flange Tighten the nuts Turn th...

Page 23: ...passes over the top of the auger pulley and then twists 1 4 turn to pass underneath each side idler pulley The V side of the belt must mate with the grooves of the pulleys FIGURE 56 VIEWED FROM UNDERN...

Page 24: ...reviewthe following checklist to help ensure that you will obtain the best performance from your snow thrower 1 All assembly instructions have been completed with all bolts and nuts properly tightened...

Page 25: ...eared Refer to the Service and Adjustments section Make sure the tractor engine has the correct oil for winter operation SAE 5W 30 Refer to tractor owner s manual HOW TO START YOUR SNOW THROWER The tr...

Page 26: ...For maximum snow removal and discharge maintain high engine r p m full throttle It is advisable to operate the lawn tractor at a slow ground speed 1st gear for safe and efficient snow removal In deep...

Page 27: ...same height to keep the housing and the scraper plate level See figure 60 LIFT RELEASE CABLE ADJUSTMENT If the lift rod does not lock the snow thrower securely in the transport position loosen the up...

Page 28: ...dle in the down position to decrease belt tension Release the spring tension from the auger belt idler arm on the bottom of the clutch idler assembly Remove the auger drive belt from the clutch idler...

Page 29: ...g contact with 4 Allow snow thrower to cool to the snow thrower outdoor temperature before using Front wheels slide instead of steering Snow thrower rides up over snow 1 Object jammed in spiral auger...

Page 30: ...39 8 53 23 65 65 4 1 32 59 10 47 66 45 64 27 27 34 37 19 23 24 30 38 46 46 43 43 21 49 17 48 62 60 63 19 23 13 30 23 30 8 23 15 23 23 23 30 17 23 61 55 44 36 20 22 14 26 18 36 20 68 67 30 38 22 33 21...

Page 31: ...td Wrt 31 47615 2 Bearing Flange 32 42844 1 Bearing Ball 33 43182 1 Hex Bolt 5 16 18 x 3 4 34 42953 4 Bearing Split 3 4 35 24279 2 Skid Shoe REF PART NO QTY DESCRIPTION 36 48015 4 Washer Nylon 37 2745...

Page 32: ...11 12 12 13 13 14 14 16 17 17 18 18 27 25 25 31 31 32 33 36 44 70 63 49 53 52 44 44 41 42 45 39 46 47 30 43 48 51 50 54 55 7 58 18 63 63 63 56 66 64 62 62 40 52 19 53 65 65 59 59 5 37 34 35 59 38 59...

Page 33: ...1 8 32 25678 1 Plate Side R H 33 25679 1 Plate Side L H 34 49916GY 1 Tube Lift Handle 35 49912 1 Trigger and Lift Cable Assembly 36 43070 2 Washer 3 8 REF PART NO QTY DESCRIPTION 37 49266 1 Screw Oval...

Page 34: ...1 Belt V Type Auger 28 47044 1 Pulley V Type 4 29 47025 1 Hex Bolt 5 16 18 x 3 1 2 30 43432 3 Hex Bolt 3 8 16 x 2 1 2 31 43054 3 Hex Bolt 3 8 16 x 2 32 24571 1 Spacer 33 24472 1 Spacer Pivot 34 43070...

Page 35: ...manual CAUTION DO NOT OPERATE YOUR TRACTOR AND SNOW THROWER ON A SLOPE IN EXCESS OF 10 DEGREES BE SURE OF YOUR TRACTOR S TOWING AND BRAKING CAPABILITIES BEFORE OPERATING ON A SLOPE AVOID ANY SUDDEN TU...

Page 36: ...ced or transmitted in any form or by any means electronic or mechanical including photocopying or recording or by any information storage or retrieval system without the express written permission of...

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