background image

 15

20.15.Remove the hair pin and washer from the ferrule 

attaching the shift rod to the shift lever assembly. 
See Figure 45.

NOTE: 

To maintain adjustment, wrap a piece of 

tape around the ferrule and shift rod to hold it in 
position.

20.16.Using a 1/2 inch socket, remove the two self tap-

ping screws securing the transmission to the 
torque bracket. See Figure 46.

NOTE: 

There are four mounting holes machined 

into the transmission for mounting the transmis-
sion to the torque bracket. The LOWER holes 
are used when installing the transmission into a 
tractor that has a 38” or 42” cutting deck. The 
UPPER holes are used when installing the trans-
mission into a tractor with a 46” cutting deck. 

Figure 45

Hair Pin and Washer

Shift Rod Ferrule

Shift Rod

Shift Lever Assembly

Figure 46

Self Tapping Screws

20.17.Using a 1/2 inch socket and 1/2 inch box 

wrench, remove the four (two on each side) hex 

cap screws and flange lock nuts securing the 

transmission to the frame. See Figure 47.

NOTE: 

There are two (one on each side) trans-

mission mounting brackets providing additional 

support for the frame and transaxle.

NOTE: 

You will find two additional spacers (one 

on each side) used on tractors with a 46” cutting 

deck. Make sure to install these spacers during 

reassembly in order to provided enough clear-

ance for the cutting deck.

20.18.Remove the transmission from the tractor. See 

Figure 48.

NOTE: 

When removing the final two bolts (one 

from each side) use an assistant or support the 

transmission from below to ease removal from 

the tractor. 

Figure 47

Hex Cap Screws and Flange Lock Nuts

(two on each side of frame)

Mounting Bracket

Figure 48

Summary of Contents for 683 Series

Page 1: ...d follow all instructions and use common sense when working on power equipment This includes the contents of the product s Operators Manual supplied with the equipment No liability can be accepted for...

Page 2: ......

Page 3: ...ese models use three different styles Standard Adjustment Quick Adjustment and Knob Adjust ment Refer to the owners manual for proper adjustment 2 BATTERY HOLD DOWN The battery is held in place by a f...

Page 4: ...er in either FORWARD or REVERSE and follow normal operating proce dures 5 DECK LEVELING ADJUSTMENT NOTE The cutting deck is attached to the frame with steel rod hanger links The left front rod is thre...

Page 5: ...HT ON MODELS SO EQUIPPED 6 1 Select the height position of the cutting deck by placing the Deck Engagement Lift Lever in any of the five different cutting height notches on the right side of the frame...

Page 6: ...el 7 9 Start the unit and test the deck engagement lift lever to be certain that the blades fully disen gage when in the BLADES STOP position 7 10 Repeat the adjustment if needed 8 PARKING BRAKE ADJUS...

Page 7: ...rule Figure 12 Speed Control Rod Speed Control Rod Ferrule Cotter Pin 9 4 Adjust the speed control by threading the ferrule inward so that no more than 3 4 of the rod is exposed beyond the ferrule See...

Page 8: ...1 2 Use a 1 2 inch open end wrench to hold the ball joint while using a 9 16 inch open end wrench to loosen the steering arm jam nut securing the ball joint to the steering arm 11 3 Remove the ball jo...

Page 9: ...d with bend for 46 deck 12 6 Remove the two hairpin clips securing the front hanger rods to the deck brackets and carefully lower the front of the deck to the ground See Figure 20 12 7 Remove the two...

Page 10: ...r bracket removal section 15 2 The upper deck belt is removed by simply lifting it off the double pulley located at the rear of the cutting deck 16 LOWER DECK BELT REMOVAL 46 DECKS 16 1 Remove the upp...

Page 11: ...drive belts be changed at the same time 18 1 Place the deck engagement lift lever in the fully forward position 18 2 Set the parking brake on the unit Figure 24 Self Tapping Hex Screws 18 3 Unthread...

Page 12: ...e proper reassembly 18 9 Using an air impact gun with a 5 8 inch socket remove the hex screw that secures the engine pulley to the engine crankshaft 18 10 Carefully lower the pulley off the crankshaft...

Page 13: ...the cut ting deck The transmission pulley is manufac tured with a dish or concave shape The dish side should be facing DOWN on tractors with a Figure 31 Transmission Pulley Figure 32 Flange Nut Washer...

Page 14: ...fol lowing the procedures in the drive belt removal section 19 3 Using an impact wrench and a 1 2 inch socket remove the hex cap screw securing the variable speed pulley assembly to the variable speed...

Page 15: ...Lubrication Points Speed Brackets Figure 39 Negative Cable Positive Cable Battery Hold Down Rod 20 3 Detach the battery hold down rod and remove both the battery and battery tray from the tractor See...

Page 16: ...e transmission and tractor frame to provide increased clearance for the cutting deck The transmission pulley is manufactured with a dish or concave shape The dish side should be facing DOWN on trac to...

Page 17: ...sher Shift Rod Ferrule Shift Rod Shift Lever Assembly Figure 46 Self Tapping Screws 20 17 Using a 1 2 inch socket and 1 2 inch box wrench remove the four two on each side hex cap screws and flange loc...

Page 18: ...16...

Reviews: