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9

SECTION 5:  MAKING ADJUSTMENTS

WARNING: 

NEVER attempt to make any

adjustments while the engine is running, except
where specified in the operator’s manual.

Shave Plate 

To check the adjustment of the shave plate, place 
the unit on a level surface. See  Figure 12. The 
wheels, shave plate and augers should all contact 
level surface. Note that if the shave plate is 
adjusted too high, snow may blow under the 
housing. If the shave plate wears out excessively, 
or the unit will not self-propel, the shave plate may 
be adjusted too low.

NOTE:  On new units or units with a new shave plate
installed, the augers may be slightly off the ground.

Figure 12

To adjust, tip the snow thrower back so that it rests 
on the handle. Loosen the lock nuts and bolts which 
secure the shave plate to the housing. See Figure 
13. Move the shave plate to desired position and 
retighten the nuts and bolts. Make certain all nuts 
and bolts are tightened securely.

Figure 13

Belt Tension 

Periodic adjustment of the belt tension may be required 
due to normal stretch and wear on the belt. If augers 
hesitate while turning although engine maintains  same 
speed, adjust tension following instructions below.

The upper hole in the control handle provides 
adjustment for belt tension. To adjust, disconnect 
the “Z” end of control cable from the bottom hole in 
the control handle. See Figure 14 . Hook the cable 
into the upper hole in control handle as shown here. 

Figure 14

If additional adjustment is required, follow steps below.  

Remove the belt cover by removing five hex screws 
that hold it in place. See Figure 16.

There are three adjustment holes provided in the 
idler bracket assembly. See Figure 15. To adjust, 
move the extension spring on the end of the clutch 
cable to the next higher adjustment position on the 
idler bracket assembly. Reassemble belt cover. 

Figure 15

Carburetor

WARNING: 

If any adjustments need to be

made to the engine while the engine is running
(e.g. carburetor), keep clear of all moving
parts. Be careful of muffler, engine and other
surrounding heated surfaces.

Refer to the separate engine manual, packed with 
your unit, for carburetor adjustment information.

Augers

Shave Plate

Wheels

Nuts & Bolts 

Upper

Hole

Clutch
Cable

Control 

Housing

Auger 

Pulley

Idler

Bracket

Spring on 

End of Clutch

Cable

High Position

Middle Position

Low Position

Содержание 421R

Страница 1: ... unless the engine s exhaust system is equipped with a spark arrester meeting applicable local or state laws if any If a spark arrester is used it should be maintained in effective working order by the operator In the State of California the above is required by law Section 4442 of the California Public Resources Code Other states may have similar laws Federal laws apply on federal lands A spark a...

Страница 2: ... authorized dealer You can locate the model number by standing behind the unit in the operating position and looking down at the dash panel A sample model plate is explained below For future reference please copy the model number and the serial number of the equipment in the space below CALLING CUSTOMER SUPPORT If you have difficulty assembling this product or have any questions regarding the cont...

Страница 3: ...r repair to protect your eyes Thrown objects which ricochet can cause serious injury to the eyes 3 Do not operate without wearing adequate winter outer garments Do not wear jewelry long scarves or other loose clothing which could become entangled in moving parts Wear footwear which will improve footing on slippery surfaces 4 Use a grounded three wire extension cord and receptacle for all units wit...

Страница 4: ... care and good judgment Contact your dealer or telephone 1 800 528 1009 for assistance and the name of your nearest servicing dealer Maintenance And Storage 1 Never tamper with safety devices Check their proper operation regularly 2 Disengage all clutch levers and stop engine Wait until the auger impeller come to a complete stop Disconnect the spark plug wire and ground against the engine to preve...

Страница 5: ... Assembly WARNING Disconnect the spark plug wire and ground it against the engine to prevent unintended starting Raising Upper Handle Loosen the hand knob on each side of the handle Remove packing material if any Figure 3 Raise the upper handle in the direction shown in Figure 3 till it clicks into the operating position Make sure not to pinch or crimp the cable Tighten the hand knobs Attaching Co...

Страница 6: ...snow thrower See Figure 6 Rotate the crank to align holes and insert the cotter pin Bend ends of cotter pin in opposite directions to secure See Figure 6 Figure 6 Secure eyebolt with 5 16 saddle washer and hex nut The cupped side of washer goes against the handle Adjust lower hex nut until the eyebolt is positioned so that the chute crank turns freely does not bind Move upper hex nut down against ...

Страница 7: ...sengage the augers The snow thrower is designed to be propelled by the rotation of the augers Pull the control handle back against the upper handle to engage the augers release to disengage Chute Crank Located on right side of dash panel the chute crank determines the direction that snow will be discharged Turn clockwise to discharge snow to the left turn counterclockwise to discharge to the right...

