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Professional Shop Manual

221 HP/LHP Snow Throwers

NOTE:

These materials are for use by trained technicians who are experienced in the service and repair of outdoor power

equipment of the kind described in this publication, and are not intended for use by untrained or inexperienced individuals.
These materials are intended to provide supplemental information to assist the trained technician. Untrained or inexperi-
enced individuals should seek the assistance of an experienced and trained professional. Read, understand, and follow all
instructions and use common sense when working on power equipment. This includes the contents of the product’s Oper-
ators Manual, supplied with the equipment. No liability can be accepted for any inaccuracies or omission in this publication,
although care has been taken to make it as complete and accurate as possible at the time of publication. However, due to
the variety of outdoor power equipment and continuing product changes that occur over time, updates will be made to these
instructions from time to time. Therefore, it may be necessary to obtain the latest materials before servicing or repairing a
product. The company reserves the right to make changes at any time to this publication without prior notice and without
incurring an obligation to make such changes to previously published versions. Instructions, photographs and illustrations
used in this publication are for reference use only and may not depict actual model and component parts.

© Copyright 2011 MTD Products Inc. All Rights Reserved

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Summary of Contents for Cub Cadet 221 HP

Page 1: ...ied with the equipment No liability can be accepted for any inaccuracies or omission in this publication although care has been taken to make it as complete and accurate as possible at the time of publication However due to the variety of outdoor power equipment and continuing product changes that occur over time updates will be made to these instructions from time to time Therefore it may be nece...

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Page 3: ...pter 3 Auger Belt And Pulleys 17 Belt 17 Auger pulley 18 Engine pulley 19 Idler pulley and idler arm 20 Rubber auger spiral replacement 22 Auger 23 Auger bearings 24 Control cable 26 Chapter 4 Auger Housing Components 27 Shave plate 27 Upper discharge chute manual 27 Upper discharge chute remote controlled 28 Lower discharge chute 30 Chute ring gear manual 31 Chute rotating gears joy stick 32 Joy ...

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Page 5: ...TD or Cub Cadet be liable for poor text interpretation or poor execution of the proce dures described in the text If the person using this manual is uncomfortable with any procedures they encounter they should seek the help of a qualified technician or Cub Cadet Technical Support Safety This Service Manual is meant to be used along with the Operator s Manual Read the Operator s Manual and familiar...

Page 6: ...ootwear when working around any machinery Hearing protection in noisy environments Chemically resistant gloves when working with chemicals or solvents Respirator when working with chemical or solvents Appropriate tinted eye protection when cutting or welding Flame resistant headgear jacket chaps when cutting or welding WARNING WARNING CAUTION CAUTION Remember that some hazards have a cumulative ef...

Page 7: ...p by step procedure guide that does not require the user to hunt for informa tion Lubricant quantity and specification may be noted in the part of the text that covers maintenance and again in the section that covers assembly They may also be summarized in tables along with special instructions Whichever method is more appropriate will be used In many cases the information will be found in several...

Page 8: ...Auger housing 710 Customer number The serial number is 1I150B20363 The serial number reads as follows 1 Engineering level I Month of production I September 15 Day of the month 0 Last digit of the year B Plant it was built in 2 Assembly line number 0363 Number of unit built Additional technical and service information may also be available to our company authorized service center per sonnel through...

Page 9: ...approved for these engines are the F6RTC part 951 10292 See Figure 2 1 1 Remove the rear engine cover by following the proce dures described in the rear engine cover section of this chapter 2 Disconnect the high tension lead from the spark plug and ground it well away from the spark plug hole 3 Remove the spark plug using a 13 16 or 21mm wrench NOTE A flexible coupling or wobbly extension may help...

Page 10: ...ded to it is sometimes referred to as oxygenated fuel The extra oxygen carried by the eth anol increases the oxidation of the fuel This speeds up the process that causes the fuel to go bad Excessive alcohol in fuel creates a lot of problems for gasoline engines One of the biggest problems is that alco hol attracts and holds water This corrodes the metal components of the fuel system especially the...

Page 11: ...move the four bolts that secure the valve cover using a 10mm wrench and remove the valve cover from the engine NOTE If care is taken not to damage the valve cover gas ket it can be re used 6 Slowly pull the starter rope until air can be heard coming out of the spark plug hole 7 Confirm that the piston is at Top Dead Center on the compression stroke See Figure 2 5 The compression stroke can be dist...

