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NOTE: These materials are for use by trained technicians 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 inexperienced individuals should
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
seek the assistance of an experienced and trained professional. Read, understand, and follow all instructions and use common
This Service Manual is not a substitute for the Operator's Manual. You must read, understand
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 any inaccuracies or omission in this publication, although care has been taken to
and follow all of the directions in this manual as well as the Operator's Manual before working
make it as complete and accurate as possible at the time of publication. However, due to the variety of outdoor power equipment
on this 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
TROY-BILT LLC, P.O. BOX 361131, CLEVELAND, OH 44136-0019
may not depict actual model and component parts. © Copyright 2005 MTD Products Inc. All Rights Reserved
MTD Products LLC - Product Training and Education Department
PRINTED IN USA
Service Manual
Bolens 683 Series Box Frame Tractor
FORM NO.769-00946
(10/2003)
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Summary of Contents for Bolens Bolens
- Page 1 Instructions, photographs and illustrations used in this publication are for reference use only and TROY-BILT LLC, P.O. BOX 361131, CLEVELAND, OH 44136-0019 may not depict actual model and component parts. © Copyright 2005 MTD Products Inc. All Rights Reserved MTD Products LLC - Product Training and Education Department PRINTED IN USA FORM NO.769-00946...
- Page 3 Heavy-Duty Box Frame • Positive Caster Wheel Design • Tires: 15" x 6" Front and 20´x 8" Rear Tires Other models Bolens models based on this frame style: • Model 13AN683G163 - 17 hp • Model 13AO683G163 - 18 hp •...
- Page 4 control in the low speed position, proceed as follows. DECK LEVELING ADJUSTMENT 4.1. Place the shift lever in NEUTRAL NOTE: The cutting deck is attached to the frame with steel rod hanger links. The left front rod is 4.2. Restart the engine. threaded and has a ferrule which is used for 4.3.
- Page 5 If you are experiencing belt right side of the frame. damage contact MTD Customer Service for a 6.2. Adjust the deck wheels so that they are between hanger link with a bend in it. See Figure 6.
- Page 6 7.2. Unthread the shift knob and remove the two 7.7. Check the adjustment by placing the deck lift flange screws securing the shift cover panel in lever in the BLADES STOP position. The deck place. See Figure 9. should move up and forward and the belt should become loose.
- Page 7 If the full range of speeds cannot be reached on the 9.4. Adjust the speed control by threading the ferrule tractor, adjust the speed control as follows. inward so that no more than 3/4” of the rod is exposed beyond the ferrule. See Figure 13. 9.1.
- Page 8 10.2. Measure the distance between the front tire rims CUTTING DECK REMOVAL behind the pivot bar. The measurement taken in 12.1. Place the deck engagement lever in the front of the pivot bar should be between 1/16” engaged position (lowest cutting position). and 5/16”...
- Page 9 This has been corrected on later production by and lower the deck to the ground. See Figure 21. moving the frame mounting bracket higher. If you are experiencing belt damage contact MTD Customer Service for a Hanger Link with a bend in it. See Figure 19.
- Page 10 13.1. Remove the hairpin clip that secures the stabi- LOWER DECK BELT REMOVAL (46” DECKS) lizer rod to the stabilizer bracket. See Figure 22. 16.1. Remove the upper deck belt. See above. 16.2. Using a 1/2 inch socket, remove the belt guards. 16.3.
- Page 11 17.7. Using a 1/2 inch socket remove the four self tap- 18.3. Unthread the shift knob and remove the two ping hex screws securing the spindle assembly flange screws securing the shift cover panel in to the cutting deck. See Figure 24. place.
- Page 12 18.6. Using a spring puller (MTD Part number 732- 18.9. Using an air impact gun with a 5/8 inch socket, 0571), disconnect the two springs which are remove the hex screw that secures the engine attached to the rear portion of the tractor pulley to the engine crankshaft.
- Page 13 18.13. Using an impact gun with a 7/8 inch socket, 38” or 42” cutting deck and facing UP on tractors remove the flange nut securing the transmission with a 46” cutting deck. pulley to the transmission. See Figure 31. NOTE: A pulley hub is located beneath the transmission pulley.
- Page 14 18.17. Install new belts following the previous instruc- NOTE: Use the transmission belt to place ten- tions in the reverse order. sion on the variable speed pulley in order to hold IMPORTANT: When installing the engine pulley, it in place while removing the hex cap screw. torque the hex bolt to between 38 and 50 foot- See Figure 36.
- Page 15 20.5. Remove both rear wheels. See Figure 40. 20.6. Release the parking brake. TRANSMISSION REMOVAL 20.7. Using a spring puller (MTD Part number 732- NOTE: The transmission can be removed with- 0571), disconnect the two springs which are out removing the cutting deck.We have removed attached to the rear portion of the tractor frame.
- Page 16 Note the location of the hook during disassem- and tractor frame to provide increased clearance bly. for the cutting deck. The transmission pulley is manufactured with a dish (or concave) shape. 20.9. Using an impact gun with a 7/8 inch socket, The dish side should be facing DOWN on trac- remove the flange nut securing the transmission tors with a 38”...
- Page 17 20.15. Remove the hair pin and washer from the ferrule 20.17. Using a 1/2 inch socket and 1/2 inch box wrench, remove the four (two on each side) hex attaching the shift rod to the shift lever assembly. cap screws and flange lock nuts securing the See Figure 45.
Need help?
Do you have a question about the Bolens and is the answer not in the manual?
Questions and answers
how do you remove rear wheel removed bolt is there a spring clip
To remove the rear wheel bolt on a Bolens lawn mower:
1. Use a 5/8 inch socket or wrench to remove the bolt.
2. If the wheel is stuck, clean the area and apply a releasing agent to help loosen it.
3. A drift or flat-ended chisel and hammer may be used carefully to tap out the pin that holds the wheel.
4. There is a clip that keeps the pin in place, which must be removed first.
Yes, a spring clip is involved in securing the pin.
This answer is automatically generated
safety seat shut off assembly
The safety seat shut-off assembly for Bolens includes an interlock seat switch. This switch is a normally open (N.O.) type with two terminals and a snap-in mounting type. It is designed to ensure the mower operates only when the operator is seated. The switch is compatible with Bolens models and may replace multiple part numbers.
This answer is automatically generated
Need a schematic of the ignition system including wiring pinout of the key assembly.
Install the lower belt to the rear pulley. Tabs on either side do not allow belt to fir through left side tab.
I have to dial the speed adjuster lever up to #3 before I can get mower to move. then it moves at #3 speed. Need to be able to go down to 2# or 1# to slow down and mow in tight corners. Is there any way to simply adjust the linkage assembly rectify this.
What kind of engine oil I can use for replacement for Bolens by MTD 15.5 38 inch cut?