Страница 8: ...he auger control handle See Figure 11 As the snow thrower starts to move maintain a firm hold on the handle and guide the snow thrower along the path to be cleared Release the auger control handle to stop the snow throwing action and the forward motion Figure 11 Stopping Engine Run the engine for a few minutes before stopping to help dry any moisture on the engine To stop engine Turn ignition key ...

Страница 9: ...ugers hesitate while turning although engine maintains same speed adjust tension following instructions below The upper hole in the control handle provides adjustment for belt tension To adjust disconnect the Z end of control cable from the bottom hole in the control handle See Figure 14 Hook the cable into the upper hole in control handle as shown here Figure 14 If additional adjustment is requir...

Страница 10: ... Push down on the idler pulley and slip the belt off the auger pulley Reassemble new belt See Figure 17 Reinstall the belt cover Figure 17 Replacing Shave Plate The shave plate is subject to wear It should be checked periodically There are two wearing edges and the shave plate can be reversed See Figure 13 Remove the four carriage bolts and hex lock nuts which attach it to the snow thrower housing...

Страница 11: ... STORAGE WARNING Never store engine with fuel in tank indoors or in enclosed poorly ventilated areas where fuel fumes may reach an open flame spark or pilot light as on a furnace water heater clothes dryer or other gas appliance Clean snow thrower thoroughly Lubricate as instructed above with a light oil Follow Storage instructions in the Engine Manual Store in a clean dry area Block the snow thro...

Страница 12: ...rheats 1 Gasoline and oil not mixed correctly 2 Carburetor out of adjustment 1 Drain fuel tank and refill with proper fuel mixture 2 Refer to engine manual Loss of power 1 Spark plug wire loose 2 Vent in gas cap plugged 3 Exhaust port plugged 1 Connect and tighten spark plug wire 2 Clear vent 3 Clean port Excessive vibration 1 Loose parts or damaged auger 1 Stop engine immediately and disconnect s...

Страница 13: ...able Housing w o Throttle 9 747 0956 Auger Bail Gull Wing 10 749 0711A Upper Handle Gull Wing 5 9 10 7 4 8 3 6 2 7 4 1 NOTE For painted parts please refer to the list of color codes below Please add the applicable color code wherever needed to the part number to order a replacement part For instance if a part numbered 700 xxxx is painted Cub Yellow the part number to order would be 700 xxxx 0716 C...

Страница 14: ...14 SECTION 10 Model 421R 7 22 10 46 37 31 34 13 21 38 3 30 35 6 27 39 40 1 20 14 6 35 30 6 5 28 25 45 42 13 44 7 22 33 9 17 18 15 4 2 11 26 19 26 16 32 23 12 36 41 8 ...

Страница 15: ...9 Lock Washer 30 741 0600 Ball Bearing 31 746 0910A Cable Clutch 32 748 0234 Spacer 33 749 0796 Handle Lower 34 756 0313 Flat Idler 35 784 5174 Bearing Cup 36 784 5176 Cover Belt 37 784 5175B Idler Brake Bracket 38 684 0114 Blower Housing 39 784 5485 Auger Ass y Comp 40 753 0613 Auger Rubber Replacement 41 710 0352 Hex Washer Screw 42 784 5720 Crank Bracket 43 710 0451 Cap Screw 44 736 0242 Bell W...

Страница 16: ...16 Model 421R 5 3 5 20 29 22 16 7 4 6 23 8 9 27 2 10 28 26 21 7 25 7 13 15 14 19 18 24 11 17 ...

Страница 17: ...5 1425 Switch Key Recoil Start 17 726 0100 Push Cap 18 731 1089A Choke Cover 19 731 1133B Spilling Cup 20 731 2109 Shroud 21 Beige 21 735 0234 Rubber Grommet 22 736 0119 Lock Washer 23 736 0185 Flat Washer 24 736 0225 Internal Lock Washer 25 736 0451 Saddle Washer 26 747 0697 Eyebolt 27 747 0737 Upper Chute Crank 28 750 0785 Spacer 29 7510009636 Mitten Grip Handle NOTE For painted parts please ref...

Страница 18: ...1 0535 Fuel Line Hose 13 751 0540A Fuel Tank 2 Quart 14 751 0800 Fuel Cap 15 754 0101A V Belt 16 756 0416B V Pulley Half 17 756 0475 V Pulley Half 14 7 13 6 6 12 3 1 10 4 11 10 4 8 8 5 5 15 17 16 9 2 NOTE For painted parts please refer to the list of color codes below Please add the applicable color code wherever needed to the part number to order a replacement part For instance if a part numbered...

Страница 19: ...19 Model 421R ...

Страница 20: ...adet equipment used commercially is warranted for one year only Commercial use is defined as either having hired operators or used for income producing purposes Items not covered The warranty does not cover routine maintenance items such as lubricants filters oil fuel air and hydraulic cleaning tune ups brake and or clutch inspection adjustments made as part of normal maintenance blade sharpening ...

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