Page 12: ...m nut to a torque of 80 106 in lbs 9 12 Nm using a 10 mm wrench 13 Double check the clearance after tightening the jam nut to confirm that it did not shift Re adjust if necessary 14 Rotate the engine through several compression cycles Observe the movement of the valve gear Return the piston to TDC compression stroke and re check the valve lash to confirm consistent movement of the valve gear inclu...

Page 13: ...cing the spark plug adjusting the valve lash To remove the rear engine cover 1 Remove the choke extension lever 2 Remove the three rear engine cover screws indi cated by the arrows in Figure 2 8 using a 3 8 wrench 3 Rotate the engine cover down 4 Slide the tabs engine cover out of the slots in the frame 5 Install the rear engine cover by following the previous steps in reverse order Figure 2 8 Cho...

Page 14: ... from the carbure tor it must be discarded and replaced with new fuel line 2 Remove the rear engine cover by following the pro cedures described in the rear engine cover section of this chapter 3 Disconnect the fuel line from the fuel tank 4 Remove the two screws indicated by the arrows in Figure 2 11 that hold the starter switch box to the upper housing using a 3 8 wrench See Figure 2 11 NOTE If ...

Page 15: ...iversal joint to the chute rotation rod using a 2 phillips screw driver and a 5 16 wrench 8 Squeeze the trigger while pulling out on the joystick until there is enough room to separate the universal joint from the control rod 9 Remove the hair pin clip indicated by the arrow in Figure 2 14 that secures the control rod to the pin ion gear 10 Remove the control rod and the washer Figure 2 12 Primer ...

Page 16: ...er to the handle bar 14 Tip the snow thrower back onto its handlebar 15 Remove the two screws indicated by the arrows in Figure 2 17 that attach the top engine cover to the auger housing using a 3 8 wrench 16 Lift the top cover off of the snow thrower NOTE Swing it to the side if the primer hose and switches are still connected 17 Install the top cover by following the previous steps in reverse or...

Page 17: ...nnect the fuel line from the fuel tank nipple indicated by the arrow in Figure 2 18 4 Remove the fuel cap 5 Remove the screw indicated by the arrows in Figure 2 19 that secures the fuel tank bracket to the engine cover using a 3 8 wrench NOTE The tank bracket will swing down 6 Remove the fuel tank 7 Install the fuel tank by following the previous steps in reverse order 8 Test run the snow thrower ...

Page 18: ...y following the procedures described in the top engine cover section of this chapter 4 Remove the belt by following the procedures described in Chapter 3 Auger Belt and Pulleys 5 Remove the shoulder bolt that the cable idler bracket pivots on using a 3 4 wrench See Figure 2 20 6 Remove the upper handle bar mounting screw using a 1 2 wrench 7 Remove the nut and bolt indicated by the arrow in Figure...

Page 19: ...wo engine mounting screws indicated by the arrows in Figure 2 23 from the under side of the snow thrower using a 1 2 wrench 10 Lift the engine out of the snow thrower 11 Install the engine by following the previous steps in reverse order 12 Test run the snow thrower in a safe area before returning it to service Figure 2 22 Figure 2 23 ...

Page 20: ...ore prolonged storage Fog or lube cylinder Before prolonged storage Rotate engine to TDC Before prolonged storage Useful Engine Specifications Description Specification Governed engine RPM 3500 100 rpm Spark plug gap 0 024 0 032 0 6 0 8 mm Spark plug torque 15 18 ft lbs 20 25 Nm Ignition module air gap 0 012 0 020 0 3 0 5 mm Intake valve lash 0 003 0 005 0 08 0 12 mm Exhaust valve lash 0 005 0 007...

Page 21: ...threads through the belt cover into the engine block 2 Remove the auger pulley by following the procedures described in the auger pulley section of this chapter 3 Slip the belt off of the engine and idler pulleys 4 Install the belt by following the previous steps in reverse order NOTE When installing the belt cover squeeze the drive bail This will pull the idler pulley into the belt giv ing the co...

Page 22: ...rt number as the pulley nut on rider transmission pulleys 4 Slide the pulley with the belt off of the auger NOTE The recess that the pulley sets in acts as a belt keeper 5 Inspect the hub and splines of the auger shaft for signs of damage See Figure 3 4 NOTE If the hub and or the splines are damaged inspect the auger for signs of impact dam age 6 Install the pulley by following the previous steps ...

Page 23: ... into the pulley half See Figure 3 6 4 Slide the inner pulley half off of the crankshaft 5 Inspect the keys and the keyway NOTE If a key is damaged replace that pulley half If the keyway is damaged the engine must be short blocked NOTE The inboard pulley half and the outboard pulley half have the same part number 6 Install the pulley by following the previous steps in reverse order NOTE Tighten th...

Page 24: ...e bolt 4 Remove the nut and bolt indicated by the arrows in Figure 3 9 that hold the pulley to the idler arm using a pair of 7 16 wrenches 5 Install the idler pulley by following the previous steps in reverse order To remove replace the idler arm 1 Remove the belt cover by following the procedures described in the belt section of this chapter 2 Remove the top engine cover by following the pro cedu...

Page 25: ...See Figure 3 11 NOTE The nut is accessed through the inside of the blower housing 5 Disconnect the linkage indicated by the arrow in Fig ure 3 12 that connects the idler arm to the cable idler bracket 6 Install the idler arm by following the previous steps in reverse order 7 Test run the snow thrower in a safe area before returning it to service Figure 3 11 Nut Shoulder spacer Figure 3 12 ...

Page 26: ...e Figure 3 13 3 Slide the spiral out of the auger assembly 4 Slide a new spiral into the auger assembly 5 Install the screws NOTE Tighten the screws until they start to com press the rubber NOTE Over torquing the screws can cause the bolt head to pull through the rubber 6 Repeat the previous step on the other spiral 7 Test run the snow thrower in a safe area before returning it to service Figure 3...

Page 27: ... that hold the right side panel to the auger housing using a 3 8 wrench 5 Slide the right side panel and auger bearing off of the auger shaft NOTE It is not necessary to remove the bearings to remove the auger 6 Slide the auger out of the left auger bearing NOTE There are two spacers indicated by the arrows in Figure 3 16 on the auger shaft The short one goes on the pulley side 7 Install the auger...

Page 28: ...e bearing out of the auger housing See Figure 3 18 NOTE There is a metal ring on the bearing that pre vents the bearing from sliding through the opening of the side panel It is part of the bearing do not try to remove it 4 Remove the belt by following the procedures described in the Belt section of this chapter 5 Remove the auger pulley hub See Figure 3 19 6 Remove the two screws indicated by the ...

Page 29: ...Fig ure 3 20 out of the auger housing 8 Install the auger bearing by following the previous steps in reverse order NOTE Tighten the bearing retainer screws to a torque of 70 100 in lbs 8 11 Nm 9 Test run the snow thrower in a safe area before returning it to service Figure 3 20 ...

Page 30: ...ure 3 22 NOTE The engine pulley was removed in the pic ture for a better view of the cable It is not necessary to remove the pulley 4 Fish the cable out of the snow thrower 5 Install the cable by following the previous steps in reverse order NOTE The cable should be routed between the top engine cover and the handle bar when it exits the engine covers See Figure 3 23 NOTE The cable should be route...

Page 31: ... shave plate by following the previous steps in reverse order 5 Test run the snow thrower in a safe area before returning it to service Upper discharge chute manual To remove replace the upper discharge chute 1 Remove the wing nut and carriage bolt that holds the left side of the upper chute to the lower chute 2 Remove the nut and the carriage bolt that holds the right side of the upper chute to t...

Page 32: ...that holds the right side of the upper chute to the lower chute using a 1 2 wrench 3 Remove the screw indicated by the arrow in Figure 4 4 that anchors the cable guide to the lower dis charge chute using a 3 8 wrench 4 Slide the upper discharge chute off of the snow thrower 5 Slide the cable guide out from in between the cable bracket and the discharge chute See Figure 4 5 6 Disconnect the cables ...

Page 33: ... in between the cable bracket and the chute 4 Attach the cables to the cable guide See Figure 4 8 5 Slide the upper discharge chute onto the lower chute NOTE Do not apply grease to the inside surface of the upper chute or the outside surface of the lower chute 6 Install the carriage bolts and nuts that hold the upper chute to the lower chute NOTE Thread the nuts on to the carriage bolts until a co...

Page 34: ... chute by following the procedures described in the section of this chapter that applies to the type of chute the snow thrower is equipped with 4 Install the lower chute by following the previous steps in reverse order NOTE On 2010 model year units equipped with remote rotation make sure the spacer ring indicated by the arrow in Figure 4 10 is installed between the ring gear and the lower chute NO...

Page 35: ...er in between the ring gear retaining bracket and the governor shield See Figure 4 12 NOTE Starting with the 2011 the 221 series will no longer be built with this nut bolt and washer 5 Lift the ring gear retaining bracket off of the snow thrower NOTE There is a detent spring under the ring gear If the ring gear is lifted straight up the spring should stay in place See Figure 4 12 Inset To install ...

Page 36: ... following the procedures described in Chapter 2 Engines 2 Remove the pinion gear mounting bracket and the pinion gear using a 3 8 wrench See Figure 4 14 3 Remove the bolt that passes through the ring gear retaining bracket the governor shield and the engine block using a pair of 7 16 wrenches NOTE There is a thick washer in between the ring gear retaining bracket and the governor shield See Figur...

Page 37: ...gear with white lithium grease 2 Insert a 1 4 pin punch or dowel rod through the alignment hole in the double idler gear See Figure 4 17 3 Install the double idler gear so that the pin punch is inserted into the alignment hole of the blower hous ing NOTE Leave the pin punch in place NOTE The flat washer goes against the double idler gear then the wave washer See Figure 4 17 4 Apply white lithium g...

Page 38: ...g in the pocket formed by the two ribs supporting the screw post See Figure 4 20 Inset 9 Install the front two ring gear retaining bracket screws and tighten them to a torque of 15 25 in lbs 1 7 2 8 Nm See Figure 4 20 NOTE Leave the pin punch in place 10 If equipped install the thick washer between the ring gear retaining bracket and the governor shield See Figure 4 21 11 Install the nut and bolt ...

Page 39: ...r gear into the hole in the blower housing See Figure 4 23 16 Install the two screws that secure the brackets to the blower housing and tighten them to a torque of 15 25 in lbs 1 7 2 8 Nm 17 Remove both pin punches 18 Install the spacer ring if equipped See Figure 4 24 19 Install the control rod 20 Install the engine covers and the upper discharge chute by following the procedures described in Cha...

Page 40: ...indicator bracket assembly 6 Install the joy stick by following the previous steps in reverse order Testing the joy stick 1 Remove the joy stick by following the steps described in the previous section of this chapter 2 Check the function of the trigger and the actuating pin Trigger released 1 530 min between the bot tom of the joy stick tube and the end of the actuator pin Trigger fully squeezed ...

Page 41: ...o the pockets of the knob where the trigger rotates 8 Apply a small amount of white lithium grease to the blade of the trigger that engages the actuator pin 9 Install the spring on the actuator pin 10 Lightly coat the upper half of the actuator pin with white lithium grease 11 Insert the actuator pin into the joy stick tube so that the groove in it lines up with the slot in the joy stick tube 12 I...

Page 42: ...ate 2 Separate the housing halves 3 Remove the spacer 4 Lift the control lever out of the housing 5 Disconnect the control cables from the control lever NOTE Note or mark where each cable was attached to the lever If the cables are reversed when re assembled the controls will not work properly 6 Disconnect the control cables from the upper dis charge chute by following the procedures described in ...

Page 43: ...stall the control lever into one of the housing halves NOTE The carriage bolt can be inserted through the hole in the housing to align the spacer and the control lever 11 Set the cable jacket ends into their pockets in the housing half 12 Install the second housing half ensuring that the cable jacket ends are properly seated See Figure 4 32 13 Install the control housing onto the handle bar 14 Tes...

Page 44: ... See Figure 4 33 3 Remove the two screws indicated by the arrows in Figure 4 33 that secure the bearing retainer to the side panel using a 3 8 wrench 4 Gently pry the bearing out of the auger housing NOTE There is a metal ring on the bearing that pre vents the bearing from sliding through the opening of the side panel It is part of the bearing do not try to remove it Figure 4 33 Hub Figure 4 34 Me...

Page 45: ...he right auger bearing to the auger shaft See Figure 4 36 2 Remove the two screws that secure the bearing retainer to the side panel using a 3 8 wrench 3 Remove the five screws indicated by the arrows that hold the right side panel to the auger housing using a 3 8 wrench See Figure 4 36 4 Gently pry the bearing out of the auger housing See Figure 4 37 NOTE There is a metal ring on the bearing that...

Page 46: ... following the procedures described in Chapter 3 Auger Belts and Pulleys 4 Remove the left side panel by following the proce dures described in the left side panel section of this chapter 5 Remove the screw indicated by the arrow that attaches the right side of the auger housing to the frame using a 3 8 wrench See Figure 4 38 6 Remove the screw that attaches the center of the auger housing to the ...

Page 47: ...aches the left side of the auger housing to the frame using a 3 8 wrench See Figure 4 40 8 Remove the auger housing 9 Install the auger housing by following the previous steps in reverse order 10 Test run the snow thrower in a safe area before return ing it to service Figure 4 40 ...

Page 48: ...221 HP LHP 44 ...

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Page 50: ...MTD Products Inc Product Training and Education Department FORM NUMBER 769 06633 04 2011 ...

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